STABILIZING AGENT FOR REDUCING THE LEACHING TOXICITY OF HEAVY METALS CONTAINED IN FOODS, FOODSTUFFS, CHINESE HERBS AND ENHANCING FOOD SAFETY AND ENVIRONMENTAL PROTECTION AND PREPARATION METHOD THEREOF

Abstract

The present invention relates to a stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection and its preparation method. The stabilizing agent is prepared by mixing the following raw materials: a phosphoric acid or phosphate, an acidity regulator and a chloride. The stabilizing agent of the present invention can be added directly to foods, foodstuffs, Chinese herbs during brewing, cooking or seasoning processes, that is, the stabilizing agent can reduce the leaching solubility of heavy metals contained in the foods, foodstuffs, Chinese herbs before entering the human mouth, stomach and intestines of human beings.

Claims

1. A stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection, wherein raw materials of the stabilizing agent are consisted of a phosphoric acid or phosphate, an acidity regulator, and a chloride.

2. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 1, wherein the phosphate is one or more selected from tricalcium phosphate, calcium dihydrogen phosphate, calcium hydrogen phosphate, sodium pyrophosphate, sodium hexametaphosphate, sodium trimetaphosphate, sodium tripolyphosphate, trisodium phosphate, tripotassium phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, disodium dihydrogen pyrophosphate, ammonium dihydrogen phosphate, diammonium hydrogen phosphate, tetrapotassium pyrophosphate, trisodium hydrogen pyrophosphate, potassium polymetaphosphate, calcium acid pyrophosphate, sodium aluminum acid phosphate, magnesium hydrogen phosphate, calcium glycerophosphate, ferric pyrophosphate, casein phosphopeptide, and phosphate-containing food.

3. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 2, wherein the phosphate-containing food is one or more selected from bone meal, bone bouillon extract powder, and fish meal.

4. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 1, wherein the acidity regulator is one or more selected from tricalcium phosphate, calcium dihydrogen phosphate, sodium pyrophosphate, sodium trimetaphosphate, sodium tripolyphosphate, trisodium phosphate, tripotassium phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, disodium dihydrogen pyrophosphate, magnesium hydrogen phosphate, trimagnesium phosphate, calcium sulfate, calcium hydroxide, potassium hydroxide, magnesium oxide, lactic acid, calcium lactate, sodium lactate, sodium carbonate, potassium carbonate, potassium bicarbonate, sodium bicarbonate, sodium sesquicarbonate, sodium acetate, sodium citrate, sodium dihydrogen citrate, and potassium citrate.

5. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 1, wherein the chloride is one or more selected from sodium chloride, potassium chloride, calcium chloride, and magnesium chloride.

6. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 1, wherein the amounts of the raw materials in percent by mass are as follows: TABLE-US-00017 The phosphoric acid or phosphate 0.5-90%; The acidity regulator 0.5-65%; The chloride 0.5-40%.

7. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 1, wherein the raw materials of the stabilizing agent further comprise one or more selected from food or processed foodstuff containing dietary fiber, colloid, phlegm, or riched in or being able to increase probiotic bacteria, food-grade iron compound, antioxidant, thickener, nutrition enhancer, and preservative.

8. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 7, wherein the food containing dietary fiber, colloid, phlegm, or riched in or being able to increase probiotic bacteria is one or more selected from fruits and vegetables, cereal grains, legumes, bacteria and algae foods; wherein the processed foodstuff containing dietary fiber, colloid, phlegm, or riched in or being able to increase probiotic bacteria is one or more selected from health care product, seasoning agent or thickener made from plants, vegetables, fruits, cereal grains, legumes, bacteria, algae or milk, as well as shell of shrimps, crabs, or insects.

9. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 7, wherein the food-grade iron compound is one or more selected from iron oxide black, iron oxide red, ferrous sulfate, ferrous gluconate, ferric ammonium citrate, ferrous fumarate, ferric citrate, ferrous citrate, ferrous lactate, chlorohemin, ferric pyrophosphate, iron porphyrin, ferrous glycinate, reduced iron, ferric sodium EDTA, carbonyl iron powder, ferrous carbonate, ferrous fumarate, ferrous succinate, heme iron, and electrolytic iron.

10. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 7, wherein the antioxidant is one or more selected from vitamin E, disodium EDTA, calcium disodium EDTA, sulfur dioxide, potassium metabisulfite, sodium metabisulfite, sodium sulfite, sodium hydrogen sulfite, sodium hydrosulfite, ascorbic acid, D-erythorbic acid and its sodium salt, sodium ascorbate, calcium ascorbate, ascorbyl palmitate, phospholipids, propyl gallate, antioxidant of glycyrrhiza, phytic acid, sodium phytate, bamboo leaf antioxidants, rosemary extract, tea polyphenols, tea polyphenols palmitate, lipoic acid, L-methionine, glutathione, cysteine and taurine.

11. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 7, wherein the thickener is one or more selected from propylene glycol, tara gum, starch acetate, sodium carboxymethyl starch, acid-treated starch, sodium starch phosphate, aluminum starch octenylsuccinate, oxidized starch, oxidized hydroxypropyl starch, -cyclodextrin, gum arabic, guar gum, carrageenan, Cassia tora, gelatin, curdlan, pectin, locust bean gum, funoran, ablmoschus manihot gums, xanthan gum, Sa-son seed gum, sesbania gum, linseed gum, gleditsia sinensis lain gum, gellan gum, agar, propylene glycol alginate, chitin, chitosan, alginic acid, sodium alginate, potassium alginate, maltitol, lactitol, sorbitol, pullulan, soluble soybean polysaccharide, tamarind polysaccharide gum, carboxymethyl cellulose, propyl methyl cellulose, carboxymnethyl cellulose sodium, polyglyceryl fatty acid ester, distarch phosphate, phosphated distarch phosphate, acetylated distarch phosphate, and acetylated distarch adipate.

12. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 7, wherein the nutrition enhancer is one or more selected from calcium carbonate, calcium gluconate, calcium citrate, calcium lactate, calcium L-lactate, calcium hydrogen phosphate, calcium L-threonate, calcium glycinate, calcium aspartate, citric acid, calcium malate, calcium acetate, calcium chloride, tricalcium phosphate, vitamin E, calcium succinate, calcium glycerophosphate, calcium oxide, calcium sulfate, bone meal, sodium selenite, sodium selenate, selenium protein, selenium-rich edible fungus powder, L-selenium-methylselenocysteine, selenium carrageenan, selenium-rich yeast, casein phosphopeptide, casein calcium peptides, taurine, L-methionine, L-lysine, L-carnitine, vitamin B1, B2, B6, B12, and folic acid.

13. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 7, wherein the preservative is one or more selected from potassium cinnamate, cinnamaldehyde, -polylysine hydrochloride, -polylysine, nisin, sodium diacetate, sorbic acid and its potassium salt.

14. The stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection according to claim 1, wherein the heavy metal is one or more selected from lead, cadmium, copper, arsenic and mercury.

15. A method for preparing a stabilizing agent for reducing the leaching toxicity of heavy metals contained in foods, foodstuffs, Chinese herbs and enhancing food safety and environmental protection, comprising: weighting a phosphoric acid or phosphate, an acidity regulator and a chloride accurately in a certain ratio, respectively, feeding all of them into a mixer followed by evenly mixing with stirring in the mixer at normal temperature and pressure before packaging.

Description

DESCRIPTION OF THE EMBODIMENTS

[0064] The present invention is further illustrated with reference to the following specific examples. It should be understood that these examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention. It should also be understood that various changes or modifications may be made by those skilled in the art upon reading the disclosure of the specification, these equivalents also fall within the scope of the present invention as defined by the appended claims.

Example 1

[0065] An instant noodle with low lead (Pb) leaching toxic concentration was used as the sample of this example, and one liter (1,000 ml) of boiled pure water was prepared.

[0066] (1) An appropriate amount (such as 500 ml, i.e., 500 g) of boiled pure water mentioned above was used to brew one pack of the instant noodle with low lead (Pb) leaching toxic concentration in an empty and clean glass bottle, followed by adding seasonings attached, and stirring evenly. Then, one half of the noodle (at least 50 g) and one half of the soup were taken as sample and placed into another empty and clean glass bottle, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the noodle and soup sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the lead (Pb) leaching toxic concentration of the leachate of sample without addition of heavy metal detoxification stabilizing agent.

[0067] (2) After one half of soup and noodle were removed from the instant noodle added with boiled pure water and seasonings for the test as described above in (1), a small amount of 0.3 g (300 mg) of a heavy metal stabilizing agent prepared (composition in mass percentage: dietary fiber foods (konjac flour) 40%, phosphates (disodium dihydrogen pyrophosphate+calcium hydrogen phosphate) 48%, acidity regulator (potassium hydroxide) 8%, sodium chloride 4%) was added and stirred evenly, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conducted on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the noodle and soup sample containing the heavy metal stabilizing agent were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the lead (Pb) leaching toxic concentration of the leachate of sample with addition of 0.3 g of the heavy metal detoxification stabilizing agent.

[0068] After testing, heavy metal lead (Pb) leaching toxic concentrations of the instant noodle samples before stabilization treatment, i.e., (1) and after stabilization treatment, i.e., (2) were listed as follows:

TABLE-US-00005 Example 1(2) Example 1(1) heavy metal leaching heavy metal leaching toxic concentrations toxic concentration with addition of 0.3 without addition of g of the heavy metal heavy metal stabilizing stabilizing agent Test Item agent (g/kg) (g/kg) lead (Pb) 4.0 1.0

[0069] The test results showed that the lead (Pb) leaching toxic concentration of the instant noodle sample before stabilization treatment was 4 g/kg (i.e., 4 g/Kg or 0.004 mg/kg), after stabilization treatment, i.e., addition of 0.3 g of the heavy metal stabilizing agent as described in above Example 1(2), the lead (Pb) leaching toxic concentrations of the instant noodle sample was 1 g/kg (i.e., or 0.001 mg/kg), that is, the leaching toxic concentration or leaching toxicity of heavy metal lead (Pb) was reduced by 75%.

Example 2

[0070] Two packs of instant noodles with high lead (Pb) leaching toxic concentration with the same brand that purchased at the same time were used as the sample of this example, and one liter (1,000 ml) of boiled pure water was prepared.

[0071] (1) 500 ml, i.e., 500 g, of boiled water mentioned above was used to brew one of the two packs of instant noodle with high lead (Pb) leaching toxic concentration in an empty and clean glass bottle, followed by adding seasonings attached, and stirring evenly. Then, one half of the noodle (at least 50 g) and one half of the soup were taken as sample and placed them into another empty and clean glass bottle, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the noodle and soup sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the lead (Pb) leaching toxic concentration of the leachate of sample without addition of heavy metal detoxification stabilizing agent.

[0072] (2) After one half of soup and noodle were removed from the instant noodle added with boiled pure water and seasonings for the test as described above in (1), 1.0 g (1,000 mg) of a heavy metal stabilizing agent prepared (composition in mass percentage: dietary fiber foods (mushroom power) 60%, phosphate ((disodium hydrogen phosphate+sodium dihydrogen phosphate) 8%, acidity regulator (sodium carbonate) 20%, nutrition enhancer (calcium carbonate) 8%, sodium chloride 4%) was added to the remaining half of brewed noodle and soup in the same bottle, and stirred evenly, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conducted on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the noodle and soup sample containing the heavy metal stabilizing agent were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the lead (Pb) leaching toxic concentration of the leachate of sample with addition of 1.0 g of the heavy metal detoxification stabilizing agent.

[0073] (3) The other pack of instant noodle with high lead (Pb) level was placed into an empty and clean glass bottle followed by adding 500 ml, i.e., 500 g, of boiled pure water and seasonings attached, and stirring evenly. Afterwards, one half of the noodle (at least 50 g) and one half of the soup were taken as sample and placed them into another empty and clean glass bottle, followed by adding 1.0 g (1,000 mg) of a heavy metal stabilizing agent prepared (composition in mass percentage: dietary fiber foods (mushroom power) 44%, phosphate ((disodium hydrogen phosphate+sodium dihydrogen phosphate) 8%, acidity regulator (sodium carbonate) 20%, nutrition enhancer (calcium carbonate) 8%, chloride 20%), and stirred evenly, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conducted on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the noodle and soup sample containing the heavy metal stabilizing agent were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the lead (Pb) leaching toxic concentration of leachate of sample with addition of 1.0 g of the heavy metal detoxification stabilizing agent.

[0074] After testing, the heavy metal lead (Pb) leaching toxic concentrations of the instant noodle samples with high lead (Pb) level before stabilization treatment, i.e., (1) and after stabilization treatment, i.e., (2) and (3) were listed as follows:

TABLE-US-00006 Example 2(2) Example 2(3) Example 2(1) heavy metal leaching heavy metal leaching heavy metal leaching toxic concentration toxic concentration toxic concentration with addition of 1.0 with addition of 1.0 without addition of g of the heavy metal g of the heavy metal heavy metal stabilizing stabilizing agent in stabilizing agent in Test Item agent (mg/kg) (2)(mg/kg) (3)(mg/kg) lead (Pb) 0.031 0.019 0.005

[0075] The test results showed that the lead (Pb) leaching toxic concentration of the instant noodle sample before stabilization treatment described in (1) was 0.031 mg/kg (i.e., 31 g/Kg), after stabilization treatment on the same pack described in (2), i.e., addition of 1.0 g of the heavy metal stabilizing agent as described in above Example 2(2), the lead (Pb) leaching toxic concentration was 0.019 mg/kg (i.e., 19 g/Kg), that is, the leaching toxicity of heavy metal lead (Pb) was reduced by approximately 38%. In (3), after 1.0 g of the heavy metal stabilizing agent in Example 2(3) was added, the lead (Pb) leaching toxic concentration became 0.005 mg/kg (i.e., 5 g/Kg), that is, the leaching toxicity of heavy metal lead (Pb) was reduced by about 84%, as compared to 31 g/Kg, the lead (Pb) leaching toxic concentration before stabilization treatment of the instant noodle with the same brand and purchased at the same time and used in the test (1). Example 2 also showed that the more sodium chloride used in the heavy metal stabilizing agent, the more in decrease of heavy metal lead (Pb) leaching toxic concentration.

Example 3

[0076] One packet of instant noodles containing high lead (Pb) leaching toxic concentration with the same brand and purchased at the same time as those used for Example 2 was used as the sample of this example, and one liter (1,000 ml) of boiled pure water was prepared.

[0077] (1) 500 ml, i.e., 500 g, of boiled water mentioned above was used to brew one packet of instant noodle with high lead (Pb) level with the same brand and purchased at the same time as those used for Example 2 in an empty and clean glass bottle followed by adding seasonings attached, and stirring evenly. Afterwards, one half of the noodle (at least 50 g) and one half of the soup were taken as sample and placed into another empty and clean glass bottle, into which 0.5 g (500 mg) of a heavy metal stabilizing agent that was identical to that used in Examples 1(2)(composition in mass percentage: dietary fiber foods (konjac flour) 40%, phosphate (disodium dihydrogen pyrophosphate+calcium hydrogen phosphate) 48%, acidity regulator (potassium hydroxide) 8%, sodium chloride 4%) was added and stirred evenly, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conducted on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the noodle and soup sample containing the heavy metal stabilizing agent were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the lead (Pb) leaching toxic concentration of the leachate of sample with addition of 0.5 g of the heavy metal detoxification stabilizing agent.

[0078] (2) After one half of soup and noodle were removed from the instant noodle with low lead (Pb) leaching toxic concentration added with boiled pure water and seasonings for the test as described above in (1), 1.0 g (1000 mg) of a heavy metal stabilizing agent that was identical to that used in Example 1(2) and Example 3(1) (composition in mass percentage: dietary fiber foods (konjac flour) 40%, phosphate (disodium dihydrogen pyrophosphate+calcium hydrogen phosphate) 48%, acidity regulator (potassium hydroxide) 8%, sodium chloride 4%) was added to the remaining half of brewed noodle soup in the same bottle and stirred evenly, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conducted on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the noodle and soup sample containing the heavy metal stabilizing agent were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the lead (Pb) leaching toxic concentration of the leachate of sample with addition of 1.0 g of the heavy metal detoxification stabilizing agent.

[0079] After testing, the heavy metal lead (Pb) leaching toxic concentrations of the instant noodle samples before stabilization treatment, i.e., Example 3(1) and after stabilization treatment, i.e., Example 3 (2) were listed as follows:

TABLE-US-00007 Example 3(1) Example 3(2) heavy metal leaching heavy metal leaching Example 2(1) toxic concentration toxic concentration heavy metal leaching with addition of 0.5 with addition of 1.0 toxic concentration g of the heavy metal g of the heavy metal without addition of stabilizing agent as stabilizing agent as heavy metal stabilizing described in the described in the Test Item agent (g/kg) (1) (g/kg) (2) (g/kg) lead (Pb) 31 1.0 <1.0

[0080] The test results showed that as compared to 31 g/Kg, the lead (Pb) leaching toxic concentration before stabilization treatment of the instant noodle with the same brand and purchased at the same time as those used in Example 2, the lead (Pb) leaching toxic concentration of the instant noodle sample after stabilization treatment, i.e., addition of 0.5 g of the heavy metal stabilizing agent as described in above Example 3(1), was 1 g/kg, the leaching toxicity of heavy metal lead (Pb) was reduced by about 96%. In Example 3(2), after 1.0 g of the same heavy metal stabilizing agent was added, the lead (Pb) leaching toxic concentration of the instant noodle sample became <1 g/kg*, the leaching toxicity of heavy metal lead (Pb) was reduced by more than 96%. *the detection limit of lead (Pb) of graphite furnace atomic absorption spectrometry is 1 g/kg (i.e., the concentration lower than 1 g/kg cannot be accurately determined). Example 3 also showed that the more heavy metal stabilizing agent, the more in decrease of heavy metal leaching toxic concentration. As showed by comparison between Example 3 and Example 2(2), the more phosphates added, the more in decrease of heavy metal leaching toxic concentration.

Example 4

[0081] Two packs of instant noodle with high arsenic (As) leaching toxic concentration with the same brand that purchased at the same time were used as the sample of this example, and one liter (1,000 ml) of boiled pure water was prepared.

[0082] (1) 500 ml, i.e., 500 g, of boiled water mentioned above was used to brew one of the two packs of instant noodle with high arsenic (As) leaching toxic concentration in an empty and clean glass bottle, followed by adding seasonings attached, and stirring evenly. Then, one half of the noodle (at least 50 g) and one half of the soup were taken as sample and placed into another empty and clean glass bottle, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the noodle and soup sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a hydride generator atomic absorption spectrometry was used to determine the arsenic (As) leaching toxic concentration of the leachate of sample without addition of heavy metal detoxification stabilizing agent.

[0083] (2) After one half of soup and noodle were removed from the instant noodle and seasonings added with boiled pure water for the test as described above in (1), 1.0 g of a heavy metal stabilizing agent prepared (composition in mass percentage: dietary fiber foods (pepper powder) 67%, phosphate ((calcium hydrogen phosphate+tricalcium phosphate) 20%, acidity regulator (sodium bicarbonate) 4%, nutrition enhancer (calcium carbonate) 5%, sodium chloride 4%) was added to the remaining half of brewed noodle and soup in the same bottle, and stirred evenly, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conducted on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the noodle and soup sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007method remained unchanged. After filtration, a hydride generator atomic absorption spectrometry was used to determine the arsenic (As) leaching toxic concentration of the leachate of sample with addition of 1.0 g of the heavy metal detoxification stabilizing agent.

[0084] (3) The other pack of instant noodle with high arsenic (As) level was placed into an empty and clean glass bottle followed by adding 500 ml, i.e., 500 g, of boiled pure water and seasonings attached and stirring evenly. Afterwards, one half of the noodle (at least 50 g) and one half of the soup were taken as sample and placed them into another empty and clean glass bottle, followed by adding 1.0 g (1,000 mg) of a heavy metal stabilizing agent prepared (composition in mass percentage: dietary fiber foods (pepper powder) 43%, phosphate ((calcium hydrogen phosphate+tricalcium phosphate) 20%, acidity regulator (sodium bicarbonate) 16%, nutrition enhancer (calcium carbonate) 5%, sodium chloride 16%), and stirred evenly, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conducted on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the noodle and soup sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a hydride generator atomic absorption spectrometry was used to determine the arsenic (As) leaching toxic concentration of the leachate of sample with addition of 1.0 g of the heavy metal detoxification stabilizing agent.

[0085] After testing, the heavy metal arsenic (As) leaching toxic concentrations of the instant noodle samples with high arsenic (As) level before stabilization treatment, i.e., (1) and after stabilization treatment, i.e., (2) and (3) were listed as follows:

TABLE-US-00008 Example 4(2) Example 4(3) heavy metal leaching heavy metal leaching Example 4(1) toxic concentration toxic concentration heavy metal leaching with addition of 1.0 with addition of 1.0 toxic concentration g of the heavy metal g of the heavy metal without addition of stabilizing agent as stabilizing agent as heavy metal stabilizing described in described in Test Item agent (mg/kg) (2) (mg/kg) (3) (mg/kg) arsenic (As) 0.142 0.081 0.011

[0086] The test results showed that the arsenic (As) leaching toxic concentration of the instant noodle sample before stabilization treatment was 0.142 mg/kg (i.e., 142 g/Kg), after stabilization treatment, i.e., addition of 1.0 g of the heavy metal stabilizing agent as described in Example 4(2), the arsenic (As) leaching toxic concentrations was 0.081 mg/kg (i.e., 81 g/Kg), that is, the leaching toxic concentration or leaching toxicity of heavy metal arsenic (As) was reduced by 42.96%, about 43%. In Example 4(3), after the noodle and soup was treated with 1.0 g of the heavy metal stabilizing agent, the arsenic (As) leaching toxic concentration became 0.011 mg/kg (i.e., 11 g/Kg), that is, the leaching toxicity of heavy metal arsenic (As) was reduced by about 92% as compared to 0.142 mg/kg, the arsenic (As) leaching toxic concentration before stabilization treatment of the instant noodle with the same brand and purchased at the same time and used in Example 4(1). Example 4 also showed that the more sodium chloride and acidity regulator (sodium bicarbonate) employed in the heavy metal stabilizing agent, the more in reduction of the heavy metal arsenic (As) leaching toxic concentration.

Example 5

[0087] About 500 g rice with arsenic (As) leaching toxic concentration was used as the sample of this example, and all rice was washed with pure water firstly.

[0088] (1) To 175 g of the washed rice contaminated with arsenic (As) as described above was added an appropriate amount of pure water according to a conventional ratio (for example, rice:water ratio of 1:1), then, the mixture was placed into an electric cooker to cook. After the cooking was done, let the rice cool down for more than ten (10+) minutes, then at least 250 g of rice was taken and placed in an empty and clean glass bottle, then the bottle was covered and send to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007(Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the rice sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a hydride generator atomic absorption spectrometry was used to determine the arsenic (As) leaching toxic concentration of the leachate of sample without addition of heavy metal detoxification stabilizing agent.

[0089] (2) To 175 g of the rice contaminated with arsenic (As), which was from the same bag and washed together with that used in the test (1) was add 5.0 g of a heavy metal stabilizing agent (composition in mass percentage: dietary fiber foods (pumpkin powder) 76%, phosphate (disodium hydrogen phosphate+sodium dihydrogen phosphate+calcium hydrogen phosphate+tricalcium phosphate) 13%, acidity regulator (sodium bicarbonate) 4%, sodium chloride 3%, magnesium chloride 2%, and preservative (-polylysine) 2%). Afterwards, the same amount of pure water as used in test (1) was added and stirred evenly, and then the mixture was placed into an electric cooker to cook. After the cooking was done, let the rice cool down for more than ten (10+) minutes, then at least 250 g of rice was taken and placed into an empty and clean glass bottle, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conducted on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the rice sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a hydride generator atomic absorption spectrometry was used to determine the arsenic (As) leaching toxic concentration of the leachate of sample with addition of heavy metal detoxification stabilizing agent.

[0090] After testing, the heavy metal arsenic (As) leaching toxic concentrations of the rice samples before stabilization treatment, i.e., (1) and after stabilization treatment, i.e., (2) were listed as follows:

TABLE-US-00009 Example 5 (2) Example 5 (1) heavy metal leaching heavy metal leaching toxic concentrations toxic concentration with addition of 5.0 without addition of g of the heavy metal heavy metal stabilizing stabilizing agent Test Item agent (mg/kg) (mg/kg) arsenic (As) 0.136 0.007

[0091] The test results showed that the arsenic (As) leaching toxic concentration of the cooked, arsenic contaminated rice before stabilization treatment was 0.136 mg/kg (i.e., 136 g/Kg), after stabilization treatment, i.e., addition of 5.0 g of the heavy metal stabilizing agent as described in above Example 5(2) to 175 g of rice, the arsenic (As) leaching toxic concentration of the cooked rice was 0.007 mg/kg (i.e., 7 g/Kg), that is, the leaching toxic concentration of heavy metal arsenic (As) of the rice contaminated with arsenic was decreased or the leaching toxicity of heavy metal arsenic (As) was reduced by about 95%.

Example 6

[0092] About 500 g rice with cadmium (Cd) leaching toxic was used as the sample of this example, and all rice was washed with pure water firstly.

[0093] (1) To 175 g of the washed rice contaminated with cadmium (Cd) as described above was added 175 g pure water (rice:water ratio of 1:1), then the mixture was placed into an electric cooker to cook. After the cooking was done, let the rice cool down for more than ten (10+) minutes, then at least 250 g of rice was taken and placed in an empty and clean glass bottle, then the bottle was covered and send to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the rice sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the cadmium (Cd) leaching toxic concentration of the leachate of sample without addition of heavy metal detoxification stabilizing agent.

[0094] (2) To 175 g of the rice contaminated with cadmium (Cd), which was from the same bag and washed together with that used in the test (1) was added 5.0 g of a heavy metal stabilizing agent (composition in mass percentage: dietary fiber foods (pumpkin powder) 78%, phosphate (disodium hydrogen phosphate+sodium dihydrogen phosphate+calcium hydrogen phosphate+tricalcium phosphate) 13%, acidity regulator (sodium bicarbonate) 4%, sodium chloride 3%, and magnesium chloride 2%). Afterwards, 175 g pure water (rice:water ratio of 1:1) was added and stirred evenly, then the mixture was placed into an electric cooker to cook. After the cooking was done, let the rice cool down for more than ten (10+) minutes, then at least 250 g of rice was taken and placed in an empty and clean glass bottle, and then the bottle was covered and send to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conducted on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the rice sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the cadmium (Cd) leaching toxic concentration of the leachate of sample with addition of heavy metal detoxification stabilizing agent.

[0095] After testing, the heavy metal cadmium (Cd) leaching toxic concentrations of the rice samples before stabilization treatment, i.e., (1) and after stabilization treatment, i.e., (2) were listed as follows:

TABLE-US-00010 Example 6(2) Example 6(1) heavy metal leaching heavy metal leaching toxic concentrations toxic concentrations with addition of 5.0 without addition of g of the heavy metal heavy metal stabilizing stabilizing agent Test Item agent (g/kg) (g/kg) cadmium (Cd) 5.4 1.0

[0096] The test results showed that the cadmium (Cd) leaching toxic concentration of the cooked rice before stabilization treatment was 5.4 g/Kg, after stabilization treatment, i.e., addition of 5.0 g of the heavy metal stabilizing agent as described in above Example 6(2) to 175 g of rice, the cadmium (Cd) leaching toxic concentration of the cooked rice was 1.0 g/Kg), that is, the leaching toxic concentration of heavy metal cadmium (Cd) of the rice contaminated with cadmium was decreased or the leaching toxicity of heavy metal cadmium (Cd) was reduced by about 81%.

Example 7

[0097] About 500 g brown rice with lead (Pb) leaching toxic was used as the sample of this example, and all rice was washed with pure water firstly.

[0098] (1) To 175 g of the washed brown rice contaminated with lead (Pb) as described above was added 175 g pure water (rice:water ratio of 1:1), then the mixture was placed into an electric cooker to cook. After the cooking was done, let the rice cool down for more than ten (10+) minutes, then at least 250 g of rice was taken and placed into an empty and clean glass bottle, and the bottle was covered and send to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the rice sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the lead (Pb) leaching toxic concentration of the leachate of sample without addition of heavy metal detoxification stabilizing agent.

[0099] (2) To 175 g of the brown rice contaminated with lead (Pb), which was from the same bag and washed together with that used in the test (1) was added 5.0 g of a heavy metal stabilizing agent (composition in mass percentage: phosphate (disodium hydrogen phosphate+sodium dihydrogen phosphate+calcium hydrogen phosphate) 80%, acidity regulator (calcium hydroxide) 10%, sodium chloride 7%, and magnesium chloride 3%). Afterwards, the same amount (175 g) of pure water as used in the test (1) was added and stirred evenly, and then the mixture was placed into an electric cooker to cook. After the cooking was done, let the rice cool down for more than ten (10+) minutes, then at least 250 g of rice was taken and placed into an empty and clean glass bottle, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conducted on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the rice sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the lead (Pb) leaching toxic concentration of the leachate of sample with addition of heavy metal detoxification stabilizing agent.

[0100] After testing, the heavy metal lead (Pb) leaching toxic concentrations of the brown rice samples before stabilization treatment, i.e., (1) and after stabilization treatment, i.e., (2) were listed as follows:

TABLE-US-00011 Example 7(2) Example 7(1) heavy metal leaching heavy metal leaching toxic concentration toxic concentration with addition of 5.0 without addition of g of the heavy metal heavy metal stabilizing stabilizing agent Test Item agent (g/kg) (g/kg) lead (Pb) 10 <1

[0101] The test results showed that the lead (Pb) leaching toxic concentration of the cooked brown rice containing lead before stabilization treatment was 0.010 mg/kg (i.e., 10 g/Kg), after stabilization treatment, i.e., addition of 5.0 g of the heavy metal stabilizing agent as described in above Example 7(2) to 175 g of brown rice, the lead (Pb) leaching toxic concentration of the cooked brown rice was <0.001 mg/kg (i.e., <1 g/Kg*), that is, the lead (Pb) leaching toxic concentration or toxicity of the brown rice contaminated with lead was reduced by 90%. *the detection limit of lead (Pb) of graphite furnace atomic absorption spectrometry is 1 g/kg (i.e., the concentration lower than 1 g/kg cannot be accurately determined).

Example 8

[0102] About 500 g rice containing arsenic (As) and lead (Pb) leaching toxic was used as the sample of this example, and all rice was washed with pure water firstly.

[0103] (1) To 175 g of the washed rice contaminated with arsenic (As) and lead (Pb) as described above was added 175 g pure water (rice:water ratio of 1:1), then the mixture was placed into an electric cooker to cook. After the cooking was done, let the rice cool down for more than ten (10+) minutes, then at least 250 g of rice was taken and placed into an empty and clean glass bottle, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the rice sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a hydride generator atomic absorption spectrometry was used to determine the arsenic (As) leaching toxic concentration and a graphite furnace atomic absorption spectrometry was used to determine the lead (Pb) leaching toxic concentration of the leachate of sample without addition of heavy metal detoxification stabilizing agent.

[0104] (2) To 175 g of the rice contaminated with arsenic (As) and lead (Pb), which was from the same bag and washed together with that used in the test (1), was added 10.0 g of a heavy metal stabilizing agent (composition in mass percentage: dietary fiber foods (Coix Seed powder) 60%, phosphate (calcium hydrogen phosphate+tricalcium phosphate) 18%, acidity regulator (calcium hydroxide) 10%, sodium chloride 10%, thickener (soluble soybean polysaccharide) 1%, antioxidant (ascorbic acid) 1%). Afterwards, the same amount (175 g) of pure water was added and stirred evenly, and then the mixture was placed into an electric cooker to cook. After the cooking is done, let the rice cool down for more than ten (10+) minutes, then at least 250 g of rice was taken and placed into an empty and clean glass bottle, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conducted on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the rice sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a hydride generator atomic absorption spectrometry was used to determine the arsenic (As) leaching toxic concentration and a graphite furnace atomic absorption spectrometry was used to determine the lead (Pb) leaching toxic concentration of the leachate of sample with addition of heavy metal detoxification stabilizing agent.

[0105] After testing, the heavy metal arsenic (As) and lead (Pb) leaching toxic concentrations of the rice samples before stabilization treatment, i.e., (1) and after stabilization treatment, i.e., (2) were listed as follows:

TABLE-US-00012 Example 8(2) Example 8(1) heavy metal leaching heavy metal leaching toxic concentration toxic concentration with addition of 10.0 without addition of g of the heavy metal heavy metal stabilizing stabilizing agent Test Item agent (mg/kg) (mg/kg) lead (Pb) 0.00134 <0.001 arsenic (As) 0.126 <0.001

[0106] The test results showed that the arsenic (As) leaching toxic concentration of the cooked rice contaminated with arsenic (As) and lead (Pb) before stabilization treatment was 0.126 mg/kg (i.e., 126 g/Kg), while the lead (Pb) leaching toxic concentration was 0.00134 mg/kg (i.e., 1.34 g/Kg), after stabilization treatment, i.e., addition of 10.0 g of the heavy metal stabilizing agent as described in above Example 8(2) to 175 g of rice contaminated with arsenic (As) and lead (Pb), the arsenic (As) leaching toxic concentration of the cooked rice was <0.001 mg/kg (i.e., <1 1 g/Kg*), that is, the leaching toxic concentration of heavy metal arsenic (As) of the rice contaminated with arsenic was reduced by >99%; the lead (Pb) leaching toxic concentration of the cooked rice is <0.001 mg/kg (i.e., <1 1 g/Kg*). *Both the detection limit of lead (Pb) and the detection limit of arsenic (As) of graphite furnace atomic absorption spectrometry are 1 g/kg (i.e., the concentration lower than 1 g/kg cannot be accurately determined).

Example 9

[0107] About 600 g oysters containing cadmium and copper (Cd, Cu) leaching toxic was used as the sample of this example, and all oysters were washed with pure water firstly.

[0108] (1) 250 g of the washed oysters were taken as sample and placed into an empty and clean glass bottle, then the bottle was covered and send to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the oyster sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the cadmium and copper (Cd, Cu) leaching toxic concentrations of the leachate of sample without addition of heavy metal stabilizing agent.

[0109] (2) 250 g oysters were taken as sample, which were from the same bag and washed together with those used in test (1), to which was added 5.0 g of a heavy metal stabilizing agent (composition in mass percentage: phosphate (sodium hexametaphosphate) 85%, acidity regulator (calcium hydroxide+sodium bicarbonate) 12%, sodium chloride 3%), and stirred evenly, and then placed into an empty and clean glass bottle, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the oyster sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remain unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the cadmium and copper (Cd, Cu) leaching toxic concentrations of the leachate of sample with addition of 5.0 g of the heavy metal stabilizing agent.

[0110] After testing, the heavy metal cadmium and copper (Cd, Cu) leaching toxic concentrations of the oyster sample before stabilization treatment, i.e., (1) and after stabilization treatment, i.e., (2) were listed as follows:

TABLE-US-00013 Example 9(2) Example 9(1) heavy metal leaching heavy metal leaching toxic concentrations toxic concentrations with addition of 10.0 without addition of g of the heavy metal heavy metal stabilizing stabilizing agent Test Item agent (mg/kg) (mg/kg) cadmium (Cd) 0.226 0.010 copper(Cu) 31.0 20.5

[0111] The test results showed that the cadmium (Cd) leaching toxic concentration of the oyster sample before stabilization treatment was 0.226 mg/kg, after stabilization treatment, i.e., addition of 5.0 g of the heavy metal stabilizing agent as described in above Example 9(2), the cadmium (Cd) leaching toxic concentration of the oyster sample was 0.010 mg/kg, that is, the leaching toxic concentration of heavy metal cadmium (Cd) of the oyster sample was reduced by about 95%. The copper (Cu) leaching toxic concentration of the oyster sample before stabilization treatment was 31.0 mg/kg, while the copper (Cu) leaching toxic concentration of the oyster sample after stabilization treatment was 20.5 mg/kg, that is, the leaching toxic concentrations of copper (Cu) of the 250 g of oyster sample with addition of 10.0 g of the heavy metal stabilizing agent was decreased by about 30% at the same time.

Example 10

[0112] About 600 g of Chinese herb angelica sinensis (Danggui) head with mercury (Hg) leaching toxic was used as the sample of this example, and all angelica sinensis head were washed together with pure water firstly.

[0113] (1) 500 g of the washed angelica sinensis head were taken as sample, sliced first and then placed in a pot, and appropriate amount of pure water was added and boiled, then cooled down for more than ten (10+) minutes, one half of the angelica sinensis head (about 250 g) and one half of the soup were taken as sample, and placed into an empty and clean glass bottle, and then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the angelica sinensis head sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a hydride generator atomic absorption spectrometry was used to determine the mercury (Hg) leaching toxic concentration of the leachate of sample without addition of heavy metal detoxification stabilizing agent.

[0114] (2) After one half of angelica sinensis head and one half of soup was removed for the test in (1), the remaining half of angelica sinensis head and half of soup in the same pot was placed into another empty and clean glass bottle, to which was added 2.0 g of the heavy metal stabilizing agent (composition in mass percentage: phosphate (tricalcium phosphate+calcium hydrogen phosphate) 90%, acidity regulator (sodium carbonate) 7%, sodium chloride 3%) and stirred evenly, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the angelica sinensis head sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remain unchanged. After filtration, a hydride generator atomic absorption spectrometry was used to determine the mercury (Hg) leaching toxic concentration of the leachate of sample with addition of 2.0 g of the heavy metal stabilizing agent.

[0115] After testing, the mercury (Hg) leaching toxic concentrations of the angelica sinensis head samples before stabilization treatment, i.e., (1) and after stabilization treatment, i.e., (2) were listed as follows:

TABLE-US-00014 Example10(2) Example 10 (1) heavy metal leaching heavy metal leaching toxic concentrations toxic concentrations with addition of 2.0 without addition of g of the heavy metal heavy metal stabilizing stabilizing agent Test Item agent (g/kg) (g/kg) Mercury (Hg) 0.8 0.3

[0116] The test results showed that the mercury (Hg) leaching toxic concentration of boiled angelica sinensis head before stabilization treatment was 0.8 g/kg, after stabilization treatment, i.e., addition of 2.0 g of the heavy metal stabilizing agent as described in above Example 10(2) to about 250 g of boiled angelica sinensis head, the mercury (Hg) leaching toxic concentration of the angelica sinensis head sample was 0.3 g/kg), that is, the mercury (Hg) leaching toxicity of the angelica sinensis head sample was decreased by about 62%.

Example 11

[0117] About 800 g Chinese herb angelica sinensis (Danggui) head with cadmium (Cd) leaching toxic was used as the sample of this example, and all angelica sinensis heads were washed together with pure water firstly.

[0118] (1) 600 g of the washed angelica sinensis head was taken as sample, sliced first and then placed in a pot, and appropriate amount of pure water was added and boiled, then cooled down for more than ten (10+) minutes, then of the angelica sinensis head (about 200 g) and of the soup were taken as sample, and placed into an empty and clean glass bottle, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the angelica sinensis head sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, graphite furnace atomic absorption spectrometry was used to determine the cadmium (Cd) leaching toxic concentration of the leachate of sample without addition of heavy metal detoxification stabilizing agent.

[0119] (2) After of angelica sinensis head and of soup was removed for the test in (1), half of the remaining angelica sinensis head and soup, i.e. containing about 200 g boiled angelica sinensis head and half of the remaining soup ( of soup), was taken as sample and placed into another empty and clean glass bottle, to which was added 5.0 g of a heavy metal stabilizing agent (composition in mass percentage: dietary fiber foods (mushroom powder) 20%, phosphate (tricalcium phosphate) 16%, acidity regulator (Sodium bicarbonate+sodium tripolyphosphate+sodium lactate) 60%, sodium chloride 4%) and stirred evenly, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the angelica sinensis head sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the cadmium (Cd) leaching toxic concentration from the leachate of sample with addition of 5.0 g of the heavy metal stabilizing agent.

[0120] (3) After of angelica sinensis head and soup was removed for the tests in (1) and (2), the remaining angelica sinensis head and soup containing about 200 g boiled angelica sinensis head was placed into another empty and clean glass bottle, to which was added 5.0 g of pure mushroom powder that was the same as that used in heavy metal stabilizing agent in (2) and stirred evenly, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the angelica sinensis head sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the cadmium (Cd) leaching toxic concentration of the leachate of sample with addition of only 5.0 g of pure mushroom powder.

[0121] After testing, the cadmium (Cd) leaching toxic concentrations of the angelica sinensis head samples before stabilization treatment, i.e., (1), after stabilization treatment, i.e., (2), and (3) angelica sinensis head samples with addition of only pure mushroom powder were listed as follows:

TABLE-US-00015 Example 11(2) Example 11(1) heavy metal leaching Example 11(3) heavy metal leaching toxic concentration heavy metal leaching toxic concentration with addition of 5.0 toxic concentration without addition of g of the heavy metal with addition of 5.0 heavy metal stabilizing stabilizing agent g of pure mushroom Test Item agent (g/kg) (g/kg) powder (g/kg) cadmium (Cd) 1.3 0.7 1.3

[0122] The test results showed that the cadmium (Cd) leaching toxic concentrations of boiled angelica sinensis head sample before stabilization treatment was 1.3 g/kg, after stabilization treatment, the cadmium (Cd) leaching toxic concentration of the angelica sinensis head sample was 0.7 g/kg), that is, the cadmium (Cd) leaching toxicity of the angelica sinensis head sample with addition of 5.0 g of the heavy metal stabilizing agent as described in above Example 11(2) was reduced by about 46%. However, the cadmium (Cd) leaching toxic concentration of angelica sinensis head with addition of only pure mushroom powder and no phosphate or acidity regulator remained unchanged, still the same as that before stabilization treatment. Example 11 also indicates that the use of dietary fiber foods, such as pure mushroom powder, but without addition of heavy metal stabilizing agent, shows no effect of reducing heavy metal leaching toxic concentration.

Example 12

[0123] About 600 g yam containing lead and copper (Pb, Cu) leaching toxic was used as the sample of this example, and all yams were washed together with pure water firstly.

[0124] (1) 500 g of the washed yam was taken as sample, sliced first and then placed in a pot, and appropriate amount of pure water was added and boiled, then of yam and one half of soup was taken as sample and cooled down for more than ten (10+) minutes, then placed into an empty and clean glass bottle, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the yam sample was vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the lead and copper (Pb, Cu) leaching toxic concentrations of the leachate of sample without addition of heavy metal detoxification stabilizing agent.

[0125] (2) After half of yam and half of soup was removed for the test in (1), the remaining half of yam and soup were placed into another empty and clean glass bottle, to which was added 5.0 g of a heavy metal stabilizing agent (composition in mass percentage: phosphate (Disodium hydrogen phosphate+sodium dihydrogen phosphate+calcium hydrogen phosphate) 60%, acidity regulator (sodium bicarbonate) 35%, sodium chloride 5%) and stirred evenly, then the bottle was covered and sent to a lab for analysis. HJ/T299-2007 solid waste leaching toxicity test was conduct on the sample according to GB5085.3-2007 (Identification standards for hazardous wastes-Identification for extraction toxicity), wherein 1N HCl was used as leaching agent (to simulate gastric acid but its acidic strength is stronger than gastric acid) and the yam sample were vibrated in an extraction bottle for 24 hours (longer extraction time), the rest procedures of the HJ/T299-2007 method remained unchanged. After filtration, a graphite furnace atomic absorption spectrometry was used to determine the lead and copper (Pb, Cu) leaching toxic concentrations of the leachate of sample with addition of 5.0 g of the heavy metal stabilizing agent.

[0126] After testing, the lead and copper (Pb, Cu) leaching toxic concentrations of the yam samples before stabilization treatment, i.e., (1) and after stabilization treatment, i.e., (2) were listed as follows:

TABLE-US-00016 Example 12(1) Example12(2) heavy metal leaching heavy metal leaching toxic concentrations toxic concentrations without addition of with addition of 5.0 heavy metal stabilizing g of the heavy metal Test Item agent (mg/kg) stabilizing agent(mg/kg) Lead (Pb) 0.12 0.004 Copper (Cu) 2.42 1.28

[0127] The test results showed that the Lead (Pb) leaching toxic concentration of the yam sample before stabilization treatment was 0.012 mg/kg (i.e., 12 g/Kg), after stabilization treatment, the Lead (Pb) leaching toxic concentration of the yam sample was 4 g/Kg, that is, the leaching toxic concentrations of heavy metal Lead (Pb) of the yam with addition of 5.0 g of the heavy metal stabilizing agent as described in above Example 12(2) was reduced by about 67%. The copper (Cu) leaching toxic concentration of the yam before stabilization treatment was 2.42 mg/kg, the copper (Cu) leaching toxic concentration of the yam after stabilization treatment was 1.28 mg/kg, that is, the leaching toxicity of copper (Cu) of 250 g of yam with addition of 5.0 g of the heavy metal stabilizing agent was decreased by about 47% at the same time.