SELF-AGGREGATING HYDROUS PHOSPHOLIPID AND PREPARATION METHOD THEREOF

Abstract

The invention belongs to the technical field of phospholipid processing, in particular to a self-aggregating hydrous phospholipid and a preparation method thereof. The self-aggregating hydrous phospholipid, the main components of the self-aggregating hydrous phospholipid are phospholipids, oil and water, the water content is 70-80 g/100 g, and the acetone-insoluble content on a dry basis is 92.5-95.5 g/100 g. Preferably, the self-aggregating hydrous phospholipid is a brown translucent fluid. The present invention is used to overcome the defects of low acetone-insoluble content of the hydrous phospholipid prepared by the existing method and the long-term dependence of the industry on the solvent method to prepare powder phospholipid, and to solve the technical problem that the hydration method powder phospholipid cannot realize industrial production.

Claims

1. A self-aggregating hydrous phospholipid, wherein the main components of the self-aggregating hydrous phospholipid are phospholipids, oil and water, the water content is 70-80 g/100 g, and the acetone-insoluble content on a dry basis is 92.5-95.5 g/100 g.

2. The self-aggregating hydrous phospholipid according to claim 1, wherein the sensory index of the self-aggregating hydrous phospholipid is a brown translucent fluid.

3. A preparation method of the self-aggregating hydrous phospholipid according to claim 1, comprising the steps of: soaking soybean oil sediments in water to obtain saturated water-absorbing oil sediments, and settling naturally to obtain final product.

4. A preparation method of the self-aggregating hydrous phospholipid according to claim 2, comprising the steps of: soaking soybean oil sediments in water to obtain saturated water-absorbing oil sediments, and settling naturally to obtain final product.

5. The preparation method according to claim 3, wherein the mass ratio of described soybean oil sediment and water is 1:1-3.5.

6. The preparation method according to claim 3, wherein the soaking temperature is 60-95° C., the soaking time is 1-3 h, and the natural sedimentation time is 3-8 h.

7. The preparation method according to claim 3, wherein before the soaking, the soybean oil sediments are dispersed into granules in water by means of stirring, and the particle diameter is less than or equal to 5 mm.

8. The preparation method according to claim 3, wherein the preparation method further comprises adding electrolyte to the soaking system.

9. The preparation method according to claim 4 is wherein the mass ratio of described soybean oil sediment and water is 1:1-3.5.

10. The preparation method according to claim 4, wherein the soaking temperature is 60-95° C., the soaking time is 1-3 h, and the natural sedimentation time is 3-8 h.

11. The preparation method according to claim 4, wherein before the soaking, the soybean oil sediments are dispersed into granules in water by means of stirring, and the particle diameter is less than or equal to 5 mm.

12. The preparation method according to claim 4, wherein the preparation method further comprises adding electrolyte to the soaking system.

13. The preparation method according to claim 8, wherein the mass fraction of the electrolyte in water is 0.01-0.3%, the electrolyte includes at least one of acid, base or salt.

14. The preparation method according to claim 8, wherein the electrolyte is at least one of the following components: DL-sodium malic acid, L-malic acid, DL-malic acid, glacial acetic acid, citric acid, potassium citrate, sodium citrate, mono-citric acid Sodium, sodium gluconate, lactic acid, potassium lactate, sodium lactate, potassium carbonate, sodium carbonate, potassium bicarbonate, sodium bicarbonate, sodium sulfate, potassium chloride, potassium hydroxide, sodium hydroxide, hydrochloric acid, phosphoric acid, sodium chloride.

15. A powder phospholipid, comprising the self-aggregating hydrous phospholipid according to claim 1.

16. A powder phospholipid, comprising the self-aggregating hydrous phospholipid according to claim 2.

17. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 3.

18. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 4.

19. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 5.

20. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 6.

21. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 7.

22. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 8.

23. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 9.

24. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 10.

25. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 11.

26. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 12.

27. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 13.

28. A powder phospholipid, comprising the self-aggregating hydrous phospholipid prepared by the preparation method according to claim 14.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0107] FIG. 1 is the process flow chart of soybean oil sediment soaking and natural sedimentation to obtain self-aggregating hydrous phospholipids.

[0108] FIG. 2 is a schematic diagram of the process for obtaining self-aggregating hydrous phospholipids by soaking and naturally settling soybean oil sediments.

[0109] Wherein:

[0110] (a) is a schematic diagram of soybean oil sediment in water;

[0111] (b) is a schematic diagram of the soaking system in which soybean oil sediment particles are the dispersed phase and water is the continuous phase;

[0112] (c) is a schematic diagram of the self-aggregated hydrous phospholipids that begin to settle naturally in saturated water-absorbing oil sediments;

[0113] (d) is a schematic diagram of the self-aggregated hydrous phospholipids and the residues of oil sediments obtained by natural sedimentation of saturated water-absorbing oil sediments.

[0114] FIG. 3 is a process flow diagram for preparing solid phospholipids from aggregated hydrous phospholipids.

[0115] FIG. 4 is a schematic diagram of the process for preparing solid phospholipids by concentrating hydrous phospholipids.

[0116] FIG. 5 is a rheological characteristic diagram of the storage modulus G′ and the loss modulus G″ of the hydrous phospholipid elastomer prepared from the self-aggregated hydrous phospholipid in Application Example 1.

[0117] FIG. 6 is a rheological characteristic diagram of the storage modulus G′ and the loss modulus G″ of the hydrous phospholipid elastomer prepared from the self-aggregated hydrous phospholipid in Application Example 2.

[0118] Wherein:

[0119] (1) is continuous phase, water; (2) is the soybean oil sediment; (3) is the dispersed phase, soybean oil sediment particles; (4) is the saturated water-absorbing oil sediment; (5) is the self-aggregating hydrous phospholipid; (6) is the oil sediment residue; (7) is a concentrated hydrous phospholipid; (8) is a hydrous phospholipid elastomer; (9) is a solid phospholipid.

[0120] A is a soaking tank; B is a speed-regulating gear pump; C is a pipeline agitator; D is a continuous dryer.

DESCRIPTION OF THE EMBODIMENTS

[0121] The content of the present invention will be further described below with reference to the accompanying drawings. The experimental methods described in the following examples are conventional methods unless otherwise specified; the reagents and materials can be obtained from commercial sources unless otherwise specified.

[0122] The vacuum is 0.01-0.004 MPa.

[0123] Definition of acetone-insoluble yield on a dry basis for self-aggregating hydrous phospholipids

(Yield of acetone-insoluble matter on a dry basis for self-aggregating hydrous phospholipids)=(Acetone-insoluble weight on a dry basis of self-aggregating hydrous phospholipids)/(Soybean oil sediment dry basis acetone insoluble weight).

Example 1

[0124] A self-aggregating hydrous phospholipid, the preparation process of which is shown in FIG. 1 and (a)-(b) in FIG. 2, includes the following steps:

[0125] (1) Soaking. The soybean oil sediment is taken and added to water, and the oil sediment is dispersed in the water into granules by stirring to form a soaking system in which the soybean oil sediment particles are the dispersed phase and the water is the continuous phase.

[0126] The soybean oil sediment is soaked at 60° C. for 3 hours to obtain saturated water-absorbing oil sediment. Saturated water-absorbing oil sediments are prepared when brown self-aggregating hydrous phospholipids appeared.

[0127] The soybean oil sediment comes from COFCO Jiayue (Tianjin) Co., Ltd., and its material composition is: water content 41.03 g/100 g, dry basis acetone insoluble content 61.13 g/100 g; the water is drinking water; The mass ratio of oil sediment to water is 1:1; the particle size of the oil sediment particles is 0.3-3 mm.

[0128] (2) Natural subsidence. The saturated water-absorbing oil sediments are kept at the soaking temperature, and settled naturally for 3 hours to obtain self-aggregating hydrous phospholipids and oil sediments residues.

[0129] The water content of the obtained self-aggregating hydrous phospholipids is 77.78 g/100 g, the content of acetone-insoluble matter on dry basis is 93.81 g/100 g, the sensory index is brown translucent fluid, and the yield of acetone-insoluble matter on dry basis is 75.63%.

Example 2

[0130] A self-aggregating hydrous phospholipid, the preparation process of which is shown in FIG. 1 and (a)-(b) in FIG. 2, includes the following steps:

[0131] (1) Soaking. The soybean oil sediment is taken and added to water, and the oil sediment is dispersed in the water into granules by stirring to form a soaking system in which the soybean oil sediment particles are the dispersed phase and the water is the continuous phase.

[0132] The soybean oil sediment is soaked at 70° C. for 3 hours to obtain saturated water-absorbing oil sediment. Saturated water-absorbing oil sediments are prepared when brown self-aggregating hydrous phospholipids appeared.

[0133] The soybean oil sediment comes from COFCO (Jiujiang) Co., Ltd., and its material composition is: water content 37.56 g/100 g, dry basis acetone insoluble content 60.87 g/100 g; the water is drinking water containing 0.07% sodium chloride by weight; The mass ratio of oil sediment to water is 1:1.5; the particle size of the oil sediment particles is 0.3-3 mm.

[0134] (2) Natural subsidence. The saturated water-absorbing oil sediments are kept at the soaking temperature, and settled naturally for 8 hours to obtain self-aggregating hydrous phospholipids and oil sediments residues.

[0135] The water content of the obtained self-aggregating hydrous phospholipids is 74.00 g/100 g, the content of acetone-insoluble matter on dry basis is 93.75 g/100 g, the sensory index is brown translucent fluid, and the yield of acetone-insoluble matter on dry basis is 78.09%.

Example 3

[0136] A self-aggregating hydrous phospholipid, the preparation process of which is shown in FIG. 1 and (a)-(b) in FIG. 2, includes the following steps:

[0137] (1) Soaking. The soybean oil sediment is taken and added to water, and the oil sediment is dispersed in the water into granules by stirring to form a soaking system in which the soybean oil sediment particles are the dispersed phase and the water is the continuous phase.

[0138] The soybean oil sediment is soaked at 80° C. for 2 hours to obtain saturated water-absorbing oil sediment. Saturated water-absorbing oil sediments are prepared when brown self-aggregating hydrous phospholipids appeared.

[0139] The soybean oil sediment comes from COFCO (Huanggang) Co., Ltd., and its material composition is: water content 38.42 g/100 g, dry basis acetone insoluble content 61.02 g/100 g; The water is purified drinking water containing 0.05% lactic acid at a concentration of 80%; The mass ratio of oil sediment to water is 1:2; the particle size of the oil sediment particles is 0.3-3 mm.

[0140] (2) Natural subsidence. The saturated water-absorbing oil sediments are kept at the soaking temperature, and settled naturally for 4 hours to obtain self-aggregating hydrous phospholipids and oil sediments residues.

[0141] The water content of the obtained self-aggregating hydrous phospholipids is 73.12 g/100 g, the content of acetone-insoluble matter on dry basis is 92.53 g/100 g, the sensory index is brown translucent fluid, and the yield of acetone-insoluble matter on dry basis is 80.72%.

Example 4

[0142] A self-aggregating hydrous phospholipid, the preparation process of which is shown in FIG. 1 and (a)-(b) in FIG. 2, includes the following steps:

[0143] (1) Soaking. The soybean oil sediment is taken and added to water, and the oil sediment is dispersed in the water into granules by stirring to form a soaking system in which the soybean oil sediment particles are the dispersed phase and the water is the continuous phase.

[0144] The soybean oil sediment is soaked at 90° C. for 2 hours to obtain saturated water-absorbing oil sediment. Saturated water-absorbing oil sediments are prepared when brown self-aggregating hydrous phospholipids appeared.

[0145] The soybean oil sediment comes from Bunge (Nanjing) Grain and Oil Co., Ltd., and its material composition is: water content 39.78 g/100 g, dry basis acetone insoluble content 62.05 g/100 g; the water is drinking water containing 0.03% sodium hydroxide by weight; The mass ratio of oil sediment to water is 1:2.5; the particle size of the oil sediment particles is 0.3-3 mm.

[0146] (2) Natural subsidence. The saturated water-absorbing oil sediments are kept at the soaking temperature, and settled naturally for 5 hours to obtain self-aggregating hydrous phospholipids and oil sediments residues.

[0147] The water content of the obtained self-aggregating hydrous phospholipids is 77.56 g/100 g, the content of acetone-insoluble matter on dry basis is 95.42 g/100 g, the sensory index is brown translucent fluid, and the yield of acetone-insoluble matter on dry basis is 82.71%.

Example 5

[0148] A self-aggregating hydrous phospholipid, the preparation process of which is shown in FIG. 1 and (a)-(b) in FIG. 2, includes the following steps:

[0149] (1) Soaking. The soybean oil sediment is taken and added to water, and the oil sediment is dispersed in the water into granules by stirring to form a soaking system in which the soybean oil sediment particles are the dispersed phase and the water is the continuous phase.

[0150] The soybean oil sediment is soaked at 95° C. for 1 hour to obtain saturated water-absorbing oil sediment. Saturated water-absorbing oil sediments are prepared when brown self-aggregating hydrous phospholipids appeared.

[0151] The soybean oil sediment comes from COFCO (Jiujiang) Co., Ltd., and its material composition is: water content 37.69 g/100 g, dry basis acetone insoluble content 63.45 g/100 g; The water is drinking water containing citric acid and sodium chloride, wherein, the added amount of citric acid is 0.028% by weight of water, and the added amount of sodium chloride is 0.052% by weight of water; The mass ratio of oil sediment to water is 1:3; the particle size of the oil sediment particles is 0.3-3 mm.

[0152] (2) Natural subsidence. The saturated water-absorbing oil sediments are kept at the soaking temperature, and settled naturally for 6 hours to obtain self-aggregating hydrous phospholipids and oil sediments residues.

[0153] The water content of the obtained self-aggregating hydrous phospholipids is 72.33 g/100 g, the content of acetone-insoluble matter on dry basis is 93.65 g/100 g, the sensory index is brown translucent fluid, and the yield of acetone-insoluble matter on dry basis is 83.35%.

Example 6

[0154] A self-aggregating hydrous phospholipid, the preparation process of which is shown in FIG. 1 and (a)-(b) in FIG. 2, includes the following steps:

[0155] (1) Soaking. The soybean oil sediment is taken and added to water, and the oil sediment is dispersed in the water into granules by stirring to form a soaking system in which the soybean oil sediment particles are the dispersed phase and the water is the continuous phase.

[0156] The soybean oil sediment is soaked at 95° C. for 1 hour to obtain saturated water-absorbing oil sediment. Saturated water-absorbing oil sediments are prepared when brown self-aggregating hydrous phospholipids appeared.

[0157] The soybean oil sediment comes from Chinatex Grain and Oil (Dongguan) Co., Ltd., and its material composition is: water content 40.23 g/100 g, dry basis acetone insoluble content 62.39 g/100 g; The water is purified drinking water containing 0.038% citric acid by weight; The mass ratio of oil sediment to water is 1:3.5; the particle size of the oil sediment particles is 0.3-3 mm.

[0158] (2) Natural subsidence. The saturated water-absorbing oil sediments are kept at the soaking temperature, and settled naturally for 7 hours to obtain self-aggregating hydrous phospholipids and oil sediments residues.

[0159] The water content of the obtained self-aggregating hydrous phospholipids is 73.01 g/100 g, the content of acetone-insoluble matter on dry basis is 94.18 g/100 g, the sensory index is brown translucent fluid, and the yield of acetone-insoluble matter on dry basis is 83.98%.

Comparative Example 1

[0160] A method for preparing hydrated phospholipids from soybean oil sediments, which is derived from a method for preparing hydrated phospholipids from soybean oil sediments disclosed in patent CN107325125A, comprising the following steps:

[0161] 0.53 times of drinking purified water and 0.03% of sulfuric acid are added to soybean oil sediments, mixed well, and the mixture is heated to 85° C. and kept for 6 hours. Then, centrifuge at 85° C. and 4500 r/min for 5 min to obtain hydrated phospholipids.

[0162] The soybean oil sediment is produced by COFCO (Huanggang) Co., Ltd., and its water content is 38.42 g/100 g, the dry acetone-insoluble content is 61.02 g/100 g. The water content of the obtained hydrated phospholipid is 64.03 g/100 g, the content of acetone-insoluble matter on a dry basis is 90.01 g/100 g, and the sensory index is a brown translucent fluid.

[0163] The main difference between the present invention and the hydrated phospholipid prepared in Comparative Example 1 includes the following aspects:

[0164] First, the hydration method and the water content of the phospholipids are different. Hydrated phospholipids are prepared by a homogeneous hydration method, in which soybean oil sediments and water need to be mixed evenly, and the amount of water added in the hydration operation is 0.25-0.74 times the weight of the oil sediments. Too much water will cause emulsification. Therefore, the water absorption of hydrated phospholipids is far from saturated, and the water content of phospholipids is only 64.03 g/100 g.

[0165] The self-aggregating hydrous phospholipid prepared by the present invention is prepared by soaking and hydration method. In the method, soybean oil sediments are in a granular state as a dispersed phase and water is a continuous phase to form a soaking system. In this process, the amount of water added is 1.0-3.5 times the weight of the oil sediment. The phospholipids are saturated with excess free water in the surrounding, with a phospholipid saturation value of 70-80 g/100 g. Only when the water content of phospholipids reaches saturation, the acetone-insoluble content of phospholipids can reach the maximum value of 92.5-95.5 g/100 g.

[0166] The water absorption of phospholipids to achieve saturation has the following effects, one is that the acetone-insoluble content of the phospholipids is the highest; the other is that the metal salts of the phospholipids are separated; The third is to facilitate the separation of phospholipids, phospholipid metal salts and oils in oil sediments.

[0167] Second, the phospholipid purity is different. The acetone-insoluble content of the hydrated phospholipids is 90-92 g/100 g on a dry basis,

[0168] The dry basis acetone-insoluble content of the self-aggregating hydrous phospholipid of the present invention is 92.5-95.5 g/100 g, which is the highest content in the hydration method phospholipid at present, and has approached or even reached the level of 95-98 g/100 g by the solvent method.

Comparative Example 2

[0169] A method for preparing liquid crystal phospholipid from soybean oil sediment, which is derived from the document “Separation and Purification of Soybean Phosphatides in Liquid Crystal Phase”, comprising the following steps:

[0170] 0.67 times of purified drinking water and soybean oil are mixed evenly, the mixture is heated to 70° C., kept for 4 hours, and then centrifuged at 70° C. and 4500 r/min for 5 minutes to obtain liquid crystal phospholipids.

[0171] The soybean oil sediment is produced by China Textile Grain and Oil (Dongguan) Co., Ltd., and its water content is 40.23 g/100 g, the dry acetone-insoluble content is 62.39 g/100 g.

[0172] The water content of the obtained liquid crystal phospholipid is 63.89 g/100 g, the content of acetone-insoluble matter on a dry basis is 86.23 g/100 g, and the sensory index is a brown translucent fluid.

[0173] The liquid crystalline phospholipid is passed through a circular feed port with a pore diameter of 2 mm, and is placed on a drying tray, and dried in an intermittent vacuum drying oven at 65° C. for 240 min to obtain a brown block solid phospholipid. The water content of solid phospholipid is 6.38 g/100 g, and the content of acetone-insoluble matter on a dry basis is 86.23 g/100 g. The brown solid phospholipid is pulverized, passed through an 18-mesh sieve, and dried in a vacuum drying oven at 60° C. for 30 min to obtain powdered phospholipid. The water content of powder phospholipids is 1.24 g/100 g, the content of acetone-insoluble matter on a dry basis is 86.23%, and the sensory index is brown powder.

[0174] Comparing the product of the present invention and the liquid crystal phospholipid of Comparative Example 2, it is found that the differences mainly include the following aspects:

[0175] First, the degree of hydration is different. The water content of liquid crystal phospholipids is only 63.89 g/100 g.

[0176] Liquid crystal phospholipids are prepared by homogeneous hydration method, in which soybean oil sediments and water need to be mixed evenly, and the amount of water added needs to be strictly controlled, otherwise emulsification will occur. The water uptake of phospholipids is far from reaching saturation. This defect described above is exactly the same as that of hydrated phospholipids.

[0177] The self-aggregating hydrous phospholipid prepared by the present invention is prepared by soaking and hydration method. In the method, soybean oil sediments are in a granular state as a dispersed phase and water is a continuous phase to form a soaking system. In this process, the amount of water added is 1.0-3.5 times the weight of the oil sediment. The phospholipids are saturated with excess free water in the surrounding, with a phospholipid saturation value of 70-80 g/100 g. Only when the water content of phospholipids reaches saturation, the acetone-insoluble content of phospholipids can reach the maximum value.

[0178] Second, the phospholipid purity is different. The dry acetone-insoluble content of the liquid crystal phospholipids is 86.06 g/100 g, and the phospholipid metal salts could not be removed. The solid phospholipids prepared by drying are light brown, and the powder phospholipids are dark brown.

[0179] The acetone-insoluble content on a dry basis of the self-aggregating hydrous phospholipid of the present invention is 92.5-95.5 g/100 g, and the content of the acetone-insoluble matter on a dry basis is quite different.

[0180] Both solid phospholipids and powder phospholipids prepared from self-aggregating hydrous phospholipid of the present invention are yellow.

Comparative Example 3

[0181] A preparation method of powdered soybean lecithin, which is derived from patent CN103665029A preparation method of powdered soybean lecithin, comprising the following steps:

[0182] (1) Soybean oil sediments and anhydrous acetone are mixed at a weight ratio of 1:10, stirred and extracted under normal pressure and room temperature for 20 minutes, centrifuged for 1 minute with 4000 rpm centrifugal speed, and the solid part is collected.

[0183] The soybean oil sediment comes from Bunge (Nanjing) Grain and Oil Co., Ltd., and its material composition is as follows: water content is 39.78 g/100 g, acetone-insoluble content on a dry basis is 62.05 g/100 g.

[0184] (2) The solid part obtained in step (1) is mixed with anhydrous acetone at a weight ratio of 1:10, stirred and extracted under normal pressure and room temperature for 20 min, and then centrifuged at a centrifugal speed of 5000 rpm to collect the solid part.

[0185] The solid part is crushed and dried under vacuum at 60° C. for 5 hours to obtain soybean powder phospholipid.

[0186] The dry acetone-insoluble content of the powdered phospholipid is 95.30 g/100 g, the drying reduction is 0.65 g/100 g, and the color is brown.

[0187] Comparing the product of the present invention and the powder phospholipid of Comparative Example 3, it is found that the differences mainly include the following aspects:

[0188] First, the difference between environmental protection and food safety:

[0189] In Comparative Example 3, a method for preparing powdered phospholipid by a solvent method is provided, in which solvent volatilization will cause pollution to the environment. At the same time, the residual solvent has a potential food safety hazard.

[0190] The method for preparing the powdered phospholipid by the product of the present invention belongs to the hydration method, and there is no environmental pollution. The drying reduction of the product is less than or equal to 2 g/100 g, and the drying reduction component is water, and there is no food safety hazard.

[0191] Second, the color is different. The powdered phospholipids prepared in Comparative Example 3 could not be freed from phospholipid metal salts. In order to reduce the residual amount of solvent, the drying time of powdered phospholipids during the preparation process is longer, and the color of the product is darker. While, the self-aggregating hydrous phospholipid of the present invention has short drying time when preparing powder phospholipid, and the color of the phospholipid is natural yellow.

Application 1

[0192] The self-aggregating hydrous phospholipids prepared in Example 2 are used in the preparation of solid phospholipids and powdered phospholipids.

[0193] The preparation process is shown in FIG. 3 and FIG. 4, including the following steps:

[0194] (1) Concentrating the self-aggregating hydrous phospholipid prepared in Example 2 to obtain a concentrated hydrous phospholipid;

[0195] (2) Stirring the concentrated hydrous phospholipid to obtain a hydrous phospholipid elastomer;

[0196] (3) Drying the hydrous phospholipid elastomer to obtain a bar-shaped solid phospholipid;

[0197] (4) Pulverizing, sieving and drying the strip-shaped solid phospholipids to obtain powdered phospholipids.

[0198] In step (1), the self-aggregating hydrous phospholipid of Example 2 is concentrated to 55 g/100 g in a vacuum thin-film evaporator at 95° C. to obtain a concentrated hydrous phospholipid with a dry-base acetone-insoluble content of 93.75 g/100 g, and brown translucent fluid.

[0199] In step (2), the concentrated hydrous phospholipid of step (1) is pushed into the mixer at a speed of 80 cm/min, the stirring revolution is 900 rpm, and the stirring time is 10 s to obtain a continuous output hydrous phospholipid elastomer.

[0200] The water content and acetone insoluble content of the hydrous phospholipid elastomer are the same as those of the concentrated hydrous phospholipid, but the sensory indicators changed to yellow opaque semi-solid.

[0201] In step (3), the hydrous phospholipid elastomer continuously output in step (2) is fed into a continuous atmospheric pressure dryer through a set of feed ports with a pore diameter of 3 mm, and dried at 150° C. for 8 minutes to obtain continuous output strip solids phospholipids. The water content of the strip-shaped solid phospholipid is 7.23 g/100 g, the content of acetone-insoluble matter on a dry basis is 93.75 g/100 g, and the sensory index is a yellow strip-shaped solid.

[0202] In step (4), the solid phospholipids in strips of step (3) are pulverized, passed through an 18-mesh sieve, and dried in a double-cone cyclotron vacuum dryer at 60° C. for 40 min to obtain powder phospholipids.

[0203] The powder phospholipid has a water content of 1.43 g/100 g, a dry acetone-insoluble content of 93.98 g/100 g. The sensory index is a yellow powder.

[0204] The product implements the national standard “GB28401 Food Additive Phospholipids”.

Application 2

[0205] The self-aggregating hydrous phospholipids prepared in Example 4 are used in the preparation of solid phospholipids and powdered phospholipids.

[0206] The preparation process is shown in FIG. 3 and FIG. 4, including the following steps:

[0207] (1) Concentrating the self-aggregating hydrous phospholipid prepared in Example 4 to obtain a concentrated hydrous phospholipid;

[0208] (2) Stirring the concentrated hydrous phospholipid to obtain a hydrous phospholipid elastomer;

[0209] (3) Drying the hydrous phospholipid elastomer to obtain a bar-shaped solid phospholipid;

[0210] (4) Pulverizing, sieving and drying the strip-shaped solid phospholipids to obtain powdered phospholipids.

[0211] In step (1), the self-aggregating hydrous phospholipid of Example 4 is concentrated to 45 g/100 g in a vacuum thin-film evaporator at 105° C. to obtain a concentrated hydrous phospholipid with a dry-base acetone-insoluble content of 95.42 g/100 g, and brown translucent fluid.

[0212] In step (2), the concentrated hydrous phospholipid of step (1) is pushed into the mixer at a speed of 40 cm/min, the stirring revolution is 1100 rpm, and the stirring time is 20 s to obtain a continuous output hydrous phospholipid elastomer.

[0213] The water content and acetone insoluble content of the hydrous phospholipid elastomer are the same as those of the concentrated hydrous phospholipid, but the sensory indicators changed to yellow opaque semi-solid.

[0214] In step (3), the hydrous phospholipid elastomer continuously output in step (2) is fed into a continuous atmospheric pressure dryer through a set of feed ports with a pore diameter of 4 mm, and dried at 130° C. for 15 minutes to obtain continuous output strip solids phospholipids. The water content of the strip-shaped solid phospholipid is 5.32 g/100 g, the content of acetone-insoluble matter on a dry basis is 95.42 g/100 g, and the sensory index is a yellow strip-shaped solid.

[0215] In step (4), the solid phospholipids in strips of step (3) are pulverized, passed through an 18-mesh sieve, and dried in a double-cone cyclotron vacuum dryer at 60° C. for 30 min to obtain powder phospholipids.

[0216] The powder phospholipid has a water content of 1.18 g/100 g, a dry acetone-insoluble content of 95.42 g/100 g. The sensory index is a yellow powder.

[0217] The product implements the national standard “GB28401 Food Additive Phospholipids”.

Test Example 1

[0218] The hydrous phospholipid elastomers prepared in Application Example 1 and Application Example 2 are characterized by rheology, and the test results are shown in FIG. 5 and FIG. 6, respectively.

[0219] The instruments and parameters used for testing are: RS6000 rotational rheometer (HAAKE, Germany), Z41Ti coaxial drum sensing system is used for the measuring rotor (the diameters of the drum and the rotor are 43.40 mm and 41.42 mm, respectively). The thickness of the sample in the center of the sensor system is 3 mm.

[0220] It can be seen from FIG. 5 and FIG. 6 that the storage modulus G′ is more than 5 times larger than the loss modulus G″ in the measured frequency range of the hydrous phospholipid elastomers provided in Application Example 1 and Application Example 2, which is almost no matter with the frequency of measurement.

[0221] The above detailed description is a specific description of one of the feasible embodiments of the present invention, which is not intended to limit the scope of the present invention. Any equivalent implementation or modification that does not depart from the present invention shall be included in the present invention.