METHOD FOR EXTRACTING PLANT ESSENTIAL OIL WITH DUAL AUXILIARIES

Abstract

The present disclosure discloses a method for extracting a plant essential oil with dual auxiliaries, which includes: using an aromatic plant as a raw material, adding an extracting liquid prepared from the dual auxiliaries and water, stirring evenly for raw material wetting back, then distilling and collecting the essential oil, where the dual auxiliaries include a component A and a component B, the component A includes at least one of choline chloride and betaine, and the component B includes at least one of a natural acid, an amine, an alcohol and a saccharide.

Claims

1. A method for extracting a plant essential oil with dual auxiliaries, comprising: using an aromatic plant as a raw material, stirring an extracting liquid prepared from the dual auxiliaries used for extraction and water evenly for wetting back, then distilling and collecting the essential oil; wherein the dual auxiliaries comprise a component A and a component B, the component A comprises at least one of choline chloride and betaine, and the component B comprises at least one of a natural acid, an amine, an alcohol and a saccharide.

2. The method of claim 1, wherein the natural acid is at least one selected from the group consisting of citric acid, malic acid, tartaric acid, malonic acid, mucic acid and amino acid; the amine is at least one selected from the group consisting of urea and methylurea; the alcohol is at least one selected from the group consisting of ethylene glycol, 1,4-butanediol, sorbitol and glycerol. and the saccharide is at least one selected from the group consisting of a monosaccharide, a disaccharide and a polysaccharide.

3. The method of claim 2, wherein the monosaccharide is at least one selected from the group consisting of maltose and sorbose.

4. The method of claim 1, wherein a mass ratio of the component A to the component B is in a range of 1:(0.1-10).

5. The method of claim 4, wherein a mass ratio of the component A to the component B is in a range of 1:(0.5-5).

6. The method of claim 1, wherein the aromatic plant is used in any one or more of its flowers, leaves, stems and roots.

7. The method of claim 1, wherein raw materials of the dual auxiliaries are added into deionized water together or in steps, and stirred evenly to prepare the extracting liquid.

8. The method of claim 1, wherein a mass ratio of the dual auxiliaries to the extracting liquid is in a range of (0.1-1000):100.

9. The method of claim 1, wherein the distillation is performed by enzyme-assisted distillation, ultrasonic-assisted distillation or ohm-assisted heating-lamp distillation, supercritical carbon dioxide extraction or subcritical water extraction.

Description

DETAILED DESCRIPTION

[0018] In order to make the present disclosure more apparent, the preferred embodiments of the present disclosure are described in detail as follows.

[0019] In the context of the present disclosure, the term “dual auxiliaries” may be referred to as “dual extracting auxiliaries”, which are equivalent in meaning. In the present disclosure, the extracting liquid prepared from the dual auxiliaries for extraction may be achieved by diluting dual extracting auxiliaries with water. In the present disclosure, the material A and the material B may be put into the water phase together or stepwisely to form the extracting liquid containing the dual auxiliaries. In the present disclosure, the distillation may be performed by hydrodistillation.

Example 1

[0020] A formulation of dual auxiliaries (A+B) for essential oil extraction is shown in Table 1.

TABLE-US-00001 TABLE 1 A B A:B (mass ratio) Betaine Citric acid 1:(0.5-5) Malic acid 1:(0.5-5) Tartaric acid 1:(0.5-5) Malonic acid 1:(0.5-5) Urea 1:(0.5-5) Methylurea 1:(0.5-5) Ethylene 1:(0.5-5) Glycol 1,4-butanediol 1:(0.5-5) Mucic acid 1:(0.5-5) Proline 1:(0.5-5) Sorbitol 1:(0.5-5) Maltodextrin 1:(0.5-5) Choline chloride Citric acid 1:(0.5-5) Malic acid 1:(0.5-5) Tartaric acid 1:(0.5-5) Malonic acid 1:(0.5-5) Urea 1:(0.5-5) Methylurea 1:(0.5-5) Ethylene 1:(0.5-5) Glycol 1,4-butanediol 1:(0.5-5) Mucic acid 1:(0.5-5) Proline 1:(0.5-5) Sorbitol 1:(0.5-5) Maltodextrin 1:(0.5-5)

Example 2

[0021] A method for extracting a plant essential oil (taking Dill seed as an example) was performed by the following steps:

[0022] (1) 100 g of Dill seed was taken, crushed with a blender, and added into a 2 L flask.

[0023] (2) 33.3 g of betaine and 66.6 g of malic acid were taken and mixed in a beaker.

[0024] (3) 500 g of deionized water was added into the beaker and stirred evenly, obtaining an extracting liquid.

[0025] (4) The resultant extracting liquid containing the dual auxiliaries was poured into the flask containing 100 g of the crushed Dill seed and subjected to an ultrasonic treatment.

[0026] (5) The ultrasonic treated mixture was distilled for 3 hours and a Dill seed essential oil was obtained.

Example 3

[0027] A method for extracting a plant essential oil (taking Dill seed as an example) was performed by the following steps:

[0028] (1) 100 g of Dill seed was taken, crushed with a blender, and added into a 2 L flask.

[0029] (2) 66.6 g of betaine and 33.3 g of citric acid were taken and mixed in a beaker.

[0030] (3) 500 g of deionized water was added into the beaker and stirred evenly.

[0031] (4) 100 g of the crushed Dill seed was added into the beaker and subjected to an ultrasonic treatment.

[0032] (5) The ultrasonic treated mixture was distilled for 3 hours and a Dill seed essential oil was obtained.

Example 4

[0033] A method for extracting a plant essential oil (taking Dill seed as an example) was performed by the following steps:

[0034] (1) 100 g of Dill seed was taken, crushed with a blender, and added into a 2 L flask.

[0035] (2) 16.6 g of betaine and 83.4 g of citric acid were taken and mixed in a beaker.

[0036] (3) 500 g of deionized water was added into the beaker and stirred evenly.

[0037] (4) 100 g of the crushed Dill seed was added into the beaker and subjected to an ultrasonic treatment.

[0038] (5) The ultrasonic treated mixture was distilled for 3 hours and a Dill seed essential oil was obtained.

Example 5

[0039] A method for extracting a plant essential oil (taking Dill seed as an example) was performed by the following steps:

[0040] (1) 100 g of Dill seed was taken, crushed with a blender, and added into a 2 L flask.

[0041] (2) 0.83 g of betaine and 4.17 g of citric acid were taken and mixed in a beaker.

[0042] (3) 500 g of deionized water was added into the beaker and stirred evenly.

[0043] (4) 100 g of the crushed Dill seed was added into the beaker and subjected to an ultrasonic treatment.

[0044] (5) The ultrasonic treated mixture was distilled for 3 hours and a Dill seed essential oil was obtained.

Example 6

[0045] A method for extracting a plant essential oil (taking Dill seed as an example) was performed by the following steps:

[0046] (1) 100 g of Dill seed was taken, crushed with a blender, and added into a 2 L flask.

[0047] (2) 33.3 g of betaine and 66.6 g of tartaric acid were taken and mixed in a beaker.

[0048] (3) 500 g of deionized water was added into the beaker and stirred evenly, obtaining an extracting liquid.

[0049] (4) The resultant extracting liquid containing the dual auxiliaries was poured into the flask containing 100 g of the crushed Dill seed and subjected to an ultrasonic treatment.

[0050] (5) The ultrasonic treated mixture was distilled for 3 hours and a Dill seed essential oil was obtained.

Example 7

[0051] A method for extracting a plant essential oil (taking Fructus foeniculi as an example) was performed by the following steps:

[0052] (1) 100 g of Fructus foeniculi was taken, crushed with a blender, and added into a 2 L flask.

[0053] (2) 33.3 g of betaine and 66.6 g of citric acid were taken and mixed in a beaker.

[0054] (3) 500 g of deionized water was added into the beaker and stirred evenly, obtaining an extracting liquid.

[0055] (4) The resultant extracting liquid containing the dual auxiliaries was poured into the flask containing 100 g of the crushed Fructus foeniculi and subjected to an ultrasonic treatment.

[0056] (5) The ultrasonic treated mixture was distilled for 3 hours and a Fructus foeniculi essential oil was obtained.

Example 8

[0057] A method for extracting a plant essential oil (taking Chinese Eaglewood as an example) was performed by the following steps:

[0058] (1) 100 g of Chinese Eaglewood was taken, crushed with a blender, and added into a 2 L flask.

[0059] (2) 33.3 g of betaine and 66.6 g of citric acid were taken and mixed in a beaker.

[0060] (3) 500 g of deionized water was added into the beaker and stirred evenly, obtaining an extracting liquid.

[0061] (4) The resultant extracting liquid containing the dual auxiliaries was poured into the flask containing 100 g of the crushed Chinese Eaglewood and subjected to an ultrasonic treatment.

[0062] (5) The ultrasonic treated mixture was distilled for 3 hours and a Chinese Eaglewood essential oil was obtained.

Example 9

[0063] A method for extracting a plant essential oil (taking dwarf Fructus foeniculi as an example) was performed by the following steps:

[0064] (1) 100 g of dwarf Fructus foeniculi was taken, crushed with a blender, and added into a 2 L flask.

[0065] (2) 33.3 g of choline chloride and 66.6 g of citric acid were taken and mixed in a beaker.

[0066] (3) 500 g of deionized water was added into the beaker and stirred evenly, obtaining an extracting liquid.

[0067] (4) The resultant extracting liquid containing the dual auxiliaries was poured into the flask containing 100 g of the crushed Fructus foeniculi and subjected to an ultrasonic treatment.

[0068] (5) The ultrasonic treated mixture was distilled for 3 hours and a Fructus foeniculi essential oil was obtained.

Example 10

[0069] A method for extracting a plant essential oil (taking dwarf Fructus foeniculi as an example) was performed by the following steps:

[0070] (1) 100 g of dwarf Fructus foeniculi was taken, crushed with a blender, and added into a 2 L flask.

[0071] (2) 20 g of choline chloride and 80 g of urea were taken and mixed in a beaker.

[0072] (3) 500 g of deionized water was added into the beaker and was stirred evenly, obtaining an extracting liquid.

[0073] (4) The resultant extracting liquid containing the dual auxiliaries was poured into the flask containing 100 g of the crushed Fructus foeniculi and subjected to an ultrasonic treatment.

[0074] (5) The ultrasonic treated mixture was distilled for 3 hours and a Fructus foeniculi essential oil was obtained.

Example 11

[0075] A method for extracting a plant essential oil (taking dwarf Fructus foeniculi as an example) was performed by the following steps:

[0076] (1) 100 g of dwarf Fructus foeniculi was taken, crushed with a blender, and added into a 2 L flask.

[0077] (2) 9.1 g of choline chloride and 90.9 g of sorbitol were taken and mixed in a beaker.

[0078] (3) 500 g of deionized water was added into the beaker and stirred evenly, obtaining an extracting liquid.

[0079] (4) The resultant extracting liquid containing the dual auxiliaries was poured into the flask containing 100 g of the crushed Fructus foeniculi and subjected to an ultrasonic treatment.

[0080] (5) The ultrasonic treated mixture was distilled for 3 hours and a Fructus foeniculi essential oil was obtained.

Example 12

[0081] A method for extracting a plant essential oil (taking dwarf Fructus foeniculi as an example) was performed by the following steps:

[0082] (1) 100 g of Fructus foeniculi was taken, crushed with a blender, and added into a 2 L flask.

[0083] (2) 0.5 g of choline chloride and 4.5 g of maltodextrin were taken and mixed in a beaker.

[0084] (3) 500 g of deionized water was added into the beaker and stirred evenly, obtaining an extracting liquid.

[0085] (4) The resultant extracting liquid containing the dual auxiliaries was poured into the flask containing 100 g of the crushed Fructus foeniculi and subjected to an ultrasonic treatment.

[0086] (5) The ultrasonic treated mixture was distilled for 3 hours and a Fructus foeniculi essential oil was obtained.

Example 13

[0087] A method for extracting a plant essential oil (taking dwarf Fructus foeniculi as an example) was performed by the following steps:

[0088] (1) Water was sprayed to dried raw material-dwarf Fructus foeniculi (a weight of water sprayed was 5-50% of the weight of dried dwarf Fructus foeniculi), crushed with a blender, and 100 grams of the crushed raw material were weighed and put into a 2 L flask.

[0089] (2) 0.91 g of choline chloride and 9.09 g of maltodextrin were taken and mixed in a beaker.

[0090] (3) 500 g of deionized water was added into the beaker and stirred evenly, obtaining an extracting liquid.

[0091] (4) The resultant extracting liquid containing the dual auxiliaries was poured into the flask containing 100 g of crushed Fructus foeniculi and subjected to an ultrasonic treatment.

[0092] (5) The ultrasonic treated mixture was distilled for 3 hours and a Fructus foeniculi essential oil was obtained.

Example 14

[0093] 30 g of Fructus foeniculi without crushing treatment and 5 g of the dual auxiliaries were added into 100 g of deionized water and distillation was performance as mentioned above.

[0094] The extraction rate of Fructus foeniculi essential oil was as shown in Table 2.

TABLE-US-00002 TABLE 2 With Choline chloride With Betaine (A) + Distillation (A) + Citric acid (B) Citric acid (B) with water in amass ratio of 1:2 in a mass ratio of 1:2 1.6 ± 0.2% 2.7 ± 0.15% 2.68 ± 0.17%

[0095] In Table 2, the “Choline chloride (A)+Citric acid (B)” were performed by distillation in water, and the “Choline Chloride (A)+Citric acid (B)” were performed by distillation in water.