CN111321034A - Method for extracting alpinia speciosa essential oil - Google Patents
Method for extracting alpinia speciosa essential oil Download PDFInfo
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- CN111321034A CN111321034A CN202010174282.2A CN202010174282A CN111321034A CN 111321034 A CN111321034 A CN 111321034A CN 202010174282 A CN202010174282 A CN 202010174282A CN 111321034 A CN111321034 A CN 111321034A
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- 239000000341 volatile oil Substances 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 50
- 235000013411 Alpinia speciosa Nutrition 0.000 title claims abstract description 46
- 244000041517 Etlingera elatior Species 0.000 title 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 56
- 239000000843 powder Substances 0.000 claims abstract description 46
- 244000060696 Alpinia speciosa Species 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000000605 extraction Methods 0.000 claims abstract description 37
- 235000013399 edible fruits Nutrition 0.000 claims abstract description 35
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011780 sodium chloride Substances 0.000 claims abstract description 28
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 22
- 239000011259 mixed solution Substances 0.000 claims abstract description 21
- 238000002791 soaking Methods 0.000 claims abstract description 21
- 239000000243 solution Substances 0.000 claims abstract description 21
- 238000007873 sieving Methods 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 238000001256 steam distillation Methods 0.000 claims abstract description 9
- 238000010298 pulverizing process Methods 0.000 claims abstract description 3
- 238000004821 distillation Methods 0.000 claims description 24
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 10
- 235000011152 sodium sulphate Nutrition 0.000 claims description 10
- 238000002604 ultrasonography Methods 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 10
- 241001506940 Alpinia japonica Species 0.000 description 9
- 238000004090 dissolution Methods 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 238000012216 screening Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000003204 osmotic effect Effects 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 230000003834 intracellular effect Effects 0.000 description 2
- 244000281702 Dioscorea villosa Species 0.000 description 1
- 240000000451 Zingiber zerumbet Species 0.000 description 1
- 235000014687 Zingiber zerumbet Nutrition 0.000 description 1
- 241000234299 Zingiberaceae Species 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 210000001672 ovary Anatomy 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- SWGJCIMEBVHMTA-UHFFFAOYSA-K trisodium;6-oxido-4-sulfo-5-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-2-sulfonate Chemical compound [Na+].[Na+].[Na+].C1=CC=C2C(N=NC3=C4C(=CC(=CC4=CC=C3O)S([O-])(=O)=O)S([O-])(=O)=O)=CC=C(S([O-])(=O)=O)C2=C1 SWGJCIMEBVHMTA-UHFFFAOYSA-K 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B9/00—Essential oils; Perfumes
- C11B9/02—Recovery or refining of essential oils from raw materials
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B9/00—Essential oils; Perfumes
- C11B9/02—Recovery or refining of essential oils from raw materials
- C11B9/027—Recovery of volatiles by distillation or stripping
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Fats And Perfumes (AREA)
- Medicines Containing Plant Substances (AREA)
Abstract
The invention discloses a method for extracting alpinia zerumbet essential oil, which comprises the following steps: pulverizing the fruits of Alpinia zerumbet, and sieving with 20-60 mesh sieve to obtain powder; adding water into the powder, mixing, soaking for 10-30min, and performing ultrasonic treatment at 40-60 deg.C for 5-10 min; distilling and extracting the mixed solution for 200-300min by adopting a steam distillation method; adding sodium chloride powder into the mixed solution to make the mass concentration of sodium chloride in the solution reach 1.0-1.6%, and continuously distilling and extracting for 30-60 min; collecting distillate, standing, separating to obtain upper oily liquid, adding anhydrous sodium sulfate, shaking, and separating to remove anhydrous sodium sulfate. The method can effectively solve the problems of low extraction efficiency and long extraction time of the existing alpinia zerumbet essential oil in the extraction process.
Description
Technical Field
The invention relates to the technical field of essential oil extraction, and particularly relates to a method for extracting alpinia zerumbet essential oil.
Background
The alpinia zerumbet is a alpinia zerumbet plant of the zingiberaceae family, the plant height can reach 3 meters, the leaves are needle-shaped, the base is gradually narrowed, the edge has short and soft hair, both surfaces have no hair, the panicle is in a general shape, droop, the inflorescence axis is purple red, the branches are extremely short, the small bract is elliptical, white, the top end is pink, flowers are wrapped when buds are formed, the split slices are long and round, milky white, the top end is pink, the labialis spoon is wide and oval, ovaries are golden and coarse hair, the seeds bloom in 4-6 months, and the fruits are grown in 7-10 months.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the method for extracting the alpinia zerumbet essential oil, which can effectively solve the problem of low extraction efficiency of the existing alpinia zerumbet essential oil in the extraction process.
In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows:
the extraction method of the alpinia zerumbet essential oil is characterized by comprising the following steps of:
(1) pulverizing and sieving Alpinia zerumbet fruit to obtain powder;
(2) adding water into the powder obtained in the step (1), uniformly mixing, soaking for 10-30min, and then carrying out ultrasonic treatment for 5-10min at 40-60 ℃;
(3) distilling and extracting the treated mixed solution in the step (2) for 200-300min by adopting a steam distillation method;
(4) adding sodium chloride powder into the mixed solution in the step (3) to enable the mass concentration of the sodium chloride in the solution to reach 1.0-1.6%, and continuing distillation and extraction for 30-60 min;
(5) and (4) collecting distillate distilled in the step (3) and the step (4), standing, separating to obtain an upper oily liquid, adding anhydrous sodium sulfate into the upper oily liquid, shaking, and separating to remove the anhydrous sodium sulfate to obtain the sodium sulfate.
The beneficial effects produced by adopting the scheme are as follows: the alpinia speciosa fruits are crushed, so that the contact surface with water in the subsequent extraction process can be accelerated, and the extraction efficiency of essential oil is improved; soaking the alpinia zerumbet powder in water for 10-30min, which is beneficial to the dynamic exchange of solution inside and outside the alpinia zerumbet cells, so as to accelerate the extraction efficiency of essential oil, and the soaking time is not too long, which causes the volatilization or hydrolysis of partial essential oil components after long-time soaking, thus reducing the yield; ultrasonic treatment at 40-60 deg.C can improve cavitation effect, improve impact force and shear force generated by ultrasonic wave, accelerate cell rupture, and facilitate outflow of essential oil in cell, and if the temperature during ultrasonic treatment is too high, not only can part of essential oil be decomposed, but also cavitation effect can be reduced; the ultrasonic treatment time is also proper, the essential oil components can be decomposed and damaged when the treatment time is too long, and the effect of breaking cells cannot be achieved when the ultrasonic treatment time is too short.
In the process of distilling the alpinia zerumbet powder by adopting a steam distillation method, essential oil components in the powder flow out of cells and are finally collected along with steam evaporation, and water is used as a solvent in a steam distillation mode, so that the method is environment-friendly and has the advantage of low cost, and the steam distillation mode is simple and convenient to operate and low in equipment cost.
During the extraction process by hydro-distillation, most essential oil in the alpinia zerumbet powder is extracted, sodium chloride powder is continuously added into water, the osmotic pressure of cells is changed, so that the concentration of the intracellular solution is smaller than that of the extracellular solution, the intracellular solution continuously permeates and flows out of the cells, the essential oil remained in the cells is further extracted, and the yield of the essential oil is further improved; and finally, adding anhydrous sodium sulfate into the obtained oily liquid, and effectively sucking out water in the oily liquid through the anhydrous sodium sulfate so as to improve the purity of the essential oil.
Further, crushing the alpinia zerumbet fruits in the step (1) and sieving the crushed alpinia zerumbet fruits by a sieve of 20-60 meshes.
Further, crushing the alpinia zerumbet fruits in the step (1) and sieving the crushed alpinia zerumbet fruits by a 40-mesh sieve.
The beneficial effects produced by adopting the scheme are as follows: the crushing process has the advantages that a part of cells are broken to cause the outflow of essential oil, the smaller the particles are after crushing, the more broken cells are, the larger the loss of the essential oil is, the larger the particles after crushing are, and the subsequent extraction is not facilitated, the crushed alpinia japonica fruits are sieved by a 40-mesh sieve, so that the loss of the essential oil can be reduced, and the subsequent extraction efficiency can be improved.
Further, the soaking time in the step (2) is 25-30 min.
Further, the soaking time in the step (2) is 26 min.
Further, the ultrasonic temperature in the step (2) is 45-55 ℃.
Further, the ultrasonic temperature in the step (2) was 50 ℃.
Further, the ultrasonic time in the step (2) is 7-8 min.
Further, the ultrasonic time in the step (2) is 7 min.
The beneficial effects produced by adopting the scheme are as follows: the powder is soaked for 26min, cells fully absorb water and swell, the water content in the cells is high, the damage effect of ultrasonic waves on the cells can be improved, then ultrasonic treatment is carried out for 7min at the temperature of 50 ℃, the cavitation effect is good, the purpose of cell damage can be met, and the loss of essential oil can be reduced.
Further, the ultrasonic treatment power in the step (2) is 15-20 KHz.
Further, the ultrasonic processing power in the step (2) is 16 KHz.
The beneficial effects produced by adopting the scheme are as follows: the processing power of 16KHz can further improve the idle call effect and reduce the loss of essential oil.
Further, the feed-liquid ratio of the powder to the water in the step (2) is 1: 4.5-7.
Further, the feed-liquid ratio of the powder to the water in the step (2) is 1: 6.
The beneficial effects produced by adopting the scheme are as follows: the ratio of the powder to the water is 1:6, so that the dissolution rate of the essential oil is the highest, the feed liquid ratio is low, the contact area of the powder and the solution is small, the dissolution rate of the essential oil is low, the solvent is increased along with the increase of the feed liquid ratio, the concentration of the essential oil in the solution is reduced, the contact area of the powder and the solvent is further increased, the dissolution rate and the dissolution rate of the essential oil are improved, the solvent amount is too large, the dissolution amount of the essential oil is increased, and the yield of the essential oil is also reduced.
Further, the temperature of the distillation extraction in the step (3) and the step (4) is 60-70 ℃.
Further, the temperature of the distillation extraction in the step (3) and the step (4) was 65 ℃.
The beneficial effects produced by adopting the scheme are as follows: distilling at 65 deg.C to avoid decomposition and damage of essential oil, and improve yield of essential oil.
Further, the distillation extraction time in step (3) was 180 min.
The beneficial effects produced by adopting the scheme are as follows: distilling for 180min to sufficiently extract essential oil components from the powder, and the long-term distilling process can destroy essential oil components and reduce essential oil quality.
Further, the mass concentration of sodium chloride in the solution in the step (4) is 1.2%, and the distillation extraction time is 40 min.
The beneficial effects produced by adopting the scheme are as follows: the concentration of the sodium chloride solution is too high, which affects the solubility of the essential oil in the solution and cannot achieve the purpose of improving the yield of the essential oil.
The beneficial effects produced by the invention are as follows:
1. crushing the alpinia speciosa fruits, increasing the contact area with a solvent, soaking the powder in water to increase the water content in the alpinia speciosa fruit cells and improve the subsequent ultrasonic treatment effect, destroying the alpinia speciosa fruit cells through the cavitation of ultrasonic waves to facilitate the outflow of essential oil components, then distilling and extracting in a steam distillation mode to evaporate the essential oil components along with steam, condensing the steam, separating oil from water to achieve the purpose of collecting the essential oil, adding sodium chloride into the aqueous solution to change the permeation inside and outside the cells, further extracting the essential oil remaining in the cells, firstly destroying the cells to facilitate the outflow of the essential oil, then distilling and extracting to extract most essential oil components, finally changing the osmotic pressure inside and outside the cells to improve the dissolution of the essential oil remaining in the cells, finally, the yield of the essential oil can be greatly improved.
2. The extraction method disclosed by the invention has the advantages that the used equipment is simple and easy to obtain, the extraction operation is simple and convenient, water is used as a solvent, the method is green and environment-friendly, the cost is low, the method is favorable for conversion, and the practicability is higher.
Detailed Description
Example 1
A method for extracting alpinia zerumbet essential oil comprises the following steps:
(1) screening the dry alpinia japonica fruits, removing impurities and mildewed fruits, and then crushing and sieving the crushed fruits by a 20-mesh sieve to obtain powder;
(2) adding water into the powder obtained in the step (1) to enable the material-liquid ratio to reach 1:4.5, uniformly mixing, soaking for 10min at normal temperature, and then carrying out ultrasonic treatment for 5min at 40 ℃ under the condition that the ultrasonic power is 15 KHz;
(3) distilling and extracting the treated mixed solution in the step (2) for 200min at the temperature of 60 ℃ by adopting a water vapor distillation method;
(4) adding sodium chloride powder into the mixed solution obtained in the step (3) to enable the mass concentration of the sodium chloride in the solution to reach 1.0%, and continuing distillation and extraction for 30 min;
(5) and (4) collecting distillate distilled in the step (3) and the step (4), standing, separating to obtain an upper oily liquid, adding anhydrous sodium sulfate into the upper oily liquid, shaking, and separating to remove the anhydrous sodium sulfate to obtain the sodium sulfate.
Example 2
A method for extracting alpinia zerumbet essential oil comprises the following steps:
(1) screening the dry alpinia japonica fruits, removing impurities and mildewed fruits, and then crushing and sieving by a 40-mesh sieve to obtain powder;
(2) adding water into the powder obtained in the step (1) to enable the material-liquid ratio to reach 1:7, uniformly mixing, soaking for 30min at normal temperature, and then carrying out ultrasonic treatment for 10min at 60 ℃ under the condition that the ultrasonic power is 20 KHz;
(3) distilling and extracting the treated mixed solution in the step (2) for 300min at 70 ℃ by adopting a water vapor distillation method;
(4) adding sodium chloride powder into the mixed solution obtained in the step (3) to enable the mass concentration of the sodium chloride in the solution to reach 1.6%, and continuing distillation and extraction for 60 min;
(5) and (4) collecting distillate distilled in the step (3) and the step (4), standing, separating to obtain an upper oily liquid, adding anhydrous sodium sulfate into the upper oily liquid, shaking, and separating to remove the anhydrous sodium sulfate to obtain the sodium sulfate.
Example 3
A method for extracting alpinia zerumbet essential oil comprises the following steps:
(1) screening the dry alpinia japonica fruits, removing impurities and mildewed fruits, and then crushing and sieving by a 40-mesh sieve to obtain powder;
(2) adding water into the powder obtained in the step (1) to enable the material-liquid ratio to reach 1:6, uniformly mixing, soaking for 26min at normal temperature, and then carrying out ultrasonic treatment for 7min at 50 ℃ under the condition that the ultrasonic power is 16 KHz;
(3) distilling and extracting the treated mixed solution in the step (2) for 180min at 65 ℃ by adopting a water vapor distillation method;
(4) adding sodium chloride powder into the mixed solution obtained in the step (3) to enable the mass concentration of the sodium chloride in the solution to reach 1.2%, and continuing distillation and extraction for 40 min;
(5) and (4) collecting distillate distilled in the step (3) and the step (4), standing, separating to obtain an upper oily liquid, adding anhydrous sodium sulfate into the upper oily liquid, shaking, and separating to remove the anhydrous sodium sulfate to obtain the sodium sulfate.
Comparative example 1
A method for extracting alpinia zerumbet essential oil comprises the following steps:
(1) screening the dry alpinia japonica fruits, removing impurities and mildewed fruits, and then crushing and sieving by a 200-mesh sieve to obtain powder;
(2) adding water into the powder obtained in the step (1) to enable the material-liquid ratio to reach 1:9, uniformly mixing, soaking for 26min at normal temperature, and then carrying out ultrasonic treatment for 7min at 50 ℃ under the condition that the ultrasonic power is 16 KHz;
(3) distilling and extracting the treated mixed solution in the step (2) for 180min at 65 ℃ by adopting a water vapor distillation method;
(4) adding sodium chloride powder into the mixed solution obtained in the step (3) to enable the mass concentration of the sodium chloride in the solution to reach 1.2%, and continuing distillation and extraction for 40 min;
(5) and (4) collecting distillate distilled in the step (3) and the step (4), standing, separating to obtain an upper oily liquid, adding anhydrous sodium sulfate into the upper oily liquid, shaking, and separating to remove the anhydrous sodium sulfate to obtain the sodium sulfate.
Comparative example 2
A method for extracting alpinia zerumbet essential oil comprises the following steps:
(1) screening the dry alpinia japonica fruits, removing impurities and mildewed fruits, and then crushing and sieving by a 40-mesh sieve to obtain powder;
(2) adding water into the powder obtained in the step (1) to enable the material-liquid ratio to reach 1:6, uniformly mixing, soaking for 60min at normal temperature, and then carrying out ultrasonic treatment for 15min at 50 ℃ under the condition that the ultrasonic power is 16 KHz;
(3) distilling and extracting the treated mixed solution in the step (2) for 400min at 100 ℃ by adopting a steam distillation method;
(4) adding sodium chloride powder into the mixed solution obtained in the step (3) to enable the mass concentration of the sodium chloride in the solution to reach 1.2%, and continuing distillation and extraction for 40 min;
(5) and (4) collecting distillate distilled in the step (3) and the step (4), standing, separating to obtain an upper oily liquid, adding anhydrous sodium sulfate into the upper oily liquid, shaking, and separating to remove the anhydrous sodium sulfate to obtain the sodium sulfate.
Comparative example 3
A method for extracting alpinia zerumbet essential oil comprises the following steps:
(1) screening the dry alpinia japonica fruits, removing impurities and mildewed fruits, and then crushing and sieving by a 40-mesh sieve to obtain powder;
(2) adding water into the powder obtained in the step (1) to enable the material-liquid ratio to reach 1:6, uniformly mixing, soaking for 26min at normal temperature, and then carrying out ultrasonic treatment for 7min at 50 ℃ under the condition that the ultrasonic power is 16 KHz;
(3) distilling and extracting the treated mixed solution in the step (2) for 180min at 65 ℃ by adopting a water vapor distillation method;
(4) adding sodium chloride powder into the mixed solution obtained in the step (3) to enable the mass concentration of the sodium chloride in the solution to reach 1.8%, and continuing distillation and extraction for 20 min;
(5) and (4) collecting distillate distilled in the step (3) and the step (4), standing, separating to obtain an upper oily liquid, adding anhydrous sodium sulfate into the upper oily liquid, shaking, and separating to remove the anhydrous sodium sulfate to obtain the sodium sulfate.
Comparative example 4
A method for extracting alpinia zerumbet essential oil comprises the following steps:
(1) screening the dry alpinia japonica fruits, removing impurities and mildewed fruits, and then crushing and sieving by a 40-mesh sieve to obtain powder;
(2) adding water into the powder obtained in the step (1) to enable the material-liquid ratio to reach 1:6, uniformly mixing, and soaking for 26min at normal temperature;
(3) distilling and extracting the mixed solution in the step (2) for 180min at 65 ℃ by adopting a steam distillation method;
(4) adding sodium chloride powder into the mixed solution obtained in the step (3) to enable the mass concentration of the sodium chloride in the solution to reach 1.2%, and continuing distillation and extraction for 40 min;
(5) and (4) collecting distillate distilled in the step (3) and the step (4), standing, separating to obtain an upper oily liquid, adding anhydrous sodium sulfate into the upper oily liquid, shaking, and separating to remove the anhydrous sodium sulfate to obtain the sodium sulfate.
Comparative example 5
A method for extracting alpinia zerumbet essential oil comprises the following steps:
(1) screening the dry alpinia japonica fruits, removing impurities and mildewed fruits, and then crushing and sieving by a 40-mesh sieve to obtain powder;
(2) adding water into the powder obtained in the step (1) to enable the material-liquid ratio to reach 1:6, uniformly mixing, soaking for 26min at normal temperature, and then carrying out ultrasonic treatment for 7min at 50 ℃ under the condition that the ultrasonic power is 16 KHz;
(3) distilling and extracting the treated mixed solution in the step (2) for 180min at 65 ℃ by adopting a water vapor distillation method;
(4) and (4) collecting the distillate distilled in the step (3), standing, separating to obtain an upper-layer oily liquid, adding anhydrous sodium sulfate into the upper-layer oily liquid, shaking, and separating to remove the anhydrous sodium sulfate to obtain the sodium sulfate.
Test examples
The method comprises the steps of dividing the fruits of the alpinia zerumbet into 8 parts, wherein each part is 200g in weight, extracting essential oil from the 8 parts of the fruits of the alpinia zerumbet according to the methods in examples 1-3 and comparative examples 1-5 respectively, and calculating the final yield of the essential oil and the yield rate, wherein the yield rate of the essential oil is × volume of the essential oil, the density of the essential oil is × 100 percent of the weight of the fruits of the alpinia zerumbet, and the specific results are shown in table 1.
Table 1: zingiber zerumbet fruit essential oil yield table
As can be seen from the above table, the yield of the alpinia speciosa essential oil obtained by the extraction method of examples 1-3 of the present invention is higher than that of comparative examples 1-5, and particularly, the yield of example 3 is the highest.
Compared with the method in the embodiment 3, the aperture of the crushed and sieved peltate yam rhizome fruit and the feed-liquid ratio in the soaking process are changed in the comparative example 1, and the obtaining rate of the essential oil in the two methods is compared, so that the crushed particle size and the feed-liquid ratio have certain influence on the obtaining rate of the essential oil, the loss of the essential oil is caused by the excessively small particle size, the dissolution of the essential oil is increased by the excessively large feed-liquid ratio, and the obtaining rate of the essential oil is finally reduced.
Compared with the method in example 3, the soaking time, the ultrasonic treatment time and the temperature and time of distillation extraction are changed in comparative example 2, the ultrasonic treatment process is omitted in comparative example 4, the ultrasonic treatment process damages cells and facilitates outflow of essential oil compared with the final essential oil obtaining rate, and the soaking time and the ultrasonic treatment time are too long, so that the essential oil components are decomposed and damaged.
Compared with the method in the embodiment 3, the mass concentration of sodium chloride in the subsequent solution for extraction and the extraction time under the concentration are changed in the comparative example 3, the process of adding sodium chloride into the extraction solvent is cancelled in the comparative example 5, and the addition of sodium chloride can effectively change the osmotic pressure of cells and promote the dissolution of residual essential oil in the cells, so that the yield of the essential oil is improved.
Claims (9)
1. The extraction method of the alpinia zerumbet essential oil is characterized by comprising the following steps of:
(1) pulverizing and sieving Alpinia zerumbet fruit to obtain powder;
(2) adding water into the powder obtained in the step (1), uniformly mixing, soaking for 10-30min, and then carrying out ultrasonic treatment for 5-10min at 40-60 ℃;
(3) distilling and extracting the mixed solution treated in the step (2) for 200-300min by adopting a steam distillation method;
(4) adding sodium chloride powder into the mixed solution in the step (3) to enable the mass concentration of the sodium chloride in the solution to reach 1.0-1.6%, and continuing distillation and extraction for 30-60 min;
(5) and (4) collecting distillate distilled in the step (3) and the step (4), standing, separating to obtain an upper oily liquid, adding anhydrous sodium sulfate into the upper oily liquid, shaking, and separating to remove the anhydrous sodium sulfate to obtain the sodium sulfate.
2. The method for extracting alpinia zerumbet essential oil of claim 1, wherein the soaking time in the step (2) is 25-30 min.
3. The method for extracting alpinia zerumbet essential oil of claim 1, wherein the ultrasonic temperature in the step (2) is 45-55 ℃.
4. The method for extracting alpinia zerumbet essential oil of claim 1, wherein the ultrasound time in the step (2) is 7-8 min.
5. The method for extracting alpinia speciosa essential oil as claimed in claim 1 or 3, wherein the ultrasonic treatment power in step (2) is 15-20 KHz.
6. The method for extracting alpinia zerumbet essential oil of claim 1, wherein the ratio of powder to water in the step (2) is 1: 4.5-7.
7. The method for extracting alpinia zerumbet essential oil of claim 1, wherein the temperature of distillation extraction in the steps (3) and (4) is 60-70 ℃.
8. The method for extracting alpinia zerumbet essential oil of claim 1, wherein the distillation extraction time in the step (3) is 180 min.
9. The method for extracting alpinia zerumbet essential oil of claim 1, wherein the mass concentration of sodium chloride in the solution in the step (4) is 1.2%, and the distillation extraction time is 40 min.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112592764A (en) * | 2020-11-17 | 2021-04-02 | 江苏第二师范学院（江苏省教育科学研究院） | Method for extracting majoram essential oil by salting out-steam distillation method |
| CN112773873A (en) * | 2021-03-16 | 2021-05-11 | 佰香汇生物科技（厦门）有限公司 | Natural plant extract composition capable of relieving melancholia and preparation method thereof |
| CN113355166A (en) * | 2021-06-30 | 2021-09-07 | 中国热带农业科学院热带作物品种资源研究所 | Extraction method of galangal essential oil for inhibiting listeria monocytogenes and galangal essential oil |
| CN113416608A (en) * | 2021-06-29 | 2021-09-21 | 中国热带农业科学院热带作物品种资源研究所 | Extraction method of intelligence-developing essential oil for inhibiting listeria monocytogenes and intelligence-developing essential oil |
| CN115926889A (en) * | 2022-11-23 | 2023-04-07 | 中国热带农业科学院热带作物品种资源研究所 | Essential oil extraction method for reducing content of caprylic acid in noni pomace |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112592764A (en) * | 2020-11-17 | 2021-04-02 | 江苏第二师范学院（江苏省教育科学研究院） | Method for extracting majoram essential oil by salting out-steam distillation method |
| CN112773873A (en) * | 2021-03-16 | 2021-05-11 | 佰香汇生物科技（厦门）有限公司 | Natural plant extract composition capable of relieving melancholia and preparation method thereof |
| CN113416608A (en) * | 2021-06-29 | 2021-09-21 | 中国热带农业科学院热带作物品种资源研究所 | Extraction method of intelligence-developing essential oil for inhibiting listeria monocytogenes and intelligence-developing essential oil |
| CN113355166A (en) * | 2021-06-30 | 2021-09-07 | 中国热带农业科学院热带作物品种资源研究所 | Extraction method of galangal essential oil for inhibiting listeria monocytogenes and galangal essential oil |
| CN115926889A (en) * | 2022-11-23 | 2023-04-07 | 中国热带农业科学院热带作物品种资源研究所 | Essential oil extraction method for reducing content of caprylic acid in noni pomace |
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