Carbon dioxide extraction method of garlic essential oil

A technology of garlic essential oil and carbon dioxide, which is applied in the direction of essential oil/spice, fat production, etc., can solve the problems of low extraction rate, influence of active ingredients, waste, etc., and achieve the effect of improving extraction rate and benefiting industrial production

Inactive Publication Date: 2018-02-09

徐州光明生物科技有限公司

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AI-Extracted Technical Summary

Problems solved by technology

According to the research, the content of alliin in the head, stem and leaf of garlic is 1.17%, 0.41% and 0.13% respectively. However, in the current harvesting method of garlic, only the head part of garlic is used. The remaining garlic stems after harvesting are mostly directly buried or burned on the spot. During the burning process, the alliin contained in the garlic stems is easily cracked into sulfide, which not only pollutes the environment, but is...

Method used

[0034] In addition, the mixed garlic pulp residue obtained after separating the mixed garlic pulp extract in the above step 4) is dried and pressed into garlic cakes. After the finished garlic cake is completely dried, it can be stored easily and will not become moldy. It can be used for raising poultry, lives...

Abstract

The invention discloses a carbon dioxide extraction method of garlic essential oil. The method comprises the following steps that garlic heads and garlic stems of garlics are respectively crushed andbeaten into a paste shape; then, mixing is performed to form mixed garlic paste; the characteristic that the self specific garlic ammonia enzyme of the garlics can oxidize the garlic paste into allicin under the aerobic condition is utilized, so that the mixed garlic paste is subjected to fermentation treatment so as to improve the content of effective ingredients in the garlic essential oil; then, an extracting agent is used for extracting and filtering the fermented garlic paste; filter liquid is subjected to carbon dioxide extraction and grading pressure reduction separation; the finished product of the garlic essential oil is finally obtained. In addition, the principle that ice points are different is utilized, so that the water and the extracting agent in residual juice of the mixedgarlic paste extracting liquid after the extraction are sequentially removed, so that the garlic essential oil is obtained again. When the carbon dioxide extraction method of the garlic essential oilprovided by the invention is used for extracting the garlic essential oil, the extraction rate of the garlic essential oil is effectively improved; meanwhile, the effective ingredients of the target product are reserved to the greatest degree; the industrial production is facilitated.

Application Domain

Essential-oils/perfumes

Technology Topic

ChemistryCarbon dioxide +9

Examples

Experimental program(3)

Example Embodiment

[0024] Example 1:

[0025] Embodiment 1 of the present invention discloses a carbon dioxide extraction method of garlic essential oil, which includes the following steps:

[0026] 1) A garlic stalk is selected, and after cleaning the garlic stalk, it is pulverized with a pulverizer, and the smashed garlic stalk is further beaten into a slurry to prepare a garlic stalk slurry. , Use a pulverizer to pulverize the mold-free garlic heads, and further beat the pulverized garlic heads into a slurry;

[0027] 2) Mix the garlic head pulp and garlic stem pulp at a mass ratio of 1:1 to obtain mixed garlic pulp;

[0028] 3) Put the mixed garlic slurry in an aerobic environment for continuous fermentation at 30° for 6 hours to prepare a fermented mixed garlic slurry;

[0029] 4) Extract the above-mentioned fermented mixed garlic pulp with 75% ethanol at 30°C for 8 hours, and filter after the end of the extraction to obtain a mixed garlic pulp extract, wherein the mass ratio of fermented garlic paste to extractant is 3 :2;

[0030] 5) Pump the mixed garlic slurry extract into a carbon dioxide extraction kettle for extraction, the extraction pressure is 25MPa, the extraction temperature is 32°C, the extraction time is 2.5h, and the carbon dioxide flow is 3200g/h;

[0031] 6) Carry out fractional decompression separation, the pressure is 6MPa, the temperature is 32℃, and the garlic essential oil is finally separated;

[0032] 7) Using the principle of different freezing points, the residual juice of the mixed garlic pulp extract after extraction in step 5) is first refrigerated at a temperature lower than the freezing point of water, so that the water contained in the residual juice freezes into ice cubes , And remove the ice to obtain a 75% ethanol and garlic essential oil mixture;

[0033] Then the 75% ethanol and garlic essential oil mixture is refrigerated at a temperature lower than the freezing point of the garlic essential oil, so that the garlic essential oil contained in the 75% ethanol and garlic essential oil mixture freezes into ice. And filter out 75% ethanol to obtain garlic essential oil ice cubes; finally, return the temperature to above zero to make the garlic essential oil ice cubes thaw to form liquid garlic oil.

[0034] In addition, the mixed garlic pulp residue obtained after separating the mixed garlic pulp extract in the above step 4) is dried and pressed into a garlic cake. After the garlic cake is completely dried, it can be easily stored without mold. It can be used for poultry, livestock and fish breeding. The garlic cake can be mixed with other animal feed after cooking or crushing. Feeding can increase the immunity of animals and increase the weight of animals, which can be turned into treasures to achieve the purpose of making full use of resources.

[0035] The extraction rate of garlic essential oil can be as high as 75% by the carbon dioxide extraction method described in the specific example 1.

Example Embodiment

[0036] Example 2:

[0037] Embodiment 2 of the present invention discloses a carbon dioxide extraction method of garlic essential oil, which includes the following steps:

[0038] 1) A garlic stalk is selected, and after washing the garlic stalk, it is pulverized with a pulverizer, and the smashed garlic stalk is further beaten into a slurry to prepare a garlic stalk slurry, which is screened out without insects , Use a pulverizer to pulverize the mold-free garlic heads, and further beat the pulverized garlic heads into a slurry;

[0039] 2) Mix the garlic head pulp and garlic stem pulp at a mass ratio of 2:1 to obtain mixed garlic pulp;

[0040] 3) Put the mixed garlic slurry in an aerobic environment for continuous fermentation at 35° for 7 hours to prepare a fermented mixed garlic slurry;

[0041] 4) Extract the above-mentioned fermented mixed garlic pulp with 75% ethanol at 32°C for 9 hours, and filter after the extraction to obtain a mixed garlic pulp extract, wherein the mass ratio of fermented garlic paste to extractant is 3 :2;

[0042] 5) Pump the mixed garlic slurry extract into a carbon dioxide extraction kettle for extraction, the extraction pressure is 25MPa, the extraction temperature is 35°C, the extraction time is 2.5h, and the carbon dioxide flow is 3200g/h;

[0043] 6) Carry out fractionation and decompression separation, the pressure is 7MPa, the temperature is 32℃, and the garlic essential oil is finally separated;

[0044] 7) Using the principle of different freezing points, the residual juice of the mixed garlic pulp extract after extraction in step 5) is first refrigerated at a temperature lower than the freezing point of water, so that the water contained in the residual juice freezes into ice cubes , And remove the ice to obtain a 75% ethanol and garlic essential oil mixture;

[0045] Then the 75% ethanol and garlic essential oil mixture is refrigerated at a temperature lower than the freezing point of the garlic essential oil, so that the garlic essential oil contained in the 75% ethanol and garlic essential oil mixture freezes into ice. And filter out 75% ethanol to obtain garlic essential oil ice cubes; finally, return the temperature to above zero to make the garlic essential oil ice cubes thaw to form liquid garlic oil.

[0046] In addition, the mixed garlic pulp residue obtained after separating the mixed garlic pulp extract in the above step 4) can also be used, that is, it is dried and pressed into garlic cake, which is used for the animal breeding described in Example 1. .

[0047] The extraction rate of garlic essential oil can be as high as 85% by the carbon dioxide extraction method described in the specific embodiment 2.

Example Embodiment

[0048] Example 3:

[0049] Embodiment 3 of the present invention discloses a carbon dioxide extraction method of garlic essential oil, which includes the following steps:

[0050] 2) A garlic stalk is selected, and after cleaning the garlic stalk, it is pulverized with a pulverizer, and the smashed garlic stalk is further beaten into a slurry to prepare a garlic stalk slurry, which is screened out without insects , Use a pulverizer to pulverize the mold-free garlic heads, and further beat the pulverized garlic heads into a slurry;

[0051] 2) Mix the garlic head pulp and garlic stem pulp at a mass ratio of 3.5:1 to obtain mixed garlic pulp;

[0052] 3) Put the mixed garlic slurry in an aerobic environment for continuous fermentation at 40° for 8 hours to prepare a fermented mixed garlic slurry;

[0053] 4) Extract the above-mentioned fermented mixed garlic pulp with 75% ethanol at 35°C for 10 hours, and filter after the extraction to obtain a mixed garlic pulp extract, wherein the mass ratio of fermented garlic paste to extractant is 3 :2;

[0054] 5) Pump the mixed garlic slurry extract into a carbon dioxide extraction kettle for extraction, the extraction pressure is 30MPa, the extraction temperature is 40°C, the extraction time is 3h, and the carbon dioxide flow rate is 3500g/h;

[0055] 6) Carry out fractionation and decompression separation, the pressure is 8MPa, the temperature is 35℃, and the garlic essential oil is finally separated;

[0056] 7) Using the principle of different freezing points, the residual juice of the mixed garlic pulp extract after extraction in step 5) is first refrigerated at a temperature lower than the freezing point of water, so that the water contained in the residual juice freezes into ice cubes , And remove the ice to obtain a 75% ethanol and garlic essential oil mixture;

[0057] Then the 75% ethanol and garlic essential oil mixture is refrigerated at a temperature lower than the freezing point of the garlic essential oil, so that the garlic essential oil contained in the 75% ethanol and garlic essential oil mixture freezes into ice. And filter out 75% ethanol to obtain garlic essential oil ice cubes; finally, return to above zero to make garlic essential oil ice cubes thawed to form liquid garlic oil.

[0058] In addition, the mixed garlic pulp residue obtained after separating the mixed garlic pulp extract in the above step 4) can also be used, that is, it is dried and pressed into garlic cake, which is used for the animal breeding described in Example 1. .

[0059] The extraction rate of garlic essential oil can be as high as 95% by the carbon dioxide extraction method described in the specific example 3.

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Classification and recommendation of technical efficacy words

High extraction rate
conducive to industrial production

Carbon dioxide extraction method of garlic essential oil

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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