Method for low temperature extraction of volatile fragrance components of natural plants

A technology of fragrance components and natural plants, applied in the directions of essential oils/spices, fat production, etc., can solve the problems of limited application scope of natural plant extracts and limited application of natural plants, and achieve the effect of strong adaptability

Inactive Publication Date: 2013-11-13
CHINA TOBACCO FUJIAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many treatment methods add toxic reagents in order to obtain some of the active ingredients. It is difficult to remove these toxic reagents in the subsequent treatment process, so that the application range of natural plant extracts is relatively limited.
[0004] At present, there is no effective extraction method of natural plants under low temperature and normal pressure at home and abroad, which greatly restricts the application of natural plants (Chinese herbal medicine)

Method used

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  • Method for low temperature extraction of volatile fragrance components of natural plants
  • Method for low temperature extraction of volatile fragrance components of natural plants
  • Method for low temperature extraction of volatile fragrance components of natural plants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1. First, 20 g of tea leaves to be extracted and 100 g of methyl bromide (CH3Br) were put into the material bottle 3 and sealed, cooled to a low temperature of -10°C, and extracted at low temperature for 12 hours to obtain an extract. Then the extracted material bottle 3 is taken out from the cooling box 1, and the pipeline 8 is connected. The extract evaporates rapidly at normal temperature, and passes through three trapping bottles 6 connected in series successively. The trapping liquid of the three trapping bottles 6 is pure water. The extracted active ingredients of the tea leaves are absorbed by the trapping liquid 5 . Methyl bromide (CH3Br)4 is finally recovered to the fully cooled recovery bottle 7 for recycling. The recovery liquid in the low-temperature extractant recovery bottle 4 is a mixture of ethanol, ether, and carbon disulfide, and the mixing ratio of ethanol, ether, and carbon disulfide is 60:25:15.

Embodiment 2

[0023] Example 2, firstly put 15g of loquat leaf powder and 80g of methyl bromide (CH3Br) into the material bottle 3 and seal it, cool to a low temperature of -5°C, and extract at low temperature for 11 hours to obtain an extract. Then the extracted material bottle 3 is connected to the pipeline 8, taken out from the cooling box 1, the extract evaporates rapidly at normal temperature, and passes through three trapping bottles 6 in series successively, and the trapping liquid of the three trapping bottles 6 is pure water. The extracted active ingredients of the loquat leaves are absorbed by the trapping solution 5 . Methyl bromide (CH3Br)4 is finally recovered to the fully cooled recovery bottle 7 for recycling. The recovery liquid in the cryogenic extractant recovery bottle 4 is ethanol.

Embodiment 3

[0024] Example 3: First, 35 g of ginkgo leaf powder and 150 g of low-temperature extractant methyl bromide (CH3Br) were put into the material bottle 3 and tightly capped, cooled to -6°C, and extracted under low-temperature extraction for 14 hours to obtain an extract. Then the extracted material bottle 3 is taken out from the cooling box 1, and the pipeline 8 is connected. The extract evaporates rapidly at normal temperature, and passes through four trapping bottles in series successively. The trapping liquid of the four trapping bottles 6 is water. or pure water. The extracted active ingredients of ginkgo biloba are absorbed by the trapping solution 5 . Methyl bromide (CH3Br)4 is finally recovered to the fully cooled recovery bottle 7 for recycling. The recovery solution in the low-temperature extraction agent recovery bottle 4 is a mixture of ethanol and ether, and the mixing ratio of ethanol and ether is 80:20.

[0025] Embodiment 1 of the present invention differs from E...

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Abstract

The invention discloses a method for low temperature extraction of volatile fragrance components of natural plants. The method comprises: a sample to be extracted is weighed, and the sample together with a low temperature extraction agent is filled into a material bottle to seal, and is extracted at a low temperature and the normal pressure to obtain a extraction liquid; then the extraction liquid is volatilized at the room temperature and the normal pressure, and the fragrance components are absorbed by capture liquids in multistage capture bottles, the low temperature extraction agent is finally recovered into a low temperature cooling extraction liquid recovery bottle connected with a final stage capture bottle. Through use of the method, the defects of high temperature, high pressure, residue of used toxic solvents and the like in treatment methods in the prior art are overcome, extraction can be carried out at the room temperature and the normal pressure, the type and the content of the sample can be retained unchanged, and the method has the advantages of simple method, fidelity of results, easy operation, safety and environmental friendliness and the like.

Description

technical field [0001] The invention relates to a method for extracting volatile aroma components of natural plants at low temperature. Background technique [0002] The use of natural plants is becoming more and more widely used in the fields of medicine, food, flavors and fragrances, perfumes, etc., but the extraction method of its active ingredients has always been a difficult point for scientific researchers. Traditional extraction and purification methods include decoction method, maceration method, percolation method, reflux method, etc. These methods generally have low extraction rate of active ingredients, low removal rate of impurities, long production cycle, high energy consumption, large amount of solvent, etc. Disadvantages: Modern Chinese herbal medicine extraction and purification technologies include semi-bionic extraction (SBE), supercritical fluid extraction, ultrasonic extraction, macroporous adsorption resin separation technology, ultrafiltration technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/00
Inventor 林凯鹿洪亮马鹏飞
Owner CHINA TOBACCO FUJIAN IND
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