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Method for preparing mugwort leaf essential oil and by-products of mugwort leaf essential oil by using supercritical CO2 extraction and secondary molecular distillation process

A two-stage molecular distillation and Artemisia argyi essential oil technology, which is applied in the direction of essential oils/fragrances, fat production, etc., can solve the problems of long heating time, solvent residue, and the influence of Artemisia argyi essential oil components and odors, etc., to improve aroma and quality, and rich aroma Pure, pure-smelling full-bodied effect

Pending Publication Date: 2020-03-06
GUANGDONG GEECHING BIOMEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steam distillation method consumes a lot of energy, takes a long time to heat, the heat-sensitive components are easily destroyed, and the taste is more complicated.
However, the solvent extraction method often contains solvent residues, and the selectivity of the extraction target is insufficient, which has a certain impact on the components and odor of the essential oil of Artemisia argyi.

Method used

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  • Method for preparing mugwort leaf essential oil and by-products of mugwort leaf essential oil by using supercritical CO2 extraction and secondary molecular distillation process

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A supercritical CO 2 The method for preparing Artemisia argyi essential oil and its by-products by extraction and secondary molecular distillation process comprises the following steps:

[0040](1) The fresh Tangyinbei mugwort raw material was exposed to the sun for rapid dehydration, dried in the shade, defoliated, selected and removed, and then crushed through a 10-mesh sieve to obtain Tangyinbei mugwort leaf powder with a moisture content of 10wt%.

[0041] (2) Weigh 5kg of Tangyinbei Artemisia argyi leaf powder from step (1), and put it in 24L supercritical CO 2 In the extraction device, adjust the supercritical extraction temperature to 65°C, the extraction pressure to 25MPa, and the extraction time to 4h;

[0042] After the extraction is completed, it is separated through the separation kettle I and the separation kettle II in turn; the separation temperature of the separation kettle I is 50°C, and the separation pressure is 15MPa; the separation temperature of t...

Embodiment 2

[0049] A supercritical CO 2 The method for preparing Artemisia argyi essential oil and its by-products by extraction and secondary molecular distillation process comprises the following steps:

[0050] (1) The raw material of fresh southern mugwort wormwood was exposed to the sun for rapid dehydration, dried in the shade, defoliated, selected and removed, and then crushed through a 20-mesh sieve to obtain southern mugwort leaf powder with a moisture content of 12wt%.

[0051] (2) Weigh 6kg of the southern mugwort leaf powder from step (1) and put it in 24L supercritical CO 2 In the extraction device, the supercritical extraction temperature is 45°C, the extraction pressure is 18MPa, and the extraction time is 2h;

[0052] After the extraction is completed, it is separated through the separation kettle I and the separation kettle II in turn; the separation temperature of the separation kettle I is 35°C, and the separation pressure is 10MPa; the separation temperature of the se...

Embodiment 3

[0059] A supercritical CO 2 The method for preparing Artemisia argyi essential oil and its by-products by extraction and secondary molecular distillation process comprises the following steps:

[0060] (1) After harvesting fresh Artemisia argyi, it is quickly dehydrated by exposure to the sun, dried in the shade, defoliated, selected and removed, and crushed through a 40-mesh sieve to obtain Artemisia argyi leaf powder with a moisture content of 12wt%.

[0061] (2) Weigh 70kg of Tangyinbei Artemisia argyi leaf powder from step (1) and place in 220L supercritical CO 2 Extraction in the extraction device, the supercritical extraction temperature is 45°C, the extraction pressure is 21MPa, and the extraction time is 3h;

[0062] After the extraction is completed, it is separated through the separation tank I and the separation tank II in turn; the separation temperature of the separation tank I is 60°C, and the separation pressure is 12MPa; the separation temperature of the separ...

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Abstract

The invention discloses a method for preparing mugwort leaf essential oil and by-products of mugwort leaf essential oil by using supercritical CO2 extraction and a secondary molecular distillation process. The method comprises the following steps: (1), pretreating raw materials to obtain mugwort leaf powder; (2), carrying out supercritical extraction separation on the mugwort leaf powder to obtainmugwort leaf crude oil extract I and mugwort leaf crude oil extract II; (3), performing primary molecular distillation on the mugwort leaf crude oil extract II to obtain mugwort leaf essential oil semi-finished products and crude oil extract heavy phase; (4), carrying out refined filtration on the mugwort leaf essential oil semi-finished products to obtain a mugwort leaf essential oil finished product; and (5), mixing the mugwort leaf crude oil extract I with crude oil extract heavy phase, and performing secondary molecular distillation and separationto obtain mugwort leaf heavy oil and mugwort leaf waxy. The method can effectively protect functional components in the mugwort leaf essential oil, and the obtained mugwort leaf essential oil is purely natural, pollution-free, and pure and strong in smell. The obtained by-products of mugwort leaf heavy oil and mugwort leaf waxy can be used as raw materials to prepare cleaning, skin care products for daily use, so that utilization rate ofmugwort resources is improved.

Description

technical field [0001] The invention relates to the technical field of wormwood processing biotechnology, in particular to a method of using supercritical CO 2 A method for preparing Artemisia argyi essential oil and its by-products by extraction and secondary molecular distillation. Background technique [0002] Artemisia argyi is the dry leaf of the herb Artemisia genus Asteraceae. Artemisia argyi is warm in nature, pungent, bitter in the mouth, returns liver, spleen, kidney meridian, has the effect of dispelling cold and relieving pain, warming meridian and stopping bleeding. Ai is mainly planted in the temperate zone of the northern hemisphere, Asia, Europe, North America and other regions in the world, and it is mainly produced in Hubei, Anhui, Shandong, Hebei, Henan and other places in China. The effective chemical components of Artemisia argyi mainly include volatile oils, flavonoids, tannins, polysaccharides, eucalyptanes, trace elements, etc. The composition and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
CPCC11B9/02C11B9/025C11B9/027C11B9/022
Inventor 林泽斌黄建香李杰黄丽华邢澍祺韩惠娟
Owner GUANGDONG GEECHING BIOMEDICAL TECH CO LTD