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Method for extracting wormwood essential oil by using deep congruent melting solvent

A technology of deep eutectic solvent and wormwood essential oil, which is applied in the direction of essential oil/fragrance, fat production, etc., can solve the problems of high industrial equipment requirements, difficulty in large-scale commercial use, and long extraction time of the extraction method, and achieve rich components, Effect of changing permeability and high extraction efficiency

Inactive Publication Date: 2019-07-05
TOBACCO RES INST CHIN AGRI SCI ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, supercritical CO 2 The extraction method has high requirements on industrial equipment, high cost, and is difficult to commercialize on a large scale; the extraction time required by the steam extraction method and microwave extraction method is long and the extraction rate is low

Method used

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  • Method for extracting wormwood essential oil by using deep congruent melting solvent
  • Method for extracting wormwood essential oil by using deep congruent melting solvent
  • Method for extracting wormwood essential oil by using deep congruent melting solvent

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preparation example Construction

[0023] The raw materials for the preparation of the deep eutectic solvent include choline chloride, glycerin and water.

[0024] In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.

[0025] In the present invention, the molar ratio of the choline chloride to glycerol is preferably 1:(1.8-2.2), more preferably 1:(1.9-2.1), most preferably 1:2.0; the choline chloride The volume ratio of the total volume of glycerol to water is preferably (6-8):(2-4), more preferably (6.5-7.5):(2.5-3.5), most preferably 7:3.

[0026] In the present invention, the preparation method of the deep eutectic solvent preferably comprises the following steps:

[0027] A mixture of choline chloride and glycerol was mixed with water under stirring to obtain a deep eutectic solvent.

[0028] In the present invention, the preparation method of the mixture of the choline chloride and glycerin is prefera...

Embodiment 1

[0037] Dry the dried leaves of wormwood at 40°C until the quality is constant, and crush them through a 60-mesh sieve to obtain wormwood powder (stored at 4°C);

[0038] Mix 140g (1mol) choline chloride with 184g (2mol) glycerin, stir (85°C, 300rpm) to a colorless transparent liquid; under the above stirring conditions, mix the colorless transparent liquid with water at a volume ratio of 7:3 Mix to obtain a deep eutectic solvent;

[0039] Mix 40g of wormwood powder with 800mL of deep eutectic solvent, distill for 5h under slightly boiling conditions, dry the obtained fraction with anhydrous sodium sulfate, and filter to obtain wormwood essential oil (stored at 4°C).

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Abstract

The invention relates to the technical field of essential oil extraction, in particular to a method for extracting wormwood essential oil. The method comprises the following steps that wormwood is mixed with a deep congruent melting solvent for extraction to obtain the wormwood essential oil; the deep congruent melting solvent is prepared from choline chloride, glycerinum and water. The deep congruent melting solvent is more conductive to changing the permeability of the cell wall or cell membrane, so that the content of the wormwood cells permeat more easily, thereby improving the extractionefficiency of the wormwood essential oil. The method for extracting the wormwood essential oil has the advantages that the method has high extraction efficiency and short time, and the components of the extracted wormwood essential oil are more abundant.

Description

technical field [0001] The invention relates to the technical field of essential oil extraction, in particular to a method for extracting wormwood essential oil by using a deep eutectic solvent. Background technique [0002] Wormwood, also known as mugwort, is a perennial herb of Compositae, born on roadsides and saline-alkali lands; it is widely distributed, has a unique flavor, and is suitable for both medicine and food. The main chemical components are flavonoids, polysaccharides and essential oils; the essential oils have antibacterial, The characteristics of anti-oxidation function, the main components are terpene compounds such as eucalyptol, camphor, borneol, limonene, etc. [0003] At present, the methods for extracting wormwood essential oil include steam extraction, microwave extraction and supercritical CO 2 extraction method. Among them, supercritical CO 2 The extraction method has high requirements on industrial equipment, high cost, and is difficult to be co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
CPCC11B9/025
Inventor 付秋娟谭家能孙婷婷荆常亮谢胜男
Owner TOBACCO RES INST CHIN AGRI SCI ACAD
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