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Method for extracting volatile oil from Artemisia scoparia

A technology of volatile oil and Artemisia annua, applied in the direction of fat oil/fat production, fat production, etc., can solve the problems of low extraction efficiency, high solvent loss, and large solvent residue in the extraction process, so as to reduce costs, improve dissolution rate, and good yield rate effect

Inactive Publication Date: 2020-01-24
张少清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are few studies on the extraction of volatile oil from Artemisia annua seeds, but the existing extraction process has problems such as low extraction efficiency, complicated steps, high solvent loss, and many solvent residues in the product.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The method for extracting volatile oil from a kind of Artemisia annua of the present embodiment comprises the following steps:

[0030] (1) Wash the Artemisia annua seeds, dry them at a temperature of 60°C, crush them to a particle size of 50 mesh, and place them at a temperature of -6°C for 16 hours;

[0031] (2) Take out Artemisia annua and add it to petroleum ether, the mass ratio of Artemisia annua to petroleum ether is 0.3:1, and extract by heating under ultrasonic conditions, the ultrasonic power is 200W, the ultrasonic time is 60min, and the heating temperature is 50°C , the extraction time is 6h to obtain filtrate A and filter residue A;

[0032] (3) Dry the filter residue A, crush it to 50-60 mesh, add cellulase and deionized water, the activity of cellulase is 1 million u / g, and the mass ratio of filter residue A to deionized water is 2:50, the concentration of cellulase in water is 0.12g / L, the temperature is raised to 28°C for immersion and enzymatic hydrol...

Embodiment 2

[0036] The method for extracting volatile oil from a kind of Artemisia annua of the present embodiment comprises the following steps:

[0037] (1) Wash the Artemisia annua seeds, dry them at a temperature of 65°C, crush them to a particle size of 55 mesh, and place them at a temperature of -4°C for 17 hours;

[0038] (2) Take out Artemisia annua and add it to petroleum ether. The mass ratio of Artemisia annua to petroleum ether is 0.4:1. Extract by heating under ultrasonic conditions. The ultrasonic power is 220W, the ultrasonic time is 55min, and the heating temperature is 55°C. , the extraction time is 4.5h to obtain filtrate A and filter residue A;

[0039] (3) Dry the filter residue A, crush it to 50-60 mesh, add cellulase and deionized water, the activity of cellulase is 1.05 million u / g, and the mass ratio of filter residue A to deionized water is 3:60, the concentration of cellulase in water is 0.135g / L, the temperature is raised to 29°C for immersion and enzymatic hyd...

Embodiment 3

[0043] The method for extracting volatile oil from a kind of Artemisia annua of the present embodiment comprises the following steps:

[0044] (1) Wash the Artemisia annua seeds, dry them at a temperature of 70°C, crush them to a particle size of 60 mesh, and place them at a temperature of -2°C for 18 hours;

[0045] (2) Take out Artemisia annua and add it to petroleum ether, the mass ratio of Artemisia annua to petroleum ether is 0.5:1, and extract by heating under ultrasonic conditions, the ultrasonic power is 240W, the ultrasonic time is 50min, and the heating temperature is 60°C , the extraction time is 3h to obtain filtrate A and filter residue A;

[0046] (3) Dry the filter residue A, crush it to 50-60 mesh, add cellulase and deionized water, the activity of cellulase is 1.1 million u / g, and the mass ratio of filter residue A to deionized water is 4:70, the concentration of cellulase in water is 0.15g / L, the temperature is raised to 30°C for immersion and enzymatic hydr...

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Abstract

The invention relates to a method for extracting volatile oil from Artemisia scoparia. The method comprises the following steps: (1) cleaning, drying and crushing Artemisia scoparia seeds; (2) takingout the Artemisia scoparia seeds, adding the seeds into petroleum ether, and performing heating for extraction under an ultrasonic condition so as to obtain a filtrate A and a filter residue A; (3) drying and crushing the filter residue A, adding cellulase and deionized water, carrying out heating for soaking and enzymolysis, and then adding petroleum ether for extraction to obtain a filtrate B and a filter residue B; (4) adding ethanol into the filter residue B as an entrainer for carbon dioxide supercritical extraction so as to obtain an extract; and (5) mixing the extract with the filtrateA, carrying out standing, performing precipitating to remove impurities, carrying out concentrating, and performing crystallizing with ethanol 4-6 times to obtain the volatile oil. According to the method disclosed by the invention, ultrasonic extraction and supercritical extraction are sequentially carried out by using different solvents, so the volatile oil in Artemisia scoparia can be fully extracted, and extraction efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of extracting active ingredients of plant medicines, and in particular relates to a method for extracting volatile oil from Artemisia annua. Background technique [0002] Artemisia scoparia (scientific name: Artemisia scoparia, Latin scientific name: Artemisia scoparia waldst.et Kit) is a perennial herb or nearly one or two-year herb with a special smell. Stem erect, 40-90 cm tall, medium forage plant. Artemisia annua belongs to the temperate xeric or middle xeric herb, which is resistant to drought and cold, and grows well on mildly salinized soil. Artemisia annua can be used for fumigation and curing of tobacco, improving the quality of tobacco, and also has the functions of windproof, sand-fixing, and preservation. Water and soil, improving the ecological environment and so on. [0003] At present, there are few studies on the extraction of volatile oil from Artemisia annua seeds, but the existing extra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/10
CPCC11B1/04C11B1/10C11B1/106C11B1/104
Inventor 张少清
Owner 张少清