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Method for extracting cellulose of Artemisia desertorum

A technology of cellulose and Artemisia annua, applied in the direction of pulping with organic solvents, non-woody plant/crop pulp, etc., can solve the problems of less research on the extraction and application of Artemisia artemisia cellulose, and achieve cheap, easy-to-obtain and high-purity reagents High, easy-to-operate effect

Inactive Publication Date: 2016-04-20
YULIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on Artemisia annua mainly focuses on Artemisia artemisiae seed oil and Artemisia artemisia gum, and there are few studies on the extraction and application of Artemisia artemisia cellulose

Method used

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  • Method for extracting cellulose of Artemisia desertorum

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Effect test

Embodiment 1

[0022] Clean the branches of Artemisia annua after removing impurities, first wash with tap water, then wash with distilled water two to three times, dry, crush, pass through a 60-mesh sieve, soak in distilled water with a material-to-liquid ratio of 1:10 for 24 hours (decolorization), and filter , dry at low temperature and set aside.

[0023] Weigh 3 g of the pretreated Artemisia annua powder, add a mixed solution of nitric acid with 95% ethanol as solvent, the mass fraction of nitric acid is 10%, the ratio of solid to liquid is 10 mL / g, and reflux extraction at 60 °C for 3 h. Cool, filter with suction, wash the filter cake with hot water until neutral, and dry at low temperature to obtain Artemisia cellulose. The filtrate was concentrated by a rotary evaporator and reused.

Embodiment 2

[0025] Clean the branches of Artemisia annua after removing impurities, first wash with tap water, then wash with distilled water two to three times, dry, crush, pass through a 60-mesh sieve, soak in distilled water with a material-to-liquid ratio of 1:10 for 24 hours (decolorization), and filter , dry at low temperature and set aside.

[0026] Weigh 3g of the pretreated Artemisia annua powder, add a mixed solution of nitric acid with 95% ethanol as solvent, the mass fraction of nitric acid is 25%, the ratio of solid to liquid is 20mL / g, and extract under reflux at 80°C for 5h. Cool, filter with suction, wash the filter cake with hot water until neutral, and dry at low temperature to obtain Artemisia cellulose. The filtrate was concentrated by a rotary evaporator and reused.

Embodiment 3

[0028] Clean the branches of Artemisia annua after removing impurities, first wash with tap water, then wash with distilled water two to three times, dry, crush, pass through a 60-mesh sieve, soak in distilled water with a material-to-liquid ratio of 1:10 for 24 hours (decolorization), and filter , dry at low temperature and set aside.

[0029] Weigh 3 g of pretreated Artemisia annua powder, add nitric acid mixed solution with 95% ethanol as solvent, the mass fraction of nitric acid is 40%, the ratio of solid to liquid is 30mL / g, and reflux extraction at 100°C for 7h. Cool, filter with suction, wash the filter cake with hot water until neutral, and dry at low temperature to obtain Artemisia cellulose. The filtrate was concentrated by a rotary evaporator and reused.

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Abstract

A method for extracting cellulose of Artemisia desertorum comprises steps as follows: step 1, Artemisia desertorum is cleaned after impurities are removed; step 2, the cleaned Artemisia desertorum branches are dried, crushed and sieved, and Artemisia desertorum powder is obtained; step 3, the Artemisia desertorum powder is soaked in distilled water and decolored, and the ratio of a material to a liquid is 1:10; a product is dried for standby use; step 4, a nitric acid mixed solution with 95% ethanol as a solvent is added to the decolored Artemisia desertorum powder, the mass percentage of nitric acid is 10%-40%, and the mixture is subjected to reflux extraction at the temperature of 60-100 DEG C; step 5, an extract is cooled and subjected to suction filtration, a filter cake is washed to be neutral and dried, and the cellulose of the Artemisia desertorum is obtained. The extraction method is simple, a reagent is recyclable, pollution-free and environment-friendly, and the cellulose has high yield and good purity.

Description

technical field [0001] The invention belongs to the field of cellulose extraction, and in particular relates to a method for extracting cellulose from Artemisia annua. Background technique [0002] With the increasing shortage of oil and natural gas energy, and the pollution of the natural world and the harm to human health by the products of combustion are becoming more and more serious, plant fiber, as a green and renewable resource, is one of the important topics in the study of sustainable energy development in the 21st century. one. Natural cellulose is the most abundant renewable resource in nature, inexhaustible and inexhaustible. Traditional sources of available natural cellulose are mainly wood, cotton stalks, etc. However, the limited wood resources in my country are in stark contrast to the increasing social demand, and many wood resources need to be imported. Therefore, in recent decades, Chinese experts have begun to shift their attention to herbaceous plants ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C3/20D21H11/12
CPCD21C3/20D21H11/12
Inventor 温俊峰魏雄雄刘侠王学锋刘曰涛
Owner YULIN UNIV
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