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A kind of extraction method and application of licorice polysaccharide

A technology of licorice polysaccharide and extraction method, applied in application, tobacco, preparation of tobacco and other directions, can solve the problems of reducing cigarettes, environmental pollution, insufficient utilization of licorice residues, etc., and achieves easy industrialization, simple process flow, and high value effect of chemical utilization

Inactive Publication Date: 2016-08-03
乌鲁木齐天格尔农业科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, industrial production has only extracted glycyrrhizin (also known as glycyrrhizic acid) in licorice as the main active ingredient, and the residue of licorice after extracting glycyrrhizic acid has been discarded as waste, causing environmental pollution and waste of resources.
Due to the limitation of processing technology, licorice residue has not been fully utilized in my country at present, either used for breeding feed, or directly buried back to the land as fertilizer
At present, there is no report on the preparation of functional licorice polysaccharides that can reduce the cytotoxicity of tobacco condensate (CSC) in cigarettes by using licorice residue or licorice as raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Glycyrrhiza slag is desanded and washed, dried and crushed, and passed through a 40-mesh sieve to obtain the raw material of licorice slag;

[0029] (2) Add water to 35 times the weight of the raw material of licorice residue, extract at 110°C for 5 hours, filter, separate the licorice residue to obtain an extract, and adjust the pH value of the extract to 7.0 with potassium hydroxide;

[0030] (3) Perform ultrafiltration on the extract obtained in step (2) with a membrane with a molecular weight cut-off of 5000 Daltons, and collect the cut-off liquid;

[0031] (4) Vacuum concentrate the extract to 1 / 5 of the original volume to obtain a concentrate;

[0032] (5) Add ethanol to the concentrated solution, after mixing evenly, the final concentration of ethanol is 70% (v / v), let stand at 2°C for 3 hours, filter, remove the supernatant part, and polysaccharides precipitate;

[0033] (5) The precipitate was collected and freeze-dried to obtain light yellow licorice resi...

Embodiment 2

[0035] (1) Glycyrrhiza slag is desanded and washed, dried and crushed, and passed through a 40-mesh sieve to obtain the raw material of licorice slag;

[0036] (2) Add a citric acid solution with a pH value of 2 according to 35 times the weight of the licorice residue raw material, extract at 110°C for 5 hours, filter, separate the licorice residue, and obtain an extract, and adjust the pH value of the extract to 7.0 with potassium hydroxide ;

[0037] (3) Perform ultrafiltration on the extract obtained in step (2) with a membrane with a molecular weight cut-off of 5000 Daltons, and collect the cut-off liquid;

[0038] (4) Vacuum concentrate the intercepted liquid to 1 / 5 of its original volume to obtain a concentrated liquid;

[0039] (5) Add ethanol to the concentrated solution, after mixing evenly, the final concentration of ethanol is 70% (v / v), let stand at 2°C for 3 hours, filter, remove the supernatant part, and polysaccharides precipitate;

[0040] (5) The precipitate...

Embodiment 3

[0042] (1) Glycyrrhiza slag is desanded and washed, dried and crushed, and passed through an 80-mesh sieve to obtain the raw material of licorice slag;

[0043] (2) Add a citric acid solution with a pH value of 1 according to 20 times the weight of the dry powder of licorice residue, extract at 120°C for 2 hours, filter, separate the licorice residue to obtain an extract, and adjust the pH of the extract to 6.5 with potassium hydroxide ;

[0044] (3) Perform ultrafiltration on the extract obtained in step (2) with a membrane with a molecular weight cut-off of 5000 Daltons, and collect the cut-off liquid;

[0045] (4) Vacuum concentrate the ultrafiltration permeate to 1 / 5 of the original volume to obtain a concentrate;

[0046] (5) Add ethanol to the concentrated solution, after mixing evenly, the final concentration of ethanol is 85% (v / v), let it stand at 4°C for 12 hours, filter, remove the supernatant part, polysaccharides precipitate, and use ethanol and acetone Soak 2-3...

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Abstract

The present invention disclose a method and application of a licorice polysaccharide.The present invention uses a high -temperature organic acid method to extract the combined ultrafiltration membrane treatment to prepare licorice polysaccharides.After the licorice is crushed, licorice polysaccharides are obtained through high temperature organic acid extraction, ultrafiltration, concentration and ethanol sedimentation.The weight of the licorice polysaccharides prepared by the present invention is 0.05%~ 0.2%to cigarettes. The tobacco condensation obtained by cigarettes is significantly higher than the blank samples on the survival rate of human bronchial epithelium BEAS‑2B cells, which has a positive effect.

Description

technical field [0001] The invention relates to the deep processing technology of licorice residue, in particular to the extraction method and application of licorice polysaccharide. Background technique [0002] With the continuous improvement of people's living standards and quality of life, cigarette consumption has shifted to brand consumption, especially in the high-end cigarette market. Consumers have higher and higher requirements for the health and flavor of cigarettes. The production of low-tar and low-harm cigarettes has become one of the important directions for the development of the cigarette industry in my country and even in the world. At present, there are two main technical routes to reduce the harm of cigarettes: one is "tar reduction", that is, the harmful components are reduced at the same time by reducing the release of cigarette tar, that is, the synergistic reduction of harmful components in cigarette smoke; the other is "Harm reduction" refers to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00A24B3/12A24B3/14
Inventor 田英姿赵谋明崔春英犁王希军
Owner 乌鲁木齐天格尔农业科技开发有限公司
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