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Method for extracting red date polysaccharide from red dates

A jujube polysaccharide and jujube technology, which is applied in the production of bulk chemicals and can solve the problems of low polysaccharide purity and low extraction efficiency

Inactive Publication Date: 2021-04-20
TARIM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the extraction methods of jujube polysaccharides include: hot water extraction, lye extraction, enzyme extraction, microwave-assisted extraction, and ultrasonic-assisted extraction. Extraction of jujube polysaccharides is not only low in extraction efficiency, but also most importantly due to the rich Contains protein, resulting in low polysaccharide purity, so it is necessary to improve the above defects and design an extraction method with high polysaccharide purity and mild working conditions

Method used

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  • Method for extracting red date polysaccharide from red dates
  • Method for extracting red date polysaccharide from red dates
  • Method for extracting red date polysaccharide from red dates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for extracting jujube polysaccharide from jujube, comprising the steps of:

[0032] (1) Alcohol extraction of active ingredients of jujube:

[0033] Wash, dry and pulverize the jujube, add 75wt% ethanol solution to prepare a slurry with a concentration of 1mg / L, heat it in a microwave at 100W for 5min, cool to room temperature, and concentrate under reduced pressure to obtain an extract;

[0034] (2) Jujube polysaccharide extracted by natural clarifying agent:

[0035] Natural clarifier A component: dissolve ZTC1+1 natural clarifier in distilled water to make 1wt% solution A;

[0036] Natural clarifying agent B component: dissolving ZTC1+1 natural clarifying agent in 1wt% glacial acetic acid solution to make 1wt% solution B;

[0037] Dissolve the extract in step (1) in water to make a 1wt% solution, add solution B at 80°C in a volume ratio of 100:4, stir once every 30 minutes, add solution A in a volume ratio of 100:5 after 1 hour, Stir once every 40 minutes...

Embodiment 2

[0045] A method for extracting jujube polysaccharide from jujube, comprising the steps of:

[0046] (1) Alcohol extraction of active ingredients of jujube:

[0047] Wash, dry and pulverize the jujube, add 85wt% ethanol solution to prepare a slurry with a concentration of 0.75mg / L, heat it in a microwave at 200W for 4min, cool to room temperature, and concentrate under reduced pressure to obtain an extract;

[0048] (2) Jujube polysaccharide extracted by natural clarifying agent:

[0049] Natural clarifier A component: dissolve ZTC1+1 natural clarifier in distilled water to make 1wt% solution A;

[0050] Natural clarifying agent B component: dissolving ZTC1+1 natural clarifying agent in 1wt% glacial acetic acid solution to make 1wt% solution B;

[0051] Dissolve the extract of step (1) in water to make a 1.5wt% solution, and at 65°C, add solution B at a volume ratio of 100:5, stir once every 35 minutes, and add the solution at a volume ratio of 100:4 after 1.5 hours A, stir ...

Embodiment 3

[0059] A method for extracting jujube polysaccharide from jujube, comprising the steps of:

[0060] (1) Alcohol extraction of active ingredients of jujube:

[0061] Wash, dry and pulverize the jujube, add 95wt% ethanol solution to prepare a slurry with a concentration of 0.5 mg / L, heat in microwave at 300W for 3 minutes, cool to room temperature, concentrate under reduced pressure, and obtain an extract;

[0062] (2) Jujube polysaccharide extracted by natural clarifying agent:

[0063] Natural clarifier A component: the clarifier KBT-ZTC is dissolved in distilled water to make 1wt% solution A;

[0064] Component B of natural clarifier: dissolve clarifier KBT-ZTC in 1wt% glacial acetic acid solution to make 1wt% solution B;

[0065] Dissolve the extract of step (1) in water to make a 2wt% solution, add solution B at a volume ratio of 100:6 at 55°C, stir once every 40 minutes, and add solution A at a volume ratio of 100:3 after 2 hours, Stir once every 60 minutes, take it out...

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Abstract

The invention relates to the technical field of plant extraction and analysis, in particular to a method for extracting red date polysaccharide from red dates. The method comprises enzyme treatment, extraction of red date polysaccharide, aqueous two-phase extraction, and supercritical CO2 extraction. The method overcomes the technical defects of low extraction efficiency and low polysaccharide purity in the process of extracting the red date polysaccharide by using a hot water extraction method, an alkali liquor extraction method, an enzyme extraction method, a microwave-assisted extraction method and an ultrasonic-assisted extraction method in the prior art. The red date polysaccharide is extracted and purified by adopting a process flow from microwave alcohol extraction, extraction of the red date polysaccharide with a natural clarifying agent, high-performance counter-current chromatographic separation and supercritical CO2 extraction, so the obtained red date polysaccharide extract has high extraction efficiency and high purity.

Description

technical field [0001] The invention relates to the technical field of plant extraction and analysis, in particular to a method for extracting jujube polysaccharides from jujubes. Background technique [0002] Jujube is rich in polysaccharides, and jujube polysaccharide is an important biologically active substance in jujube, which has various physiological activities and has a strong market demand. Compared with other common polysaccharides on the market such as edible fungus polysaccharides, wolfberry polysaccharides, and spirulina polysaccharides, its raw materials are easy to obtain, low in development costs, natural and pollution-free, and have strong market competitiveness. [0003] Lin Qinbao et al. separated and purified the polysaccharides in jujube by column chromatography, and obtained two kinds of polysaccharides: neutral polysaccharide (JDP-N) and acidic polysaccharide (JDP-A), and determined the polysaccharide content of jujube polysaccharide by high performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00
CPCY02P20/54
Inventor 白冰瑶宋丽军张丽张春兰侯旭杰程敏
Owner TARIM UNIV