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Extraction method of polysaccharide from winter jujub

A technology for polysaccharide extraction and winter jujube, applied in chemical recovery and other directions, can solve the problems of limiting polysaccharide separation, purification, incomplete extraction and high energy consumption, and achieve the effects of low product cost, sufficient raw materials and low energy consumption.

Inactive Publication Date: 2008-12-24
TIANJIN AGRICULTURE COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Extraction with hot water requires high energy consumption, incomplete extraction, and can only obtain a mixture of rough polysaccharides with low purity, which greatly limits the separation and purification of polysaccharides, as well as the determination of chemical properties, chemical structures and physiological functions. Analysis and actual utilization efficiency

Method used

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  • Extraction method of polysaccharide from winter jujub
  • Extraction method of polysaccharide from winter jujub

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Crush fresh winter jujube, squeeze the juice, take 100g of jujube dregs, dry and pulverize, add 400ml of distilled water at 25°C for extraction, extract for 4 hours, and filter to obtain the filtrate and residue, repeat the extraction 4 times, concentrate the filtrate and combine it into 1 / 1 of the original volume 4. Precipitate and filter with ethanol with a volume ratio of 5 times (volume fraction is 80%), recover the precipitate, and obtain cold water-soluble polysaccharides and residues; add the residues to 90° C. 4 times the weight of distilled water for extraction, leaching for 2 hours, and filter. Obtain the filtrate and residue, repeat the extraction 4 times, concentrate the filtrate and merge it into 1 / 4 of the original volume, and use ethanol (volume fraction 80%) with a volume ratio of 5 times to carry out precipitation recovery to obtain hot water soluble polysaccharide and residue; Add 4 times the weight of the residue, extract in 0.05M hydrochloric acid sol...

Embodiment 2

[0030] Take dried winter jujube, crush and squeeze the juice, take 100g of jujube dregs, dry and pulverize, add 200ml of distilled water at 4°C, extract for 6 hours, filter to obtain the filtrate and residue, repeat the extraction 8 times, concentrate the filtrate and combine it into 1 / 6 of the original volume , use ethanol (volume fraction 90%) with a volume ratio of 2 times to precipitate, filter, and recover the precipitate to obtain cold water-soluble polysaccharides and residues; add the residues to distilled water with 2 times the weight of 100°C, extract for 6 hours, and filter to obtain the filtrate and the residue, repeated extraction 8 times, the filtrate was concentrated and combined into 1 / 6 of the original volume, and the ethanol (volume fraction was 90%) with a volume ratio of 2 times was used for precipitation and recovery, filtered to obtain hot water soluble polysaccharides and residues; Add 2 times the weight of the residue, extract in 0.01M hydrochloric acid ...

Embodiment 3

[0032] Take fresh winter jujube, crush and squeeze the juice, take 100g of jujube dregs, dry and crush, add 500ml of distilled water at 15°C, extract for 2 hours, filter to obtain the filtrate and residue, repeat the extraction twice, concentrate the filtrate and combine it into 1 / 6 of the original volume , Precipitate with ethanol (60% by volume) with a volume ratio of 2 times, filter, and recover the precipitate to obtain cold water-soluble polysaccharides and residues; add the residues to 5 times the weight of distilled water at 70°C, extract for 2 hours, and filter to obtain the filtrate and residue, repeated extraction twice, concentrating and merging the filtrate into 1 / 6 of the original volume, using ethanol (volume fraction 60%) with a volume ratio of 2 times for precipitation recovery, filtering to obtain hot water soluble crude polysaccharide and residue; Add the residue to 5 times the weight, extract in 1.00M calcium hydroxide solution (70°C), extract for 2 hours, fi...

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Abstract

The invention discloses a jujube polysaccharide extracting method, which comprises the following steps: first, disintegrating the jujube; extracting juice to generate jujube residual; leaching the extractor and residual in the cold water; condensing the extractor to deposit and recycle the polysaccharide. The invention saves energy, which simplifies extracting technology and utility rate.

Description

technical field [0001] The invention relates to a method for extracting polysaccharides, in particular to a method for extracting polysaccharides from winter jujube. Background technique [0002] Dongzao has a long history of cultivation and utilization in my country, and has always been regarded as a classic sample of the same origin of medicine and food. In the "Compendium of Materia Medica" written by Li Shizhen in the Ming Dynasty, "Jujube tastes sweet and non-toxic, governs evil spirits, calms the spleen and nourishes the spleen, calms stomach qi, clears the nine orifices, helps the twelve meridians, nourishes little qi, long-term use lightens the body and prolongs life." records. At the same time, due to its unique flavor, it has been planted on a large scale in my country in recent years. Its production areas are mainly distributed in Dagang and Jinghai in Tianjin, Cangzhou, Huanghua, Hengshui in Hebei Province, and Binzhou, Dezhou, Liaocheng, Dongying in Shandong Pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00
CPCY02P20/582
Inventor 刘金福张平平李托平
Owner TIANJIN AGRICULTURE COLLEGE
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