Method for extracting polysaccharide from jujube

A technology of jujube polysaccharides and jujube, which is applied in the field of natural product extraction, can solve the problems of no polysaccharide extraction, and achieve the effects of low cost, simple operation, and increased polysaccharide content

Inactive Publication Date: 2008-03-12
NORTHWEST UNIV(CN)
View PDF0 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most reports mainly use traditional extraction and separation methods to extract and isolate polysaccharides from jujube, or extract polysaccharides from other plants (such as Astragalus membranaceus and Lycium barbarum). Related reports

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for extracting polysaccharide from jujube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] As shown in Figure 1, weigh 1 Kg of jujube that has been denuclearized and dried to constant weight, add 15 L of distilled water, and extract at 80 ° C for three times under reflux. Jujube and water mass volume ratio is 1: 8g / ml Concentrate under reduced pressure, add 1L of 1% chitosan acetic acid solution to the concentrated solution, after stirring evenly, let it stand for a certain period of time, and centrifuge; add anhydrous Ethanol, so that the volume concentration of ethanol reaches 70%, centrifuged after overnight alcohol precipitation; the obtained solid is dried to constant weight, and the jujube polysaccharide product is obtained. The yield of the obtained polysaccharide is 4.71%, and the content is 46.5%.

Embodiment 2

[0020] Weigh 20g of jujube that has been denuclearized and dried to constant weight, add 200ml of distilled water, and extract twice under reflux at 85°C. Mass volume ratio is 1: 5g / ml concentrating under reduced pressure, adds 1% chitosan acetic acid solution 20ml to concentrated solution, after stirring evenly, let stand for a certain period of time, centrifugal separation; The volume concentration reaches 70%, centrifuged after alcohol precipitation overnight; the obtained solid is dried to constant weight, and the jujube polysaccharide product is obtained. The obtained polysaccharide yield was 4.82%, and the content was 46.7%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention discloses a method tobextract polysaccharide from the jujube. The extraction process is of the following steps: (A) jujube is mixed with water and is extracted for 1 to three times; then the jujube experiences the centrifugal separation and vacuum low-pressure concentration; (B) clarifying agent is added into the jujube mass which is statically placed for centrifugal separation after stirring; (C) the separated sypernatant is added with alcohol, which is more than 70 percent in volume; the alcohol in the sypernatant is deposited overnight, and then the sypernatant experiences centrifugal separation; (D) the solid obtained is dried to get jujube polysaccharides. The jujube polysaccharides obtained through the present invention is more than 40 percent of the original jujube. The whole extraction and separation process involves no toxic and hazardous organic solvents. The present invention is safe and non-toxic. The operation is simple and the consumed time is short. A full green extraction can be achieved through the present invention.

Description

technical field [0001] The invention relates to a method for extracting polysaccharides from jujube, belonging to the technical field of natural product extraction. Background technique [0002] Jujube is the dry and mature fruit of Jujube, a plant of Rhamnaceae. It is a commonly used qi-invigorating drug and food in clinical practice of traditional Chinese medicine, and it is also an industrial raw material for preparing jujube essence. Jujube has been used in my country for more than 3,000 years, and its distribution range is extremely wide. It is mainly produced in five provinces of Hebei, Shandong, Shanxi, Henan, and Shaanxi. The total output of the five provinces accounts for more than 90% of the total jujube output in the country. Jujube is sweet and delicious, and rich in nutrition. Its main components are sugar, vitamin C, protein and crude fat. It can be eaten and used as medicine. Medicinal function, it has the laudatory title of "king of all fruits". [0003] Th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00
Inventor 樊君张倩胡晓云李海瑞高续春朱宏
Owner NORTHWEST UNIV(CN)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap