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A kind of tobacco potato polysaccharide with α-1,3-glucan chain and its preparation method

A technology of dextran and tobacco, which is applied in the field of tobacco polysaccharides and its preparation, can solve the problem of low comprehensive utilization of sweet potatoes, and achieve the effect of improving the liver/body ratio

Active Publication Date: 2018-09-25
HARBIN UNIV OF COMMERCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem that the current comprehensive utilization rate of sweet potato is low and there are many varieties of sweet potato polysaccharides, and the monosaccharide composition, relative molecular weight, and glycosidic bond connection mode of different varieties of sweet potato polysaccharides vary widely in structural information, and provides a kind of polysaccharide with α -1,3-glucan chain tobacco potato polysaccharide and preparation method thereof

Method used

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  • A kind of tobacco potato polysaccharide with α-1,3-glucan chain and its preparation method
  • A kind of tobacco potato polysaccharide with α-1,3-glucan chain and its preparation method
  • A kind of tobacco potato polysaccharide with α-1,3-glucan chain and its preparation method

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specific Embodiment approach 1

[0035] Specific implementation mode one: the present implementation mode is a kind of tobacco potato polysaccharide with α-1,3-glucan chain, and its structural formula is:

[0036] Among them, n is 340~345, and the relative molecular mass is 2.40×10 5 Da~2.46×10 5 Da, the repeating structural unit contains 1→3 and 1→6 glycosidic bonds, the main chain is 1→3 glycosidic bonds, the side chain is composed of 1→6 glycosidic bonds, the sugar residue is α configuration, and the branching degree is 0.33 .

specific Embodiment approach 2

[0037]Specific embodiment two: This embodiment is the preparation method of tobacco potato polysaccharides with α-1,3-glucan chains in specific embodiment one, specifically:

[0038] 1. Preparation of tobacco potato crude polysaccharide: clean tobacco potato 25, peel, cut into pieces, dry naturally, pulverize, pass through a 50-mesh sieve to obtain tobacco potato powder, and put the tobacco potato powder into ethanol with a mass fraction of 95%. Degrease by soaking in water for 24h-48h, take it out and dry it naturally, then carry out hot water leaching, suction filtration to obtain the extract, and concentrate the extract under reduced pressure to obtain the concentrate I, put the concentrate I into a mass fraction of 95 % ethanol solution for 12h to 24h, suction filtered to obtain precipitate I, precipitate I was vacuum-dried to obtain precipitate powder, precipitate powder was put into distilled water to obtain a concentration of 2mg / mL crude polysaccharide solution I, and t...

specific Embodiment approach 3

[0044] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the conditions of the hot water extraction described in step one are: the extraction temperature is 65°C to 85°C, and the extraction time is 1.5h to 3h. The mass ratio of the naturally dried tobacco potato 25 to water is 1:(10-20), and the extraction times are 2-4 times. Others are the same as in the second embodiment.

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Abstract

The invention provides Yantai sweet potato polysaccharide with an alpha-1,3-glucan chain and a preparation method of the Yantai sweet potato polysaccharide, relates to Yantai sweet potato polysaccharide and a preparation method thereof, and aims to solve the technical problems that at present, comprehensive utilization ratio of sweet potatoes is low, varieties of the sweet potato polysaccharide are wide, and structural information such as monosaccharide compositions of sweet potato polysaccharide in different varieties, relative molecular mass and a glucosidic bond connection mode differs in thousands of ways. The structural formula of the Yantai sweet potato polysaccharide with the alpha-1,3-glucan chain is as shown in the specification, wherein n is 340-345, and the relative molecular mass is 2.40*105Da-2.46*105Da. The preparation method of the Yantai sweet potato polysaccharide comprises the following steps: firstly, preparing Yantai sweet potato crude polysaccharide; and secondly, purifying. The Yantai sweet potato polysaccharide with the alpha-1,3-glucan chain has the advantages that water-soluble branching type alpha-1,3-glucan is extracted and purified from Yantai sweet potatoes, and the polysaccharide has effect of protecting the liver; and the polysaccharide content of the Yantai sweet potato polysaccharide with the alpha-1,3-glucan chain is 98.47%.

Description

technical field [0001] The invention relates to a tobacco potato polysaccharide and a preparation method thereof. Background technique [0002] Polysaccharides are a class of complex high-molecular carbohydrates, together with proteins, nucleic acids and lipids, constitute the four basic substances of life. Sweet potato polysaccharides also have antioxidant and immunomodulatory effects. my country is a big sweet potato producing country. Through gray multidimensional comprehensive analysis in the application of evaluation of edible sweet potato varieties, the yield and comprehensive evaluation of Yanshu 25 ranked first, and the correlation degree of its comprehensive evaluation was 0.8621, which was 20.22% higher than that of the control, indicating that Yanshu 25 solves the contradiction between high yield and high quality. Therefore, the extraction and purification of tobacco polysaccharides provide a preliminary work basis for the efficient use of tobacco polysaccharides...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/02A61K31/716A61P1/16A61P39/06
CPCA61K31/716C08B37/0003C08B37/0009
Inventor 汲晨锋綦峥季宇彬
Owner HARBIN UNIV OF COMMERCE