A kind of water-soluble kudzu root fiber oligosaccharide and preparation method thereof

Abstract

The invention discloses water-soluble radix puerariae fiber oligosaccharide and a preparing method thereof. The preparing method includes the steps that 1, radix puerariae residues are adopted as a raw material, water is added, and the radix puerariae residues are smashed in a stirred mode to obtain radix puerariae residue pulp; 2, the radix puerariae residue pulp is placed in an electric heating oil bath pan for steam precooking, and radix puerariae fiber residues are obtained through suction filtration; 3, the radix puerariae fiber residues are prepared into radix puerariae fiber residue pulp; 4, the radix puerariae fiber residue pulp is subjected to enzyme hydrolysis for two times and treated ultrasonically and supplementarily to obtain radix puerariae fiber hydrolysate; 5, membrane separation is carried out on the radix puerariae fiber hydrolysate obtained after enzyme hydrolysis is conducted for two times, fiber oligosaccharide with the polymerization degree of 2-5 is enriched, and the good-water-solubility fiber oligosaccharide with the polymerization degree of 2-5 can be prepared. The water-soluble radix puerariae fiber oligosaccharide can serve as prebiotics to be applied to related functional food and medicine, new resources are developed, and a new way is provided for full utilization of radix puerariae.

Description

technical field [0001] The invention relates to a kudzu root cellooligosaccharide, in particular to a water-soluble kudzu root fiber oligosaccharide mixture with a polymerization degree of 2 to 5, and also relates to a preparation method of the kudzu root cellooligosaccharide. Background technique [0002] Pueraria lobata is the root of the Pueraria genus in the leguminous family. As a product that is both food and medicine, it has been recorded in the first medical monograph "Shen Nong's Materia Medica" more than 2,000 years ago. It is a commonly used traditional Chinese medicine and also belongs to my country's health The common resources of medicine and food announced by the Ministry of Health. Studies have shown that isoflavones such as puerarin, puerarin xyloside, genistein, daidzein, daidzein and other isoflavones are its main active ingredients, which have the functions of lowering blood fat, blood sugar, blood alcohol, anti-aging, anti-inflammatory Cancer, anti-fatig...

AI Technical Summary

Problems solved by technology

[0005] At present, the preparation of cellooligosaccharides mainly adopts two methods: acid hydrolysis and enzymatic hydrolysis. The preparation process of acid hydrolysis is relatively mature, but the purification process is relatively complicated, and a large amount of waste acid will be produced during the production process, which is easy to cause environmental pollution. Moreover, the high-temperature process of acid hydrolysis may also produce harmful by-products to the human body, which will affect its application in the field of food and medicine; the preparation of cellooligosaccharides by enzymatic hydrolysis avoids the defects of acid hydrolysis, but because the natural cellulose structure is dense and even forms crystallization area, thereby reducing the accessibility of cellulase to cellulose, resulting in inefficient enzymatic hydrolysis of cellulose and low yield of cellooligosaccharides