Preparation method of rice husk oligosaccharide

Abstract

The invention relates to the field of oligosaccharide preparation, in particular to a preparation method of rice husk oligosaccharide. The method comprises the following steps that rice husk is crushed and is subjected to low-temperature high-pressure treatment; after full steaming and sterilization, drying is performed; glucose, ferrous sulfate, thiamine, riboflavin, niacin, dopamine hydrochloride and sodium iodide are added and uniformly stirred; cellulase is inoculated for enzymolysis; the mixture and water are uniformly mixed; high-speed centrifugation is performed; the mixed materials obtained through centrifugation are fed into a centrifugal dehydrator to be dehydrated; liquid obtained through dehydration is collected; vacuum concentration, purification and vacuum drying are performed to obtain an oligosaccharide finished product. The yield of the finally obtained oligosaccharide finished product is higher than 18.2 percent; the content of isomaltose oligosaccharide in the obtained oligosaccharide finished product accounts for 62 percent or higher.

Description

technical field [0001] The invention relates to the field of oligosaccharide preparation, in particular to a preparation method of rice husk oligosaccharide. Background technique [0002] Oligosaccharides, also known as oligosaccharides, integrate nutrition, health care and diet therapy, and are widely used in food, health care products, beverages, medicines, feed additives and other fields. It is a new functional sugar source that replaces sucrose. There are two main types of oligosaccharides. One is maltose oligosaccharides, which are easy to digest, low sweetness, and low permeability. They can prolong energy supply time, enhance body endurance, and resist fatigue. and other functions, and the other is the isomaltooligosaccharide called "bifidus factor". This kind of sugar enters the large intestine as the proliferation factor of bifidobacteria, which can effectively promote the growth and reproduction of beneficial bacteria in the human body—bifidobacteria, and inhibit ...

AI Technical Summary

Problems solved by technology

This kind of sugar enters the large intestine as the proliferation factor of bifidobacteria, which can effectively promote the growth and reproduction of beneficial bacteria in the human body—bifidobacteria, and inhibit the growth of spoilage bacteria. Long-term consumption can slow down aging, laxative, antibacterial, cancer prevention, Anti-cancer, reduce the burden on the liver, and improve the rate of nutrient absorption, so oligosaccharides are a new generation of "future-type" functional food for the 21st century. It is a new product with a wide range of applications and application prospects. Popular, the development and application of oligosaccharides in my country started in the mid-1990s, and has developed rapidly in recent years. Rice husk is one of the main agricultural and sideline products in my country. The cost of making oligosaccharides from rice husks is low, so it is popular among oligosaccharide developers Welcome, at present, if cellulase is directly used to enzymatically hydrolyze rice husks, the enzymatic hydrolysis effect is poor, and the yield of oligosaccharides is extremely low. Rice husk fiber, and then use cellulase to enzymatically hydrolyze the fiber. Although this treatment process improves the yield of oligosaccharides, the treatment process consumes a lot of water, and the waste water generated is not easy to treat