Method for efficiently saccharifying xylose residue or furfural residue

Abstract

The invention relates to a method for efficiently saccharifying biomass wastes such as xylose residue or furfural residue, comprising the following steps: performing steam exploding processing on biomass wastes such as xylose residue or furfural residue, then collecting materials after steam exploding, carrying out solid-liquid separation, and performing enzymolysis and saccharification on a solid phase obtained from separation. In the method of the invention, the crystallizing structure of cellulose is destroyed by steam exploding processing, the specific surface area of cellulose is increased, and the content of lignin is reduced, thereby reducing the use amount of cellulase during saccharification of lignocellulose materials, improving the enzymolysis efficiency, increasing sugar concentration in the enzymolysis solution, effectively reducing the cost for enzymolysis and sugar concentration utilizing lignocellulose materials, promoting industrialized recover and reuse to the waste, and being favorable for protecting the environment and saving resources.

Description

technical field [0001] The invention belongs to the technical field of biochemical industry, and in particular relates to a method for efficiently saccharifying xylose residue or furfural residue. Background technique [0002] Xylose mainly exists in plants in the form of polysaccharides, especially in agricultural product wastes such as corn cobs, straws, and cotton boll husks. Since xylose is not digested and absorbed after being ingested into the human body, it has no energy value and can satisfy the needs of dessert lovers to the greatest extent. In addition, it can also improve the microbial environment of the human body, activate bifidobacteria in the human intestinal tract and promote their growth. Therefore, in recent years, it has been widely used in food and beverages as a non-caloric sweetener, which is in line with the current social trend and suitable for obese and diabetic patients. However, when using biomass raw materials to produce products such as xylose a...

AI Technical Summary

Problems solved by technology

[0004] With the increasing use of biomass resources in human society, the discharge of biomass residues generated during the processing of lignocellulosic raw materials such as xylose residues and furfural residues is also increasing, such as random accumulation or digging pits to dump waste , not only will cause secondary dust and environmental pollution, but also cause a great waste of resources

Biomass waste residues produced during the processing of lignocellulosic raw materials such as xylose residues and furfural residues contain a lot of cellulose, which can be used for fermentation to produce sugars. Hydrolysis sugar production, because the waste residue contains about 26% lignin and about 8% hemicellulose, the substrate concentration is limited during enzymatic hydrolysis, the obtained sugar solution has a low concentration and a high miscellaneous sugar content, and the total sugar concentration is about About 8%, the purity of glucose is only about 77%, the sugar solution is difficult to meet the requirements of other fermentation processes; at the same time, due to the existence of lignin, the use effect of cellulase is affected, resulting in an increase in the amount of enzyme