Hydrolyzed liquid prepared from corn peel, its preparation method and application

Abstract

The invention belongs to the bioengineering field, and discloses digest prepared from corn skin and its production method and application. The digest is prepared by treating the corn skin with physical method, and then treating the crushed corn skin with chemical and / or biological method to obtain the digest containing glucose, xylose, arabinose, galactose and mannose and the total amount of the monosaccharide occupies 54-71.9% wt. of the dry corn skin. The digest can be used for the preparation of medium. The digest of the invention can be used as sugar source for fermentation instead of glucose, lowers the fermentation cost, increases economic returns, makes full use of renewable resources, promotes the integrated usage of corn skin, reduces environmental pollution, improves ecological environment, promotes the sustainable development of national economy, and has wide social effects.

Description

technical field [0001] The invention belongs to the technical field of bioengineering, and relates to a hydrolyzate prepared from corn bran, and also relates to a preparation method and application of the hydrolyzate. Background technique [0002] Corn bran, also known as corn fiber, is a by-product produced during the deep processing of corn. Corn husks are mainly some outer peels or seed coats that adhere to starch, which is a very good renewable resource, accounting for about 10% of the total mass of corn. According to the source of the material and the analysis method used for its qualitative analysis, the results of the composition analysis also change accordingly, mainly containing 15-20% starch, 10-13% protein, 20-22% cellulose, 30-45% Hemicellulose, 2-3% oil, 1-2% ash, 3%-7% other components, in which cellulose is mainly composed of glucose molecules connected by β-1,4 glycosidic bonds. , Hemicellulose is composed of polypentose, polyhexose and polyuronic acid. Ab...

AI Technical Summary

Problems solved by technology

At present, many industrial products such as ethanol, lactic acid and other chemicals directly use corn as raw material for liquefaction and saccharification as raw materials for fermentation. Since corn bran contains cellulose, hemicellulose and other components, it cannot be used by these microorganisms, and the fermentation is over. Afterwards, it is directly discharged as waste, causing environmental pollution and waste of resources.

At present, the treatment method of adding hemicellulase after alkali hydrolysis is used to treat corn bran, the yield of monosaccharide is not high and it is easy to produce furfural compounds that have an inhibitory effect on the fermentation process.