2.Enzymatic hydrolysis process

Due to the activity of microorganisms, various enzymes are produced, which destroy the structure of cellulose, hemicellulose, and lignin in the straw and make them degrade step by step to form various sugars. The enzymatic hydrolysis process of straw is relatively slow. With the increase of microbial reproduction and the improvement of microbial activity, the straw is gradually enzymatically hydrolyzed into sugars. Hemicellulose is most easily degraded throughout the enzymatic hydrolysis proofreading, while a larger amount of xylose, arabinose, glucose, mannose, and galactose is formed. When these sugars reach a certain concentration, microorganisms can use these sugars as substrates for acid production and fermentation.
