Investigating the Acclimation and Degradation Characteristics of the Microbial Degradation System in Corn Straw

Lignocellulose represents a significant biological resource in corn straw, yet its efficient degradation presents challenges. This study aimed to enhance the degradation rate of lignocellulose to expand the utility of corn straw. A microbial system capable of degrading corn straw was acclimatized using a static temperature limiting cultivation method. During the biodegradation process via fermentation, the concentration of organic acids peaked on the third day before gradually declining. Concurrently, the concentration of soluble sugars reached a maximum on the third day, while the total sugar content swiftly reduced within the initial three days and subsequently stabilized. The glycoside hydrolases (GHs) and glycosyl transferases (GTs) emerged as two pivotal enzyme groups, comprising 4837 and 1882 genes, respectively. Notably, the hemicellulase and cellulase family genes within the GHs played a crucial role in breaking down hemicellulose and cellulose. A variety of lignocellulose-degrading enzymes were identified among the GHs.