Lignocellulose in maize straw includes cellulose, hemicellulose, and lignin, and the degradation of lignocellulose is a complex process in which multiple enzymes are jointly involved. In exploring the co-degradation of a certain substrate by multiple enzymes, different enzymes are combined freely for the achievement of the effective synergism. Additionally, some organic acids and small molecule aromatic compounds can also increase the enzymatic activity of lignin enzymes and improve the degradation rate of lignin. In this study, manganese peroxidase (MnP) from Irpex lacteus (I. lacteus) was heterologously expressed in food-grade Schizosaccharomyces pombe (S. pombe). The multiple enzymes co-fermentation conditions were initially screened by orthogonal tests: 0.5% CaCl
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