Establishment of a Highly Efficient Corn Stock-Degrading Microbial Consortium and Its Degradation Effect

Corn stalks are not easily degradable and thus have a low utilization rate. In this paper, highly efficient corn stalk-degrading microbial consortium, designated as SDP, was established using the strains Z22 (Bacillus subtilis), Z15 megaterium), Z08 (Aspergillus tubingensis). Moreover, fermentation conditions for enzyme production by SDP were optimized through orthogonal experiments. The Van Soest method used to determine cellulose, hemicellulose, lignin contents in degraded consortium evaluate its degrading effect. Scanning electron microscopy analyze micromorphological structure changes of degradation effects on stalks. carboxymethyl cellulase activity reached 6.37 U/mL. effect optimal when culture follows: temperature, 30°C; time, 5 d; nitrogen source, NH4NO3; initial pH, 7.0. showed an improved ability degrade reduced 32.15%, 23.87%, 7.98%, respectively, after culturing 20 d. This study provides insights guide further research development consortia stalk degradation.