Expression Characteristics of Enzyme Activity of a Multi-functional Bacterial Community NSC-7

Abstract:

In order to determine the degradation activity of the microbial community NSC-7, which had efficient cellulose and lindan degrading ability, degrading ability and four kinds of cellulase activity and hemicellulase activity were detected during degradation progress. The results showed that NSC-7 could degrade 73.6% of rice staw in weight, including 82.1% of cellulose, 58.2% of hemicellulase, and 5.4% of lignin within fourteen days. Endoglucanases, exoglucanases, β-glucosidases and the total cellulase activities reached to maximum at the eighth day, and they were 4.48 U/mL, 15.83 U/mL, 25.78 U/mL and 7.51U /mL, respectively. The maximum of hemicellulase activity was 280.6 U/mL at the fifth day, and the average of hemicellulase activity was 43.71 times higher than cellulase activity.