[Selection of a composite microbial system MC1 with efficient and stability cellulose degradation bacteria and its function]

Four groups of microbial mix culture with considerable capability of cellulose degradation were selected from four compost heaps, by combining the four groups, a composite microbial system MC1 with highly efficient cellulose degradation was obtained. It was found that 0.48 g of filter paper, 0.49 g of absorbent cotton, 0.19 g of wheat straw, or 0.08 g of wood residue can be degraded by 100 mL of MC1 at 50 degrees C with in 72 hours under static culture. The CM1 saccharification activity was much higher at 24th hours when degrading filter paper that was 122.3 U.mL-1. This capability of degradation maintained more than 20 days when the substrates were continually added. MC1 could be inoculated in a wide pH rang, from 4 to 10; however, the final pH would be changed to neutrality after incubation. The pH would be stability with filter paper between 6.0 and 6.5, and between 8.0 and 8.5 without the filter paper.