Degradation Pattern of CMC, Xylan, Lignin Components of Rice Straw by Bacillus subtilis DO4

Bacillus subtilis DO4에 의한 볏짚의 CMC, Xylan 및 Lignin 성분의 분해양상에 관하여

To investigate the biodegradation pattern of rice straw, mainly composed of cellulose, hemicellulose and lignin components, by the isolate stran Bacillus subtilis $DO_4$, the change of cell population was observed on CMC (carboxymethyl cellulose), larch wood xylan and lignosulfonate as a carbon source respectively. Also, the transition pattern of enzyme activities of cellulase and xylanase and lignin contents was measured on rice straw and mixed substrate according to growth. The results in these experiments revealed that xylanase activity was first appeared and cellulase activity in the next, while lignin component was almost not changed through the culture period.