Study on Degradation of Cellulose-rich Substrates by Bacillus licheniformis

Bacillus lincheniformis is a representative probiotic,widely used in food,medicine and livestock industries and other industries.In this experiment,a strain of Bacillus lincheniformis was isolated and identified,which was used to ferment cellulose-rich substrate.The effects were analyzed.The experimental results showed that Bacillus lincheniformis had the capacity to degrade cellulose (32.8% was degraded) and less capacity to degrade hemicellulose (7.9% was degraded), which could not degrade ligin. The total protein contents in the products fermented by Bacillus lincheniformis with cellulose-rich substrate riched by 11.6%,compared with the fermented products with no cellulose-rich substrate, furthermore, the contents of Met, Lys and Leu riched by 14%, 17.5% and 4.1%,respectively.These results showed that Bacillus lincheniformis had the ability to degrade cellulose and it provided experimental data for further utilization.