›› 2009, Vol. 43 ›› Issue (2): 27-33.
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AI Bin-ling, WANG Yi-qiang, CHEN Jie-nan
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Abstract: The effect of bran content on cellulase production by Trichoderma reesei Rut C-30 was studied through adding bran in appropriate amounts and investigating suitable ratio of bran to microcrystalline cellulose by software of Design-Expert. The results showed that bran in appropriate amounts could accelerate the production of cellulase. The optimal conditions for cellulase production obtained by the design of rotation-regression-orthogonal combination were 12.23 g/L of microcrystalline cellulose and 23.50 g/L of bran.Filter paper activity and yield coefficient in 250 mL shake flask was 6.383 FPIU/mL and 521.913FPIU/g, respectively. Filter paper activity and yield coefficient in 7.5L fermentor was 6.807 FPIU/mL and 556.582 FPIU/g, respec-tively. Filter paper activity in shake flask and fermentor increased 14.247% and 17.403%, after optimization, respectively. Yield of cellulase decreased 6.584% and 4.005%, respectively. Filter paper activity were 1.953 FPIU/mL and 1.745 FPIU/mL, when replacing microcrystalline cellulose with dilute acid pretreated poplar and steam exploded poplar, respectively.
Key words: Trichoderma reesei, cellulase, the design of the rotation-regression-orthogonal combination, specific cell growth rate, specific cellulase production rate
CLC Number:
TQ920
AI Bin-ling;WANG Yi-qiang;CHEN Jie-nan. Enhancement of Bran to Cellulase Production by Trichoderma reesei Rut C-30[J]. , 2009, 43(2): 27-33.
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http://www.bce.ac.cn/EN/Y2009/V43/I2/27