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林产化学与工业 ›› 2009, Vol. 29 ›› Issue (6): 15-19.

• 研究报告 • 上一篇    下一篇

里氏木霉与黑曲霉混合发酵产纤维素酶的研究

方浩, 宋向阳, 赵晨, 常铮, 储洁, 勇强   

  1. 南京林业大学 林木遗传与生物技术省部共建教育部重点实验室, 江苏 南京 210037
  • 收稿日期:2009-06-17 修回日期:1900-01-01 出版日期:2009-12-30 发布日期:2009-12-30
  • 通讯作者: 宋向阳(1965- ),男,副教授,博士,研究方向为生物化工;E-mail:xiangyangsong@hotmail.com。

Cellulase Production from Mixed Fermentation of Trichoderma reesei RUT C-30 and Apsergillus niger NL02

FANG Hao, SONG Xiang-yang, ZHAO Chen, CHANG Zheng, CHU Jie, YONG Qiang   

  1. Key Laboratory of Forest Genectics & Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
  • Received:2009-06-17 Revised:1900-01-01 Online:2009-12-30 Published:2009-12-30

摘要: 研究了利用里氏木霉和黑曲霉混合培养的形式产纤维素酶,以两个菌种的不同接种比和延迟黑曲霉的接种时间来寻找两个菌种发挥最大协同作用的结合点。以农林废弃物之一的玉米秸秆为底物,经过蒸汽爆破预处理后,用作产酶碳源。以里氏木霉单一培养与黑曲霉单一培养为参照进行对比研究。结果表明,黑曲霉接种较里氏木霉延迟 48 h,里氏木霉与黑曲霉接种量比为5:1时,滤纸酶活最高,达 3.295 IU/mL,高于里氏木霉单一培养(2.480 IU/mL),β-葡萄糖苷酶活达 1.010 IU/mL,也远远高于里氏木霉单一培养(0.243 IU/mL)。本实验充分证明里氏木霉与黑曲霉混合培养产酶是可行的,并优于单一菌种培养。

关键词: 玉米秸秆, 里氏木霉, 黑曲霉, 混合培养, 纤维素酶

Abstract: Cellulase production from mixed fermentation of Trichoderma reesei and Aspergillus niger was investigated. The balance point of the two strains was established by delaying inoculation time of A.niger and using different inoculum ratios. The time courses of cellulase production by monoculture of T.reesei and A.niger were used as controls. It was found that the highest filter paper activity(FPA), 3.295 IU/mL, was obtained when delay in A.niger inoculation was 48 h and volumetric inoculum ratio of T.reesei versus A.niger was 5:1, higher than the FPA of the monoculture of T.reesei, 2.480 IU/mL. The β-glucosidase activity(β-GA) also increased from 0.243 IU/mL of the monoculture of T.reesei to 1.010 IU/mL of the mixed culture aforementioned. It was demonstrated that the mixed fermentation of T.reesei and A.niger was feasible and superior to the monoculture of T.reesei or A.niger.

Key words: corn stover, T.reesei, A.niger, mixed culture, cellulase

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