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中国生物工程杂志

China Biotechnology
China Biotechnology  2014, Vol. 34 Issue (2): 84-92    DOI: 10.13523/j.cb.20140214
    
Isolation, Identification of Trichoderma ghanense and Optimization of Spores Production
GAO Xue-li, WU Jian-ping, XU Gang, YANG Li-rong
Zhejiang University, Department of Chemical and Biological Engineering, Hangzhou 310027, China
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Abstract  A strain,having strong antagonistic activity toward phytopathogens, was identified as Trichoderma ghanense by the methods of molecular biology. This strain of Trichoderma ghanense as testing strain,optimization of the solid state fermentation medium was performed to improve the spore yield. Through the single factor experiment, Plackett-Burman experiment, the steepest ascent experiment and the response surface analysis, sugar,corn steep liquor and MgSO4were identified as the most important factors to influence the spore yield. The optimal concentration of the three factors is 0.56%, 0.56% and 2.59% respectively. The optimal initial water content of the medium was identified as 35% and the optimal initial pHwas identified as 9. The highest spore yield have been achieved as 1.16×109 CFU/g initial dry substrate (IDS) on the optimized solid state medium, which is 17 times higher than the initial medium.

Key wordsTrichoderma ghanense      Isolation      Identification      Solid state fermentation      Response surface analysis     
Received: 06 December 2013      Published: 25 February 2014
ZTFLH:  Q815  
  Q819  
Cite this article:

GAO Xue-li, WU Jian-ping, XU Gang, YANG Li-rong. Isolation, Identification of Trichoderma ghanense and Optimization of Spores Production. China Biotechnology, 2014, 34(2): 84-92.

URL:

https://manu60.magtech.com.cn/biotech/10.13523/j.cb.20140214     OR     https://manu60.magtech.com.cn/biotech/Y2014/V34/I2/84

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