蔡守平. 绿僵菌MaZPTR01菌株固体发酵条件筛选研究[J]. 西南林业大学学报, 2016, 36(5): 100-105. DOI: 10.11929/j.issn.2095-1914.2016.05.017
引用本文: 蔡守平. 绿僵菌MaZPTR01菌株固体发酵条件筛选研究[J]. 西南林业大学学报, 2016, 36(5): 100-105. DOI: 10.11929/j.issn.2095-1914.2016.05.017
Cai Shouping1. Optimization in Solidstate Fermentation of Metarhizium anisopliae MaZPTR01[J]. Journal of Southwest Forestry University, 2016, 36(5): 100-105. DOI: 10.11929/j.issn.2095-1914.2016.05.017
Citation: Cai Shouping1. Optimization in Solidstate Fermentation of Metarhizium anisopliae MaZPTR01[J]. Journal of Southwest Forestry University, 2016, 36(5): 100-105. DOI: 10.11929/j.issn.2095-1914.2016.05.017

绿僵菌MaZPTR01菌株固体发酵条件筛选研究

Optimization in Solidstate Fermentation of Metarhizium anisopliae MaZPTR01

  • 摘要: 以绿僵菌MaZPTR01菌株为发酵菌株,进行最佳固体发酵培养基、不同加水量及加水顺序筛选,培养基不同厚度对产孢的影响,以及测定固体发酵过程中的温度变化等试验。结果表明:不同培养基组分及配比对绿僵菌的产孢量影响均极为显著,绿僵菌MaZPTR01菌株的最佳固体发酵培养基配比为A1B3C1D3,即V (玉米粉)∶ V (麦麸)∶ V (米粉)∶ V (谷壳)=1∶3∶1∶3;固体培养基加水后灭菌的处理绿僵菌产孢量显著较先灭菌后加无菌水的处理要高;每500g固体培养基加水400mL混合后灭菌的物理状态好、产孢量最高,固体培养基厚度以5cm培养效果最好;通过测定绿僵菌固体发酵过程中的温度变化与对绿僵菌生长情况的观察,发现0~24h为生长延滞期,24~48h为对数生长期,48~96h为生长稳定期,之后为生长衰退期 (产孢阶段)。

     

    Abstract: In this paper, took Metarhizium anisopliae MaZPTR01 as the fermentation strain, optimum solid state fermentation medium, water content and wateradding order were screened, the different thickness of medium for sporulation was determined, meanwhile the temperature dynamic of the medium during the fermentation process was monitored. The results showed that composition and proportion of different medium had a significant effect on conidial production of Metarhizium anisopliae MaZPTR01. The proportion of optimized medium in solidstate fermentation was A1B3C1D3, that was composed of corn flour (1 portion, volume ratio, the same below), wheat bran (3 portions), rice flour (1 portion), and rice hull (3 portions). The conidial production in the treatment which the medium was sterilized after adding water was higher than the treatment which the medium was sterilized before adding water. The medium of 500g solid medium mixed with 400g water had the ideal physical state and the highest conidial production after sterilization. 5cmthickness solid medium has the best culture efficiency. Based on the temperature variation curve during the fermentation, 0-24h was the lag phase, 24-48h was the logarithmic phase and 48-96h was stationary phase followed by decline phase (sporulation phase).

     

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