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利用12C6+离子诱变技术对面包酵母菌种进行诱变,得到一株粗蛋白含量达到55%以上的菌株,借助Minitab16.0,采用Plackett-Burman 实验设计法及响应面分析法,对诱变后面包酵母菌发酵培养基的成分进行了优化,得到3个最为显著的主要影响因子:葡萄糖、酵母抽提物和硫酸镁。利用最陡爬坡实验逼近最大响应区域后,利用Box-Behnken实验设计及响应面分析法进行回归分析。通过求解回归方程,得到优化发酵的条件为,葡萄糖:11.03 g/L、酵母抽提物:6.53 g/L、硫酸镁:5.59 g/L。面包酵母生物量为4.84 g/L,相比未进行优化时的生物量提高了15%。

10.11804/NuclPhysRev.30.02.201

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