鲁氏酵母发酵培养基及发酵条件的优化Optimization of Medium Components and Fermentation Conditions of Zygosaccharomyces rouxii
康远军,李欣,陈雄,王志
摘要(Abstract):
鲁氏酵母(Zygosaccharomyces rouxii)是常见的耐高渗透酵母菌,是酱油酿造过程中重要的增香酵母。通过单因素筛选及正交实验方法进行了发酵培养基的优化,同时对鲁氏酵母摇瓶发酵工艺进行了优化。结果表明:培养基的最佳配比为葡萄糖12%,玉米浆2%,酵母浸粉2%,KH2PO40.1%;最佳发酵工艺为初始pH 5.0,培养温度28℃,接种量5%。在该条件下鲁氏酵母在优化培养基发酵最终OD600nm达到51.8,细胞干重达到20.57g/L,明显高于优化前发酵结果。
关键词(KeyWords): 鲁氏酵母;发酵;优化
基金项目(Foundation): 湖北省自然科学基金重点项目(2012FFA058);; 武汉市重点科技攻关项目(201220822278-1)
作者(Author): 康远军,李欣,陈雄,王志
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