玉米芯酸解副产物对休哈塔假丝酵母的影响

来源 :中国(国际)生物质能源与生物质利用高峰论坛 | 被引量 : 0次 | 上传用户：lanbing510

【摘要】

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【作者】

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关东明张红杜明华

【机构】

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中国矿业大学(北京)化学与环境工程学院,北京市海淀区学院路丁11号,100083

【出处】

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中国(国际)生物质能源与生物质利用高峰论坛

【发表日期】

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2013年2期

【关键词】

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副产物休哈塔假丝酵母生长发酵

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　　研究了玉米芯经过稀酸预处理后的副产物乙酸、甲酸、香草醛、糠醛和羟甲基糠醛对休哈塔假丝酵母的生长和发酵的影响，结果显示：乙酸浓度在1g/L以内时对菌株发酵产乙醇的影响不大，浓度为3g/L时乙酸就会使发酵液中的木糖消耗速度和菌体生物量明显低于对照；甲酸对微生物的抑制作用要强于乙酸，当甲酸浓度达到2g/L时就完全抑制了发酵的进行；糠醛浓度小于1.5g/L时有利于乙醇的生成，但对发酵液中菌体的生长有一直作用；0.2g/L的羟甲基糠醛会使得菌株产乙醇的量大幅度降低，但此浓度对酵母菌体生长有促进作用，发酵液中生物量高于对照；浓度为2g/L香草醛明显抑制了假丝酵母的生长，而在浓度小于0.8g/L时抑制作用不明显.为菌株的驯化提供理论依据.

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玉米芯酸解副产物对休哈塔假丝酵母的影响

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