| 乙醇-黄原胶耦联两步发酵 |
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| 引用本文： | 吴剑荣,李朝廷,郑志永,詹晓北.乙醇-黄原胶耦联两步发酵[J].生物加工过程,2011,9(2):1-4. |
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| 作者姓名： | 吴剑荣 李朝廷 郑志永 詹晓北 |
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| 作者单位： | 江南大学,生物工程学院,工业生物技术教育部重点实验室,无锡,214122 |
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| 基金项目： | 博士点基金新教师项目(20077434) |
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| 摘 要： | 初步探索乙醇-黄原胶耦联两步发酵的可行性和生产工艺,即控制乙醇发酵,发酵液去除固形物后蒸馏回收酒精,然后利用酒精糟液中剩余营养物质进行黄原胶发酵。摇瓶和小罐试验证实方案是可行的,耦联发酵工艺优化条件:选择木薯淀粉进行乙醇发酵60 h后的酒精糟液,添加2 g/L KH2PO4,不添加无机N源。在优化条件下,7 L发酵罐中耦联发酵的黄原胶产量达到20 g/L,转化率约为50%。
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| 关 键 词： | 耦联两步发酵 乙醇 黄原胶 |
Ethanol-xanthan coupled two-stage fermentation |
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| WU Jianrong,LI Chaoting,ZHENG Zhiyong,ZHAN Xiaobei.Ethanol-xanthan coupled two-stage fermentation[J].Chinese Journal of Bioprocess Engineering,2011,9(2):1-4. |
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| Authors: | WU Jianrong LI Chaoting ZHENG Zhiyong ZHAN Xiaobei |
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| Institution: | WU Jianrong,LI Chaoting,ZHENG Zhiyong,ZHAN Xiaobei(Key Laboratory of Industrial Biotechnology of the Ministry of Education,School of Biotechnology,Jiangnan University,Wuxi 214122,China) |
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| Abstract: | The feasibility and the technology of the ethanol-xanthan coupled two-stage fermentation were investigated.When ethanol fermentation was stopped ahead of time,the solid content was removed by centrifugation,the ethanol in the broth was recovered by distillation and the thin distiller with many nutrients was used for xanthan fermentation.The test in flask culture and 7 L batch fermentor proved the feasibility of the novel technology.The optimal conditions for the coupled fermentation were as follows:the thin... |
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| Keywords: | coupled two-stage fermentation ethanol xanthan gum |
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