| 木薯酒精蒸馏废液循环回用工艺的探讨 |
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| 引用本文： | 张桂英,张成明,姜立,毛忠贵. 木薯酒精蒸馏废液循环回用工艺的探讨[J]. 食品与发酵工业, 2012, 38(4): 34-38 |
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| 作者姓名： | 张桂英 张成明 姜立 毛忠贵 |
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| 作者单位： | 江南大学工业生物技术教育部重点实验室,江苏无锡214122／江南大学生物工程学院,江苏无锡214122 |
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| 基金项目： | “十一五国家863”项目，江苏省科技支撑计划 |
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| 摘 要： | 研究了木薯酒精发酵中,蒸馏废液回用比分别为30%(v/v),50%(v/v),70%(v/v)和90%(v/v)时对酒精发酵的影响,循环回用实验共进行11批。结果表明,循环回用比例为30%(v/v)时对酒精发酵略有影响;当循环回用比例≥50%(v/v)时,随着循环批次的增加,酒精产量下降。蒸馏废液中,酿酒酵母及污染杂菌产生的代谢副产物(如有机酸、甘油等)的累积是造成酒精产量下降的主要原因。而蒸馏废液中氨氮的累积造成了发酵液颜色的加深。
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| 关 键 词： | 木薯酒精 蒸馏废液回用 回用比例 清洁生产 |
Study on the Recycling Process of the Distillery Waste in Cassava-based Ethanol Fermentation |
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| Zhang Gui-ying,Zhang Cheng-ming,Jiang Li,Mao Zhong-gui. Study on the Recycling Process of the Distillery Waste in Cassava-based Ethanol Fermentation[J]. Food and Fermentation Industries, 2012, 38(4): 34-38 |
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| Authors: | Zhang Gui-ying Zhang Cheng-ming Jiang Li Mao Zhong-gui |
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| Affiliation: | 1,2 1(The key Laboratory of Industrial Biotechnology,ministry of Education,School of Biotechnology,Jiangnan University,Wuxi 214122,China) 2(School of Biotechnology,Jiangnan Univesity,Wuxi 214122,China) |
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| Abstract: | The effects on ethanol fermentation with cassava is studied,when the recycling proportion of distillery waste is 30%,50%,70% and 90% respectively.Up to eleven fermentation cycles were conducted.The results showed that,the slight influence were found in alcohol fermentation when recycling proportion is 30%,when recycling proportion is above 50%(include 50%) ethanol yield descended with the increasing of recycles.The accumulation of metabolic by-products such as organic acids,glycerin produced by Saccharomyces cerevisiae and other contamination bacteria in the distillery waste is the main reason,which Reduce the ethanol yield,The accumulation of ammonia nitrogen in the distillery waste fermentation also caused the color to deepen. |
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| Keywords: | Cassava alcohol distillery waste recycle recycle proportion clean production |
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