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首页> 外文期刊>Acta Horticulturae >ETHANOL PRODUCTION FROM RAW SAGO STARCH UNDER UNSTERILE CONDITION
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ETHANOL PRODUCTION FROM RAW SAGO STARCH UNDER UNSTERILE CONDITION

机译：非灭菌条件下从原始淀粉淀粉中提取乙醇

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摘要

In order to utilize raw sago starch as fermentation material, mold strain (Aspergillus niger N-10) which produces raw sago starch hydrolyzing enzyme, was isolated. Maximum raw sago starch consumption rate by the strain was obtained when the initial pHof the medium was 3.5 and the enzyme . showed high stability and activity at lower pH values. Direct ethanol production from raw sago starch was investigated using a mixture of the strain and ethanol-producing-yeast, Saccharomyces cerevislae IFO 0309. Neither the growth of the strains nor ethanol production was inhibited in the mixed culture of the two strains. Moreover, when fed-batch mixed culture was conducted under unsterile condition (both the medium and the apparatus were not sterilized), about 30 g/1 of ethanol was produced with ethanol yield from raw sago starch Y_(P/S) of 0.40 (g-ethanol/g-starch).
机译：为了将西米淀粉原料用作发酵原料，分离了产生西米淀粉原料酶的霉菌菌株（黑曲霉N-10）。当培养基的初始pH为3.5和酶时，该菌株获得了最大的西米淀粉消耗率。在较低的pH值下显示出高稳定性和活性。使用菌株和产酵母酵母Saccharomyces cerevislae IFO 0309的混合物研究了从西米淀粉中直接生产乙醇的情况。在两种菌株的混合培养中，菌株的生长和乙醇的生产均未受到抑制。此外，在非灭菌条件下（培养基和设备均未灭菌）进行分批补料培养时，从西米淀粉Y_（P / S）为0.40（ g-乙醇/ g-淀粉）。

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