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    • 4. 发明专利
    • Method for producing ethanol
    • 生产乙醇的方法
    • JP2011087478A
    • 2011-05-06
    • JP2009241693
    • 2009-10-20
    • Akita PrefectureJx Nippon Oil & Energy CorpJx日鉱日石エネルギー株式会社秋田県
    • SHINDO AKIRASUGIMOTO ISATONISHIDA TAKANOBUKAMIMURA TAKESHIMUTAGUCHI SHOEIFUKUDA AKIRA
    • C12P7/10
    • Y02E50/16
    • PROBLEM TO BE SOLVED: To provide a method for producing ethanol, including fermenting a saccharification solution containing hexoses and pentoses originated from biomass with yeasts, by which the yield of the ethanol can sufficiently be improved.
      SOLUTION: The method for producing ethanol includes treating biomass having a protein content of 1.5 to 12 mass% based on the dry mass of the biomass and containing cellulose with ammonia, hydrolyzing the obtained modified biomass to obtain the saccharification solution containing hexoses and pentoses, subjecting the hexoses in the saccharification solution to an ethanol fermentation using a yeast capable of converting the hexoses into ethanol, removing the ethanol in the obtained primary fermentation solution in a state holding temperature of
    • 要解决的问题:提供一种生产乙醇的方法,其包括用酵母发酵含有己糖和起始于生物质的戊糖的糖化溶液,由此可以充分提高乙醇的产率。 解决方案:生产乙醇的方法包括以生物质的干重为基准处理蛋白质含量为1.5〜12质量%的生物质,并用氨水溶纤维素,水解得到的改性生物质,得到含有己糖的糖化溶液, 戊糖,使糖酵解溶液中的己糖进行乙醇发酵,使用能够将己糖转化为乙醇的酵母,在保持温度<60℃的状态下将得到的一次发酵液中的乙醇除去,得到乙醇浓度≤ 4%(W / V),然后使用能够将戊糖转化成乙醇的酵母,将乙醇除去乙醇发酵后的一次发酵液进行乙醇发酵,得到二次发酵液。 版权所有(C)2011,JPO&INPIT