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Optimal strategy for ethanol production in repeated fed-batch operation using flocculent Sacchromyces cerevisiae

초록

영어

We investigated the optimal strategy for ethanol production using flocculent Sacchromyces cerevisiae ATCC 96581. Considering the characteristic of flocculent yeast, a repeated fed-batch ethanol fermentation was designed, in which non-sterile glucose powder was fed every 12 hours and, after cell flocculation, new feeding medium was exchanged every 24 or 36 hours. We particularly compared this fermentation process with those when cell flocculation was not carried out. Finally, the maximal total ethanol production was 825 g-ethanol during 120 hours, in which the time interval of withdrawal-fill of feeding medium was 24 hours and cell flocculation was carried out.

저자정보

  • Sang-Eun LEE Department of Biotechnology, Chungju National University, Jeungpyung, Chungbuk 368-701.
  • Ji-Hyeon YEON Department of Biotechnology, Chungju National University, Jeungpyung, Chungbuk 368-701.
  • Yong Chang SEO Division of Biomaterials Engineering, Kangwon National University, Chuncheon 200-701.
  • Do Hyung KANG Korea Ocean Research & Development Institute, Ansan, Gyeonggi-do 426-744.
  • Hyeon-Yong LEE Division of Biomaterials Engineering, Kangwon National University, Chuncheon 200-701.
  • Kyung-Hwan JUNG Department of Biotechnology, Chungju National University, Jeungpyung, Chungbuk 368-701.

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