Biotechnology Letters

, Volume 4, Issue 12, pp 809–814 | Cite as

Temperature effects in ethanol fermentation high corn media

  • Jack Ziffer
  • Mario I. Iosif
Article

Summary

A relationship between temperature and high ethanol yields has been found using whole corn mashes saccharified with Aspergillus oryzae wheat bran koji. Decreased ethanol yields were obtained at 34.5°C with high concentration corn mashes in contrast to high ethanol yields with the same medium at lower temperatures. The decreased yields appear to be related to mass and/or heat transfer problems rather than primary ethanol toxicity. Scale-up of the high corn medium will require a re-evaluation of alcohol fermentation technology.

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Copyright information

© Science and Technology Letters 1981

Authors and Affiliations

  • Jack Ziffer
    • 1
  • Mario I. Iosif
    • 1
  1. 1.Department of Food Engineering and BiotechnologyThe TechnionHaifaIsrael

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