Ethanol yield calculation method - "An unaccounted factor" responsible for yield variations

Deepak Kumar, Kaylin Moy, Vijay Singh

Research output: Contribution to conferencePaperpeer-review


Bioethanol is considered as a promising alternative to petroleum as a transportation fuel. The ethanol production from corn involves converting starch to glucose, followed by fermenting glucose to ethanol by yeast. The ethanol concentration at the end of fermentation can be determined using chemical assays or chromatography techniques. However, calculations of ethanol yields (L/kg corn) is challenging because of difficulty in measuring exact liquid volume at the end of fermentation. Various theoretical and experimental approaches have been used in literature to calculate the ethanol yields. The objective of this work was to demonstrate the variation in the ethanol yield calculated using different methods, and need to identify a comprehensive and reliable approach. This paper discusses various methods reported in the literature and also present a new theoretical method to calculate ethanol yields. Ethanol yields obtained from the new method were similar to those obtained using comprehensive experimental approaches.

Original languageEnglish (US)
StatePublished - 2017
Event2017 ASABE Annual International Meeting - Spokane, United States
Duration: Jul 16 2017Jul 19 2017


Other2017 ASABE Annual International Meeting
Country/TerritoryUnited States


  • Bioethanol
  • Dry grind
  • Fermentation efficiency
  • Yields

ASJC Scopus subject areas

  • Bioengineering
  • Agronomy and Crop Science


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