News Column

Study Results from University of Illinois Broaden Understanding of Ethanol (Vacuum Stripping of Ethanol during High Solids Fermentation of Corn)

July 1, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Ethanol have been published. According to news reporting out of Urbana, Illinois, by NewsRx editors, research stated, "In corn-ethanol industry, yeast stress inducing glucose concentrations produced during liquefaction and subsequent high ethanol concentrations produced during fermentation restrict slurry solids to 32 % w/w. These limits were circumvented by combining two novel technologies: (1) granular starch hydrolyzing enzyme (GSHE) to break down starch simultaneously with fermentation and (2) vacuum stripping to remove ethanol."

Our news journalists obtained a quote from the research from the University of Illinois, "A vacuum stripping system was constructed and applied to fermentations at 30, 40, and 45 % solids. As solids increased from 30 to 40 %, ethanol yield decreased from 0.35 to 0.29 L/kg. Ethanol yield from 45 % solids was only 0.18 L/kg. An improvement was conducted by increasing enzyme dose from 0.25 to 0.75 g/g corn and reducing yeast inoculum by half."

According to the news editors, the research concluded: "After improvement, ethanol yield from 40 % solids vacuum treatment increased to 0.36 L/kg, comparable to ethanol yield from 30 % solids (control)."

For more information on this research see: Vacuum Stripping of Ethanol during High Solids Fermentation of Corn. Applied Biochemistry and Biotechnology, 2014;173(2):486-500. Applied Biochemistry and Biotechnology can be contacted at: Humana Press Inc, 999 Riverview Drive Suite 208, Totowa, NJ 07512, USA. (Springer -; Applied Biochemistry and Biotechnology -

Our news journalists report that additional information may be obtained by contacting J.K. Shihadeh, University of Illinois, Urbana, IL 61802, United States. Additional authors for this research include H.B. Huang, K.D. Rausch, M.E. Tumbleson and V. Singh (see also Ethanol).

Keywords for this news article include: Urbana, Illinois, Alcohols, United States, Ethanolamines, North and Central America

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC

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Source: Life Science Weekly

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