Conversion of extracted oil cake fibers into bioethanol including DDGS, canola, sunflower, sesame, soy, and peanut for integrated biodiesel processing

Venkatesh Balan, Chad A. Rogers, Shishir P.S. Chundawat, Leonardo Da Costa Sousa, Patricia J. Slininger, Rajesh Gupta, Bruce E. Dale

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

We have come up with a novel, integrated approach for making biodiesel by in-house producion of ethanol after fermentation of hexane extracted edible oil cake fiber. In addition, we have demonstrated how ethanol could be manufactured from commonly available oil cakes (such as canola, sunflower, sesame, soy, peanut) and dried distiller's grains with solubles (DDGS). The edible oil cakes and DDGS were hexane extracted, ammonia fiber expansion pretreated, enzymatically hydrolysed and fermented to produce ethanol. From all the oil cakes tested in this work, DDGS and peanut oil cake showed the most promising results giving more than 180 g of glucose/kg of oil cake. These two feedstock's were hydrolyzed at 15% solids loading and fermented by a native strain of Pichia stipitis. Most sugars were consumed during the first 24 h, with no pronounced inhibition of P. stipitis by the degradation products in the hydrolysate. Xylose consumption was more effective for peanut cake hydrolyzate compared to DDGS.

Original languageEnglish (US)
Pages (from-to)157-165
Number of pages9
JournalJAOCS, Journal of the American Oil Chemists' Society
Volume86
Issue number2
DOIs
Publication statusPublished - Feb 1 2009
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Organic Chemistry

Keywords

  • AFEX pretreatment
  • Biodiesel
  • Bioethanol
  • Edible oil cake
  • Enzymatic hydrolysis

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