Ethanol production from non-detoxified whole slurry of sulfite-pretreated empty fruit bunches at a low cellulase loading

Jinlan Cheng, Shao Yuan Leu, J. Y. Zhu, Thomas W. Jeffries

Research output: Journal article publicationJournal articleAcademic researchpeer-review

24 Citations (Scopus)


Sulfite pretreatment to overcome the recalcitrance of lignocelluloses (SPORL) was applied to an empty fruit bunches (EFB) for ethanol production. SPORL facilitated delignification through lignin sulfonation and dissolution of xylan to result in a highly digestible substrate. The pretreated whole slurry was enzymatically saccharified at a solids loading of 18% using a relatively low cellulase loading of 15. FPU/g glucan and simultaneously fermented without detoxification using Saccharomyces cerevisiae of YRH400. An ethanol yield of 217. L/tonne EFB was achieved at titer of 32. g/L. Compared with literature studies, SPORL produced high ethanol yield and titer with much lower cellulase loading without detoxification.
Original languageEnglish
Pages (from-to)331-337
Number of pages7
JournalBioresource Technology
Publication statusPublished - 1 Jan 2014


  • Empty fruit bunches (EFB)
  • Fermentation
  • High solids enzymatic hydrolysis/saccharification
  • High titer ethanol
  • Pretreatment

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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