Exploring the inhibitory characteristics of acid hydrolysates upon butanol fermentation: A toxicological assessment

Yue Wang, Wanqian Guo, Bor Yann Chen, Chieh Lun Cheng, Yung Chung Lo, Shih Hsin Ho, Jo Shu Chang, Nanqi Ren

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

This study aimed to quantitatively evaluate the inhibitor tolerance of butanol-producing bacterium Clostridium acetobutylicum. The inhibitory effect of the inhibitors generated by acid pretreatment of biomass feedstock on butanol fermentation decreased in the order of formic acid > oxalic acid > furfural > 5-HMF > Na2SO4. C. acetobutylicum has a small tolerance range for furfural (1.06-2.6g/L) and 5-HMF (1.99-2.3g/L). However, the inhibitory effect of Na2SO4 appears to have a wide range, with a chronic toxicity for C. acetobutylicum. All the results could explain, in quantitative manner, the instability of butanol fermentation with C. acetobutylicum from various acid-pretreated feedstocks caused by the fermentation inhibitors.

Original languageEnglish
Pages (from-to)571-576
Number of pages6
JournalBioresource technology
Volume198
DOIs
Publication statusPublished - 2015 Dec 1

All Science Journal Classification (ASJC) codes

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

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