Novel high butanol production from lactic acid and pentose by Clostridium saccharoperbutylacetonicum

Tsuyoshi Yoshida, Yukihiro Tashiro, Kenji Sonomoto

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We previously reported a butanol production process with pH-stat continuous feeding of dl-lactic acid and glucose as the co-substrate (Oshiro et al., Appl. Microbiol. Biotechnol., 87, 1177-1185, 2010). To accomplish butanol production from completely inedible substrates, in this study, we investigated acetone-butanol-ethanol (ABE) fermentation of Clostridium saccharoperbutylacetonicum N1-4 with lactic acid by using pentose as the co-substrate. Examination for optimum co-substrate indicated that arabinose was superior to glucose and xylose for ABE fermentation. Actually batch culture with lactic acid and arabinose without pH control exhibited higher butanol production (7.11 g/l) and lactic acid consumption (2.02 g) than those (6.62 g/l and 1.45 g, respectively) with glucose. Fed-batch culture without pH control increased these values to 12.08 g/l and 15.60 g/l butanol production, and to 3.83 g and 5.91 g lactic acid consumption by feeding the substrate once and twice, respectively. Finally, the result of gas chromatography-mass spectroscopy analysis using [1,2,3-13C3]-lactic acid indicated that lactic acid was converted to butanol with the efficiency of 51.9%. Thus, we established a novel high butanol production from lactic acid using arabinose as the co-substrate in simple fed-batch culture.

Original languageEnglish
Pages (from-to)526-530
Number of pages5
JournalJournal of Bioscience and Bioengineering
Volume114
Issue number5
DOIs
Publication statusPublished - Nov 1 2012

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

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