Enhanced butyric acid production using mixed biomass of brown algae and rice straw by Clostridium tyrobutyricum ATCC25755

Hyun Ju Oh, Ki Yeon Kim, Kyung Min Lee, Sun Mi Lee, Gyeongtaek Gong, Min-Kyu Oh, Youngsoon Um

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A brown alga Saccharina japonica and rice straw are attractive feedstock for microbial butyric acid production. However, inefficient fermentation of mannitol (a dominant component in S. japonica) and toxicity of inhibitors in lignocellulosic hydrolysate are limitations. This study demonstrated that mixed biomass with S. japonica and rice straw was effective in butyric acid production over those restrictions. Mannitol was consumed only when acetic acid was present. Notably, acetic acid was not produced but consumed along with mannitol. By mixing S. japonica and rice straw to take advantage of glucose and acetic acid in rice straw, Clostridium tyrobutyricum effectively consumed mannitol by utilizing acetic acid in hydrolysate and acetic acid derived from glucose with the enhanced butyric acid production. Furthermore, cell growth was restored owing to the decreased inhibitor concentration. The results demonstrate the potential of butyric acid production from mixed biomass of macroalgae/lignocellulose overcoming the drawbacks of single biomass.

Original languageEnglish
Pages (from-to)446-453
Number of pages8
JournalBioresource Technology
Volume273
DOIs
Publication statusPublished - 2019 Feb 1

Keywords

  • Brown algae
  • Butyric acid
  • Clostridium tyrobutyricum
  • Laminaria japonica
  • Rice straw
  • Saccharina japonica

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Enhanced butyric acid production using mixed biomass of brown algae and rice straw by Clostridium tyrobutyricum ATCC25755'. Together they form a unique fingerprint.

  • Cite this