An efficient process for lactic acid production from wheat straw by a newly isolated Bacillus coagulans strain IPE22

Yuming Zhang, Xiangrong Chen, Jianquan Luo, Benkun Qi, Yinhua Wan

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A thermophilic lactic acid (LA) producer was isolated and identified as Bacillus coagulans strain IPE22. The strain showed remarkable capability to ferment pentose, hexose and cellobiose, and was also resistant to inhibitors from lignocellulosic hydrolysates. Based on the strain’s promising features, an efficient process was developed to produce LA from wheat straw. The process consisted of biomass pretreatment by dilute sulfuric acid and subsequent SSCF (simultaneous saccharification and co-fermentation), while the operations of solid–liquid separation and detoxification were avoided. Using this process, 46.12 g LA could be produced from 100 g dry wheat straw with a supplement of 10 g/L corn steep liquid powder at the cellulase loading of 20 FPU (filter paper activity units)/g cellulose. The process by B. coagulans IPE22 provides
an economical route to produce LA from lignocellulose
Original languageEnglish
JournalBioresource Technology
Volume158
Pages (from-to)396–399
ISSN0960-8524
DOIs
Publication statusPublished - 2014

Keywords

  • Lactic acid
  • SSCF
  • Bacillus coagulans
  • Wheat straw
  • Hemicellulosic hydrolysates

Fingerprint Dive into the research topics of 'An efficient process for lactic acid production from wheat straw by a newly isolated Bacillus coagulans strain IPE22'. Together they form a unique fingerprint.

Cite this