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

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논문

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

학술지

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

저자명

Zhang, Y.; Chen, X.; Luo, J.; Qi, B.; Wan, Y.

초록

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, 46.12g LA could be produced from 100g dry wheat straw with a supplement of 10g/L corn steep liquid powder at the cellulase loading of 20FPU (filter paper activity units)/g cellulose. The process by B. coagulans IPE22 provides an economical route to produce LA from lignocellulose.

발행연도

2014

발행기관

Elsevier Applied Science

ISSN

0960-8524

권

158

페이지

pp.396-399

DOI

10.1016/j.biortech.2014.02.128