Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
680841 | Bioresource Technology | 2014 | 4 Pages |
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, 46.12Â g LA could be produced from 100Â g dry wheat straw with a supplement of 10Â g/L corn steep liquid powder at the cellulase loading of 20Â FPU (filter paper activity units)/g cellulose. The process by B. coagulans IPE22 provides an economical route to produce LA from lignocellulose.
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Authors
Yuming Zhang, Xiangrong Chen, Jianquan Luo, Benkun Qi, Yinhua Wan,