Microbial tolerance engineering for boosting lactic acid production from lignocellulose

作者：Wen-Wen Shan, Yongli Yan, Yongda Li, Wei Hu, Jihong Chen · 发表于：Biotechnology for Biofuels and Bioproducts · 年份：2023 · DOI：10.1186/s13068-023-02334-y · 被引用次数：20 · 研究领域：Biofuel production and bioconversion、Microbial Metabolic Engineering and Bioproduction、Catalysis for Biomass Conversion

Lignocellulosic biomass is an attractive non-food feedstock for lactic acid production via microbial conversion due to its abundance and low-price, which can alleviate the conflict with food supplies. However, a variety of inhibitors derived from the biomass pretreatment processes repress microbial growth, decrease feedstock conversion efficiency and increase lactic acid production costs. Microbial tolerance engineering strategies accelerate the conversion of carbohydrates by improving microbial tolerance to toxic inhibitors using pretreated lignocellulose hydrolysate as a feedstock. This review presents the recent significant progress in microbial tolerance engineering to develop robust microbial cell factories with inhibitor tolerance and their application for cellulosic lactic acid production. Moreover, microbial tolerance engineering crosslinking other efficient breeding tools and novel approaches are also deeply discussed, aiming to providing a practical guide for economically viable production of cellulosic lactic acid.