Research progress in the production of cellulosic ethanol via consolidated bioprocessing
The escalation of the global energy crisis has made the development of renewable alternative fuels even more urgent.Consolidated bioprocessing(CBP)is a bioprocessing technology that integrates pre-treatment,cellulase production,cellulose hydrolysis and saccharification,and hexose and pentose fermentation to produce ethanol.It is the most promising and efficient low-cost strategy for degrading lignocellulosic biomass to produce cellulose ethanol.Starting from the research on bacteria and fungi in the production of cellulose ethanol from CBP,this article reviews the development process of cellulose ethanol industrialization.This article expounds four different strategies in the consolidated bioprocessing process,including single bacterial CBP system,natural microbial community,composite microbial community,and microbial metabolic engineering transformation.It systematically summarizes the types,fermentation metabolic characteristics,and engineering and co-cultivation strategies of CBP chassis bacteria and fungi reported in domestic and foreign literature,and discusses their research cases and development status.This article provides theoretical basis for the breeding of new functional strains and the development of non-grain biofuels.
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