Research progress of biological decomposition lignin
Microorganisms play an important role in the degradation of lignin.The structural characteris-tics of lignin,the latest development of microbial species(including fungi,actinomycetes,and bacteria),key enzymes(laccase,lignin peroxidase,manganese peroxidase,versatile peroxidase,dye-decolorizing per-oxidases,etc.)and mechanism of lignin degradation by the key enzymes,and synthesized high value-add-ed products(including lipids,polyhydroxyalkanoates,vanillin,and feed,etc.)are reviewed.However,the degradation rate of lignin is still relatively low,which greatly limits its application.Some efficient methods are proposed for improving the degradation efficiency and transformation efficiency of lignin,including ge-netic engineering and metabolic engineering technologies.The main aim is to provide theoretical support for the comprehensive utilization of lignin.
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