As early as the 1960s, someone proposed the fermentation pulping method, but due to the lack of basic research and other reasons, the research on microbial pulping has not made a breakthrough for a long time. In recent years, a large number of basic researches have been carried out on lignin biodegradation in the world (2). Many strains that can degrade lignin have been found, and some lignin degrading enzymes have been isolated and purified. Although these bacteria and enzymes can reduce energy consumption and pollution when used in pulping, due to the long period of microbial treatment, the enzymes produced are formed in the evolution of microorganisms, which are often not suitable for the requirements of pulping and papermaking process. Therefore, the research of microbial pulping mainly focuses on the screening of microbial species, degradation process and degradation mechanism.<br>Compared with the research of microbial pulping, the research work of microbial bleaching is more concentrated, mainly focusing on xylanase and laccase, especially on xylanase.<br>
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