Biotechnology Bulletin ›› 2020, Vol. 36 ›› Issue (4): 144-150.doi: 10.13560/j.cnki.biotech.bull.1985.2019-0888

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Research Progress on Low Temperature Straw-degrading Compound Microbial Agent

GAO Xing-ai, WANG Xin, XIE Jiao, WANG Fei-hu, GONG Yu-xuan, GUAN Fa-chun, LI Zhong-he   

  1. Institute of Rural Energy and Ecology,Jilin Academy of Agricultural Sciences,Changchun 130033
  • Received:2019-09-23 Online:2020-04-26 Published:2020-04-30

Abstract: In northeast China,it is cold in winter and the straw yield is huge,but the comprehensive utilization rate is low. It is an effective way to recycle the straw by using microorganisms with high enzyme activity to degrade the straw in the low temperature environment. The results show that it is the best way to improve the rate of degradation and the utilization of straw resources via screening strains with high enzyme activity,further studying the degradation mechanism,optimizing the culture conditions of functional microorganisms and thus enhancing cellulase activity. The enzyme activity produced by the compound microbial agent is generally higher than that of single microorganism,and the enzyme activity produced by fungal mycelium is higher than that by bacteria. In practical application,choosing suitable compound bacterial agent is an effective way to improve the degradation efficiency of straw under low temperature environment. This paper systematically summarizes the microbial technology of straw degradation under low temperature condition,analyzes the strain types of degrading straw under different conditions understands the activity characteristics of bacteriological enzymes to promote straw cellulose degradation,sums up the application effects of biobacteriological agents on straw degradation under low temperature condition,aiming to provide some technical references for straw recycling in low temperature environment.

Key words: low temperature, straw degradation, compound microbial agent, application technology