Biotechnology Bulletin ›› 2017, Vol. 33 ›› Issue (10): 97-102.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0417

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Research Progress on Substrate Species Degraded by Laccase

ZHANG Ze-xiong, LIU Hong-yan, XING He, MA Yu   

  1. College of Chemistry and Bioengineering,Guilin University of Technology,Guilin 541004
  • Received:2017-05-22 Online:2017-10-29 Published:2017-10-29
  • Contact: 刘红艳,女,副教授,研究方向:生物化学与环境污染物化学;E-mail:lhyglite@126.com

Abstract: Laccase,a polyphenol oxidase that binds multiple copper ions,is widely found in plants and fungi. Laccase contains unique copper ions which function is to transfer electrons in the structure,so that the laccase has a strong redox capacity,and the only product of the most reactions with lignin,amine compounds,aromatic compounds such as the role of the substrate is water. It has the characteristics of high efficiency and low cost in the degradation of many toxic substances and harmful pollutants,such as white rot fungi produced by the high level of laccase has been widely used in industrial wastewater treatment and other biological remediation and repair areas. In recent years,the lastest research showed that the using of vector immobilized enzyme technology allows laccase to be recycled after use and reused and more stable,which reduces costs while maintains the characteristics of laccase catalytic oxidation,it has overcome the problems of laccases in solving environmental pollution,Under the mediating effect of mediator,the problem of low potential of laccase redox has been figured out,and it greatly increased more kinds of substrate. Therefore,the application prospects in wastewater,degradation,soil remediation,industrial bleaching and other fields will be much broader. This paper summarily describes the applications of laccase in various fields and the types of harmful pollutions substrates,put forward the deficiency and the improving direction of existing degradation process of laccase aiming at providing the reference for the study of biodegradation of environmental pollutants.

Key words: laccase, substrate, environmental pollutant