Applied Biochemistry and Biotechnology

, Volume 165, Issue 7, pp 1754–1769

Screening and Production of Ligninolytic Enzyme by a Marine-Derived Fungal Pestalotiopsis sp. J63

  • Hui-Ying Chen
  • Dong-Sheng Xue
  • Xiao-Yu Feng
  • Shan-Jing Yao
Article

DOI: 10.1007/s12010-011-9392-y

Cite this article as:
Chen, HY., Xue, DS., Feng, XY. et al. Appl Biochem Biotechnol (2011) 165: 1754. doi:10.1007/s12010-011-9392-y
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Abstract

Marine-derived fungi are prone to produce structurally unique secondary metabolites, a considerable number of which display the promising biological properties and/or industrial applications. Among those, ligninolytic enzymes have attracted great interest in recent years. In this work, about 20 strains were isolated from sea mud samples collected in the East China Sea and then screened for their capacity to produce lignin-degrading enzymes. The results showed that a strain, named J63, had a great potential to secrete a considerable amount of laccase. Using molecular method, it was identified as an endophytic fungus, Pestalotiopsis sp. which was rarely reported as ligninolytic enzyme producer in the literature. The production of laccase by Pestalotiopsis sp. J63 was investigated under submerged fermentation (SF) and solid state fermentation (SSF) with various lignocellulosic by-products as substrates. The SSF of rice straw powder accumulated the highest level of laccase activity (10,700 IU/g substrate), whereas the SF of untreated sugarcane bagasse provided the maximum amount of laccase activity (2,000 IU/ml). The value was far higher than those reported by other reports. In addition, it produced 0.11 U/ml cellulase when alkaline-pretreated sugarcane bagasse was used as growth substrate under SF. Meanwhile, the growth of fungi and laccase production under different salinity conditions were also studied. It appeared to be a moderately halo-tolerant organism.

Keywords

Marine-derived fungi Laccase Salinity Submerged fermentation Solid state fermentation 

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Hui-Ying Chen
    • 1
  • Dong-Sheng Xue
    • 1
  • Xiao-Yu Feng
    • 1
  • Shan-Jing Yao
    • 1
  1. 1.Department of Chemical and Biological EngineeringZhejiang UniversityHangzhouChina

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