Bio-solubilization of Chinese lignite I: extra-cellular protein analysis

A white rot fungus strain, Trichoderma sp. AH, was isolated from rotten wood in Fushun and used to study the mechanism of lignite bio-solubilization. The results showed that nitric acid pretreated Fushun lignite was solubilized by T. sp. AH and that extracellular proteins from T. sp. AH were correla...

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Bibliographic Details
Published in:Mining science and technology (China) 2009-05, Vol.19 (3), p.358-362
Main Authors: TAO, Xiu-xiang, PAN, Lan-ying, SHI, Kai-yi, CHEN-hui, YIN, Su-dong, LUO, Zhen-fu
Format: Article
Language:English
Subjects:
bio-solubilization
color reaction
extracellular proteins
lignite
white rot fungi
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Summary:A white rot fungus strain, Trichoderma sp. AH, was isolated from rotten wood in Fushun and used to study the mechanism of lignite bio-solubilization. The results showed that nitric acid pretreated Fushun lignite was solubilized by T. sp. AH and that extracellular proteins from T. sp. AH were correlated with the lignite bio-solubilization results. In the presence of Fushun lignite the extracellular protein concentration from T. sp. AH was 4.5 g/L while the concentration was 3 g/L in the absence of Fushun lignite. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) of the extracellular proteins detected at least four new protein bands after the T. sp. AH had solubilized the lignite. Enzyme color reactions showed that extracellular proteins from T. sp. AH mainly consisted of phenol-oxidases, but that lignin decomposition enzymes such as laccase, peroxidase and manganese peroxidases were not present.
ISSN:1674-5264
2212-6066
DOI:10.1016/S1674-5264(09)60067-3