ISSN: 0973-7510
E-ISSN: 2581-690X
A mutant of Phanerochaete chrysosporium (P. chrysosporium), which is capable of degrading lignin, was bred by ultraviolet ray irradiation and this mutant strain shows high capability of degrading of lignite. The degradation ratio of original Yima lignite and nitric acid treated Yima lignite by this mutant are 37.6 % and 51.62 % respectively, whereas those by the original strain are 31.84 % and 32.55 % respectively. The degradation products were characterized by X-ray diffractograms analysis (XRD), Fourier transmission infrared (FTIR) and the thermogravimetric analysis (TG). The results show that the polymerization degree of the aromatic nucleus and the molecular weights of products are decreased obviously, and the contents of the functional groups are remarkable changed compared with the original lignite.
Phanerochaete chrysosporium, Ultraviolet, Mutation breeding, Biodegradation
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