Laccase activities of a soil fungus Penicillium simplicissimum in relation to lignin degradation |
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Authors: | Guang Ming Zeng Hong Yan Yu Hong Li Huang Dan Lian Huang Yao Ning Chen Guo He Huang Jian Bing Li |
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Affiliation: | (1) Department of Environmental Science and Engineering, Hunan University, 410082 Changsha, China;(2) Faculty of Engineering, University of Regina, S4S 0A2 Regina, Canada |
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Abstract: | Summary The laccase activities of Penicillium simplicissimum H5 during solid-state fermentation with rice straw were studied. Degradation of lignocellulose was also followed. Results showed that all supplemental carbon sources inhibited the laccase activity in different degrees, while suitable concentrations of supplemental nitrogen sources remarkably enhanced the laccase activity. The enhancement of activity by the ordinary laccase inducers 2, 2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid) and xylidine was not observed in this study. Lignocellulose degradation was improved when laccase activity was relatively low, suggesting a polymerizing function of laccase in lignin degradation by P. simplicissimum. |
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Keywords: | Laccase lignin lignocellulose Penicillium simplicissimum solid-state fermentation |
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