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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Growth, dye degradation and ligninolytic activity studies on Zimbabwean white rot fungi
Enzyme and Microbial Technology, Volume 28, No. 4-5, Year 2001
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Description
White rot fungi were collected from Chirinda and Chimanimani hardwood forests in Zimbabwe and studied with respect to growth temperature optima and dye decolorization. Temperature optima were found to vary (between 25-37°C) amongst the isolates. The isolates were screened for their ability to degrade the polymeric dyes; blue dextran and Poly R478 and the triphenylmethane dyes; cresol red, crystal violet and bromophenol blue. Semi-quantitative determination of the hydrolytic enzyme activities possessed by the white rot fungi was determined using the API ZYM system. Lignin peroxidase (LiP), manganese peroxidase (MnP) and laccase activities in the fungi were also determined. No LiP was detected in any of the isolates but all isolates showed manganese peroxidase and laccase activities. Time related decolorization studies and optimum pH determinations for Poly R478 degradation by the isolates were carried out in liquid cultures. The most significant rates of Poly R478 decolorization in liquid cultures were found with the following isolates: Trametes cingulata, Trametes versicolor, Trametes pocas, DSPM95 (a species to be identified), Datronia concentrica and Pycnoporus sanguineus. © 2001 Elsevier Science Inc.
Authors & Co-Authors
Tekere, Memory
Zimbabwe, Harare
University of Zimbabwe
Mswaka, Allen Y.
Zimbabwe, Harare
University of Zimbabwe
Zvauya, Remigio
Zimbabwe, Harare
University of Zimbabwe
Read, John S.
Zimbabwe, Harare
University of Zimbabwe
Statistics
Citations: 154
Authors: 4
Affiliations: 1
Identifiers
Doi:
10.1016/S0141-0229(00)00343-4
ISSN:
01410229
Study Approach
Quantitative
Study Locations
Zimbabwe