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Decoloration of Amaranth by the white-rot fungus Trametes versicolor. Part I. Statistical analysis

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The white-rot fungus Trametes versicolor decolorized the mono-azo-substituted naphthalenic dye Amaranth. The relationship between the amount of enzymes present in the system and the efficiency of the decoloration process was investigated. The two responses used to quantify the process of decoloration (i.e., initial decoloration rate, v0, and the percent concentration of dye decolorized in 1 h, %c) were correlated with the amount of three enzymes considered for the study (lignin peroxidase, manganese peroxidase, and laccase) and analyzed through stepwise regression analysis (forward, backward, and mixed). The results of the correlation analysis and those of the regression analysis indicated that lignin peroxidase is the enzyme having the greatest influence on the two responses.

Le champignon Trametes versicolor, responsable de la pourriture blanche, décolore l’Amaranthe, un colorant naphtalénique mono-azo substitué. La relation entre la quantité d’enzymes présentes dans le système et l’efficacité du processus de décoloration a été investigué. Les deux réponses utilisées pour quantifier le processus de décoloration (le taux de décoloration initiale, v0, et le pourcentage de concentration de colorant décoloré en 1 heure, % c) ont été corrélées avec la quantité des trois enzymes considérées dans l’étude (la lignine peroxydase, la manganèse peroxydase et la laccase) et analysées par une régression par étape (ascendante, descendante et mixte). Les résultats des analyses de corrélation et de régression ont indiqué que la lignine peroxydase est l’enzyme ayant le plus d’influence sur les deux réponses.

Document Type: Research Article

Publication date: February 1, 2007

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  • Published since 1954, this monthly journal contains new research in the field of microbiology including applied microbiology and biotechnology; microbial structure and function; fungi and other eucaryotic protists; infection and immunity; microbial ecology; physiology, metabolism and enzymology; and virology, genetics, and molecular biology. It also publishes review articles and notes on an occasional basis, contributed by recognized scientists worldwide.
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