Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Biodegradation of Malachite Green by the Ligninolytic Fungus Aspergillus flavus
The azo class of synthetic dyes represents one of the most industrially used dyes as well as a major class of environmental contaminants, which possess one or more azo bonds (NN) along with aromatic rings and sulfonic groups. Due to its recalcitrant nature and toxicity for animals and human beings, the elimination of these dyes from the environment is essential. The present study focuses on the biodegradation of such azo dye, malachite green (MG), through a potent ligninolytic fungus, Aspergillus flavus (F10). A. flavus (F10) completely decolorized MG (150 mg L−1) within 6–8 days in optimized Kirk's basal medium under static aerobic conditions at pH 5.8. Sucrose and sodium nitrate were efficient carbon and nitrogen sources, respectively. The products obtained after degradation were examined using UV‐vis spectrophotometry, Fourier transform IR spectroscopy, and liquid chromatography‐mass spectroscopy. The metabolic intermediate products were identified as N‐demethylated and N‐oxidized metabolites, including primary and secondary arylamines, which confirms the involvement of laccase and manganese peroxidase in decolorization and degradation of MG. The end products of MG degradation were nontoxic. A. flavus (F10), immobilized by entrapment on natural and synthetic polymeric matrices was found to be a more efficient degrader of MG as compared to free cells.
Biodegradation of Malachite Green by the Ligninolytic Fungus Aspergillus flavus
The azo class of synthetic dyes represents one of the most industrially used dyes as well as a major class of environmental contaminants, which possess one or more azo bonds (NN) along with aromatic rings and sulfonic groups. Due to its recalcitrant nature and toxicity for animals and human beings, the elimination of these dyes from the environment is essential. The present study focuses on the biodegradation of such azo dye, malachite green (MG), through a potent ligninolytic fungus, Aspergillus flavus (F10). A. flavus (F10) completely decolorized MG (150 mg L−1) within 6–8 days in optimized Kirk's basal medium under static aerobic conditions at pH 5.8. Sucrose and sodium nitrate were efficient carbon and nitrogen sources, respectively. The products obtained after degradation were examined using UV‐vis spectrophotometry, Fourier transform IR spectroscopy, and liquid chromatography‐mass spectroscopy. The metabolic intermediate products were identified as N‐demethylated and N‐oxidized metabolites, including primary and secondary arylamines, which confirms the involvement of laccase and manganese peroxidase in decolorization and degradation of MG. The end products of MG degradation were nontoxic. A. flavus (F10), immobilized by entrapment on natural and synthetic polymeric matrices was found to be a more efficient degrader of MG as compared to free cells.
Biodegradation of Malachite Green by the Ligninolytic Fungus Aspergillus flavus
Barapatre, Anand (Autor:in) / Aadil, Keshaw Ram (Autor:in) / Jha, Harit (Autor:in)
01.04.2017
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Biological synthesis of silver nanoparticles using the fungus Aspergillus flavus
| British Library Online Contents | 2007
ZnS semiconductor quantum dots production by an endophytic fungus Aspergillus flavus
| British Library Online Contents | 2016
Bioremediation of Chromium Complex Dye by Growing Aspergillus flavus
| Springer Verlag | 2018