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Differential fate of metabolism of a disperse dye by microorganisms Galactomyces geotrichum and Brevibacillus laterosporus and their consortium GG-BL

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Journal of Environmental Sciences 2012年第7期24卷 1295-1304页

作者： Tatoba R.Waghmode Mayur B.Kurade Anuradha N.Kagalkar sanjay p.govindwar Department of Biochemistry Shivaji University Department of Biotechnology Shivaji University

The present work aims to evaluate Brown 3 REL degrading potential of developed microbial consortium GG-BL using two microbial cultures, Galactomyces geotrichum MTCC 1360 （GG） and BrevibaciUus laterosporus MTCC 2298 （BL）. Microbial consortium GG-BL showed 100% decolorization of a dye Brown 3 REL, while individually G. geotrichum MTCC 1360 and B. laterosporus MTCC 2298 showed 26% and 86% decolorization under aerobic condition （shaking） respectively. Measurements of biochemical oxygen demand （BOD）（76%） and chemical oxygen demand （COD）（68%） were done after decolorization by consortium GG-BL. No induction in activities of oxidoreductive enzymes found in G. geotrichum while B. laterosporus showed induction of veratryl alcohol oxidase, Nicotineamide adenine dinucleotide-dichlorophenol indophenol （NADH-DCIp） reductase and riboflavin reductase indicating their role in dye metabolism. Consortium GG-BL showed induction in the activities of laccase, veratryl alcohol oxidase, tyrosinase, NADH-DCIp reductase and riboflavin reductase. Two different sets of induced enzymes from G. geotrichum and B. laterosporus work together in consortium GG-BL resulting in faster degradation of dye. The degradation of Brown 3 REL was analyzed using high performance thin layer chromatography （HpTLC）, high performance liquid chromatography （HpLC）, Fourier transform infrared spectroscopy （FT-IR） and gas chromatography mass spectroscopy （GC-MS）. phytotoxicity study revealed that metabolites formed after degradation was significantly less toxic in nature.

关键词： consortium GG-BL decolorization Brown 3 REL biochemical oxygen demand laccase biodegradation

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Enhanced enzymatic removal of anthracene by the mangrove soil-derived fungus,Aspergillus sydowii BpOI

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Frontiers of Environmental Science & Engineering 2020年第6期14卷 223-235页

作者： paul Olusegun Bankole Kirk Taylor Semple Byong-Hun Jeon sanjay prabhu govindwar Department of pure and Applied Botany College of BiosciencesFederal University of Agriculture AbeokutaOgun State 234039Nigeria Lancaster Environment Centre Lancaster UniversityLancaster LAI 4YQUK Department of Earth Resources and Environmental Engineering Hanyang UniversitySeoul 04763Republic of Korea

The present study investigated the efficiency of Aspergillus sydowii strain bpol(GenBank Accession Number:MK373021)in the removal of anthracene(100 mg/L).Optimal degradation efficiency(98.7%)was observed at neutral pH,temperature(30℃),biomass weight(2 g)and salinity(0.2%w/v)within 72 *** enzyme analyses revealed 131%,107%,and 89%induction in laccase,lignin peroxidase,and manganese peroxidase respectively during anthracene ***,the degradation efficiency(99.8%)and enzyme induction were significantly enhanced with the addition of 100 mg/L of citric acid and glucose to the *** varying anthracene concentrations(100-500 mg/L),the degradation rate constants(K1)peaked with increasing concentration of anthracene while the half-life(t1/2)decreases with increase in anthracene *** of fit(R2=0.976 and 0.982)was observed when the experimental data were subjected to Langmuir and Temkin models respectively which affirmed the monolayer and heterogeneous nature exhibited by *** cells during *** distinct metabolites;anthracene-1,8,9(2H,8aH,9aH)-trione,2,4adihydronaphthalene-1,5-dione,l,3,3a,7a-tetrahydro-2-benzofuran-4,7-dione and 2-hydroxybenzoic acid was obtained through Gas Chromatography-Mass spectrometry(GC-MS).*** exhibited promising potentials in the removal of pAHs.

关键词： Aspergillus sydowii Anthracene Biodegradation polycyclic aromatic hydrocarbons

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