检索结果-南通市图书馆

Biodegradation of Crystal Violet by Agrobacterium radiobacter

Journal of Environmental sciences 2011年第8期23卷 1384-1393页

作者： G.K.parshetti s.G.parshetti A.A.Telke D.C.Kalyani R.A.Doong s.p.govindwar Department of Biomedical Engineering and Environmental sciences National Tsinghua University Division of Applied Life sciences Gyeongsang National University Division of Chemical Engineering Konkuk University Department of Biochemistry Shivaji University

Agrobacterium radiobacter MTCC 8161 completely decolorized the Crystal Violet with 8 hr （10 mg/L） at static anoxic conditions. The decreased decolorization capability by A. radiobacter was observed, when the Crystal Violet concentration was increased from 10 to 100 mg/L. semi-synthetic medium containing 1% yeast extract and 0.1% NH4C1 has shown 100% decolorization of Crystal Violet within 5 hr. A complete degradation of Crystal Violet by A. radiobacter was observed up to 7 cycles of repeated addition （10 rag/L）. When the effect of increasing inoculum concentration on decolorization of Crystal Violet （100 mg/L） was studied, maximum decolorization was observed with 15% inoculum concentration. A significant increase in the activities of laccase （184%） and aminopyrine N-demethylase （300%） in cells obtained after decolorization indicated the involvement of these enzymes in decolorization process. The intermediates formed during the degradation of Crystal Violet were analyzed by gas chromatography and mass spectroscopy （GC/Ms）. It was detected the presence of N,N,N＇,N＂-tetramethylpararosarfiline, IN, N-dimethylaminophenyl] [N-methylaminophenyl] benzophenone, N, N-dimethylaminobenzaldehyde, 4-methyl amino phenol and phenol. We proposed the hypothetical metabolic pathway of Crystal Violet biodegradation by A. radiobacter. phytotoxicity and microbial toxicity study showed that Crystal Violet biodegradation metabolites were less toxic to bacteria （A. radiobacter, p. aurugenosa and A. vinelandii） contributing to soil fertility and for four kinds of plants （sorghum bicolor, Vigna radiata, Lens culinaris and Triticum aestivum） which are most sensitive, fast growing and commonly used in Indian agriculture.

关键词： Agrobacterium radiobacter Crystal Violet biodegradation gas chromatography and mass spectroscopy toxicity study

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

引用

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

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

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

引用

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

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：