Kinetic characteristics of bacterial azo-dye decolorization by Pseudomonas luteola

Chang, Jo Shu; Chou, C. Perry; Lin, Yu Chih; Lin, Peng; Ho, Jin Yen; Hu, Tai-Lee

doi:10.1016/s0043-1354(00)00581-9

Cited by 407 publications

(193 citation statements)

References 24 publications

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“…The results obtained in Table 1 showed that the bacterial consortium was able to utilize most of the carbon sources tested, except Glucose, whereas sucrose instigated maximum decolorization efficiency after 24 h of incubation. Glucose repression often causes inhibition of the transcription of cyclic-AMPdependent genes, which may include genes crucial to azo dye decolorization, such as azoreductase genes (White, 1995;Chang et al, 2001).…”

Section: Effect Of Carbon Sourcesmentioning

confidence: 99%

Ecofriendly Bioremediation of Acid Orange – An Electron Deficient Xenobiotic Chromogen by Haloalkaliphilic Bacterial Consortium TVU- AO 64

Vijayanand¹,

Vadakkan²,

Hemapriya³

2017

Int.J.Curr.Microbiol.App.Sci

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Section: Effect Of Carbon Sourcesmentioning

confidence: 99%

Ecofriendly Bioremediation of Acid Orange – An Electron Deficient Xenobiotic Chromogen by Haloalkaliphilic Bacterial Consortium TVU- AO 64

Vijayanand¹,

Vadakkan²,

Hemapriya³

2017

Int.J.Curr.Microbiol.App.Sci

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“…An accelerated degradation of reactive azo dyes has been observed under partially reduced conditions (Khalid et al, 2012). The reduction of azo dyes under partially reduced conditions may require an alternative redox mediator to transfer electrons from NADH to the dye molecule (Chang et al, 2001;Isik & Sponza, 2003). Some azo dyes also are degraded under aerobic conditions (Sarayu & Sandhya, 2010;Ayed et al, 2011).…”

Section: Biodegradation Via Reduction Processmentioning

confidence: 99%

Bacterial diversity and composition in major fresh produce growing soils affected by physiochemical properties and geographic locations

Ibekwe

Yang

et al. 2016

Science of The Total Environment

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Azo dyes and their intermediate degradation products are common contaminants of soil and groundwater in developing countries where textile and leather dye products are produced. The toxicity of azo dyes is primarily associated with their molecular structure, substitution groups and reactivity. To avoid contamination of natural resources and to minimize risk to human health, this wastewater requires treatment in an environmentally safe manner. This manuscript critically reviews biological treatment systems and the role of bacterial reductive and oxidative enzymes/processes in the bioremediation of dye-polluted wastewaters. Many studies have shown that a variety of culturable bacteria have efficient enzymatic systems that can carry out complete mineralization of dye chemicals and their metabolites (aromatic compounds) over a wide range of environmental conditions. Complete mineralization of azo dyes generally involves a two-step process requiring initial anaerobic treatment for decolorization, followed by an oxidative process that results in degradation of the toxic intermediates that are formed during the first step. Molecular studies have revealed that the first reductive process can be carried out by two classes of enzymes involving flavin-dependent and flavin-free azoreductases under anaerobic or low oxygen conditions. The second step that is carried out by oxidative enzymes that primarily involves broad specificity peroxidases, laccases and tyrosinases. This review focuses, in particular, on the characterization of these enzymes with respect to their enzyme kinetics and the environmental conditions that are necessary for bioreactor systems to treat azo dyes contained in wastewater.

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“…The textile industry uses approximately 1.3 million tons of dyes and dye precursors, almost all of which are manufactured synthetically. The maximum amount of dye is utilized by the textile industry for its various dyeing processes (Chang et al 2001). Among the different kinds of dyes used, the most common being azo, anthraquinone and deoxidizing dyes.…”

Section: Introductionmentioning

confidence: 99%

Biodegradation of azo dye Direct Orange 16 by Micrococcus luteus strain SSN2

Singh

Chatterji

Nandini

et al. 2014

Int. J. Environ. Sci. Technol.

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In the present study, the decolorization and degradation of azo dye Direct Orange 16 (DO-16) by a potential bacterial isolate isolated from textile effluent were evaluated. Through 16S rRNA sequence matching, the potential isolate was identified as Micrococcus luteus strain SSN2. The effects of various factors (pH, temperature, salt and dye concentration) on decolorization were investigated. The strain SSN2 had the ability to decolorize DO-16 with 96 % efficiency at pH 8, 37°C and 3 % NaCl in a short time of 6 h under static conditions. DO-16 decolorization was assessed by UV-Vis spectrophotometer with gradual decrease of dye peak intensity at 430 nm (k max ). Analytical techniques (thin-layer chromatography, Fourier transform infrared spectroscopy and high-performance liquid chromatography) further confirmed that biodegradation of DO-16 was due to reduction of the azo bond. The phytotoxicity assay (with respect to seeds of Vigna mungo and Vigna radiata) demonstrated the less toxic nature of the DO-16-degraded products compared to the toxic azo dye.

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Kinetic characteristics of bacterial azo-dye decolorization by Pseudomonas luteola

Cited by 407 publications

References 24 publications

Ecofriendly Bioremediation of Acid Orange – An Electron Deficient Xenobiotic Chromogen by Haloalkaliphilic Bacterial Consortium TVU- AO 64

Ecofriendly Bioremediation of Acid Orange – An Electron Deficient Xenobiotic Chromogen by Haloalkaliphilic Bacterial Consortium TVU- AO 64

Bacterial diversity and composition in major fresh produce growing soils affected by physiochemical properties and geographic locations

Biodegradation of azo dye Direct Orange 16 by Micrococcus luteus strain SSN2

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