Identification and characterisation of two novel azo dye degrading microorganisms from contaminated ground water and soil of a textile mill

Autor:	Sudipta Kumar Mohanty, Mallappa Kumara Swamy, Anuradha Maniyam, Priyanka Patel, Usharani Longjam
Rok vydání:	2018
Předmět:	Indole test Achromobacter Environmental Engineering Urease biology Chemistry Tryptophanase Biodegradation Management Monitoring Policy and Law biology.organism_classification Halotolerance biology.protein Fermentation Food science Microbial biodegradation
Zdroj:	International Journal of Environmental Technology and Management. 21:137
ISSN:	1741-511X 1466-2132
DOI:	10.1504/ijetm.2018.097898
Popis:	Bacterial isolates were tested for biodegradability potential of azodyes. S1 and S2 isolate effectively decolorised all azodyes tested within 72 hours. These isolates were later characterised as Achromobacter and Bacillus sp. The resistance traits on plasmid were evidenced from curing experiments. Sodiumdodecyl sulphate (SDS) and rifampicin (9 mg/ml) was found to be most effective curing agent. Achromobacter sp. was positive for tryptophanase, indole and citrate permease with ability to ferment glucose and produced gas. While, S2 showed the presence of tryptophanase, but found negative for the urease. Both the isolates were able to sustain salt concentration between 4%-10% suggesting moderately halotolerant. Bacillus sp. exhibited tolerance to heavy metal, zinc and arsenic up to 8 M; copper, cobalt and nickel to an extent of 500 mM. Efficient decolorising activity, heavy metal and salt tolerance capability indicates that isolated strains can be utilised effectively for the treatment of effluents in the dye industries.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91d4bf147c65ab295fd8877f54398636 https://doi.org/10.1504/ijetm.2018.097898 Zobrazit plný text záznamu