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Evaluation of the heavy metals tolerant UV rays treated bacteria isolated from anthropogenic sites of Chambal region, India

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Title Evaluation of the heavy metals tolerant UV rays treated bacteria isolated from anthropogenic sites of Chambal region, India
 
Creator Gupta, Akanksha
Chitranshi, Swati
Dwivedi, Alok
Johri, Sonia
 
Subject Antibiotic profiling
Atomic absorption spectroscopy
Bioremediation
Heavy metal pollution
Metal tolerant bacteria
 
Description 864-869
Industrial waste is released into the environment and leads to various types of heavy metal, which are toxic, mutagenic
and carcinogenic in nature. Heavy metals are not biodegradable but accumulated by living organisms and cause diseases at
even low concentrations. In this study, we selected four anthropogenic sites from Chambal region, isolated bacteria and
investigated its heavy metal removal capability. The bacteria was isolated and identified as Escherichia coli (Ag-5), on the
basis of biochemical and 16S rRNA gene sequence. Among the five (cadmium, cobalt, lead, nickel and zinc) heavy metals
studied, Ni2+ has been observed to be highly toxic with minimum inhibitory concentration score of 200 ppm. E. coli could
tolerate Zn2+ (300 ppm), Cd2+ (400 ppm), Co2+ (400 ppm) and Pb+2 (500 ppm). Heavy metal tolerance capability was also
evaluated by UV rays treated E. coli (Ag-5) isolate and compared with wild strain Ag-5. The result indicated that the
tolerance capability was enhanced by UV rays treated bacterial isolate as compared to wild strain with respect to all tested
heavy metals. Atomic absorption spectroscopy results revealed that wild strain removed 78.2% cadmium nitrate, while UV
rays 30 and 60 s. exposed strain removed 85.9 and 83% cadmium nitrate. Wild strain removed 64.4% nickel chloride, while
UV rays 30 and 60 s exposed strain removed 66.9 and 74.5% nickel chloride. The results indicate that indigenous E. coli
treated with UV rays could serve as heavy metal tolerant bacteria and utilized in bioremediation processes.
 
Date 2022-10-26T10:16:58Z
2022-10-26T10:16:58Z
2022-11
 
Type Article
 
Identifier 0975-1009 (Online); 0019-5189 (Print)
http://nopr.niscpr.res.in/handle/123456789/60730
https://doi.org/10.56042/ijeb.v60i11.51546
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source NIScPR-CSIR, India