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Bioreduction of Cr (VI) by alkaliphilic Bacillus subtilis and interaction of the membrane groups
Joint Authors
Mangaiyarkarasi, M. S. Mary
Vincent, S.
Janarthanan, S.
Rao, T. Subba
Tata, B. V. R.
Source
Saudi Journal of Biological Sciences
Issue
Vol. 18, Issue 2 (30 Jun. 2011), pp.157-167, 11 p.
Publisher
Publication Date
2011-06-30
Country of Publication
Saudi Arabia
No. of Pages
11
Main Subjects
Topics
Abstract EN
Detoxification of Cr (VI) under alkaline pH requires attention due to the alkaline nature of many effluents.
An alkaliphilic gram-positive Bacillus subtilis isolated from tannery effluent contaminated soil was found to grow and reduce Cr (VI) up to 100 % at an alkaline pH 9.
Decrease in pH to acidic range with growth of the bacterium signified the role played by metabolites (organic acids) in chromium resistance and reduction mechanism.
The XPS and FT-IR spectra confirmed the reduction of Cr (VI) by bacteria into +3 oxidation state.
Chromate reductase assay indicated that the reduction was mediated by constitutive membrane bound enzymes.
The kinetics of Cr (VI) reduction activity derived using the monod equation proved (Ks = 0.00032) high affinity of the organism to the metal.
This study thus helped to localize the reduction activity at subcellular level in a chromium resistant alkaliphilic Bacillus sp.
American Psychological Association (APA)
Mangaiyarkarasi, M. S. Mary& Vincent, S.& Janarthanan, S.& Rao, T. Subba& Tata, B. V. R.. 2011. Bioreduction of Cr (VI) by alkaliphilic Bacillus subtilis and interaction of the membrane groups. Saudi Journal of Biological Sciences،Vol. 18, no. 2, pp.157-167.
https://search.emarefa.net/detail/BIM-364294
Modern Language Association (MLA)
Tata, B. V. R.…[et al.]. Bioreduction of Cr (VI) by alkaliphilic Bacillus subtilis and interaction of the membrane groups. Saudi Journal of Biological Sciences Vol. 18, no. 2 (2011), pp.157-167.
https://search.emarefa.net/detail/BIM-364294
American Medical Association (AMA)
Mangaiyarkarasi, M. S. Mary& Vincent, S.& Janarthanan, S.& Rao, T. Subba& Tata, B. V. R.. Bioreduction of Cr (VI) by alkaliphilic Bacillus subtilis and interaction of the membrane groups. Saudi Journal of Biological Sciences. 2011. Vol. 18, no. 2, pp.157-167.
https://search.emarefa.net/detail/BIM-364294
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 166-167
Record ID
BIM-364294