Bacterial bioluminescence response to long-term exposure to reverse osmosis treated effluents from dye industries

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dc.contributor.author Ravindran, J.
dc.contributor.author Manikandan, B.
dc.contributor.author Shirodkar, P.V.
dc.contributor.author Francis, K.X.
dc.contributor.author ManiMurali, R.
dc.contributor.author Vethamony, P.
dc.date.accessioned 2014-12-11T06:39:31Z
dc.date.available 2014-12-11T06:39:31Z
dc.date.issued 2014
dc.identifier.citation Canadian Journal of Microbiology, vol.60(10); 2014; 661-668
dc.identifier.uri http://drs.nio.org/drs/handle/2264/4654
dc.description.abstract The bacterial bioluminescence assay is one of the novel means for toxicity detection. The bioluminescence response of 2 marine bioluminescent bacteria was tested upon their long-term exposure to 9 different reverse osmosis (RO) rejects with varying chemical composition sampled from various dye industries. Bioluminescent bacteria were cultured in the RO reject samples, at different concentrations, and their growth rate and luminescence was measured for 24 h. The RO reject samples caused sublethal effects upon exposure and retarded the growth of bacteria, confirming their toxic nature. Further, continuation of the exposure showed that the initial luminescence, though reduced, recovered and increased beyond the control cultures irrespective of cell density, and finally decreased once again. The present study emphasizes the need of evolving a long-term exposure assay and shows that the method followed in this study is suitable to evaluate the toxicants that exert delayed toxicity, using lower concentrations of toxicants as well as coloured samples.
dc.language.iso en
dc.publisher NRC Research Press
dc.rights © NRC Research Press. All authors who publish in NRC Research Press journals may at any time in the publication process self-archive their submitted and/or accepted manuscript on their institution's Web site or in an open-access repository.
dc.subject Bioluminescence,
dc.subject Reverse Osmosis
dc.subject lethal effect
dc.subject pollution
dc.title Bacterial bioluminescence response to long-term exposure to reverse osmosis treated effluents from dye industries
dc.type Journal Article


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