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- W2945743383 abstract "Objectives: The current study focuses on the isolation of bioluminescent bacteria from the gut of Sea urchin and using its luminescence property as a potential biosensor for detecting chromium toxicity in water. Methodology: Bioluminescent bacteria, JAAKP J2 was isolated from the gut of Pseudoboletia indiana species of Sea urchin collected from Pondicherry university beach. The morphological, biochemical, enzyme profiling and molecular characterization through 16S sequencing were performed to identify the strain. Growth kinetic assays and spectrophotometric analysis under chromium stress condition were performed on bioluminescent strains for luminescence inhibition studies. The bioluminescent bacteria was then immobilized in nutrient agar cubesand used as a biosensor for the detection of hexavalent chromium concentration in water samples. Findings: The morphological, biochemical and molecular characterization revealed that the isolate JAAKP J2 was closely related to Vibrio campbellii. Industrially important enzymes like Protease, Lipase, Agarase, Cellulase, Xylanase and Gelatinase were also screened in this study. The developed biosensor using bioluminescence property of the isolate was able to detect the level of chromium toxicity in water samplesat concentration not more than 9 mg L-1 . Further we have elucidated a possible hypothetical pathway for reduction in luminescence property due to ROS (Reactive oxygen species) caused by hexavalent chromium toxicity in bacteria. Novelty: The study is first of its kind in isolation of bioluminescent strain from sea urchin and using it as a biosensor for heavy metal detection in water. Our study also throws lights on futuristic approach of detecting other heavy metals like lead, zinc, cadmium, mercury in water samples by bacterial luminescence. Keywords: Bioluminescent Bacteria, Biosensor, Chromium Toxicity, Enzyme Profiling, Sea Urchin" @default.
- W2945743383 created "2019-05-29" @default.
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- W2945743383 date "2019-04-01" @default.
- W2945743383 modified "2023-09-26" @default.
- W2945743383 title "OMONITERING OF HEAVY METAL POLLUTION BY BIOLUMINESCENT BACTERIAL BIOSENSORS" @default.
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- W2945743383 doi "https://doi.org/10.17485/ijst/2019/v12i15/142603" @default.
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