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Banerjee, Goutam
- An Alternative Approach of Toxic Heavy Metal Removal by Arthrobacter phenanthrenivorans:Assessment of Surfactant Production and Oxidative Stress
Abstract Views :239 |
PDF Views:75
Authors
Affiliations
1 Department of Zoology, Visva-Bharati University, Santiniketan 731 235, IN
2 National Institute of Science Education and Research, Bhubaneswar 751 005, IN
3 Helix Biogenesis, Sector-2, Noida 201 301, IN
1 Department of Zoology, Visva-Bharati University, Santiniketan 731 235, IN
2 National Institute of Science Education and Research, Bhubaneswar 751 005, IN
3 Helix Biogenesis, Sector-2, Noida 201 301, IN
Source
Current Science, Vol 110, No 11 (2016), Pagination: 2124-2128Abstract
The present study demonstrates the removal of three toxic heavy metals (lead, cadmium and nickel) by the bacterial strain Arthrobacter phenanthrenivorans from polluted water. The removal efficiency of heavy metals was recorded to be highest in case of lead (79.91%), followed by nickel (47.62%) and cadmium (34.05%). Furthermore, surfactant production by A. phenanthrenivorans was optimized, which is useful for different purposes like metal and oil removal from water. Partial characterization of the semi-purified surfactant was done for thermal stability, pH tolerance and metal ions sensitivity. Antioxidant enzyme activity (catalase and superoxide dismutase) and stress marker-malondialdehyde level were also determined in the presence of these three heavy metals.Keywords
Arthrobacter phenanthrenivorans, Oxidative Stress, Surfactant Production, Toxic Heavy Metals.Full Text
- Screening of Autochthonous Intestinal Microbiota as Candidate Probiotics Isolated from Four Freshwater Teleosts
Abstract Views :242 |
PDF Views:76
Authors
Ankita Nandi
1,
Goutam Banerjee
1,
Suhas Kumar Dan
1,
Pinki Ghosh
1,
Koushik Ghosh
2,
Arun Kumar Ray
1
Affiliations
1 Fisheries Laboratory, Department of Zoology, Visva-Bharati University, Santiniketan 731 235, IN
2 Department of Zoology, University of Burdwan, Golap Bag, Burdwan 713 104, IN
1 Fisheries Laboratory, Department of Zoology, Visva-Bharati University, Santiniketan 731 235, IN
2 Department of Zoology, University of Burdwan, Golap Bag, Burdwan 713 104, IN
Source
Current Science, Vol 113, No 04 (2017), Pagination: 767-773Abstract
In this study altogether 109 autochthonous gut bacteria were screened from 4 fish species (Labeo rohita, Labeo bata, Catla catla and Puntius javanicus), of which 13 isolates displayed antagonism to 4 fish potent pathogens, namely Aeromonas salmonicida, Aeromonas hydrophila, Pseudomonas fluorescens and Aeromonas sobria. Eight promising isolates were further evaluated for extracellular enzyme production, non-hemolytic activity, bile tolerance and identified by 16S rRNA sequencing. Strains CCF7 (identified as Bacillus sp.), CCH9 and PJH1 (identified as two strains of Bacillus amyloliquefaciens) exhibited high score in antagonism assay and fulfilled other probiotic criteria, including safety aspects. However, application of these probiotics in aquaculture industries requires in vivo experiments and other information like immune modulating efficiency and binding ability on gut.Keywords
Antagonism, Bacillus Species, Fish Gut Bacteria, Athogen, Probiotics.Full Text
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