NDLI: Bioremediation of Heavy Metals by a Novel Bacterial Strain Enterobacter cloacae and Its Antioxidant Enzyme Activity, Flocculant Production, and Protein Expression in Presence of Lead, Cadmium, and Nickel

Content Provider	Springer Nature Link
Author	Banerjee, Goutam Pandey, Shubhant Ray, Arun Kumar Kumar, Ravi
Copyright Year	2015
Abstract	This investigation reported the isolation and characterization of a potent heavy metal accumulating bacterial strain Enterobacter cloacae B1 from polluted soil at Ghaziabad, India. The minimum inhibitory concentration of the selected bacterial strain was recorded to be 1100 ppm for lead, 900 ppm for cadmium, and 700 ppm for nickel. Bioaccumulation of lead by this bacterial strain was extremely high (95.25 %), followed by cadmium (64.17 %) and nickel (36.77 %). Antioxidant enzymes such as catalase (CAT) and superoxide dismutase (SOD) activity was determined in presence of lead, cadmium, and nickel at a concentration of 400 ppm. To monitor the physiological stress, malondialdehyde (MDA) level was also estimated. In order to optimize the flocculant production, bacterial strain E. cloacae B1 was cultured in specific medium at different incubation period (24 to 72 h), pH (6.0 to 9.0), and temperature (20 to 50 °C). It was observed that surfactant production was maximum at 72 h of incubation period (47.28 %), pH 8.0 (56.63 %), and temperature 40 °C (62.94 %). Protein expression profile in presence of these heavy metals was also interesting. Few proteins were noticed to be overexpressed in presence of these heavy metals.
Starting Page	1
Ending Page	9
Page Count	9
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	226
Issue Number	4
e-ISSN	15732932
Language	English
Publisher	Springer International Publishing
Publisher Date	2015-03-13
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Enterobacter cloacae 16S rRNA Minimum inhibitory concentration Heavy metal accumulation Antioxidant enzymes Flocculant production Protein expression Environment Water Quality/Water Pollution Atmospheric Protection/Air Quality Control/Air Pollution Soil Science & Conservation Hydrogeology Climate Change/Climate Change Impacts
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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