Isolation and characterization of novel cadmium-resistant Escherichia fergusonii ZSF-15 from industrial effluent for flocculant production and antioxidant enzyme activity

Cadmium (Cd) is a highly toxic metal that frequently contaminates our environment. In this study, the bioflocculant-producing, cadmium-resistant Escherichia fergusonii ZSF-15 was characterized from Paharang drain, Bawa Chak, Faisalabad, Pakistan. The Cd-resistant E. fergusonii was used to determine...

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Veröffentlicht in:Environmental monitoring and assessment 2024-05, Vol.196 (5), p.412-412, Article 412
Hauptverfasser: Zafar, Saima, Ashraf, Asma, Hayat, Sumreen, Siddique, Muhammad Hussnain, Waseem, Muhammad, Hassan, Mudassir, Qaisar, Hira, Muzammil, Saima
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container_issue 5
container_start_page 412
container_title Environmental monitoring and assessment
container_volume 196
creator Zafar, Saima
Ashraf, Asma
Hayat, Sumreen
Siddique, Muhammad Hussnain
Waseem, Muhammad
Hassan, Mudassir
Qaisar, Hira
Muzammil, Saima
description Cadmium (Cd) is a highly toxic metal that frequently contaminates our environment. In this study, the bioflocculant-producing, cadmium-resistant Escherichia fergusonii ZSF-15 was characterized from Paharang drain, Bawa Chak, Faisalabad, Pakistan. The Cd-resistant E. fergusonii was used to determine the bioflocculant production using yeast-peptone-glycerol medium (pH 6.5) supplemented with 50 mg L −1 of Cd. The culture was incubated for 3 days at 37 °C in a rotary shaker at 120 rpm. The fermentation broth was centrifuged at 4000 g for 10 min after the incubation period. The maximum flocculating activity by isolate ZSF-15 was found to be 71.4% after 48 h of incubation. According to the Fourier transform infrared spectroscopy analysis, the bioflocculant produced by strain ZSF-15 was comprised of typical polysaccharide and protein, i.e. hydroxyl, carboxyl, and amino groups. The strain ZSF-15 exhibited bioflocculant activity at range of pH (6–8) and temperature (35–50℃). Maximum flocculation activity (i.e. 71%) was observed at 47℃, whereas 63% flocculation production was observed at pH 8. In the present study, antioxidant enzyme profile of ZSF-15 was also evaluated under cadmium stress. A significant increase in antioxidant enzymes including superoxide dismutase (118%) and ascorbate peroxidase (28%) was observed, whereas contents of catalase (86%), glutathione transferase (13%), and peroxidase (8%) were decreased as compared to control.
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subjects Amino groups
Analytical methods
Antioxidants
Ascorbic acid
Atmospheric Protection/Air Quality Control/Air Pollution
Cadmium
Cadmium - toxicity
Catalase
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental Monitoring
Enzymatic activity
Enzyme activity
Enzymes
Escherichia
Fermentation
Flocculation
Fourier analysis
Fourier transforms
Glutathione
Glutathione transferase
Glycerol
Heavy metals
Hydrogen-Ion Concentration
Incubation period
Industrial effluents
Industrial wastes
Industrial wastewater
Infrared analysis
Infrared spectroscopy
L-Ascorbate peroxidase
Monitoring/Environmental Analysis
Peptones
Peroxidase
pH effects
Polysaccharides
Superoxide dismutase
Yeasts
title Isolation and characterization of novel cadmium-resistant Escherichia fergusonii ZSF-15 from industrial effluent for flocculant production and antioxidant enzyme activity
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