Effect of Heavy Metals and Other Xenobiotics on Biodegradation of Waste Canola Oil by Cold-Adapted Rhodococcus sp. AQ5-07

Ibrahim, Salihu; Zulkharnain, A.; Zahri, Khadijah Nabilah Mohd; Lee, G. L. Y.; Convey, Peter ORCID: https://orcid.org/0000-0001-8497-9903; Gomez Fuentes, Claudio; Sabri, Suriana; Khalil, K. A.; Alias, S. A.; Gonzales-Rocha, G.; Ahmad, A.. 2020 Effect of Heavy Metals and Other Xenobiotics on Biodegradation of Waste Canola Oil by Cold-Adapted Rhodococcus sp. AQ5-07. Revista Mexicana De Ingeniería Química, 19 (3). 1041-1052. https://doi.org/10.24275/rmiq/Bio917

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Abstract/Summary

The Antarctic is generally considered to be one of the most pristine areas in the world. However, both long and short-range pollutants are now known to be present in the Antarctic environment. Canola oil is an example of a polluting hydrocarbon that can be accidentally released into the Antarctic environment in oil wastewater treatment plants. The Antarctic soil bacterial strain Rhodococcus sp. AQ5-07, known to be capable of using waste canola oil (WCO) as its sole source of carbon, was tested for its ability to degrade canola oil in the presence of different heavy metals and xenobiotics. Rhodococcus sp. AQ5-07 was grown on minimum salt media containing different heavy metals (Zn, Co, Ni, Ag, Pb, Cu, Cr, Hg, Cd and As), xenobiotics (acrylamide and phenol) supplemented with 3% WCO. Three out of the 10 heavy metals tested (Hg, Cd and Ag) led a significant reduction in canola oil degradation at a concentration of 1 ppm. The IC50 values of Hg, Cd and Ag were 0.38, 0.45 and 0.32 ppm, respectively. The strain could also withstand 10 mg/L acrylamide, 50 mg/L phenol and 0.5% (v/v) diesel. This study confirmed the ability of Rhodococcus sp. AQ5-07 to degrade canola oil in the presence of various heavy metals and other xenobiotics, supporting its potential use in bioremediation of vegetable oil and wastewater treatments in low temperature environments.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.24275/rmiq/Bio917
Date made live:	19 Jun 2020 08:54 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/524632

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.24275/rmiq/Bio917

Date made live:

19 Jun 2020 08:54 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/524632