Effect of heavy metals and other xenobiotics on biodegradation of waste canola oil by cold-adapted Rhodococcus sp. strain AQ5-07

Ibrahim, S. and Zulkharnain, A. and Zahri, K. N. M. and Lee, G. L. Y. and Convey, P. and Gomez-Fuentes, C. and Sabri, S. and Khalil, K. A. K. and Alias, S. A. and Gonzalez-Rocha, G. and Ahmad, S. A. (2020) Effect of heavy metals and other xenobiotics on biodegradation of waste canola oil by cold-adapted Rhodococcus sp. strain AQ5-07. Revista Mexicana De Ingenieria Quimica, 19 (3). pp. 1041-1052. ISSN 16652738, DOI https://doi.org/10.24275/rmiq/Bio917.

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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: Article
Funders: Bayero University, Centro de Investigacion y Monitoreo Ambiental Ant?rctico, Instituto Ant?rtico Chileno, National Antarctic Research Centre, Teniente Coronel Jose Ignacio Alvarado Camps, Yayasan Penyelidikan Antartika Sultan Mizan, Natural Environment Research Council, National Eye Research Centre, Universiti Putra Malaysia, Tertiary Education Trust Fund
Uncontrolled Keywords: Arctica; biodegradation; canola oil; heavy metals; Rhodococcus; xenobiotics
Subjects: Q Science > QR Microbiology
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences
Depositing User: Ms Zaharah Ramly
Date Deposited: 29 Dec 2023 12:41
Last Modified: 29 Dec 2023 12:41
URI: http://eprints.um.edu.my/id/eprint/36437

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