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Cuprys A, Thomson P, Suresh G, Roussi T, Brar SK, Drogui P. Potential of agro-industrial produced laccase to remove ciprofloxacin. Environ Sci Pollut Res Int 2022; 29:10112-10121. [PMID: 34510355 DOI: 10.1007/s11356-021-13578-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 03/17/2021] [Indexed: 06/13/2023]
Abstract
Ciprofloxacin (CIP), a widely used antibiotic, is frequently detected in the environment due to insufficient wastewater and water treatment. Hence, novel, green and cost-effective technologies are required to enhance the removal of these pollutants. The potency of crude enzymes, especially laccases, produced by white-rot fungi was tested to assess their effectiveness to degrade CIP from water. Crude laccase alone could not oxidize CIP. The addition of syringaldehyde, a redox mediator, resulted in a decrease in antibiotic concentration up to 68.09±0.12% in 24 h, which was the highest removal efficiency achieved with 0.15 mg/mL syringaldehyde and 2 mg/mL of crude laccase (0.1 U/ml). Crude laccase oxidation of CIP was inhibited after 6 h of treatment. To compare, a pure enzyme with the same activity as the crude one removed 86% of CIP in 24 h. No inhibitory effect during the treatment was observed. The estimation of antimicrobial efficiency revealed that after 6 h of treatment, the toxicity towards Escherichia coli decreased by 30%. The wastewater treatment by the crude laccase-mediated system was estimated to significantly reduce the cost of enzymatic treatment.
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Affiliation(s)
- Agnieszka Cuprys
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada
- Norwegian University of Life Sciences, Elizabeth Stephansens vei 15, 1430, Ås, Norway
| | - Paisley Thomson
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada
| | - Gayatri Suresh
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada
| | - Tarek Roussi
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada
- Laurentian University, 935 Ramsey Lake Rd, Sudbury, ON, P3E 2C6, Canada
| | - Satinder Kaur Brar
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada.
- Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, Ontario, M3J 1P3, Canada.
| | - Patrick Drogui
- INRS-ETE, Université du Québec, 490, Rue de la Couronne, Québec, G1K 9A9, Canada
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