Dépôt numérique

Potential of agro-industrial produced laccase to remove ciprofloxacin.

Cuprys, Agnieszka; Thomson, Paisley; Suresh, Gayatri; Roussi, Tarek; Brar, Satinder Kaur et Drogui, Patrick ORCID logoORCID: https://orcid.org/0000-0002-3802-2729 (2022). Potential of agro-industrial produced laccase to remove ciprofloxacin. Environmental Science and Pollution Research , vol. 29 . pp. 10112-10121. DOI: 10.1007/s11356-021-13578-2.

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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

Type de document: Article
Mots-clés libres: fluroquinolone; enzymatic treatment; white-rot fungi; wastewater; syringaldehyde; techno-economic calculation
Centre: Centre Eau Terre Environnement
Date de dépôt: 15 oct. 2021 17:30
Dernière modification: 15 févr. 2022 16:44
URI: https://espace.inrs.ca/id/eprint/12035

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