Tributyltin degrading microbial enzymes: A promising remediation approach.

Bruna Bacaro Borrego, Louise Hase Gracioso, Bruno Karolski, Letícia Oliveira Bispo Cardoso, Letícia Beatriz Ueda Melo, Ítalo Braga Castro, Elen Aquino Perpetuo

Marine pollution bulletin 2023 Apr

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Brazil is one of the countries most impacted along the entire coastline by the presence of tributyltin (TBT), a biocide used in antifouling paints. Despite being banned since 2008, its use is still registered in the country, and it is possible to find recent inputs of this substance in places under the influence of shipyards, marinas, and fishing ports. In this study, a bacterium isolated from TBT-contaminated sediment from Santos and São Vicente Estuarine System (SESS) in Brazil, identified as Achromobacter sp., proved to be resistant to this compound. Furthermore, its crude enzymatic extract presented the ability to reduce up to 25 % of the initial TBT concentration in the liquid phase in 1 h, demonstrating to be a simple, fast, effective procedure and a potential tool for the environmental attenuation of TBT. Copyright © 2023 Elsevier Ltd. All rights reserved.

Citation

Bruna Bacaro Borrego, Louise Hase Gracioso, Bruno Karolski, Letícia Oliveira Bispo Cardoso, Letícia Beatriz Ueda Melo, Ítalo Braga Castro, Elen Aquino Perpetuo. Tributyltin degrading microbial enzymes: A promising remediation approach. Marine pollution bulletin. 2023 Apr;189:114725