Details

Autor(en) / Beteiligte

• Rodrigues, Amanda Dal’Ongaro
• dos Santos Montanholi, Arthur
• Shimabukuro, Angela Akimi
• Yonekawa, Murilo Kioshi Aquino
• Cassemiro, Nadla Soares
• Silva, Denise Brentan
• Marchetti, Clarice Rossato
• Weirich, Carlos Eduardo
• Beatriz, Adilson
• Zanoelo, Fabiana Fonseca
• Marques, Maria Rita
• Giannesi, Giovana Cristina
• das Neves, Silvia Cordeiro
• Oliveira, Rodrigo Juliano
• Ruller, Roberto
• de Lima, Dênis Pires
• dos Anjos dos Santos, Edson

Titel

N-acetylation of toxic aromatic amines by fungi: Strain screening, cytotoxicity and genotoxicity evaluation, and application in bioremediation of 3,4-dichloroaniline

Ist Teil von

• Journal of hazardous materials, 2023-01, Vol.441, p.129887-129887, Article 129887

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Aromatic amines (AA) are one of the most commonly used classes of compounds in industry and the most common pollutants found in both soil and water. 3,4-Dichloaniline (3,4-DCA) is a persistent residue of the phenylurea herbicide in the environment. In this study, we used a colorimetric method as a new approach to screen 12 filamentous fungal strains of the genera Aspergillus, Chaetomium, Cladosporium, and Mucor to assess their capacity to perform AA N-acetylation since it is considered a potential tool in environmental bioremediation. Subsequently, the selected strains were biotransformed with different AA substrates to evaluate the product yield. The strains Aspergillus niveus 43, Aspergillus terreus 31, and Cladosporium cladosporioides showed higher efficiencies in the biotransformation of 3,4-DCA at 500 µM into its N-acetylated product. These fungal strains also showed great potential to reduce the phytotoxicity of 3,4-DCA in experiments using Lactuca sativa seeds. Furthermore, N-acetylation was shown to be effective in reducing the cytotoxic and genotoxic effects of 3,4-DCA and other AA in the immortalized human keratinocyte (HaCaT) cell line. The isolated products after biotransformation showed that fungi of the genera Aspergillus and Cladosporium appeared to have N-acetylation as the first and main AA detoxification mechanism. Finally, A. terreus 31 showed the highest 3,4-DCA bioremediation potential, and future research can be carried out on the application of this strain to form microbial consortia with great potential for the elimination of toxic AA from the environment. [Display omitted] •The colorimetric method was used to detect AA N-acetylation performed by fungi.•Aspergillus ssp. and Cladosporium cladosporioides N-acetylated 3,4-DCA at 500 µM.•AA-Ac showed lower cytotoxicity and genotoxicity (HaCat cell line) than AA.•The N-acetylation of 3,4-DCA by fungi reduced phytotoxicity in L. sativa assay.