Open AccessBiodegradation of the Polycyclic Aromatic Hydrocarbon Fluoranthene by Fungi Strains from a Brazilian Tropical Peat
Author(s) -
Anuska Conde Fagundes Soares Garcia,
Willian Garcia Birolli,
Bruno Rafael Araújo,
Antônio Barbosa-Junior,
Leandro Eugênio Cardamone Diniz,
André Luiz Meleiro Porto,
Luciane Pimenta Cruz Romão
Publication year - 2021
Publication title -
journal of the brazilian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.337
H-Index - 70
eISSN - 1678-4790
pISSN - 0103-5053
DOI - 10.21577/0103-5053.20210078
Subject(s) - fluoranthene , biodegradation , environmental chemistry , bioremediation , phenanthrene , chemistry , pyrene , peat , penicillium , fusarium , polycyclic aromatic hydrocarbon , organic chemistry , botany , biology , contamination , food science , ecology
Polycyclic aromatic hydrocarbons (PAHs) are an important environmental issue and the identification of new biocatalysts for an efficient biodegradation of these compounds is essential for bioremediation. Therefore, fungi strains isolated for the first time from a tropical peat at Santo Amaro das Brotas (Brazil) were studied for fluoranthene biodegradation. Fusarium sp. AC-7, Penicillium sp. AC-1 and Penicillium sp. AC-6 were isolated using fluoranthene as sole carbon source. All strains were tested for biodegradation of 100 mg L-1 fluoranthene during 14 and 28 days. After 28 days of biodegradation, 64 ± 3, 60 ± 4 and 51 ± 2% biodegradation was observed for Penicillium sp. AC-1, Penicillium sp. AC-6 and Fusarium sp. AC-7, respectively. Analysis of the obtained compounds enabled the identification of four metabolites, which were common to the three employed strains: anthrone, anthraquinone, 9-methoxyanthracene and cyclopropa[1]phenanthrene. It is important to note that control experiments were performed. The obtained results clearly demonstrated the efficiency of tropical peat fungi in the transformation of fluoranthene. These findings showed the potential of tropical peats for isolation of fungi and indicated that these strains can be applied for bioremediation processes of areas contaminated with fluoranthene and other PAHs.