Isolation and characterization of phenol-degrading yeasts from an oil refinery wastewater in Brazil

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作者：

Lidianne，Leal，Rocha，Rossana，de，Aguiar，Cordeiro，Rivelino，Martins，Cavalcante

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摘要：

This study investigated the aerobic degradation of phenol by yeast strains isolated from an oil refinery wastewater from the Northeast of Brazil. The samples displayed low fungal diversity, as only yeast colonies were detected on Sabouraud dextrose agar containing chloramphenicol 0.05% (w/v). Among the isolates, three yeast strains were selected to be evaluated for their potential for degrading high phenol concentrations. These species were identified through morphological and biochemical characteristics as Candida tropicalis, C. rugosa, and Pichia membranaefaciens. Although the strains were able to degrade the phenol concentration present in the wastewater, which was 7 mg l−1, only C. tropicalis was capable of growing at high concentrations of phenol such as 500 mg l−1 and 1,000 mg l−1 in a mineral medium containing this pollutant as the only carbon source. C. rugosa and P. membranaefaciens were inhibited in the pres

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关键词：

Phenol biodegradation - Yeast - Wastewater - Oil refinery

DOI：

10.1007/s11046-007-9043-6

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年份：

2007