Resumo

PEREZ-MONTIEL, Georgina et al. Pleurotus ostreatus growth and laccase enzymes production during the degradation process of bisphenol a. Biotecnia [online]. 2021, vol.23, n.2, pp.39-46.  Epub 05-Set-2022. ISSN 1665-1456.  https://doi.org/10.18633/biotecnia.v23i2.1357.

Bisphenol A [4’4’-dihydroxy-2,2 diphenylpropane] (BPA) is an organic compound used in a wide range of house-hold products. BPA is considered as a powerful endocrine disruptor that puts human health at risk. In this investigation, Pleurotus ostreatus growth was evaluated in presence of 50 and 75 mg/L of BPA in submerged fermentation, evaluating the specific growth rate (µ), maximum biomass (Xmáx), glucose consumption, percentage (%) and biodegradation constant (k) of BPA, enzymatic activity of laccase (U/L), and some of its enzymatic kinetic parameters. The highest values regarding the kinetic parameters of growth and laccase production were obtained in the medium with 75 mg/L of BPA. P. ostreatus showed neutral-basic pH values in the media added with BPA. Glucose consumption was 100 % in all media. Within the first 100 h of growth, this fungus degraded more than 50 % of both concentrations. This research is the first in México that demonstrates the degradative efficiency of P. ostreatus BE01 by degrading a concentration of BPA that has not been previously reported and is higher than those reported in various environmental matrices.

Palavras-chave : Biodegradation; bisphenol A; Pleurotus ostreatus; laccases; kinetic parameters.

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