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Electronic Journal of Biotechnology
Universidad Católica de Valparaíso
ISSN: 0717-3458
Vol. 7, No. 1, 2004, pp. 30-37
Bioline Code: ej04004
Full paper language: English
Document type: Research Article
Document available free of charge

Electronic Journal of Biotechnology, Vol. 7, No. 1, 2004, pp. 30-37

 en Biodegradation of natural phenolic compounds as single and mixed substrates by Fusarium flocciferum check for this species in other resources
Mendonça, Elsa; Martins, Aida & Anselmo, Ana Maria

Abstract

The mycelium of Fusarium flocciferum check for this species in other resources was assayed for its ability to degrade aromatic compounds, namely, gallic, protocatechuic, vanillic, syringic, caffeic, and ferulic acids and syringic aldehyde, commonly found in agro-industrial wastes. The biodegradation assays were performed in liquid medium with the phenolic compounds as single substrates and as a synthetic mixture containing the seven aromatic compounds. The results with single substrates indicated that in 24 hrs of incubation the fungus was able to reduce the phenolic concentration from 200 mg/l to below detection limits, except for syringic acid, being the lowest degradation rates found for this acid and its aldehyde. The biodegradation experiments with the mixture of phenolic compounds showed that after 8 hrs the total phenolic concentration was reduce from 350 mg/l to below the detection limits of all the tested compounds. In all the experiments a rise in the pH and an effective detoxification of the phenolic solutions were also observed.

Keywords
agro-industrial wastes, aromatic compounds, detoxification, fungi

 
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