Degradation of ochratoxin a by Brevibacterium species |
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Authors: | Rodriguez Hector Reveron Ines Doria Francesca Costantini Antonella De Las Rivas Blanca Muňoz Rosario Garcia-Moruno Emilia |
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Affiliation: | Lab. Biotecnología Bacteriana, Instituto de Ciencia y Tecnología de Alimentos y Nutrición (ICTAN) , CSIC, Juan de la Cierva 3, 28006 Madrid, Spain. |
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Abstract: | The ability to degrade ochratoxin A was studied in different bacteria with a well-known capacity to transform aromatic compounds. Strains belonging to Rhodococcus, Pseudomonas, and Brevibacterium genera were grown in liquid synthetic culture medium containing ochratoxin A. Brevibacterium spp. strains showed 100% degradation of ochratoxin A. Ochratoxin α was detected and identified by high-performance liquid chromatography-mass spectrometry (HPLC-MS) as a degradation product in the cell-free supernatants. The degradation of ochratoxin A is of public concern for food and environmental safety, because it could contribute to the development of new biological ochratoxin A detoxification systems in foodstuffs. In this study, the degradation of ochratoxin A by bacteria belonging to the food chain was demonstrated for the first time. |
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