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Article Dans Une Revue Food Additives and Contaminants Année : 2006

Effect of pH on ochratoxin A production by A. niger aggregate species

Alexandre Esteban
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M Lourdes Abarca
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M Rosa Bragulat
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  • PersonId : 895727

Résumé

The effect of pH (2-10) on growth and ochratoxin A (OTA) production by twelve Aspergillus niger aggregate strains was studied in two culture media: Czapek Yeast Autolysate agar (CYA) and Yeast Extract Sucrose agar (YES), during a period of 30 days. The strains were selected to include different sources, different reported abilities to produce OTA and different ITS-5.8S rDNA RFLP patterns. YES showed to be better culture medium than CYA for OTA production. In this medium, OTA was produced from pH 2 or pH 3 to pH 10 depending on the strain. Our results show the ability of A. niger aggregate strains not only to grow but also to produce OTA over a wide pH range. These results will lead to a better understanding of the role of A. niger aggregate strains in the OTA contamination of several food commodities.

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Dates et versions

hal-00577290 , version 1 (17-03-2011)

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Alexandre Esteban, M Lourdes Abarca, M Rosa Bragulat, F Javier Cabañes. Effect of pH on ochratoxin A production by A. niger aggregate species. Food Additives and Contaminants, 2006, 23 (06), pp.616-622. ⟨10.1080/02652030600599124⟩. ⟨hal-00577290⟩

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