Study on ochratoxin A contamination of coffee batches in the Kenyan context, in relation to cultivation methods and post harvest processing treatments
Résumé
This study set out to assess the relative importance of sound beans and unsound beans in a batch of coffee with regard to ochratoxin A (OTA) contamination. In first stage, unsound beans were found to account for 95% of contamination in a batch of coffee, whatever the methods used for post-harvest processing. It was also found that beans displaying traces of attacks by Colletotrichum kahawae were the greatest contributors to OTA contamination. In a second stage, the study compared the contamination of sound beans with that of beans attacked by Colletotrichum kahawae. On average, beans attacked by Colletotrichum kahawae had a statistically higher OTA content than sound beans (18.0 μg.kg-1 as opposed to 1.2 μg.kg-1). In addition, the average OTA content in unsound beans varied depending on growing conditions and geographical zones.
Domaines
Ingénierie des aliments
Origine : Fichiers produits par l'(les) auteur(s)
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