Abstract
Norwegian grain samples (73 oats, 75 barley, 80 wheat) from the 2000 to 2002 growing seasons were examined for contamination with five different enniatins and the association between the found concentrations and the prevalence or infection level with several common Fusarium species investigated. Enniatin B was the fungal metabolite with the highest prevalence (100%) and the highest maximum concentration (5800 μg/kg, wheat). The maximum concentration of all five enniatins together in a single sample was 7400 μg/kg (wheat). Enniatin concentrations were correlated with several independent variables, among them grain species. Beauvericin was only sporadically detected in barley and wheat and at concentrations just above the limit of detection of 3 μg/kg, while amounts up to 120 μg/kg were found in oats. The likelihood of detecting enniatin A1 as well as the concentrations of enniatins B and B1 could be mainly related to infection with Fusarium avenaceum/arthrosporioides, and the likelihood of detecting beauvericin could be related to infection with Fusarium poae. This survey indicates that the prevalence of enniatins A1, B and B1 in Norwegian grain is high, and that enniatin B concentrations of above 1000 μg/kg are common in barley and wheat.
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