Journal
FOOD ADDITIVES AND CONTAMINANTS
Volume 21, Issue 6, Pages 578-585Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02652030410001687681
Keywords
mycotoxin; ochratoxin A; fruit; raisins; sultanas; currants; liquid chromatography
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Between 1998 and 2000, 151 samples of raisins and sultanas and two samples of currants were collected from retail outlets across Canada and analysed for ochratoxin A. Samples were extracted with methanol-sodium bicarbonate, and the extracts were cleaned-up by immunoaffinity column chromatography. Ochratoxin A was quantified by liquid chromatography with fluorescence detection. The minimum quanti. able level was 0.1 ng g(-1). Ochratoxin A was present, above the minimum quanti. able level, in 67 (79%) of 85 samples of raisins, in 39 (59%) of 66 samples of sultanas, and in both samples of currants. The overall mean level of ochratoxin A was 1.8 ng g(-1) in both the raisins and sultanas, and 2.8 ng g(-1) in the currants.
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