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Ochratoxin A in dried vine fruits on the Canadian retail market

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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 quantifiable level was 0.1 ng g−1. Ochratoxin A was present, above the minimum quantifiable 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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Keywords: currants; fruit; liquid chromatography; mycotoxin; ochratoxin A; raisins; sultanas

Document Type: Research Article

Affiliations: 1: Health Canada, Health Products and Food Branch 510 Lagimodière Blvd Winnipeg MB R2J 3Y1 Canada 2: Health Canada, Health Products and Food Branch Address Locator 2203D Tunney's Pasture Ottawa ON K1A 0L2 Canada

Publication date: June 1, 2004

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