Survey of Dry Pasta for Ochratoxin A in Canada

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Abstract:

Ochratoxin A (OTA) was determined in 274 samples of dry pasta sold across Canada in 2004 to 2006. Ground sample was extracted with acetonitrile-water (6:4 [vol/vol]), filtered, diluted with phosphate-buffered saline, and cleaned with an immunoaffinity column. Analysis was by reversed-phase liquid chromatography with fluorescence detection, and in the second year by liquid chromatography–electrospray tandem mass spectrometry as well. For 2004 and 2005, the limit of quantitation was approximately 0.5 ng of OTA per g (signal-to-noise ratio of 10:1). In 2006, the limit of quantitation was estimated to be 0.2 ng of OTA per g. Incidence of contamination above 0.5 ng of OTA per g was 21, 18, and 66% in the years 2004, 2005, and 2006, respectively, reflecting the contamination variability of durum wheat crops and showing the importance of multiyear surveillance. Mean levels of OTA found in these 3 years were, respectively, 0.30, 0.28, and 0.76 ng/g, and maximum levels were, respectively, 1.8, 1.4, and 3.3 ng/g.

Document Type: Research Article

Affiliations: 1: Health Canada, Health Products and Foods, Food Laboratory Division, 2301 Midland Avenue, Scarborough, Ontario, Canada M1P 4R7 2: Health Canada, Health Products and Food Branch, Address Locator 2203D, Ottawa, Ontario, Canada K1A 0L2

Publication date: April 1, 2009

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    First published in 1937, the Journal of Food Protection®, is a refereed monthly publication. Each issue contains scientific research and authoritative review articles reporting on a variety of topics in food science pertaining to food safety and quality. The Journal is internationally recognized as the leading publication in the field of food microbiology with a readership exceeding 11,000 scientists from 70 countries. The Journal of Food Protection® is indexed in Index Medicus, Current Contents, BIOSIS, PubMed, Medline, and many others.

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