Determination of Aflatoxins and Ochratoxins in Sicilian Sweet Wines by High-Performance Liquid Chromatography with Fluorometric Detection and Immunoaffinity Cleanup

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• 作者：Vita Di Stefano ; Rosa Pitonzo ; Giuseppe Avellone…
• 关键词：Sweet dessert wine ; Ochratoxin A ; Ochratoxin B ; Aflatoxins ; IAC ; HPLC ; FLD analysis
• 刊名：Food Analytical Methods
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：8
• 期：3
• 页码：569-577
• 全文大小：721 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Food Science
  Chemistry
  Microbiology
  Analytical Chemistry
  
• 出版者：Springer New York
• ISSN：1936-976X

文摘

Ochratoxin A is the only mycotoxins with legal limits in the European Union for wine, by contrast, there is no EU legislation imposed for Aflatoxins and Ochratoxin B. A reproducible and sensitive analytical method for six mycotoxins: Ochratoxin A, Ochratoxin B, Aflatoxins B1, Aflatoxin B2, Aflatoxin G1 and Aflatoxin G2 was developed by using immunoaffinity column cleanup and HPLC-FLD method in 30 sweet wines produced in Sicily. This typical type of wine is manufactured from grapes grown in warmer climates, which have a higher sugar content; also, the over-ripening and the drying process of the grapes before fermentation conditions are responsible for the particular susceptibility of these berries to contamination by mycotoxins producing fungi. Results revealed the presence of Ochratoxin A in 96.6?% and of Ochratoxin B in 83.3?% of the samples examined (mean 0.246 and 0.168?μg/l, respectively). None of the samples showed a contamination exceeding the EU limit (2?μg/kg). Nine of tested wines were found to contain Aflatoxins with concentrations ranging from below LOD values to 0.068?μg/l. The results showed a very low incidence of Ochratoxins and Aflatoxins in analyzed wines, confirming the high degree of quality and safety of Sicilian sweet wines.