Ochratoxin A Ochratoxin analogs Wine Occurrence Intake
Fecha de publicación:
Remiro R, González-Peñas E, Lizarraga E, López-de-Cerain A. Quantification of ochratoxin A and five analogs in Navarra red wines. Food Control 2012 Sep;27(1):139–145
Ochratoxin A (OTA), B (OTB) and their methyl (MeOTA, MeOTB) and ethyl (OTC,
EtOTB) esters were evaluated in 51 red wine samples from Navarra (Spain). Detectable
levels of OTA and OTB were found in 100% of the samples, and 71% showed the
presence of OTC. The six ochratoxins appeared simultaneously in 18% of the samples.
Results indicated that OTC is hydrolyzed to OTA in red wine. Therefore, ochratoxin
intake from wine can be underestimated when only assessed by OTA analysis.
Analyzed Navarra wines are scarcely contaminated with ochratoxins and their
contribution to human intake is low, with the worst case being 4.7% and 6.6% of the
provisional tolerable weekly intake (PTWI) for OTA and for the sum of ochratoxins,
respectively. No significant differences were generally found between vintages. With
the exception of OTA, no significant differences were observed between organic and
traditional farming. Levels of ochratoxins were positively correlated with temperature
and inversely correlated with humidity and rainfall.