Occurrence of ochratoxin A in Rioja Alavesa wines

Quintela, Silvia; Villarán, Ma Carmen; Armentia, Iratxe López de; Elejalde, Edurne

doi:10.1016/j.foodchem.2010.09.096

Cited by 30 publications

(11 citation statements)

References 18 publications

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“…This is in accordance with the hypothesis that aging of the wine does not affect the OTA concentration (Bellí et al, 2004, Quintela et al, 2011. With regard to MeOTA and MeOTB, there were significant differences (p < 0.01) due to the fact that the levels obtained for both micotoxins were below the limit of quantification in 2004 vintage.…”

Section: Concentration Of Ochratoxins In Traditional Navarra Red Winessupporting

confidence: 90%

“…The low limits of detection and quantification of this analytical method, much lower than others previously described, gave a great percentage of positive samples but the mean and median values obtained were lower than many of the LOD described in other works. In a recent research study, the mean OTA concentration (0.035 µg·L -1 ) found in La Rioja (the nearest winemaking zone to Navarra) appears to be similar (Quintela et al, 2011). Red wines analyzed in southern regions of Spain (mean = 0.25 µg·L -1 ) had higher concentrations of this mycotoxin (Blesa, Soriano, Moltó & Mañes, 2004).…”

Section: Total Occurrence Of Ochratoxins and Dietary Intakementioning

confidence: 83%

“…The presence of ochratoxin A in wine has been reported worldwide (Soufleros, Bouloumpasi & Tricard, 2003, Rosa, Fraga, Santana, Magnoli & Dalcero, 2004, Leong, Hocking, Pitt, Kazi, Emmett & Scott, 2006, Brera et al, 2008, including in Spain (López de Cerain, González-Peñas, Jiménez, & Bello, 2002, Bellí, Marín, Duaigües, Ramos & Sanchis, 2004, Quintela, Villaran, Lopez de Armentia & Elejalde, 2011, which is one of the principal wine producers in the world (OIV, International…”

Section: Introductionmentioning

confidence: 99%

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Quantification of ochratoxin A and five analogs in Navarra red wines

et al. 2012

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addresses of all coauthors: Rebeca Remiro: rremiro@alumni.unav.es. Elena Lizarraga PhD: elizarraga@unav.es. Adela López de Cerain PhD: acerain@unav.es. ABSTRACTOchratoxin 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.

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Section: Concentration Of Ochratoxins In Traditional Navarra Red Winessupporting

confidence: 90%

Section: Total Occurrence Of Ochratoxins and Dietary Intakementioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

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Quantification of ochratoxin A and five analogs in Navarra red wines

et al. 2012

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“…A previous study carried out by our team (Quintela, Villarán, López de Armentia, & Elejalde, 2011) showed that the OTA mean concentration detected in DOCa Rioja wines was below the limit established by the European Commission, representing a 0.07% of the latest tolerable weekly intake (TWI) established by EFSA (European Food Safety Authority) (EFSA, 2006). The European Commission sets the limit of OTA for wine in 2 mg/l by the Regulation (EC) N 123/2005 in order to protect consumers (EC, 2005).…”

Section: Introductionmentioning

confidence: 83%

“…The chromatographic analysis was performed as described earlier (Quintela et al, 2011). The HPLC equipment was connected to a fluorescent spectrophotometer (both from Hewlett-Packard model 1100) set an excitation and emission wavelengths of 333 nm and 460 nm, respectively.…”

Section: Apparatus and Chromatographic Conditionsmentioning

confidence: 99%