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Assessment of ochratoxin A occurrence in Argentine red wines using a novel sensitive quechers‐solid phase extraction approach prior to ultra high performance liquid chromatography‐tandem mass spectrometry methodology
Author(s) -
MariñoRepizo Leonardo,
Gargantini Raquel,
Manzano Humberto,
Raba Julio,
Cerutti Soledad
Publication year - 2017
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.8065
Subject(s) - quechers , ochratoxin a , wine , chromatography , extraction (chemistry) , chemistry , solid phase extraction , detection limit , liquid chromatography–mass spectrometry , mycotoxin , grape wine , mass spectrometry , food science , pesticide residue , pesticide , biology , agronomy
BACKGROUND The assessment of ochratoxin A ( OTA ) in wine is relevant for food safety and its continuous control allows to reduce the risk of intake. Thus, a novel sensitive QuEChERS‐SPE (Quick, Easy, Cheap, Effective, Rugged and Safe – Solid Phase Extraction) pretreatment prior to liquid chromatography coupled to tandem mass spectrometry was developed for the determination of OTA in red wine samples from different grape‐growing regions in Argentine. RESULTS A sensitive methodology was achieved and thus the limits of detection and quantification were 0.02 and 0.05 µg L −1 , respectively. Recoveries ranged from 89.0% to 105.3%. The method was applied to 136 red wine samples (Argentina's flagship varieties: Malbec and Cabernet Sauvignon) from ten grape‐growing regions, during vintages 2013–2015. Although all of the samples investigated were contaminated with OTA (concentrations ranged from 0.02 to 0.98 µg L −1 ), the levels detected were lower than the maximum allowable concentration limit of 2.0 µg L −1 established by international regulations. CONCLUSION The methodology proposed is suitable for reliable OTA analysis in red wines. Similarly, the values obtained from the samples analyzed were in accordance with the current regulations and, as a consequence, preventive actions to reduce this mycotoxin incidence can be undertaken. © 2016 Society of Chemical Industry