Assessment of ochratoxin A and tenuazonic acid in Canadian ice-wines |
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| Authors: | D Abramson P Delaquis D Smith |
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| Institution: | (1) Cereal Research Center, Agriculture and Agri-Food Canada, 195 Dafoe Road, R3T 2M9 Winnipeg, MB, Canada;(2) Pacific Agri-Food Research Center (PARC), Agriculture and Agri-Food Canada, 4200 Highway 97, 1Z0 Summerland, VOH, Canada;(3) Cereal Research Center, Agriculture and Agri-Food Canada, 195 Dafoe Road, R3T 2M9 Winnipeg, MB, Canada |
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| Abstract: | Twenty-six samples of commercial ice-wine made from late-harvested grapes were assayed for the mycotoxins ochratoxin A and
tenuazonic acid. Canadian wines originated in British Columbia (18) and Ontario (8). For comparison two German wines from
Hesse were also studied. Four additional samples of research ice-wine originating in were also studied. In all wine samples,
assays using immuno-affinity chromatography and fluorescence liquid chromatography indicated ochratoxin A below 0.15 μg/L,
the limit of determination of the method. Tenuazonic acid was determined by solidphase micro-extraction and liquid chromatography
and was below the limit of determination (70 μg/L) in all samples. The European Union food tolerance limit for ochratoxin
A in wine is 2 μg/L. A tolerance for tenuazonic acid has not yet been established. |
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| Keywords: | ice-wine ochratoxin A tenuazonic acid |
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