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- W2186558488 abstract "The presence of fungi from Aspergillus and Penicillium genera in grapes for wine production can lead to Ochartoxin A (OTA) contaminations, a mycotoxin internationally recognized as nephrotoxic and possibly carcinogen to humans. The experiment evaluated the presence of OTA trough Thin Layer Chromatography (TLC) with Charge Coupled Detector (CCD) in 88 wines from the south region of Brazil, 2009 vintage. Samples were divided in 75 originated from Rio Grande do Sul state, 9 from Santa Catarina and 4 from Parana, 56 made from Cabernet Sauvignon and 32 from Merlot. OTA was determined trough analysis of acquired images and quantified with the software ImageJ. Two different clean-up were tested for recovery verification. The mean recovery with immunoaffinity column (IAC) was 82.33%. The mean recovery for analysis with NaHCO3 1.25% clean-up was 76.95. The quantification and detection limits were 0.8 μg/L e 0,2 μg.L, respectively. The results shown 5 OTA contaminated samples, with 5.68% incidence. Cabernet Sauvignon variety had 3 positive samples and Merlot had 2. The highest concentration found was 0.84 μg.L, in one of three positive samples from Rio Grande do Sul. Santa Catarina e parana had one positive sample each, and concentrations below the quantification limit." @default.
- W2186558488 created "2016-06-24" @default.
- W2186558488 creator A5036456947 @default.
- W2186558488 date "2011-01-01" @default.
- W2186558488 modified "2023-09-27" @default.
- W2186558488 title "UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL - UFRGS INSTITUTO DE CIÊNCIA E TECNOLOGIA DE ALIMENTOS - ICTA PROGRAMA DE PÓS-GRADUAÇÃO EM CIÊNCIAS E TECNOLOGIA DE ALIMENTOS - PPGCTA DETERMINAÇÃO DE OCRATOXINA A EM VINHOS DA REGIÃO SUL DO BRASIL ATRAVÉS DA CROMATOGRAFIA EM CAMADA DELGADA COM DETECTOR DE CARGA ACOPLADA" @default.
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