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  • Title: Natural occurrence of ochratoxin A in dried figs.
    Author: Karbancioğlu-Güler F, Heperkan D.
    Journal: Anal Chim Acta; 2008 Jun 09; 617(1-2):32-6. PubMed ID: 18486638.
    Abstract:
    Ochratoxin A (OTA) contamination in dried figs was investigated using high performance liquid chromatography (HPLC) with fluorescence detection after extraction with methanol and orthophosphoric acid and clean up by an immunoaffinity column. The limit of detection for OTA was 0.12 microg kg(-1). One hundred and fifteen samples were taken during the drying stage from 7 different districts in the Aegean Region in 2003 and 2004. Fifty-five (47.2%) of the 115 samples were found to contain detectable levels of ochratoxin A, ranging from 0.12 to 15.31 microg kg(-1). However, the OTA level for a majority of the samples was low, with only 4 samples containing OTA exceeding 1 microg kg(-1). The calculated overall median for the OTA level was below the limit of detection and the overall mean was estimated as 0.52 microg kg(-1). Frequency of ochratoxin A contamination in dried figs harvested in 2003 and 2004 are 47 and 50%, respectively. Highest contamination ratio was determined in dried figs from Erbeyli (60%), followed by Selcuk (56%), and Ortaklar (50%).
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