Abstract
The exposure of general population in Croatia to mycotoxin ochratoxin A (OTA) was investigated in five cities: Split, Rijeka, Varaždin, Osijek, and Zagreb. In June 1997, blood donors from each of these cities gave 50 samples of 3 ml plasma each. The mean concentration of OTA, determined using high-pressure liquid chromatography (HPLC), was 0.39 ng/ml of plasma. The highest frequency of OTA-positive samples (>0.2 ng/ml plasma), and the highest number of samples with the concentration exceeding 1.0 ng/ml, were found in Osijek. This difference is probably due to the higher consumption of fresh and dried pork by population of Osijek. The calculated daily intake of OTA, estimated from the mean OTA concentration of all samples in each town (in the range from 0.24 to 0.91 ng/kg b.w. found in Rijeka and Osijek, respectively) is lower than the tolerable daily intake proposed by Joint FAO/WHO Expert Committee on Food Additives (1995) of 16.0 ng OTA/kg b.w.
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