期刊
FOOD AND CHEMICAL TOXICOLOGY
卷 48, 期 3, 页码 877-882出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fct.2009.12.026
关键词
Ochratoxin A; Urine; Human exposure; HPLC; Immunoaffinity column clean-up
资金
- Scientific and Technological Research Council of Turkey [105S412]
- Dicle University
- Ege University
- Marmara University
In this study, ochratoxin A (OTA) occurrence and level in human urine samples, collected from four different regions of Turkey was analyzed by NaHCO3 dilution, immunoaffinity column clean-up and high-performance liquid chromatography with fluorescent detection. For the repeatability of the method, RSD (%) values were found between 3.83 and 8.86, for the accuracy, the recovery values were found between 85.7% and 110.5% and limit of detection and limit of quantification of the method were measured as 0.006 and 0.018 ng mL(-1) respectively. For the analysis. first morning urine samples were collected and the results were adjusted with creatinine levels. From the total collected samples of 233 larger amounts of 83% was contaminated with OTA. Among the calculated to be OTA levels, positive sample rate, average OTA amount and the highest contamination was found in Ankara. (Positive sample rate; 90.1%, average OTA concentration; 14.34 ng g(-1) creatinine and highest OTA value; 75.60 ng g(-1) creatinine). In order to define the exposure profile of OTA in human a questionnaire was conducted among the voluntaries as well. But related to the gender. age, dietary habits, coffee consumption, smoking and alcohol habits of the volunteers, no correlation was found with the OTA exposure. (C) 2010 Elsevier Ltd. All rights reserved.
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