A comparison of ELISA and HPLC methods for determination of ochratoxin A in human blood serum in the Czech Republic

被引:42
|
作者
Dohnal, Vlastimil [1 ]
Dvorak, Vladimir [2 ]
Malir, Frantisek [2 ]
Ostry, Vladimir [3 ]
Roubal, Tomas [4 ]
机构
[1] Univ Hradec Kralove, Fac Sci, Dept Chem, CZ-50003 Hradec Kralove, Czech Republic
[2] Univ Hradec Kralove, Fac Sci, Dept Biol, CZ-50003 Hradec Kralove, Czech Republic
[3] Ctr Hlth Nutr & Food Brno, Natl Inst Publ Hlth Prague, CZ-61242 Brno, Czech Republic
[4] Inst Publ Hlth Hradec Kralove, Natl Reference Lab Biomarkers Mycotoxins, CZ-50002 Hradec Kralove, Czech Republic
关键词
Ochratoxin A; ELISA; HPLC; Serum; FLUORESCENCE DETECTION; NEPHROPATHY PATIENTS; BIOMARKERS; EXPOSURE;
D O I
10.1016/j.fct.2013.09.010
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Ochratoxin A (OTA) is one of the most naturally occurring fungal toxins in food. It has been detected in high concentrations in serum samples of nephropathic patients and can be applied as one of the markers of potential risk of this disease. Also, OTA can cause adverse effects on human health such as genotoxicity and is anticipated to be a potential human carcinogen. In this study, enzyme-linked immunosorbent assay (ELISA) and high performance liquid chromatography (HPLC) were applied in analysis of 115 blood serum samples of women in the child rearing age from the Czech Republic and both methods were compared. The OTA was presented in a broad range of concentrations from 0.037 to 1.130 mu g/L. The outcome of ELISA and HPLC measurements were well correlated (r = 0.907). However, it was observed that ELISA tend to result in underestimating the OTA level at the low serum concentrations. Both methods had the same limits of quantification of 0.050 mu g/L under standard operation conditions. When OTA concentration in a sample was too low, the sample was redissolved in only 300 mu L. of methanol and the detection limit for HPLC was lowered to 0.0301 mu g OTA/L. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:427 / 431
页数:5
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