Determination of ochratoxin A in regional samples of cow's milk from Germany
作者:
Hana Valenta,
Michael Goll,
期刊:
Food Additives & Contaminants
(Taylor Available online 1996)
卷期:
Volume 13,
issue 6
页码: 669-676
ISSN:0265-203X
年代: 1996
DOI:10.1080/02652039609374452
出版商: Taylor & Francis Group
关键词: ochratoxin A;cow's milk;mycotoxin;analysis
数据来源: Taylor
摘要:
Samples (121) of cow's milk from a northern region of Germany were analysed for the occurrence of ochratoxin A by means of a sensitive high‐performance liquid chromato‐graphic (HPLC) method. The samples were extracted with a mixture of chloroform and methanol at pH < 2. The extracts were cleaned up by solid‐phase extraction on silica gel cartridges. The detection limit was 001 ng/ml, the quantitation limit was estimated at 0.03 ng/ml. The mean recovery from spiked samples was 84 ± 7% in the concentration range of 0.03–0.5 ng/ml. An enzyme‐linked immunosorbent‐assay (ELISA) was shown to be suitable for the confirmation of ochratoxin A levels down to the detection limit of the HPLC method. No ochratoxin A was detected in the samples analysed, either by HPLC or by ELISA.
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