Determination of Ochratoxin a in Cereals and Feed by SAX-SPE Clean Up and LC Fluorimetric Detection
作者:
A. Biancardi,
A. Riberzani,
期刊:
Journal of Liquid Chromatography & Related Technologies
(Taylor Available online 1996)
卷期:
Volume 19,
issue 15
页码: 2395-2407
ISSN:1082-6076
年代: 1996
DOI:10.1080/10826079608014025
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
We have developed a sensitive, reliable and highly specific method for the determination of ochratoxin A (OA) in cereals and animal feed. The samples were extracted in acidified acetonitrile and, they were then thoroughly purified by a new procedure combining a pH-controlled liquid-liquid partition with a strong anionic exchange solid-phase extraction. Both RP-TLC and RP-HPLC methods for semi-quantitative and quantitative determination have been described respectively, together with a RP-HPLC confirmation procedure, via conversion to OA-methyl ester. The TLC and HPLC determination limits were 8.0 ng/g and 0.10 ng/g respectively. The mean recovery from spiked samples was 95%.
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