Capillary Gas Chromatographic Determination of Thiabendazole in Citrus and Apple Juices
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Liquid chromatographic method for determination of patulin in clear and cloudy apple juices and apple puree: collaborative study.
A collaborative trial was conducted to validate the effectiveness of a liquid chromatographic (LC) procedure for determination of patulin in both clear and cloudy apple juices and apple puree. The test portion of clear apple juice was directly extracted with ethyl acetate; cloudy apple juice and apple puree were treated with pectinase enzyme before extraction. After back-extraction into sodium ...
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A method for the determination of total bile acids in human feces that is suitable for routine application is described and discussed. Bile acids are extracted from freezedried feces with acetic acid and toluene, in the presence of the i?ternal standard 23-nordeoxycholic acid. After saponification of the extract, bile acids and the internal standard are methylated and converted by mild chromic ...
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ژورنال
عنوان ژورنال: Journal of AOAC INTERNATIONAL
سال: 1994
ISSN: 1060-3271,1944-7922
DOI: 10.1093/jaoac/77.5.1293