Determination of tomatine in foods by liquid chromatography after derivatization
β Scribed by Kayoko Takagi; Masatake Toyoda; Megumi Shimizu; Tomomi Satoh; Yukio Saito
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 410 KB
- Volume
- 659
- Category
- Article
- ISSN
- 1873-3778
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A method is proposed for the separation of nitriles from other functional groups by derivatization. The resulting O-carboxamide amidoxime derivative of the nitrile is then identified by the use of HPLC retention times. The method has been successfully applied to isomeric monocyanopyridine and cyanot
The mean values of alpha and beta-carotene of 10 fruits and vegetables from supermarkets in Cairo and Alexandria have been determined using HPLC method, and the average vitamin A activities (in retinol equivalents) calculated. Carrots, spinach and sweet potatoes were the best sources of provitamin A