CONTENT OF TOCOPHEROL ISOMERS IN OILSEED RADISH CULTIVARS
 
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Pol. J. Food Nutr. Sci. 2009;59(2):129–132
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ABSTRACT
Three oilseed radish (Raphanus sativus [cv. Daikon, China Rose, and German]) cultivars from two research farms in Saskatchewan, Canada, were analysed for their tocopherol contents. The findings were compared to tocopherol levels determined in an oriental mustard, a field mustard, a canola, and an arugula cultivar. HPLC data revealed that the oilseed radish cultivars were devoid of both α- and β-tocopherol, but contained γ-tocopherol at levels similarly found in many canola varieties (i.e., 11.4 mg/100 g seed). In addition, they possessed a small content of δ-tocopherol (~1-1.4 g/100g seed). Application of a YMC™ Carotenoid (C30) column successfully separated and allowed quantification of all tocopherol isomers using reversed-phase HPLC with UV detection in <15 min.
ISSN:1230-0322