Differences in the Compositions of Vitamin E Tocochromanol (Tocopherol and Tocotrienol) in Rice Bran Oils Produced in Japan and Other Countries

In this study, we investigated the compositions of vitamin E tocochromanol [tocopherol (Toc) and tocotrienol (T3)] in crude refined rice bran oil (RBO) produced Japan other countries, including Brazil, Thailand, Vietnam, based on high-performance liquid chromatography analysis. All RBO analyzed contained ?-, ?- ?-Toc ?- ?-T3. Japanese RBO, although not also ?-T3. Furthermore, total Toc contents both oils were found to be higher than those from countries. Total T3 similar Brazil Vietnam. The ?-Toc ?-T3 considerably whereas contrast, ?-T3 lower. Consequently, ratios (1.75 1.91, respectively) notably Similarly, These results accordingly indicate that ratio could used as an effective index discriminate between