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Nine tocopherol derivatives including four tocopherols, four tocotrienols, and one esterified form of α-tocopherol acetate were analyzed using ultra-high-performance supercritical fluid chromatography (UHPSFC) with diode array detection. The separation was carried out on BEH 2-EP column using shallow gradient elution of 1–4% methanol and CO2 in 5 min. Complementary ultra-high-performance liquid chromatography...
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