The Determination of alpha-Tocopherol in Animal Tissues by Column Chromatography.

Abstract
A rapid method for the chromatographic separation and quantitative determination of small amounts of [alpha]-tocopherol in the unsaponifiable matter of animal tissue is described. The unsaponifiable material from 0.5 [long dash]1.5 g of tissue, containing 1[long dash]20 [mu]g of [alpha]-tocopherol, is put on a 0.5 x 5 cm column packed with a mixture of activated alumina, zinc carbonate and Celite. Twenty per cent benzene in cyclohexane is passed through the column and eight fractions of 1 ml are collected. The Emmerie-Engel reaction is performed on each fraction. [alpha]-Toco-pherol separates sharply in 3[long dash]4 fractions free of other reducing substances.

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