The concentration of tocopherols from natural sources by molecular distillation

Abstract

A laboratory model cyclic falling-film molecular still has been constructed and has been used to prepare mixed tocopherol concentrates from various seed oils. The choice of an oil for preparing a concentrate of a particular potency is discussed.

High Vacuum Distillation.

“…Turning now to studies with the molecular still, a complete account of distillation of tocopherol-bearing oils is offered by Green and Watt (15). Using the cyclic-batch still of Hickman, the elimination techniques of Embree and Hickman, and much of the data of Baxter, Rawlings, and associates, they succeed in pointing to the disturbing fact that the elimination maximum of the mixed tocopherols occurs at quite different temperatures according to the oil of origin.…”