A process for preparing vegetable oil fractions rich in non-tocolic, high-melting, unsaponifiable matter

摘要

A process for preparing a vegetable oil fraction rich in non-tocolic, high-melting, unsaponifiable matter which comprises the following steps: (a) a vegetable oil, or a fraction thereof, having a slip melting point of not more that 30OC and a content of unsaponifiable matter of at least 0.5% by weight is hydrogenated to fully saturate the fatty acids of the glycerides and to reach a slip melting point of at least 57OC; (b) to the hydrogenated oil is added from 1 to 75% by weight of the unhydrogenated starting oil or another oil having a slip melting point of max 30OC to act as a carrier and vehicle for the unsaponifiable matter; (c) to the oil mixture from (b) is added a solvent in a ratio from 1:2 to 1:20, and the mixture is heated to transparency; (d) the mixture from (c) is cooled in one or more steps to a final temperature in the range from -35 to +30OC, and the precipitated high-melting fraction(s) is (are) filtered off; (e) the filtrate obtained from (d) is desolventised, leaving a fraction rich in unsaponifiable matter. By this process very high concentrations of in particular the non-tocolic, higher melting unsaponifiables can be achieved, and the composition of the glyceridic part of the enriched fraction can be tailored to specific applications.