Method for separating neutral and polar lipids and an oil rich in polar lipids

摘要

A method for separating neutral and polar lipids from an oil of biological material, wherein the oil is fractionated using a mixture of a polar solvent comprising at least one carbon atom, water and an additional substance selected from the group consisting of: mono-, di- and oligosaccharides comprising from 3 to 10 monosaccharide units, said additional substance is present in an amount of at least 0.1 wt % calculated on the total weight of solvent, water and additional substance, to form at least two liquid fractions having different densities, wherein one fraction is rich in polar lipids and another fraction is rich in neutral lipids. An oil rich in polar lipids obtained from the method is disclosed, said oil I contains at least 40, preferably at least 50 lipid % polar lipids as calculated on the total amount of lipids in said oil and that the total amount of polar solvent and water in said oil is between 20 and 30 wt %. An oat oil containing high amounts of estolides of DGDG can further be obtained.

主权项

1. A method for separating neutral and polar lipids from an oil of biological material, wherein said method comprises:
(a) providing said oil of biological material, and (b) contacting said oil of biological material with a mixture of a polar solvent to fractionate lipids from of said oil of biological material to form at least two liquid fractions having different densities, wherein one fraction is rich in polar lipids and another fraction is rich in neutral lipids, wherein said mixture of said polar solvent comprises at least one carbon atom, water, and an additional substance selected from the group consisting of: mono-, di- and oligosaccharides comprising from 3 to 10 monosaccharide units, wherein said additional substance is present in an amount of at least 0.1 wt % calculated on the total weight of solvent, water, and additional substance.