Abstract: A method for preparing a dispersion of polar lipids in an ethanol-water mixture, the polar lipids including galactolipids. An oil containing polar lipids including galactolipids is diluted using a first ethanol-water mixture having an ethanol concentration close to the critical polarity, wherein upon dilution the polar lipids form a lamellar liquid-crystalline phase, without first forming a hexagonal HII-phase. The invention also refers to an oil obtained by evaporating ethanol and water from the dispersion. The invention further refers to aqueous colloidal dispersions of polar lipids including galactolipids, to an oil containing polar lipids including galactolipids and to pharmaceutical, cosmetic and food compositions including such dispersions and/or oil.

Abstract: 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.

Abstract: A method for preparing a dispersion of polar lipids in an ethanol-water mixture, the polar lipids including galactolipids. Anoil containing polar lipids including galactolipids is diluted using a first ethanol-water mixture having an ethanol concentration close to the critical polarity, wherein upon dilution the polar lipids form a lamellar liquid-crystalline phase, without first forming a hexagonal HII-phase. The invention also refers to an oil obtained by evaporating ethanol and water from the dispersion. The invention further refers to aqueous colloidal dispersions of polar lipids including galactolipids, to an oil containing polar lipids including galactolipids and to pharmaceutical, cosmetic and food compositions including such dispersions and/or oil.

Abstract: 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.

Abstract: Process for the hydrogenation of functional groups in hydrogenatable substrates, wherein hydrogen gas is mixed with the substrate and a solvent, the mixture is brought into contact with a catalyst. The hydrogenation is carried out under process conditions which are adapted to the activity of the catalyst used, wherein the temperature is sufficiently low, the substrate concentration is sufficiently high and the diffusivity is sufficiently high to provide a selective hydrogenation of the functional group having a higher reactivity than one which has a lower reactivity. The functional groups can for example comprise different C?C-groups in substrates in the form of lipids, primarily fatty acids and fatty acid derivatives, such as triglycerides and methyl fatty acids. Partially-hydrogenated fatty acids/fatty acid derivatives can hereby be obtained, which possess a low content of trans-fatty acid content as well as high selectivity in the form of SLn-number and SLo-number.

Abstract: A partially hydrogenated fatty substance produced by partial hydrogenation of a substrate, such as vegetable, animal or marine oil, said partially hydrogenated substance having a low content of trans fatty acids. When the hydrogenation degree is below 30% the trans-fatty acid concentration can be expressed in the following way: trans≦0.3×(initial IV—IV) in %. of the total amount of fatty acids, wherein IV refers to iodine value. When the hydrogenation degree is between 30 and 70% the trans-fatty acid concentration can be expressed with: trans≦0.09×initial IV in % of the total amount of fatty acids. The partial hydrogenation is performed by a process in which the substrate, hydrogen gas and a solvent are mixed, and the whole mixture is brought into a supercritical or near-critical state. This substantially homogeneous super-critical or near-critical solution is led over the catalyst, whereby the reaction products formed, i.e.

Abstract: A typical traditional reactor for hydrogenation consists of a tank filled with a liquid and a gas and a small particle catalyst. The reaction is carried out at high pressures and high temperatures. Lack of gas on the catalyst surface limits the velocity of reaction. Much work has been done to increase the quantity of gas on the catalyst. It has not been possible to solve this problem effectively with the techniques of today. According to the invention an extra solvent is added to the reaction mixture. By bringing the whole mixture (solvent, substrate, hydrogen and reaction products) to super-critical or near-critical state, a substantially homogeneous mixture can be obtained. By this method it is possible to control the concentration of gas on the catalyst to the desired level. The velocity of reaction is thereby increased considerably. The hydrogenation reactions principally involved comprise hydrogenation of carbon-carbon double bonds (C.dbd.