Patent ID: 9237762
Filing Date: 2016-01-19
CPC Classification: A23D,A61K,A61Q

Claim Text:
1. A method for preparing an aqueous colloidal dispersion of polar lipids in an ethanol-water mixture, comprising: (i) diluting an oil containing polar and non-polar lipids with an ethanol-water mixture, said mixture having an ethanol concentration, calculated as volume % based on the total amount of ethanol and water, in the range of from 15 volume % units below the critical polarity of the ethanol-water mixture with respect to said oil to 15 volume % units above said critical polarity, wherein the critical polarity of said ethanol-water mixture is in the range of 25-75 volume % ethanol in the water-ethanol-mixture, and wherein said polar lipids comprise galactolipids and are of a type that will form a hexagonal HII-phase at direct water exposure; and (ii) upon said dilution with the ethanol-water mixture, forming a lamellar liquid-crystalline phase in the form of liposomes, without first forming a hexagonal HII-phase, wherein the liposomes comprise at least 50 lipid % of polar lipids and at least 2 lipid % of non-polar lipids, the lipid % being the weight % based on the total amount of lipids.