Patent ID: 8957232
Filing Date: 2015-02-17
Classification: A23L,A61P,B01D,C11B,C11C

Abstract:
1. A method for extracting an unsaponifiable fraction contained in a vegetable oil, an oil from a microorganism or a vegetable butter, or in a by-product of the industry involved in the refining of vegetable oils or oils from microorganisms, comprising at least: A) converting said oils, said butter or said by-product of the industry involved in the refining of vegetable oils or oils from microorganisms to a aqueous-alcoholic solution, by a step selected from saponification and esterification, B) extracting the aqueous-alcoholic solution in which the fat fraction is separated from the unsaponifiable fraction by liquid-liquid extraction, C) optionally, purifying the unsaponifiable selected from the group comprising crystallization and liquid-liquid extraction, wherein at least one step among the liquid-liquid extraction of step B, crystallization of step C and liquid-liquid extraction of step C is carried out with a first solvent system comprising a solvent content selected from fluorinated aromatic solvents, tert-butyl ethers, solvents comprising at least one silicon atom, methyl-tetrahydrofuran (MeTHF), and mixtures thereof of at least 50% by volume in relation to the total volume of the solvent system.