Procedure for extracting an unsaponifiable fraction contained in an oil or vegetable shortening, in an oil that comes from a microorganism, in an oil or vegetable shortening concentrate or from oil that comes from a microorganism, or in a co-product of the refining industry of vegetable oils, such as deodorization leaks and distillates of physical refining, or oils derived from microorganisms, comprising at least: A) a stage of transformation of said oils, said butter or said co-product of the refining industry of vegetable oils or oils derived from microorganisms in hydroalcoholic solution, in particular through a saponification stage, A ') a step of adjusting the alcohol title of the hydroalcoholic solution obtained at the end of stage A), and B) a step of extracting the hydroalcoholic solution in which the fatty fraction is separated from the insaponific fraction capable by a liquid / liquid extraction, said process being characterized in that at least the liquid / liquid extraction stage of stage B is carried out using a first solvent system comprising a solvent content selected from among the solvents comprising at least 5 carbon atoms, and one or two oxygen atoms, in the form of either an ether function, or a ketone function, or an ester function, of at least 50% by volume with respect to the total volume of the first solvent system, said solvents being selected from among the methyl ketones, in particular methyl isobutyl ketone (MIBK), 2-heptanone, propionates, in particular ethyl propionate, n-butyl propionate, isoamyl propionate, propyl ethers, in particular diisopropyl ether (DIPE), and mixtures thereof, characterized in that, after stage A, stage A 'for adjusting the alcohol title of the hydroal solution Coholic allows to obtain a degree in alcohol between 10 and 50% by mass.Procedimiento de extracción de una fracción insaponificable contenida en un aceite o una manteca vegetal, en un aceite que procede de un microorganismo, en un concentrado de aceite o
