The present invention relates to a process for extracting an unsaponifiable fraction contained in an oil or a vegetable butter, in an oil from a microorganism, in a concentrate of oil or vegetable butter or oil from a micro-organism, or in a by-product of the vegetable oil refining industry, such as deodorization break-ups and physically refined distillates, or oils derived from micro-organisms, comprising at least: A) a step of processing said oils, said butter or said co-product of the refining industry of vegetable oils or oils derived from microorganisms in aqueous-alcoholic solution, in particular via a saponification step and B) a step of extraction of the hydro-alcoholic solution in which the fat fraction is separated from the unsaponifiable fraction by a liquid / liquid extraction, said process being characterized in that at least the step of The liquid / liquid process of step B is carried out using a first solvent system comprising a solvent content selected from solvents comprising at least 5 carbon atoms and one or two oxygen atoms in the form of either ether or ketone function, or ester function, at least 50% by volume relative to the total volume of the first solvent system, as well as fractions obtained by said method.La présente invention concerne un procédé d'extraction d'une fraction insaponifiable contenue dans une huile ou un beurre végétal, dans une huile provenant d'un micro-organisme, dans un concentrât d'huile ou de beurre végétal ou d'huile provenant d'un micro-organisme, ou dans un co-produit de l'industrie du raffinage des huiles végétales, tel que les échappées de désodorisation et les distillais de raffinage physique, ou des huiles provenant de micro-organismes, comprenant au moins : A) une étape de transformation desdites huiles, dudit beurre ou dudit co-produit de l'industrie du raffinage des huiles végétales ou des huiles provenant de micro-organismes en solution hydro-alcoolique, notamment via une étape de saponification et B) une ét
