The application discloses a method for extracting antidepression active
Euphausia superba oil by adopting subcritical combination
solvent, and belongs to the technical field of
deep processing of
Euphausia superba. The method is a three-stage gradient extraction method of "subcritical
butane-
acetone-
ethanol", and realizes differential separation and enrichment of lipid components by using
solvent polarity difference. The first-stage subcritical
butane extraction is carried out under low temperature, closed and
oxygen isolation conditions, and high-efficiency desolventizing is realized by using reduced pressure gasification, so that the heat-sensitive active ingredients are effectively reserved, and meanwhile, oxidation and
metamorphosis of raw materials are avoided, thereby laying a foundation for preparation of subsequent high-quality extracts. The method successfully prepares three
Euphausia superba oil products with significant component differences, and especially, the third-stage extract and the enzymatic modification product thereof exhibit excellent antidepression activity. The application realizes functional separation of Euphausia superba lipid components, and provides strong support for development of personalized and diversified antidepression products.