How is EVENING PRIMROSE oil extracted
(1) carrying out cleaning and mechanical crushing on evening primrose seeds, adding water to mix to obtain a mixing solution, and carrying out an ultrasonic wall breaking pre-treatment on the mixing solution by using an ultrasonic cell disrupter;
(2) adding protease to the ultrasonic treated mixing solution to carry out enzyme digestion to obtain an enzyme digestion solution;
(3) carrying out centrifugal separation on the enzyme digestion solution to obtain free oil, an emulsion, a hydrolysis solution and residue, carrying out repeated water washing and centrifugal separation on the residue to obtain the free oil and the emulsion, carrying out emulsion breaking on the emulsion to obtain the free oil, and mixing all the obtained free oils to obtain the evening primrose oil.