The invention relates to a refining method of low trans-
fatty acid compound oil. According to a formula, various raw oil in a
nutrition compound oil is compounded in the corresponding proportion, and then the refining working procedures of a hydration degumming working procedure, a deacidifying working procedure, a decoloring working procedure, a deodorizing working procedure, a dewaxing working procedure, a
degreasing working procedure, a filtering working procedure, a
nitrogen-filled packaging working procedure and the like are performed, and in the
processing of refining, the temperature of the deodorizing step is controlled to be 210-225 DEG C, the degree of vacuum is maintained to be 0-10mmbar, and the deodorizing time is 15-20 minutes, so that the trans-
fatty acid in finished products is ensured to be lower than 1%, and each index conforms to the standard of international first-class oil of a corresponding oil product. The refining method disclosed by the invention has the benefits that in accordance with the nutritional requirements of different
crowds of mid-aged people and aged people, pregnant women, babies, and the like, the components in different fat in the formula are regulated, so that the composition of
fatty acid in the products is regulated; therefore, the
concoction of
vegetable oil, with a certain
specific function, can ensure that the trans-fatty acid in products is low in content.