Extraction of carotenes, vitamin E and other minor components from natural fats and oils with supercritical fluids

摘要

A process for the extraction of carotenes, vitamin E and other minor components such as squalene and phytosterols from natural oils and fats comprising the steps of: (I) preparing a concentrated mixture containing the carotenes, vitamin E and / or the (Ia) esterification and transesterification of the natural oils or fats with an alcohol and separation of the formed esters by vacuum distillation to obtain a concentrated mixture of carotenes, vitamin E and the other in minor amounts of constituents or (Ib) saponification of the natural oils or fats and subsequent separation of the saponified substances to form a concentrated mixture containing the carotenes, vitamin E and the other minor constituents, and (II) extraction of the carotenes, of vitamin E and / or the other in small amount vo constituents of the mixture obtained from step (I) with ...