Vegetable Oil Refining

Rafinacija je proces uklanjanja nepoželjnih negliceridnih sastojaka različitog sastava iz sirovog ulja nastalog prešanjem ili ekstrakcijom, kako bi se očuvala senzorska svojstva i održivost ulja. Osim nepoželjnih sastojaka, uklanjaju se i poželjni sastojci poput vitamina, provitamina, antioksidansa i dr. Kako bi se tijekom prerade ulja sačuvali ovi sastojci, postupak rafinacije potrebno je provoditi što kraće vrijeme, na nižim temperaturama pri visokom vakuumu. Osim kvalitete proizvoda, postupkom rafinacije povećava se i iskorištenje proizvoda, a samim time i ekonomičnost proizvodnje dobivenog ulja. Metodologijom proučavanja znanstvene i stručne literature u radu se opisuje tehnološki proces rafinacije ulja koji se sastoji od sljedećih faza: deguminacija, neutralizacija, dekolorizacija, vinterizacija, dezodorizacija i bistrenje ulja.Refining is the process of removing undesirable non-glyceride ingredients of different composition from crude oil formed by pressing or extraction, to preserve the sensory properties and sustainability of the oil. In addition to undesirable ingredients, desirable ingredients such as vitamins, provitamins, antioxidants, etc. are also removed. To preserve these ingredients during oil processing, the refining process should be carried put as short as possible, at lower temperatures at high vacuum. In addition to the quality of the product, the refining process also increases the yield of the product, and thus the economy of production of the obtained oil. The methodology of studying the scientific and professional literature in this paper describes the technological process of oil refining, which consists of the following phases: degumifiaction, neutralization, decolorization, winterization, deodorization and clarification of oil