| الوصف: |
Biljna ulja su esteri trovalentnog alkohola glicerola i masnih kiselina i dobivaju se iz uljarica. S obzirom na tehnologiju proizvodnje biljna ulja se dijele na: rafinirana, hladno prešana i djevičansko. Proizvodnjom hladno prešanog ulja, postupkom prešanja na kontinuiranoj pužnoj preši dobiju se tri proizvoda: sirovo ulje, pogača i uljni talog. Pripremanje sirovine za preradu se odvija u nekoliko faza: čišćenje, ljuštenje i mljevenje sjemenki. Prešanje sjemenki se provodi hidrauličkim ili pužnim prešama. Nakon prešanja sjemenki, dobije se sirovo ulje koje odlazi dalje na proces pročišćavanja, a ti procesi su: filtracija, sedimentacija, centrifugalna separacija. Sojino ulje se zbog visokog sadržaja nezasićenih masnih kiselina koristi u različite tehničke svrhe, kao što su: štamparske boje, alkidne smole i drugo. Vegetable oils are esters of the trivalent alcohol glycerol and fatty acids and are obtained from oilseeds. Depending on the production technology, vegetable oils are divided into: refined, cold pressed and virgin. The production of cold-pressed oil, the process of pressing on a continuous screw press produces three products: crude oil, bread and oil sludge. The preparation of raw materials for processing takes place in several stages: cleaning, peeling and grinding the seeds. Seed pressing is carried out by hydraulic or screw presses. After pressing the seeds, a crude oil is obtained which goes on to the purification process, and these processes are: filtration, sedimentation, centrifugal separation. Due to the high content of unsaturated fatty acids, soybean oil is used for various technical purposes, such as: printing inks, alkyd resins and others. |
