• What is the mass flow rate of pressed rapeseed oil?
  • The temperature of the pressed oil at the exit from the press was 40 ¡ãC. The mass flow rate of the press cake and pressed rapeseed oil under these pressing conditions were 174?¡À?22 g/min and 52.7?¡À?0.1 g/min, respectively. Optimization of screw-pressing process factors can involve the oil recovery yield or quality properties.
  • How is rapeseed oil obtained?
  • Rapeseed oil was obtained by cold pressing in a laboratory hydraulic press (Sirio, Mikodental, 10-ton strength, 40 MPa maximum pressure) at room temperature. The procedure was done in triplicate. Upon pressing, oil samples were immediately analyzed.
  • Can rapeseed oil be used in a pressure system?
  • The system is, however, limited in its application to products with a low oil content. Seeds with a high oil content (>40%), such as rapeseed and sunflower seeds, do not usually allow sufficient pressure build-up in the units to achieve similar effects as seen with soybeans .
  • What is the acid value of cold pressed rapeseed oil?
  • The produced crude cold-pressed rapeseed oil has an acid value of 2.9?¡À?0.2 mg KOH/g, within the range for oils originating worldwide. Peroxide value, an indicator of the oxidation of oils, determines their quality, stability, and market value. Only oils with low peroxide values are suitable for human consumption.
  • Why does rapeseed oil have a low an?
  • An increase in the phosphorus content in crude rapeseed oil deteriorates the separation of oil from soapstock during refining, leading to higher losses of neutral fat that turns to soapstock. This presence of neutral fat in soapstock results in a lower acidity number (AN).
  • How is pressed rapeseed oil yield analyzed?
  • Experimentally obtained values of the pressed rapeseed oil yield were analyzed by the RSM, which includes the nonlinear regression method to define the extended quadratic equation and the ANOVA to evaluate the significance of the developed model, the individual factors, interactions, and the goodness of fit at a 95% confidence level.