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  • What is rapeseed pressing & processing?
  • Rapeseed (Canola) Pressing/Processing, Sunflower Pressing/Processing - 200 Tons of Seeds Per Day. A perfect combination of mechanical and thermal processing. It employs the benefits of extrusion for the subsequent pressing step (increasing oil yield). One-level pressing with extrusion is a technology specially developed for processing soybeans.
  • What is industrial pressing of oilseeds?
  • Industrial pressing of oilseeds is realized using continuous screw presses. The presses are fed with crude or pre-treated seeds. Types of pre-treatments (thermal pre-treatment, size reduction, mechanical sieving, etc.) differ for various seed species (Carr 1997). Each type of seed pre-treatment provides its own advantages.
  • How does moisture affect rapeseed pressing performance?
  • Besides its effect on the pressing performance, the moisture content also affects the process parameters. Thus, during pressing of rapeseed, an increase in seed moisture content causes an increase in the maximum pressure observed and a decrease in barrel temperature (Vadke and Sosulski 1988).
  • Does water content affect rapeseed oil yield?
  • For the rapeseed, a decrease in oil yield with higher water content was observed in continuous pressing (Grosleron 2009; Vadke and Sosulski 1988), while in discontinuous process (in the same range of water content), the oil yield increases (Koo 1942; Lanoisellé 1995).
  • What is a screw press expeller?
  • The expellers (named after the first screw press founded by Anderson in 1902) are the screw presses most often encountered in the industry. They consist of a screw rotating in a horizontal perforated barrel formed by regularly spaced metal bars (this space can vary from 0.5 to 0.1 mm); the oil flows along the barrel.
  • What is the composition of rapeseeds?
  • Materials Rapeseeds ( Alizze) were purchased from a seed producer. The used seeds are food grade as they do not contain euricic acid and have a low glucosinolate content (13 mg/100 g). Their composition is: 9.0% ± 1.2 moisture, 36.0 wt % ± 1.3 of oil and 18.0 wt % ± 0.7 of protein in wet basis.