• statistical modelling of oil expression from seed in Zambia
  • statistical modelling of oil expression from seed in Zambia
  • statistical modelling of oil expression from seed in Zambia
  • statistical modelling of oil expression from seed in Zambia
  • What factors affect oil yield during expression processing of oilseeds?
  • The literature indicates that pressure, temperature, pressing time and moisture content are the factors which affect oil yield during expression processing of oilseeds. Nearly all of the yield data reported correspond to hydraulic presses while the current technology, at least in the U.S.A., for expression processing is the screw press.
  • What are the pre-pressing operations for oil expression?
  • Generally, the recommended pre-pressing operations for oil expression include grinding or flaking and then cooking pre-cleaned oilseeds. The literature indicates that pressure, temperature, pressing time and moisture content are the factors which affect oil yield during expression processing of oilseeds.
  • Does conditioning of Jatropha curcas seeds affect the yield of oil?
  • The effect of conditioning of Jatropha curcas L. seeds on the yield of oil extracted by screw pressing was studied. A pressing test was performed with seeds without heating treatment and the extraction yield was 84.0%.
  • 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 seed production affect oil extraction process?
  • The increase in the quantity of seed being slightly lower than the increase in oil production, it demonstrates an improvement of oil extraction processes. Generally, the oil extraction is based on two main steps: pressing (solid–liquid expression) and solvent extraction.
  • Are screw presses still used in oilseeds milling?
  • In oilseeds milling industry, these presses have gradually been replaced by screw presses. The first screw press was invented by Anderson in 1902 and was steadily improved since. Generally, the screw press contains a helical screw rotating in a barrel.