• How do you extract oil from seeds?
  • The two most common processes to extract oil for most seeds, beans, and nuts is the Full Press Extraction Process where mechanical screw presses are used to extract the oil by squeezing the oil under high pressure, and the Preparation/Solvent Extraction Process where a solvent is mixed with the material to separate the oil.
  • What are oilseed presses used for?
  • Oilseed presses are used to separate oilseeds such as sunflowers, canola, and soybeans into oil and oilseed meal. Pumpkin or grape seeds and brazil nuts are examples of less common materials that can also be pressed for their oil in these machines. The oil extracted from the press is raw oil and can be used either as a food product or as an industrial product.
  • Why do we need improved cultivars for vegetable oil extraction?
  • Limited land availability and growing demands for vegetable oils call for the development of improved cultivars for harnessing higher yields as well as more efficient oil extraction technologies to augment oil recovery from different oilseed crops without compromising with the oil quality.
  • How do oil extraction machines work?
  • Those products ¡ª including seeds, nuts, vegetables, fruits and leafy plants ¡ª release their oils through this mechanical process, which is often done without adding any chemicals. Oil extraction machines typically use a screw press. Some products, like groundnuts, need to be shelled or peeled before moving through the screw press.
  • Why do oilseeds need to be separated before oil extraction?
  • Most oilseeds need to be separated from their outer husk or shell prior to oil extraction. Dehulling also is referred to as shelling or decorticating. Dehulling increases oil production efficiency, capacity of the extraction equipment and reduces wear in the expeller as the husks are abrasive.
  • What is the difference between a solvent extraction plant and an expeller?
  • While the smallest solvent extraction plant would have a processing capacity of 100-200 tons per day, expellers are available for much smaller capacities, from a few tons per day and up.There are no solvent (chemical) residues in oil that has been expeller pressed resulting in a cleaner more pure oil, higher in natural colors and flavors.