• What is an expeller press?
  • An expeller press is a screw-type machine that mainly presses oil seeds through a caged barrel-like cavity. Some other materials used with an expeller press include meat by-products, synthetic rubber and animal feeds. Raw materials enter one side of the press and waste products exit the other side.
  • What is the difference between expeller pressed and cold pressed oil extraction?
  • The difference between expeller pressed vs cold pressed oil extraction is that during the latter process, the fruit/nuts/seeds are pressed using either a bladder press (used with softer fruits), hydraulic press, or low resistance expeller pressing so as not to exceed the 122¡ãF temperature requirement.
  • How does expeller pressing work?
  • The oil seeps through small openings that do not allow seed fiber solids to pass. Afterward, the seeds are formed into a hardened press cake, which is removed from the machine. Pressure involved in expeller pressing creates heat in the range of 140¨C210 ¡ãF (60¨C99 ¡ãC).
  • How hot does an expeller press get?
  • As the raw material is pressed, friction causes it to heat. In the case of harder nuts (which require higher pressures) the material can exceed temperatures of 120 ¡ãF (49 ¡ãC). An expeller press is a screw-type machine that mainly presses oil seeds through a caged barrel-like cavity.
  • What is the difference between expeller pressed oil and solvent-extracted oil?
  • Expeller-pressed oils can also be RBD and/or winterized the same as solvent-extracted oils (physical or chemical). Expeller pressing removes about 87-95% of the oils from the nuts/seeds, making it the second most efficient. Cold-processed oils cannot exceed 122¡ãF during the extraction process.
  • What is the difference between an expeller press and a cold press?
  • Typically, when these ingredients are pressed, they are at a much lower temperature (122? F) compared to an expeller press. Note: Unlike oilseed presses, absolutely no heat is used when making cold-pressed oils with one of Goodnature¡¯s cold-press machines.