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  2. Expeller pressing - Wikipedia

    en.wikipedia.org/wiki/Expeller_pressing

    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.

  3. Olive oil extraction - Wikipedia

    en.wikipedia.org/wiki/Olive_oil_extraction

    Many oils are marketed as first cold pressed or cold extraction. "Cold" means no heat is added during extraction. "Pressed" means that the olives are crushed in a mill to extract the oil. [19] In the EU, these designations are regulated by Article 5 of Commission Regulation (EC) No 1019/2002 of 13 June 2002 on marketing standards for olive oil.

  4. Template:Smoke point of cooking oils - Wikipedia

    en.wikipedia.org/wiki/Template:Smoke_point_of...

    Unrefined, first cold-pressed, raw: 107 °C [22] 225 °F Sunflower oil, high oleic: Refined: 232 °C: 450 °F [3] Sunflower oil, high oleic: Unrefined: 160 °C: 320 °F [3] Vegetable oil blend: Refined: 220 °C [13] 428 °F

  5. Cooking oil - Wikipedia

    en.wikipedia.org/wiki/Cooking_oil

    Expeller pressing is a chemical-free process that collects oils from a source using a mechanical press with minimal heat. Cold-pressed oils are extracted under a controlled temperature setting usually below 105 °C (221 °F) intended to preserve naturally occurring phytochemicals, such as polyphenols, tocotrienols, plant sterols and vitamin E ...

  6. Oil mill - Wikipedia

    en.wikipedia.org/wiki/Oil_mill

    Modern mechanical oil mills can process up to 4,000 tons per day in hot pressing processes, and up to 25 tons per day cold pressed. Industrial oil pressing methods usually use a screw to crush the raw materials in a continuous process, before extraction of the oil from the press cake using a centrifuge or a solvent such as hexane.

  7. Machine press - Wikipedia

    en.wikipedia.org/wiki/Machine_press

    A forming press, commonly shortened to press, is a machine tool that changes the shape of a work-piece by the application of pressure. [1] The operator of a forming press is known as a press-tool setter, often shortened to tool-setter. Presses can be classified according to their mechanism: hydraulic, mechanical, pneumatic;

  8. Walnut oil - Wikipedia

    en.wikipedia.org/wiki/Walnut_oil

    Walnut oil is preferred in cold dishes such as salad dressings. [5] Cold-pressed walnut oil is typically more expensive due to the loss of a higher percentage of the oil. Refined walnut oil is expeller-pressed and saturated with solvent to extract the highest percentage of oil available in the nut meat. The solvents are subsequently eliminated ...

  9. Corn oil - Wikipedia

    en.wikipedia.org/wiki/Corn_oil

    Almost all corn oil is expeller-pressed, then solvent-extracted using hexane or 2-methylpentane (isohexane). [1] The solvent is evaporated from the corn oil, recovered, and re-used. After extraction, the corn oil is then refined by degumming and/or alkali treatment, both of which remove phosphatides. Alkali treatment also neutralizes free fatty ...

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