Deodorization and Winterization Perhaps the most critical step in refining is deodorization, where the oil is heated under a vacuum to strip volatile compounds that cause strong odors. This mechanical pressing typically recovers about 60 to 70 percent of the oil.
Understanding the Canola Oil Production Process
Mechanical Pressing and Solvent Extraction After flaking, the material is cooked to reduce viscosity and then sent through a series of screw presses or hydraulic presses to extract a portion of the oil. The mixture of oil and solvent is evaporated and recycled.
At the plant, the seeds undergo rigorous cleaning to remove debris, stones, and dockage using sieves and air classifiers. Flaking breaks the seed cell walls to improve oil flow.
Understanding the Canola Oil Production Process
Once cleaned, the seeds are rolled to crack the seed coat and then subjected to high-pressure rolling mills or flaking rolls to break the cells and prepare the material for oil separation. In colder climates, the oil may also undergo winterization, a process where it is chilled to remove waxes that would cause cloudiness at room temperature, ensuring a clear, stable final product.
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