The journey from field to bottle involves cleaning, crushing, heating, and chemical extraction, followed by refining, bleaching, and deodorizing to create a product with a high smoke point and long shelf life. The remaining oil trapped in the press cake is then extracted using hexane, a petroleum-based solvent that dissolves the residual oil without damaging the protein structure.
How Processing Methods Affect Nutrient Retention in Canola Oil
Cooking denatures enzymes and reduces oil viscosity. This mechanical pressing typically recovers about 60 to 70 percent of the oil.
These seeds contain roughly 40 percent oil, which is extracted through a multi-stage industrial process that transforms raw material into a neutral cooking oil found in kitchens worldwide. Flaking breaks the seed cell walls to improve oil flow.
How Processing Affects Nutrient Retention in Canola Oil
At the plant, the seeds undergo rigorous cleaning to remove debris, stones, and dockage using sieves and air classifiers. 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.
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