Degumming is the first stage in edible oil refining. Degumming removes phospholipids, trace metal ions and other mucilaginous materials. Phospholipids are oil-soluble but are rendered insoluble in oils after hydration. Canola oil contains up to 3.5 % phospholipids, primary lecithin (phosphatidylcholine) and cephalin (phosphatidylethanolamine).
What types of canola oil are covered by these trading rules?
The grades of Canola Oil covered by these Trading Rules shall be of the following types: Type III, otherwise known as Crude Canola Oil Other Canola Oils, including refined and specialty oils, may be traded under these Canola Oil Trading Rules with the specifications for these oils being agreed to by the Buyer and the Seller. Indeterminate
Why is crude canola oil refined?
Crude canola oil is refined in order to remove undesirable minor compounds that make this oil unusable in food products. However, refining can also cause the removal of desirable health-promoting minor components from the oil.
How much sterol does canola oil lose after degumming?
Ferrari et al. [ 11] reported that the total sterol content in crude canola oil decreased from 820 to 772 mg/100 g after degumming (6 % reduction).It was also reported that after degumming, about 0.5¨C1.0 % of total tocopherols were lost.
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