Which industrial technologies are used for vegetable oils’ refining?
The present review aimed at comparing the two main industrial technologies used for vegetable oils’ refining, namely, chemical refining and physical refining. Chemical refining removes free fatty acids by soda neutralization.
What is refining in edible oil processing?
Refining is the last step in edible oil processing. We are committed to making every drop of oil safe, healthy and nutritious. Value-adding by-products may be produced from processing stages like Degumming, Neutralization, Bleaching, Dewaxing/Winterization and Deodorization.
Why is degumming important in vegetable oil refining?
Degumming is a crucial step in the refining process of vegetable oils [ 9 ]. It allows the elimination of “gums” or “mucilage,” composed mainly of phospholipids from the crude oil as well as compounds such as carbohydrates, proteins, and trace of metals [ 9, 34 ]. Phospholipids or phosphatides are naturally present in oils.
How are vegetable oils obtained?
Vegetable oils are obtained by mechanical expelling or solvent extraction of oleaginous seeds (soybeans, rapeseed, sunflower, etc.) or oleaginous fruit like palm and olive [ 2 ].