Does degumming remove phosphorus and free fatty acids from sunflower oil?
Abstract Currently, two major methods of oil refining are widely used: chemical and physical refining. This study compared the effects of these processes, including degumming, bleaching, neutralization, and deodorization, on the removal of phosphorus, free fatty acids, and the loss of tocopherols in sunflower oil.
What is the difference between physical and chemical refining of sunflower oil?
Tocopherol loss during physical refining was higher by 10% than in chemical refining due to the high temperatures used during the deodorization process, which removes free fatty acids in sunflower oil. In chemical refining process, sunflower oil retained more tocopherols compared to the physical refining method.
What is deodorization process in vegetable oil refining?
Deodorization Process is the forth step in vegetable oil refining which commences after finishing the bleaching. Deodorization holds a big impact on the refined oil quality and is often considered as the heart of the entire edible oil refining method.
What are the advantages of Physical refining of sunflower oil?
Physical refining has several advantages compared to the classical chemical one. This process is more economical (improved yield, lower investment cost, less chemicals used) environmental friendly process (no soapstock to be treated, splitted) but more sensitive to the crude oil quality. Physical refining of sunflower oil is discussed in details.