Crude oil — degumming — deacidify — bleaching — deodorization
1. Crude oil: crude oil is commonly used for processing into edible oil .
2. Degumming:Usded to neutrilizing ,and water washing,to rid off the acid .
3. Deacidify : Acid stripping is removing hair oil contained in the free fatty acid process, acid stripping methods of alkali refining, steam distillation, solvent extraction, etc.
4. Bleaching: Used to rid off the color of the oil
5. Deodorization:Used to rid off the fetid smell/odour of oil by steam understand of high temperature.