The processes for the refining of edible oils and fats to eliminate free fatty acids (FFA). This includes the physical refining, a process that builds on the lower boiling point of the free fatty acids compared to the boiling point of the triglyceride oil, and also chemical or alkaline refining, where an alkali is used to neutralise the free fatty acids.
Data Source: Unified Global Standards (ISCED, ISCO, O*NET, ESCO)