Origin
E 422 is mostly produced in a chemical process also yielding propylene for industrial use. Glycerin is often obtained from plant fats through saponification. In this case, coconut oil is frequently chosen as the base material. The end product is a colorless, viscous liquid that mixes well with water. Chemically speaking, glycerin belongs to the alcohols and has a slightly sweet taste.
Usage
E 422, as a food additive, is generally permitted for all foods and there are no maximum usage restrictions for glycerin. E 422 is used, among other things, in meat products, coatings, cocoa products, chocolate goods, dates, and chewing gum.
Risks
The fat substance glycerin is a natural substance that occurs in all cells of living organisms. E 422 is considered completely safe because no health-threatening side effects are known to date.