Retention factor (RF) = (Content After Processing / Content Before Processing) * Yield factor

mean RF value min max SD n # of references
 
Phenolic acids - Hydroxybenzoic acids - 4-Hydroxybenzoic acid
Non-alcoholic beverages
Fruit juices - Berry juices Strawberry, pure juice 1.08 1.07 1.1 0.015 2 1