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

mean RF value min max SD n # of references
 
Flavonoids - Anthocyanins - Cyanidin 3-O-(6''-malonyl-glucoside)
Vegetables
Onion-family vegetables Onion [Red], raw 0.85 0.85 0.85 0 1 1