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

mean RF value min max SD n # of references
 
Flavonoids - Flavonols - Quercetin 4'-O-glucoside
Vegetables
Onion-family vegetables Onion [Yellow], raw 0.48 0.44 0.55 0.037 7 1
Onion [Red], raw 0.53 0.41 0.62 0.073 7 1