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

mean RF value min max SD n # of references
 
Flavonoids - Flavonols - Quercetin 3,4'-O-diglucoside
Vegetables
Onion-family vegetables Onion [Yellow], raw 1.14 0.99 1.29 0.096 7 1
Onion [Red], raw 0.87 0.78 0.99 0.072 7 1