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

mean RF value min max SD n # of references
 
Vegetables - Onion-family vegetables - Onion [Yellow], raw / Onion [Yellow], raw, stored at room temperature
Flavonoids
Flavonols Quercetin 4'-O-glucoside 0.48 0.44 0.55 0.037 7 1
Quercetin 0.087 0.03 0.17 0.06 3 1
Quercetin 3,4'-O-diglucoside 1.14 0.99 1.29 0.096 7 1