Yield factor value: 0.85 (Onion, raw, mature, peeled, chopped, cooked by baking, boiling, or steaming, PECOT 1956_USDA-AH-102)

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

Calculated Mean Retention Factor Value

mean RF value Min Max SD n
0.80 0.80 0.80 0.00 1

Original Retention Factor Values used to Produce Mean

Lombard K., Peffley E., Geoffriau E., Thompson L., Herring A. (2005) Quercetin in onion (Allium cepa L.) after heat-treatment simulating home preparation. Journal of Food Composition and Analysis 18:571-581

Retention Factor Food Before Processing Food After Processing Content Before Processing Content After Processing Units
0.80 Onions - raw - average 4 cultivars Onions - baked at 176°C - average 4 cultivars 15.74 14.88 mg/100 g fresh weight