Yield factor value: 1.0 (Grape, pure juice, pasteurized, USDA_2010_SR23)

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

Calculated Mean Retention Factor Value

mean RF value Min Max SD n
7.07 1.09 16.00 6.10 4

Original Retention Factor Values used to Produce Mean

Fuleki T., Ricardo-Da-Silva J.M. (2003) Effects of cultivar and processing method on the contents of catechins and procyanidins in grape juice. Journal of Agricultural and Food Chemistry 51:640-646 PubMed (12537435)

Retention Factor Food Before Processing Food After Processing Content Before Processing Content After Processing Units
1.79 Grape Juice Grape Juice - cold press, 18 h, pasteurized 0.01 0.01 mg/100 ml
16.00 Grape Juice Grape Juice - hot press, 30 min, pasteurized 0.02 0.32 mg/100 ml
9.39 Grape Juice Grape Juice - hot press, 60 min, pasteurized 0.03 0.31 mg/100 ml
1.09 Grape Juice Grape Juice - hot press, 90 min, pasteurized 0.26 0.29 mg/100 ml