Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 g FW 0.17 0.00 3.32 0.83
mol/100 g 3.79e-07 0.00 7.40e-06 1.85e-06

Values calculated by aggregating data from 27 different samples from 5 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Quercetin mg/100 g FW 0.11 0.00 2.24 0.56
mol/100 g 2.56e-07 0.00 4.99e-06 1.25e-06

Original Content Values Used to Produce Means

Burda, S.;Oleszek, W.;Lee, C.Y. (1990) Phenolic compounds and their changes in apples during maturation and cold storage. Journal of Agricultural and Food Chemistry 38:945-948
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.00 mg/100 g FW Apple - Golden Delicious - Flesh no 1
0.00 mg/100 g FW Apple - Empire - Flesh no 1
0.00 mg/100 g FW Apple - Rhode Island Greening - Flesh no 1
PĂ©rez-Ilzarbe, J.;Hernandez, T.;Estrella, I. (1991) Phenolic compounds in apples : varietal differences. Zeitschrift fuer Lebensmittel Untersuchung und Forschung 192:551-554
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
7.00e-03 mg/100 g FW Apple - Reineta - Flesh no 1
9.00e-03 mg/100 g FW Apple - Golden Delicious - Flesh no 1
0.04 mg/100 g FW Apple - Verde Doncella - Flesh no 1
0.08 mg/100 g FW Apple - Granny Smith - Flesh no 1
3.00e-03 mg/100 g FW Apple - Starking Red - Flesh no 1
Price,K. R.; Prosserb, T.; Richetina, A. M. F. (1999) A comparison of the flavonol content and composition in dessert, cooking and cider-making apples; distribution within the fruit and effect of juicing. Food Chemistry 66:489-494
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
1.17 mg/100 g FW Eating apple - Cox's Orange no 1
1.55 mg/100 g FW Eating apple - Granny Smith no 1
3.32 mg/100 g FW Eating apple - Jonagored no 1
1.39 mg/100 g FW Cooking apple - Bramley no 1
2.22 mg/100 g FW Eating apple - Egremont no 1
McRae K.B., Lidster P.D., DeMarco A.C., Dick A.J. (1990) Comparison of the polyphenol profiles of apple fruit cultivars by correspondance analysis. Journal of the Science of Food and Agriculture 50:329-342
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.00 mg/100 g FW Apple cortex - Jerseymac no 4
0.00 mg/100 g FW Apple cortex - Gravenstein no 5
0.00 mg/100 g FW Apple cortex - Northern Spy no 5
0.00 mg/100 g FW Apple cortex - Golden Delicious no 5
0.00 mg/100 g FW Apple cortex - Spartan no 5
0.00 mg/100 g FW Apple cortex - Cortland no 5
0.00 mg/100 g FW Apple cortex - Red Delicious no 5
Tsao R., Yang R., Young J.C., Honghui Z. (2003) Polyphenolic profiles in eight apple cultivars using high-performance liquid chromatography (HPLC). Journal of Agricultural and Food Chemistry 51:6347-6353 PubMed (14518966)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.00 mg/100 g FW Apple flesh - Mutsu no 10
0.37 mg/100 g FW Apple flesh - Red Delicious no 10
0.00 mg/100 g FW Apple flesh - Northern Spy no 10
0.64 mg/100 g FW Apple flesh - Golden Delicious no 10
0.00 mg/100 g FW Apple flesh - Ida Red no 10
0.00 mg/100 g FW Apple flesh - Empire no 10
0.00 mg/100 g FW Apple flesh - Cortland no 10