Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 g FW 2.36 0.96 4.80 1.20
mol/100 g 5.08e-06 2.07e-06 1.03e-05 2.58e-06

Values calculated by aggregating data from 18 different samples from 3 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Quercetin mg/100 g FW 1.53 0.62 3.12 0.78
mol/100 g 3.30e-06 1.35e-06 6.73e-06 1.68e-06

Original Content Values Used to Produce Means

van Der Sluis, A. A.;Dekker, M.;de Jager, A.;Jongen, W. M. (2001) Activity and concentration of polyphenolic antioxidants in apple: effect of cultivar, harvest year, and storage conditions. Journal of Agricultural and Food Chemistry 49:3606-13. PubMed (11513636)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
2.00 mg/100 g FW Apple Jonagold 1 no 1
1.00 mg/100 g FW Apple Jonagold 2 no 1
2.90 mg/100 g FW Apple Jonagold 3 no 1
2.20 mg/100 g FW Apple Jonagold 4 no 1
Lee K.W., Kim Y.J., Kim D.O., Lee H.J., Lee C.Y. (2003) Major phenolics in apple and their contribution to the total antioxidant capacity. Journal of Agricultural and Food Chemistry 51:6516-6520 PubMed (15630226)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
4.20 mg/100 g FW Apple with skin - Golden Delicious no 1
3.36 mg/100 g FW Apple with skin - Cortland no 1
4.80 mg/100 g FW Apple with skin - Monroe no 1
4.32 mg/100 g FW Apple with skin - Rhode Island Greening no 1
4.20 mg/100 g FW Apple with skin - Empire no 1
1.92 mg/100 g FW Apple with skin - NY674 no 1
Vrhovsek U., Rigo A., Tonon D., Mattivi F. (2004) Quantitation of polyphenols in different apple varieties. Journal of Agricultural and Food Chemistry 52:6532-6538 PubMed (15479019)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
2.23 mg/100 g FW Apple - Cored - Red Delicious no 7
1.63 mg/100 g FW Apple - Cored - Granny Smith no 3
1.71 mg/100 g FW Apple - Cored - Morgenduft no 4
2.86 mg/100 g FW Apple - Cored - Golden Delicious no 9
2.39 mg/100 g FW Apple - Cored - Royal Gala no 7
4.11 mg/100 g FW Apple - Cored - Braeburn no 2
1.85 mg/100 g FW Apple - Cored - Fuji no 3
0.96 mg/100 g FW Apple - Cored - Renetta no 6