Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 ml 1.95 0.00 6.95 2.26
mol/100 ml 6.72e-06 0.00 2.39e-05 7.79e-06

Values calculated by aggregating data from 11 different samples from 5 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
(+)-Catechin mg/100 ml 1.95 0.00 6.95 2.26
mol/100 ml 6.72e-06 0.00 2.39e-05 7.79e-06

Original Content Values Used to Produce Means

Schieber, A.;Keller, P.;Carle, R. (2001) Determination of phenolic acids and flavonoids of apple and pear by high-performance liquid chromatography. Journal of Chromatography A 910:265-73 PubMed (11999391)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.00 mg/100 ml Apple juice - Jonagold no 1
0.28 mg/100 ml Apple juice - Elstar no 1
Gokmen V., Acar J., Kahraman N. (2003) Influence of conventional clarification and ultrafiltration on the phenolic composition of Golden Delicious apple juice. Journal of Food Quality 26:257-266
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
2.37 mg/100 ml Apple Juice no 1
Gokmen V., Artik N., Acar J., Kahraman N., Poyrazoglu Z. (2001) Effects of various clarification treatments on patulin, phenolic compound and organic acid compositions of apple juice. European Food Research and Technology 213:194-199
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
2.00 mg/100 ml Apple raw juice - Jonagold no 1
Suarez-Valles B., Santamaria-Victorero J., Mangas-Alonso J.J., Blanco-Gomis D. (1994) High performance liquid chromatography of the neutral phenolic compounds of low molecular weight in apple juice. Journal of Agricultural and Food Chemistry 42:2732-2736
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
6.95 mg/100 ml Apple juice - Na Senora no 1
4.61 mg/100 ml Apple juice - San Pedro no 1
3.60 mg/100 ml Apple juice - San Juan no 1
Kahle K., Kraus M., Richling E. (2005) Polyphenol profiles of apple juices. Molecular Nutrition and Food Research 49:797-806 PubMed (23815505)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.25 mg/100 ml Dessert apple - Juice - Granny Smith no 1
0.38 mg/100 ml Dessert apple - Juice - Golden Delicious no 1
0.32 mg/100 ml Dessert apple - Juice - Red Delicious no 1
0.70 mg/100 ml Dessert apple - Juice - Fuji no 1