Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 g FW 2.47 0.00 7.20 1.77
mol/100 g 8.16e-06 0.00 2.38e-05 5.85e-06

Values calculated by aggregating data from 12 different samples from 4 unique publications.

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Quercetin mg/100 g FW 2.47 0.00 7.20 1.77
mol/100 g 8.16e-06 0.00 2.38e-05 5.85e-06

Original Content Values Used to Produce Means

Justesen, U.;Knuthsen, P.;Leth, T. (1998) Quantitative analysis of flavonols, flavones, and flavanones in fruits, vegetables and beverages by high-performance liquid chromatography with photo-diode array and mass spectrometric detection. Journal of Chromatography A 799:101-10 PubMed (9550103)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
2.00 mg/100 g FW Apple yes 18
Mattila, P.;Astola, J.;Kumpulainen, J. (2000) Determination of flavonoids in plant material by HPLC with diode-array and electro-array detections. Journal of Agricultural and Food Chemistry 48:5834-41. PubMed (11312761)
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
4.80 mg/100 g FW Apple - Supermarkets yes 1
Hertog, M. Hollman, P. Katan, M (1992) Content of potentially anticarcinogenic flavonoids of 28 vegetables and 9 fruits commonly consumed in the Netherland. Journal of Agricultural and Food Chemistry 40:2379-2383
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
2.40 mg/100 g FW Whole Apple - Malus pumila Mill. - Granny Smith - April 1991 yes 1
2.10 mg/100 g FW Whole Apple - Malus pumila Mill. - James Grieve - Aug 1991 yes 1
2.50 mg/100 g FW Whole Apple - Malus pumila Mill. - Golden Delicious - Aug 1991 yes 1
3.20 mg/100 g FW Whole Apple - Malus pumila Mill. - Elstar - Dec 1991 yes 1
7.20 mg/100 g FW Whole Apple - Malus pumila Mill. - Jonagold - Dec 1991 yes 1
4.10 mg/100 g FW Whole Apple - Malus pumila Mill. - Cox's Orange - Dec 1991 yes 1
2.40 mg/100 g FW Whole Apple - Malus pumila Mill. - Granny Smith - April 1992 yes 1
Lugasi A., Hovari J. (2002) Flavonoid aglycons in foods of plant origin. II. Fresh and dried fruits. Acta Alimentaria 31:63-71
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
3.01 mg/100 g FW Apple - Gala no 1
3.83 mg/100 g FW Apple - Golden no 1
0.00 mg/100 g FW Apple - Jonathan no 1