Calculated Mean Content Values

Units Average Min Max Standard Deviation
mg/100 g FW 0.99 0.00 4.50 2.03
mol/100 g 3.46e-06 0.00 1.57e-05 7.11e-06

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

Aglycone Mean Content Values

Aglycone Units Average Min Max Standard Deviation
Kaempferol mg/100 g FW 0.99 0.00 4.50 2.03
mol/100 g 3.46e-06 0.00 1.57e-05 7.11e-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
0.00 mg/100 g FW Onion - Red yes 3
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
0.00 mg/100 g FW Red onion - Supermarkets yes 1
Crozier, A., Lean, M.E.J., McDonald, M.S., Black, C. (1997) Quantitative analysis of the flavonoids content of commercial tomatoes, onions, lettuce and celery. Journal of Agricultural and Food Chemistry 45:590-595
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
0.00 mg/100 g FW Red onion - Commercial - 3 Aug 1994 no 1
Bahorun T., Luximon-Ramma A., Crozier A., Aruoma O.I. (2004) Total phenol, flavonoid, proanthocyanidin and vitamin C levels and antioxidant activities of Mauritian vegetables. Journal of the Science of Food and Agriculture 84:1553-1561
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
4.50 mg/100 g FW Vegetables - Red onion - Allium cepa L. - Local Red - Skinned no 1
Lugasi A., Hovari J. (2000) Flavonoid aglycons in foods of plant origin I. Vegetables. Acta Alimentaria 29:345-352
Original Content Value Original Food Description Commercial Origin # of Samples Analyzed
2.43 mg/100 g FW Red onion - Local market - Edible parts yes 1