Calculated Mean Content Values
| Units |
Average |
Min |
Max |
Standard Deviation |
| mg/100 g FW |
0.03 |
0.00 |
0.30 |
0.06 |
| mol/100 g |
1.02e-07 |
0.00 |
9.93e-07 |
2.11e-07 |
Values calculated by aggregating data from 23
different samples
from
5 unique
publications.
Aglycone Mean Content Values
| Aglycone |
Units |
Average |
Min |
Max |
Standard Deviation |
| Quercetin |
mg/100 g FW |
0.03 |
0.00 |
0.30 |
0.06 |
| mol/100 g |
1.02e-07 |
0.00 |
9.93e-07 |
2.11e-07 |
Original Content Values Used to Produce Means
Price, K.R.;Rhodes, M.J.C. (1997) Analysis of the major flavonol glycosides present in four varieties of Onion (Allium cepa) and changes in composition resulting from autolysis. Journal of the Science of Food and Agriculture 74:331-339
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
0.30 mg/100 g FW
|
White onion - Skinned - Albion |
no |
5 |
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
|
White onion - Commercial - 3 Aug 1994 |
no |
1 |
|
0.00 mg/100 g FW
|
White onion - Commercial - 12 Jan 1995 |
no |
1 |
|
0.00 mg/100 g FW
|
White onion - Commercial - 4 Feb 1995 |
no |
1 |
|
0.00 mg/100 g FW
|
White onion - Commercial - 3 April 1995 |
no |
1 |
|
0.00 mg/100 g FW
|
White onion - Commercial - 6 May 1995 |
no |
1 |
Marotti M., Piccaglia R. (2002) Characterization of flavonoids in different cultivars of onion (Allium cepa L.). Journal of Food Science 67:1229-1232 PubMed (20949919)
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
0.07 mg/100 g FW
|
White onion - Skinned - Gladstone |
no |
1 |
|
0.07 mg/100 g FW
|
White onion - Skinned - Southport |
no |
1 |
|
0.06 mg/100 g FW
|
White onion - Skinned - White Hawk |
no |
1 |
Patil B.S., Pike L.M., Kil Sun Y. (1995) Variation in the quercetin content in different colored onions (Allium cepa L.). Journal of the American Society for Horticultural Science 120:909-913
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
0.05 mg/100 g FW
|
White onion - Skinned - 20223G |
no |
5 |
|
0.02 mg/100 g FW
|
White onion - Skinned - 20319G |
no |
5 |
|
0.01 mg/100 g FW
|
White onion - Skinned - 20240G |
no |
5 |
|
0.00 mg/100 g FW
|
White onion - Skinned - Contessa |
no |
5 |
|
0.00 mg/100 g FW
|
White onion - Skinned - 20234G |
no |
5 |
|
0.00 mg/100 g FW
|
White onion - Skinned - 4168 |
no |
5 |
|
0.00 mg/100 g FW
|
White onion - Skinned - 20216G |
no |
5 |
|
0.01 mg/100 g FW
|
White onion - Skinned - 20304G |
no |
5 |
|
0.00 mg/100 g FW
|
White onion - Skinned - 20215G |
no |
5 |
|
0.00 mg/100 g FW
|
White onion - Skinned - 20221G |
no |
5 |
|
0.00 mg/100 g FW
|
White onion - Skinned - 20221G |
no |
5 |
Patil B.S., Pike L.M. (1995) Distribution of quercetin content in different rings of various coloured onion (Allium cepa L.) cultivars. Journal of Horticultural Science and Biotechnology 70:643-650
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
0.02 mg/100 g FW
|
White onion - Contessa - Outermost rings |
no |
1 |
|
0.01 mg/100 g FW
|
White onion - Contessa - Middle rings |
no |
1 |
|
0.01 mg/100 g FW
|
White onion - Contessa - Remaining rings |
no |
1 |