Calculated Mean Content Values
| Units |
Average |
Min |
Max |
Standard Deviation |
| mg/100 ml |
1.40 |
0.01 |
2.50 |
0.81 |
| mol/100 ml |
4.64e-06 |
3.31e-08 |
8.27e-06 |
2.67e-06 |
Values calculated by aggregating data from 11
different samples
from
3 unique
publications.
Aglycone Mean Content Values
| Aglycone |
Units |
Average |
Min |
Max |
Standard Deviation |
| Quercetin |
mg/100 ml |
1.40 |
0.01 |
2.50 |
0.81 |
| mol/100 ml |
4.64e-06 |
3.31e-08 |
8.27e-06 |
2.67e-06 |
Original Content Values Used to Produce Means
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 |
|
0.01 mg/100 ml
|
Black tea infusion - Supermarkets |
yes |
1 |
Hertog M.G.L., Hollman P.C.H., van de Putte B. (1993) Content of potentially anticarcenogenic flavonoids of tea infusions, wines, and fruit juices. Journal of Agricultural and Food Chemistry 41:1242-1246
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
1.90 mg/100 ml
|
Black tea infusion Pickwick |
no |
1 |
|
1.70 mg/100 ml
|
Black tea infusion Van Nelle |
no |
1 |
|
1.70 mg/100 ml
|
Black tea infusion Albert Heijn |
no |
1 |
|
2.10 mg/100 ml
|
Black tea infusion St Michael |
no |
1 |
|
2.50 mg/100 ml
|
Black tea infusion Lipton |
no |
1 |
|
2.10 mg/100 ml
|
Black tea infusion Pickwick Earl Grey |
no |
1 |
|
1.20 mg/100 ml
|
Black tea infusion Jacksons |
no |
1 |
|
1.00 mg/100 ml
|
Black tea infusion Lay's after dinner |
no |
1 |
|
1.10 mg/100 ml
|
Black tea infusion Lay's english breakfast |
no |
1 |
Luximon-Ramma A., Bahorun T., Crozier A., Zbarsky V., Datla K.P., Dexter D.T., Aruoma O.I. (2005) Characterization of the antioxidant functions of flavonoids and proanthocyanidins in Mauritian black teas. Food Research International 38:357-367
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
0.10 mg/100 ml
|
Black tea - Fresh tea leaves infusion |
no |
1 |