Calculated Mean Content Values
| Units |
Average |
Min |
Max |
Standard Deviation |
| mg/100 ml |
104.48 |
12.26 |
134.90 |
25.96 |
| mol/100 ml |
0.00 |
0.00 |
0.00 |
0.00 |
Values calculated by aggregating data from 23
different samples
from
4 unique
publications.
Aglycone Mean Content Values
| Aglycone |
Units |
Average |
Min |
Max |
Standard Deviation |
Original Content Values Used to Produce Means
Khokhar, S.; Magnusdottir, S.G.M. (2002) Total phenol, catechin, and caffeine contents of teas commonly consumed in the United Kingdom. Journal of Agricultural and Food Chemistry 50:565-570 PubMed (11804530)
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
80.50 mg/100 ml
|
Black tea PG Tips |
no |
1 |
|
97.40 mg/100 ml
|
Black tea Yorkshire Gold |
no |
1 |
|
134.90 mg/100 ml
|
Black tea Ceylon |
no |
1 |
|
98.80 mg/100 ml
|
Black tea Darjeeling |
no |
1 |
|
106.20 mg/100 ml
|
Indian Green Tea |
no |
1 |
|
87.00 mg/100 ml
|
Green tea Chun mee (China) |
no |
1 |
|
65.80 mg/100 ml
|
Green tea Bandia (Japan) |
no |
1 |
Astill, C.; Birch, M.R.; Dacombe, C.; Humphrey, P.G.; Martin, P.T. (2001) Factors affecting the caffeine and polyphenol contents of black and green tea infusions. Journal of Agricultural and Food Chemistry 49:5340-5347 PubMed (11714326)
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
81.00 mg/100 ml
|
Black tea infusion |
no |
1 |
|
129.90 mg/100 ml
|
Black tea infusion |
no |
1 |
|
112.00 mg/100 ml
|
Black tea infusion |
no |
1 |
|
108.70 mg/100 ml
|
Black tea infusion |
no |
1 |
|
87.20 mg/100 ml
|
Black tea infusion |
no |
1 |
|
106.60 mg/100 ml
|
Black tea infusion |
no |
1 |
|
88.00 mg/100 ml
|
Black tea infusion |
no |
1 |
|
80.10 mg/100 ml
|
Black tea infusion |
no |
1 |
Rechner, A.R.; Wagner, E.; Buren van, L.; Put van de, F.; Wiseman, S.; Rice-Evans, C.A. (2002) Black tea represents a major source of dietary phenolics among regular tea drinkers. Free radical research 36:1127-1135
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
116.30 mg/100 ml
|
Black tea infusion brand 1 |
no |
3 |
|
95.21 mg/100 ml
|
Black tea infusion brand 2 |
no |
3 |
|
117.60 mg/100 ml
|
Black tea infusion brand 3 |
no |
3 |
|
125.21 mg/100 ml
|
Black tea infusion brand 4 |
no |
3 |
|
123.26 mg/100 ml
|
Black tea infusion brand 5 |
no |
3 |
|
107.82 mg/100 ml
|
Black tea infusion brand 6 |
no |
3 |
|
111.08 mg/100 ml
|
Black tea infusion brand 7 |
no |
3 |
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 |
|
12.26 mg/100 ml
|
Black tea - Fresh tea leaves infusion |
no |
1 |