Calculated Mean Content Values
| Units |
Average |
Min |
Max |
Standard Deviation |
| mg/100 ml |
17.89 |
0.36 |
85.70 |
27.41 |
| mol/100 ml |
3.90e-05 |
7.85e-07 |
1.87e-04 |
5.98e-05 |
Values calculated by aggregating data from 16
different samples
from
5 unique
publications.
Aglycone Mean Content Values
| Aglycone |
Units |
Average |
Min |
Max |
Standard Deviation |
| (-)-Epigallocatechin |
mg/100 ml |
11.96 |
0.24 |
57.26 |
18.32 |
| mol/100 ml |
2.61e-05 |
5.25e-07 |
1.25e-04 |
4.00e-05 |
| Gallic acid |
mg/100 ml |
6.64 |
0.13 |
31.81 |
10.17 |
| mol/100 ml |
1.45e-05 |
2.91e-07 |
6.94e-05 |
2.22e-05 |
Original Content Values Used to Produce Means
Lin, J.K.;Lin, C.L.;Liang, Y.C.;Lin-Shiau, S.Y.;Juan, I.M. (1998) Survey of catechins, gallic acid, and methylxanthines in green, oolong, pu-erh and black teas. Journal of Agricultural and Food Chemistry 46:3635-3642
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
0.54 mg/100 ml
|
Chinese oolong and paochong commercial tea - Fu-Chien An-Hsi Tieh-Kuan-Yin |
no |
1 |
|
0.63 mg/100 ml
|
Chinese oolong and paochong commercial tea - Fu-Chien (Shen-Chun) An-Hsi Tieh-Kuan-Yin |
no |
1 |
|
0.46 mg/100 ml
|
Chinese oolong and paochong commercial tea - Fu-Chien Yu-San Tieh-Kuan-Yin |
no |
1 |
|
0.71 mg/100 ml
|
Chinese oolong and paochong commercial tea - Fu-Chien Oolong |
no |
1 |
|
0.43 mg/100 ml
|
Chinese oolong and paochong commercial tea - Fu-Chien Wun-Yi Oolong |
no |
1 |
|
0.41 mg/100 ml
|
Chinese oolong and paochong commercial tea - Fu-Chien An-Chi Tieh Kuan-Yin |
no |
1 |
|
0.38 mg/100 ml
|
Chinese oolong and paochong commercial tea - An-Hui Huang-Shan Mao-Feng |
no |
1 |
|
0.50 mg/100 ml
|
Chinese oolong and paochong commercial tea - Ping-Lin, Taipei, Paochong |
no |
1 |
|
0.36 mg/100 ml
|
Chinese oolong and paochong commercial tea - Ping-Lin, Taipei, Oolong |
no |
1 |
Lee, B.-L.; Ong, C.-N. (2000) Comparative analysis of tea catechins ans theaflavins by high-performance liquid chromatography and capillary electrophoresis. Journal of Chromatography A 881:439-447
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
11.82 mg/100 ml
|
Iron Buddha |
no |
1 |
|
8.99 mg/100 ml
|
Oolong tea |
no |
1 |
Kuhr, S.; Engelhardt, U.H. (1991) Determination of flavanols, theogallin. Zeitschrift fuer Lebensmittel Untersuchung und Forschung 192:526-529 PubMed (8717094)
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
17.03 mg/100 ml
|
Oolong tea infusion, Taiwan, Leaf |
no |
1 |
|
47.09 mg/100 ml
|
Oolong tea infusion, China, Leaf |
no |
1 |
Lin Y., Juan I., Chen Y., Liang Y., Lin J. (1996) Composition of polyphenols in fresh tea leaves and associations of their oxygen-radical-absorbing capacity with antiproliferative actions in fibroblast cells. Journal of Agricultural and Food Chemistry 44:1387-1394
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
63.75 mg/100 ml
|
Paochung tea infusion, TTE 12 |
no |
1 |
|
47.50 mg/100 ml
|
Paochung tea infusion, Wun-Yi |
no |
1 |
Kilmartin P.A., Chyong F.H. (2003) Characterisation of polyphenols in green, oolong, and black teas, and in coffee, using cyclic voltammetry. Food Chemistry 82:501-512
| Original Content Value |
Original Food Description |
Commercial Origin |
# of Samples Analyzed |
|
85.70 mg/100 ml
|
Oolong tea - Infusion - 100°C |
no |
1 |