Table 2.
Content of gallic acid and catechin compostions in dark tea fermented by B. subtilis.
| Compounds | Contents (mg/100 g) | ||||
|---|---|---|---|---|---|
| BDT0 | BDT2 | BDT4 | BDT6 | BDT8 | |
| GA | 364.11 ± 5.44c | 362.08 ± 1.98c | 376.44 ± 8.21b | 400.76 ± 8.36a | 411.09 ± 1.82a |
| GC | 106.58 ± 1.75c | 182.02 ± 4.59a | 173.12 ± 3.00b | 170.79 ± 6.03b | 177.80 ± 3.46a |
| EGC | 69.55 ± 0.30b | 113.39 ± 3.58a | 103.99 ± 10.14a | 107.72 ± 20.61a | 94.10 ± 4.25a |
| C | 344.06 ± 6.85b | 381.69 ± 23.52a | 377.84 ± 19.40a | 419.54 ± 37.39a | 422.71 ± 27.21a |
| EC | 29.59 ± 0.83b | 35.38 ± 0.24a | 30.55 ± 0.47b | 30.01 ± 0.46b | 28.40 ± 0.25c |
| EGCG | 156.29 ± 1.64a | 151.06 ± 3.57b | 150.00 ± 0.44b | 136.54 ± 2.26c | 136.88 ± 2.53c |
| GCG | 342.00 ± 6.06a | 315.98 ± 5.53b | 302.18 ± 2.81b | 290.83 ± 1.69c | 289.70 ± 5.25c |
| ECG | 124.08 ± 3.36a | 122.62 ± 5.19a | 109.50 ± 4.69b | 104.40 ± 1.67b | 102.58 ± 2.08b |
| CG | 120.70 ± 2.31a | 109.51 ± 7.52b | 97.00 ± 1.14c | 114.27 ± 3.26a | 108.61 ± 4.37b |
| Non-ester catechins | 549.79 ± 8.49b | 712.48 ± 20.14a | 685.51 ± 17.92a | 728.06 ± 53.86a | 723.00 ± 27.87a |
| Ester catechins | 743.07 ± 6.38a | 699.17 ± 15.28b | 658.67 ± 1.36c | 646.04 ± 5.70c | 637.77 ± 4.09d |
GA, gallic acid; GC, gallocatechin; EGC, epigallocatechin; C, catechin; EC, epicatechin; EGCG, epigallocatechin gallate; GCG, gallocatechin gallate; ECG, epicatechin gallate; CG, catechin gallate. Each tea sample was determined with three replications. Letters indicate Duncan’s pairwise differences among different samples (p < 0.05).