Table 2.
The compositions and contents of catechins in green tea powders with different particle sizes after in vitro digestion (mg/g)
| Catechin | GTP1 | GTP2 | GTP3 | GTP4 | |
|---|---|---|---|---|---|
| Stomach | GC | 3.40 ± 0.07 | 3.35 ± 0.14 | 3.56 ± 0.05 | 3.39 ± 0.06 |
| EGC | 32.89 ± 0.72b | 32.98 ± 0.09b | 34.52 ± 0.83a | 32.96 ± 0.73b | |
| C | 9.45 ± 0.19 | 9.48 ± 0.20 | 9.90 ± 0.24 | 9.72 ± 0.12 | |
| EGCG | 29.29 ± 1.45c | 36.15 ± 1.47b | 40.89 ± 0.80a | 40.43 ± 0.68a | |
| GCG | ND | ND | ND | ND | |
| EC | 10.38 ± 0.24 | 10.20 ± 0.04 | 10.68 ± 0.23 | 10.43 ± 0.18 | |
| ECG | 6.24 ± 0.19c | 7.92 ± 0.33b | 8.93 ± 0.17a | 8.69 ± 0.35a | |
| Total | 91.65 ± 3.02c | 100.08 ± 2.98b | 108.48 ± 2.27a | 105.62 ± 1.96a | |
| Intestine | GC | 1.32 ± 0.11c | 1.24 ± 0.03c | 2.24 ± 0.11b | 3.10 ± 0.87a |
| EGC | 0.98 ± 0.26d | 2.15 ± 0.12c | 2.77 ± 0.21b | 3.19 ± 0.22a | |
| C | 1.60 ± 0.06b | 1.94 ± 0.11a | 1.97 ± 0.12a | 1.70 ± 0.10b | |
| EGCG | 1.02 ± 0.08a | 0.54 ± 0.09c | 0.86 ± 0.04b | 0.79 ± 0.11b | |
| GCG | ND | ND | ND | ND | |
| EC | 0.45 ± 0.02b | 1.04 ± 0.05a | 1.04 ± 0.08a | 0.46 ± 0.07b | |
| ECG | 0.16 ± 0.01a | 0.12 ± 0.01b | 0.11 ± 0.01b | 0.14 ± 0.01a | |
| CG | 0.53 ± 0.01 | 0.52 ± 0.01 | 0.55 ± 0.04 | 0.48 ± 0.06 | |
| Total | 6.05 ± 0.42c | 7.54 ± 0.27b | 9.55 ± 0.38a | 9.86 ± 0.98a |
Data are expressed as the mean ± standard deviation of three replications. Different letters in the same row indicate significant difference at P < 0.05 according to LSD test. GTP1, 564.24 µm; GTP2, 74.85 µm; GTP3, 34.62 µm; GTP4, 15.10 µm. ND, not detected