Table 4.
The contents of nine main flavonoids in PCR-C samples after purification.
| Fresh | PCR-C01 | PCR-C03 | PCR-C05 | PCR-C10 | |
|---|---|---|---|---|---|
| Hesperidin | 113.64 ± 0.83 a (59.5) | 77.03 ± 1.00 b (51.1) | 87.13 ± 3.58 c (65.6) | 108.61 ± 0.34 a (67.6) | 99.58 ± 6.26 d (50.2) |
| Isosinensetin | 4.68 ± 0.04 a (2.5) | 3.30 ± 0.06 b (2.2) | 2.09 ± 0.02 c (1.6) | 1.93 ± 0.01 d (1.2) | 4.04 ± 0.02 e (2.0) |
| Sinensetin | 6.16 ± 0.10 a (3.2) | 4.39 ± 0.05 b (2.9) | 3.22 ± 0.03 c (2.4) | 3.24 ± 0.01 c (2.0) | 6.32 ± 0.02 d (3.2) |
| 5,7,8,4′-Tetramethoxyflavone | 3.08 ± 0.01 a (1.6) | 2.46 ± 0.03 b (1.6) | 1.89 ± 0.01 c (1.4) | 1.85 ± 0.01 d (1.2) | 3.04 ± 0.01 a (1.5) |
| Nobiletin | 39.97 ± 0.17 a (20.9) | 32.59 ± 0.33 b (21.6) | 23.76 ± 0.13 c (17.9) | 24.44 ± 0.04 d (15.2) | 48.92 ± 0.32 e (24.7) |
| 5,6,7,4′-Tetramethoxyflavone | 0.83 ± 0.05 a (0.4) | 0.82 ± 0.01 a (0.5) | 0.43 ± 0.02 b (0.3) | 0.60 ± 0.01 c (0.4) | 1.30 ± 0.02 d (0.7) |
| 3,5,6,7,8,3′,4′-Heptamethoxyflavone | 3.49 ± 0.03 a (1.8) | 2.71 ± 0.04 b (1.8) | 1.64 ± 0.02 c (1.2) | 1.97 ± 0.01 d (1.2) | 3.57 ± 0.02 e (1.8) |
| Tangeretin | 18.63 ± 0.09 a (9.8) | 26.80 ± 0.28 b (17.8) | 12.06 ± 0.05 c (9.1) | 17.46 ± 0.06 d (10.9) | 30.68 ± 0.19 e (15.5) |
| 5-Demethylnobiletin | 0.42 ± 0.01 a (0.2) | 0.73 ± 0.01 b (0.5) | 0.60 ± 0.04 c (0.5) | 0.51 ± 0.03 d (0.3) | 0.79 ± 0.00 e (0.4) |
| PMFs | 77.25 ± 0.36 a (40.5) | 73.80 ± 0.79 b (48.9) | 45.70 ± 0.25 c (34.4) | 51.99 ± 0.12 d (32.4) | 98.66 ± 0.56 e (49.8) |
| Total | 190.89 ± 1.10 a | 150.82 ± 1.78 b | 132.83 ± 3.83 c | 160.60 ± 0.44 d | 198.24 ± 6.04 e |
Data were expressed as the mean ± standard deviation (n = 3). Means with different letters in each row indicate significant differences among PCR-C of different storage periods (p < 0.05). Values in parentheses indicate percentage contribution to the total content (%).