Table 1.
Changes in gallic acid, neochlorogenic acid, chlorogenic acid, vanillic acid, ferulic acid, benzoic acid, rutin, quercetin, and procyanidin B1 during plum development.
| Developmental Site | Species | Phenolic Acids (mg·100 g−1 FW) | Flavonol Component (mg·100 g−1 FW) | Flavanol Component (mg·100 g−1 FW) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Gallic Acid | Neochlorogenic Acid | Chlorogenic Acid | Vanillic Acid | Ferulic Acid | Benzoic Acid | Rutin | Quercetin | Procyanidin B1 | ||
| QCL-P | S1 | 2.10 ± 0.06 a | 37.4 ± 0.79 a | 51.99 ± 4.59 a | 3.84 ± 0.12 b | 2.19 ± 0.06 a | 5.70 ± 0.18 b | 3.43 ± 0.14 b | ND | 174.68 ± 10.23 a |
| S2 | 1.66 ± 0.02 b | 24.87 ± 0.05 b | 35.10 ± 1.41 b | 35.15 ± 1.83 a | 1.51 ± 0.17 b | 20.22 ± 0.11 a | 17.64 ± 0.55 a | 15.83 ± 0.85 a | 66.55 ± 4.33 d | |
| S3 | 1.07 ± 0.03 c | 18.88 ± 0.55 c | 24.68 ± 0.42 c | 2.74 ± 0.11 bc | 1.25 ± 0.02 c | 4.39 ± 0.35 c | 1.93 ± 0.07 cd | 2.51 ± 0.08 b | 145.67 ± 5.08 b | |
| S4 | 0.98 ± 0.02 c | 14.19 ± 0.50 d | 18.41 ± 1.62 c | 0.90 ± 0.02 c | 1.1 ± 0.07 cd | 5.40 ± 0.19 b | 1.18 ± 0.06 d | 0.55 ± 0.01 c | 151.13 ± 6.92 b | |
| S5 | 0.64 ± 0.03 d | 8.70 ± 0.42 e | 10.60 ± 0.33 d | 1.5 ± 0.02 bc | 0.88 ± 0.01 de | 4.12 ± 0.20 c | 1.61 ± 0.04 cd | 1.31 ± 0.01 c | 97.64 ± 3.48 c | |
| S6 | 0.50 ± 0.00 e | 5.18 ± 0.32 f | 7.82 ± 0.37 d | 0.82 ± 0.03 c | 0.70 ± 0.03 e | 3.28 ± 0.03 d | 2.06 ± 0.20 c | 0.70 ± 0.04 c | 65.30 ± 4.59 d | |
| CHL-P | S1 | 4.44 ± 0.08 a | 3.44 ± 0.20 b | 5.63 ± 0.11 c | ND | 1.05 ± 0.04 c | 11.28 ± 0.21 b | 3.13 ± 0.27 c | ND | 5.63 ± 0.01 c |
| S2 | 4.19 ± 0.11 b | 3.47 ± 0.15 b | 5.29 ± 0.16 c | 0.90 ± 0.02 b | 1.40 ± 0.13 ab | 10.89 ± 0.46 b | 2.55 ± 0.15 c | ND | 5.29 ± 0.01 d | |
| S3 | 2.89 ± 0.10 c | 2.77 ± 0.10 c | 10.60 ± 0.33 a | ND | 1.34 ± 0.04 b | 4.98 ± 0.13 d | 11.33 ± 1.53 b | ND | 10.60 ± 0.02 a | |
| S4 | 2.06 ± 0.02 d | 1.47 ± 0.14 d | 3.16 ± 0.31 d | ND | 0.47 ± 0.01 d | 6.70 ± 0.64 c | 2.05 ± 0.04 c | ND | 3.15 ± 0.02 f | |
| S5 | ND | 3.36 ± 0.19 b | 3.65 ± 0.10 d | ND | 1.57 ± 0.02 a | 16.97 ± 0.85 a | 10.66 ± 0.62 b | 10.05±0.47 a | 3.67 ± 0.05 e | |
| S6 | ND | 7.95 ± 0.05 a | 8.07 ± 0.28 b | 18.67 ± 1.36 a | 1.34 ± 0.04 b | 18.37 ± 0.53 a | 17.07 ± 0.78 a | 4.86 ± 0.29 b | 8.02 ± 0.03 b | |
| QCL-F | S1 | ND | 24.79 ± 2.66 a | 14.96 ± 0.79 a | 5.51 ± 0.31 a | 1.94 ± 0.06 a | 8.68 ± 0.23 c | 3.34 ± 0.07 b | ND | 52.02 ± 7.18 a |
| S2 | ND | 20.76 ± 0.39 b | 5.12 ± 0.29 b | 3.69 ± 0.10 b | 1.46 ± 0.07 b | 19.59 ± 0.57 a | 7.15 ± 0.29 a | ND | 33.02 ± 0.79 b | |
| S3 | ND | 9.89 ± 1.25 c | 4.10 ± 0.15 b | 1.03 ± 0.03 c | 1.15 ± 0.04 c | 12.43 ± 0.41 b | 1.68 ± 0.03 c | ND | 26.33 ± 1.93 bc | |
| S4 | ND | 7.08 ± 0.76 c | 2.92 ± 0.31 c | 0.94 ± 0.01 c | 0.83 ± 0.04 d | 7.46 ± 0.08 d | ND | ND | 20.35 ± 2.70 c | |
| S5 | ND | 2.99 ± 0.55 d | 1.64 ± 0.19 d | ND | ND | 3.71 ± 0.33 e | ND | ND | 10.36 ± 1.56 d | |
| S6 | ND | 2.68 ± 0.13 d | 0.91 ± 0.04 de | ND | ND | ND | ND | ND | 6.70 ± 0.35 de | |
| CHL-F | S1 | ND | 1.74 ± 0.31 a | 1.41 ± 0.06 a | 0.83 ± 0.13 a | 0.73 ± 0.02 b | 5.10 ± 0.17 a | 4.46 ± 0.17 a | ND | 4.40 ± 0.22 d |
| S2 | ND | 1.48 ± 0.13 b | 1.05 ± 0.05 b | 1.16 ± 0.01 b | 0.44 ± 0.01 c | 3.50 ± 0.26 b | 2.02 ± 0.12 b | ND | 4.32 ± 0.04 d | |
| S3 | ND | ND | ND | ND | 1.30 ± 0.03 a | ND | 1.49 ± 0.05 c | ND | 35.38 ± 0.01 a | |
| S4 | ND | ND | ND | ND | ND | ND | ND | ND | 6.70 ± 0.12 c | |
| S5 | ND | ND | ND | ND | ND | ND | ND | ND | 11.64 ± 0.01 b | |
| S6 | ND | 2.10 ± 0.20 b | ND | ND | ND | ND | ND | ND | ND | |
Values of three replicates are expressed as means ± SD. Different lowercase letters (a–f) in columns denote significant differences between sampling dates for each cultivar by Duncan’s multiple range test (p < 0.05) (ND, not detected). QCL-P and CHL-P represent the fruit peel of ‘Qiangcuili’ and ‘Cuihongli’, respectively. QCL-F and CHL-F represent the flesh of ‘Qiangcuili’ and ‘Cuihongli’, respectively.