Table 4 Phenolic acid and flavonoid contents in CE by different regions
Compound | Content (mg/g ext) | |
|---|---|---|
Hampyeong | Ganghwa | |
Gallic acid (1) | 1.09 ± 0.00 | 0.65 ± 0.01 |
Protocatechuic acid (2) | 0.92 ± 0.01 | 0.36 ± 0.01 |
Vanillic acid (3) | 0.94 ± 0.01 | 0.98 ± 0.00 |
p-Coumaric acid (4) | 4.30 ± 0.01 | 3.39 ± 0.01 |
Rutin (5) | 1.02 ± 0.01 | 0.49 ± 0.01 |
Ferulic acid (6) | 0.29 ± 0.00 | 0.32 ± 0.01 |
Isoquercitrin (7) | 2.66 ± 0.01 | 1.26 ± 0.02 |
Astragalin (8) | 4.72 ± 0.00 | 2.85 ± 0.01 |
Quercetin (9) | 0.67 ± 0.01 | 0.34 ± 0.00 |
Luteolin (10) | 1.00 ± 0.01 | 0.15 ± 0.00 |
Apigenin (11) | 0.12 ± 0.00 | 0.19 ± 0.00 |
Tricin (12) | 3.00 ± 0.02 | 2.08 ± 0.03 |
Kaempferol (13) | 1.38 ± 0.01 | 0.94 ± 0.00 |