Table 5 Phenolic acid and flavonoid content in Cyperus species
Compound | Content (mg/g ext) | |||
|---|---|---|---|---|
CD | CM | CS | CC | |
Gallic acid (1) | 0.49 ± 0.01 | 0.04 ± 0.01 | 0.06 ± 0.01 | 0.18 ± 0.01 |
Protocatechuic acid (2) | 0.51 ± 0.02 | 0.12 ± 0.00 | 0.15 ± 0.00 | 0.26 ± 0.0 |
Vanillic acid (3) | 0.93 ± 0.02 | 0.44 ± 0.01 | 0.39 ± 0.00 | 0.63 ± 0.01 |
p-Coumaric acid (4) | 0.11 ± 0.01 | 0.10 ± 0.00 | 0.06 ± 0.01 | trace |
Rutin (5) | – | – | – | – |
Ferulic acid (6) | – | – | – | 0.38 ± 0.02 |
Isoquercitrin (7) | 0.20 ± 0.01 | 0.09 ± 0.01 | 0.67 ± 0.01 | 0.19 ± 0.00 |
Astragalin (8) | – | – | – | – |
Quercetin (9) | 0.31 ± 0.02 | – | – | – |
Luteolin (10) | 0.45 ± 0.03 | 0.27 ± 0.00 | 1.85 ± 0.04 | 0.39 ± 0.01 |
Apigenin (11) | – | – | – | – |
Tricin (12) | Trace | Trace | Trace | Trace |
Kaempferol (13) | – | Trace | Trace | – |