Table 3 Phenolic compounds (μg/ml) detected in RO, Rh and L crude extract using HPLC spectral analysis
Authentic samples | Root | Rhizome | Leaves |
|---|---|---|---|
Phenolic acids Hydroxybenzoic acids | |||
Gallic acid | 31.963 | ND | ND |
Protocatechuic acid | 20.533 | 105.815 | 354.789 |
p-hydroxybenzoic acid | 2.809 | 11.372 | 1482.069 |
Vanillic acid | ND | ND | 52.405 |
Hydroxycinnamic acids | |||
Caffeic acid | ND | ND | 47.676 |
Syringic acid | 16.782 | ND | ND |
p-coumaric acid | 6.830 | ND | 300.830 |
Cinnamic acid | 16.983 | 68.241 | 326.846 |
Flavonoids | |||
Rutin | 26.110 | 236.460 | 473.032 |
Catechin | ND | 125.204 | ND |
Total phenolics detected (μg/ml) | 122.01 | 547.092 | 3037.647 |