Table 3.
Retention times obtained with reference compounds.
| Authentic standards | Retention time (min) | Authentic standards | Retention time (min) |
|---|---|---|---|
| Gallic acid* | 11.95 | Esculetin** | 30.11 |
| Catechin* | 27.17 | Hesperedin** | 53.49 |
| Chlorogenic acid* | 31.17 | Rutin** | 55.45 |
| Cafeic acid* | 31.87 | Quercetin** | 59.44 |
| Vanillic acid* | 32.6 | Naringenin** | 64.27 |
| Epicatechin gallate* | 34.41 | Quercitrin** | 66.11 |
| Epicatechin* | 36.08 | Kaempferol** | 71.95 |
| Cinnamic acid* | 43.12 | Apigenin** | 72.99 |
| Benzoic acid* | 46.12 | Rhamnetin** | 76 |
| Coumaric acid | 76.61 | / | / |
*: detected at 280 nm; **: detected at 325 nm.