| Phenolic Standard | Retention Time (Minutes) | |
| Standard | HSE | |
| Gallic acid | 2.56 | 1.42 |
| Protocatechuic acid | 2.99 | 2.70 |
| Chlorogenic acid | 5.28 | 4.97 |
| Catechin hydrate | 5.60 | 8.38 |
| EGCG | 6.54 | 10.28 |
| Caffeic acid | 7.94 | 11.83 |
| p-Coumaric | 10.51 | 13.81 |
| Salicyclic acid | 11.24 | 16.64 |
| Ferulic acid | 12.20 | 20.93 |
| Naringenin | 17.73 | |
| Rutin | 18.51 | |
| Quercetin | 23.15 | |