Table 2.
Retention time (RT) of polyphenolic compounds recorded in the individual polyphenol injections, in the polyphenol mixture, and in the hydro-ethanolic leaf extracts of A. altissima.
| Sample | Polyphenols as Individual Run | Polyphenols in Mixture Run | Frozen (Summer) |
Frozen (Autumn) |
Dried (Summer) |
Dried (Autumn) |
|
|---|---|---|---|---|---|---|---|
| Polyphenols | RT (min) | ||||||
| Gallic acid | 10.97 | 10.84 | 10.73 | 10.97 | 10.71 | 10.71 | |
| Protocatechuic acid | 13.98 | 13.90 | - | 14.04 | 13.97 | 13.99 | |
| Catechin | 15.63 | 15.91 | - | - | - | 15.79 | |
| Vanillic acid | 16.74 | overlapped with epicatechin | 16.64 | 16.79 | 16.6 | 16.65 | |
| Epicatechin | 17.28 | 17.38 | - | - | 17.34 | - | |
| Caffeic acid | 17.49 | 17.96 | - | - | - | - | |
| Syringic acid | 18.09 | overlapped with caffeic acid | - | - | - | - | |
| Rutin | 20.42 | 20.63 | 20.68 | - | 20.66 | 20.70 | |
| Ferulic acid | 22.38 | 22.35 | 22.12 | 22.32 | - | - | |
| p-Coumaric acid | 23.10 | 23.46 | 23.42 | 23.61 | 23.49 | 23.48 | |
| Hesperidin | 24.01 | 24.03 | 24.32 | - | 24.36 | 24.38 | |
| Rosmarinic acid | 26.33 | 26.69 | 26.46 | - | 26.57 | 26.53 | |
| Salicylic acid | 29.31 | 29.61 | - | - | - | - | |
| Quercetin | 34.72 | 34.65 | - | - | 35.07 | 35.22 | |
| Kaempferol | 39.71 | 41.00 | - | - | - | - | |
“-” = not detected.