Table 2.
Chemical composition identified from Psidium guajava extract.
| Peak | Retention Time (Rt) | Concentration (%) | λmax (nm) | Name |
|---|---|---|---|---|
| 1 | 9.711 | 1.079 | 278 | Tannic acid |
| 2 | 15.068 | 3.699 | 270 | Gallic acid |
| 3 | 17.838 | 1.316 | 242, 294 | Protocatechuic acid |
| 4 | 18.865 | 16.549 | 257, 358 | Rutin |
| 5 | 19.579 | 14.131 | 270, 323 | Hesperidin |
| 6 | 23.807 | 19.305 | 258, 378 | Quercetin |
| 7 | 24.243 | 13.965 | 240, 280 | Cinnamic derivative |
| 8 | 24.794 | 0.444 | - | n.i. |
| 9 | 25.785 | 0.836 | 267 | Syringic acid |
| 10 | 27.481 | 10.071 | 235, 322 | Cinnamic derivative |
| 11 | 28.071 | 5.553 | 252, 352, 369 | Ellagic acid |
| 12 | 28.517 | 7.221 | 220, 329 | Rosmarinic acid |
n.i.—not identified.