Table 4.
Representation of the amounts of phenolic compounds in the different plant parts.
| Phenol standards | Standard retention time |
P. guineense (stem) |
P. guineense (leaves) |
||
|---|---|---|---|---|---|
| Characteristics | T.R. (min) | A (mUA) | Conc (mg/g DW) | A (mUA) | Conc (mg/g DW) |
| 3,4-OH benzoic acid | 19.10 ± 00 | 10.12 ± 00 | 0.40 ± 00 | 48.48 ± 00 | 1.92 ± 00 |
| Apigenin | 33.49 ± 00 | 39.46 ± 00 | 0.01 ± 00 | 125.90 ± 00 | 0.03 ± 00 |
| Caffeic acid | 25.67 ± 00 | 77.25 ± 00 | 1.45 ± 00 | 132.95 ± 00 | 2.49 ± 00 |
| Catechin | 23.48 ± 00 | 62.71 ± 00 | 4.56 ± 00 | 79.81 ± 00 | 5.80 ± 00 |
| Eugenol | 29.43 ± 00 | 110.23 ± 00 | 31.87 ± 00 | 124.61 ± 00 | 36.02 ± 00 |
| Gallic acid | 14.38 ± 00 | 0 | 0 | 26.73 ± 00 | 0.68 ± 00 |
| O-coumaric acid | 25.11 ± 00 | 847.86 ± 00 | 26.17 ± 00 | 133.33 ± 00 | 4.11 ± 00 |
| OH-tyrosol | 21.91 ± 00 | 37.61 ± 00 | 3.47 ± 00 | 50.74 ± 00 | 4.68 ± 00 |
| P-coumaric acid | 30.52 ± 00 | 26.06 ± 00 | 0.51 ± 00 | 113.60 ± 00 | 2.22 ± 00 |
| Quercetin | 42.19 ± 00 | 30.14 ± 00 | 2.83 ± 00 | 90.40 ± 00 | 8.49 ± 00 |
| Rutin | 29.45 ± 00 | 55.2 ± 00 | 4.65 ± 00 | 79.2 ± 00 | 6.66 ± 00 |
| Syringic acid | 25.55 ± 00 | 88.42 ± 00 | 2.19 ± 00 | 75.9 ± 00 | 1.88 ± 00 |
| Theobromine | 17.35 ± 00 | 30.62 ± 00 | 1.03 ± 00 | 64.84 ± 00 | 2.17 ± 00 |
| Tyrosol | 21.77 ± 00 | 37.31 ± 00 | 2.17 ± 00 | 25.55 ± 00 | 1.49 ± 00 |
| Vanillic acid | 25.27 ± 00 | 48.6 ± 00 | 1.55 ± 00 | 88.34 ± 00 | 2.82 ± 00 |
Conc: concentration; DW: dried weight; T.R.: retention time; A: area.