Table 5 Representation of the amounts of phenolic compounds in different bark extracts
Phenol standard | SGFH2O | SGFEtOH | SGFH2O/EtOH | ||||
|---|---|---|---|---|---|---|---|
characteristics | Standard retention time (min) | A (mUA) | Conc (mg/g DW) | A (mUA) | Conc (mg/g DW) | A (mUA) | Conc (mg/g DW) |
3.4-OH benzoic acid | 19.10 ± 00 | ||||||
Apigenin | 33.49 ± 00 | 822207.6 | 186.91 | 26395.9 | 6.00 | 11129.0 | 2.53 |
Caffeic acid | 25.67 ± 00 | ||||||
Catechin | 23.48 ± 00 | 26496.4 | 1925.87 | ||||
Eugenol | 29.43 ± 00 | ||||||
Gallic acid | 14.38 ± 00 | ||||||
O-coumaric acid | 25.11 ± 00 | ||||||
OH-tyrosol | 21.91 ± 00 | 12969.4 | 1198.09 | ||||
P-coumaric acid | 30.52 ± 00 | 21333.2 | 417.71 | ||||
Quercetin | 42.19 ± 00 | ||||||
Rutin | 29.45 ± 00 | 12728.4 | 1071.65 | ||||
Syringic acid | 25.55 ± 00 | 53931.2 | 1337.02 | 16325.6 | 404.73 | 16427.9 | 407.26 |
Tyrosol | 21.77 ± 00 | ||||||
Vanillic acid | 25.27 ± 00 |