Table 1.
The results of HPLC and spectrophotometry analysis of the dry bearberry leaves extracts
| Substance | Content of the substance | ||
|---|---|---|---|
| PE | PEC | Decrease, % | |
| Arbutin, mg/100 g | 2943.67 ± 52.82 | 2672.89 ± 62.11 | 9.20 |
| Gallic acid, mg/100 g | 149.12 ± 4.64 | 135.87 ± 3.32 | 8.89 |
| Caffeic acid, mg/100 g | 87.09 ± 3.51 | 78.62 ± 2.71 | 9.73 |
| p-Coumaric acid, mg/100 g | 42.14 ± 2.83 | 37.98 ± 2.24 | 9.87 |
| Chlorogenic acid, mg/100 g | 214.38 ± 2.92 | 195.11 ± 3.57 | 8.99 |
| Protocatechuic acid, mg/100 g | 14.13 ± 1.10 | 12.77 ± 1.62 | 9.62 |
| Rutin, mg/100 g | 11.68 ± 0.05 | 10.57 ± 0.04 | 9.50 |
| Hyperoside, mg/100 g | 438.12 ± 11.38 | 409.51 ± 10.54 | 6.5 |
| Quercitrin, mg/100 g | 13.79 ± 0.47 | 13.08 ± 0,42 | 5.15 |
| Quercetin, mg/100 g | 3.49 ± 0.01 | 3.13 ± 0.04 | 10.32 |
| Catechin, mg/100 g | 268.91 ± 5.23 | 249.53 ± 6.13 | 7.21 |
| The sum of hydroquinonederived compounds (in terms of arbutin), % | 6.57 ± 0.08 | 6.35 ± 0.06 | 3.35 |
| Hydroxycinnamic acids (in terms of chlorogenic acid), % | 2.71 ± 0.02 | 2.47 ± 0.04 | 8.86 |
| Flavonoids (in terms of rutin), % | 4.34 ± 0.06 | 3.97 ± 0.047 | 8.53 |
| The sum of phenolic compounds (in terms of gallic acid), % | 17.12 ± 0.07 | 15.61 ± 0.11 | 8.82 |