Open Access
Table 2
Concentrations of phenolic compounds in the leaves of D. fruticosa (mg/g of absolutely dry weight).
| Phenolic compounds | Coenotic populations | |||
|---|---|---|---|---|
| Primorsky Krai | Shikotan Island | |||
| Ol’khovaya, CP 1 | Otradnaya, CP 2 | Malokuril’skaya, CP 3 | Gorobetskaya, CP 4 | |
| In aqueous ethanol extracts: | ||||
| Compound 1 | 1.67 | -1 | - | - |
| Compound 2 | 3.69 | 0.40 | 0.91 | 0.14 |
| Compound 3 | 0.42 | - | - | 0.20 |
| Hyperoside | 5.10 | 2.16 | 0.85 | 0.48 |
| Isoquercitrin | 2.19 | 3.84 | 2.83 | 1.20 |
| Ellagic acid | 5.97 | 2.92 | 0.16 | 0.29 |
| Ellagic acid glycoside | 6.63 | 7.78 | 10.14 | 9.91 |
| Avicularin | 0.23 | 4.10 | 3.40 | 3.14 |
| Compound 9 | 0.18 | 4.94 | 5.28 | 2.32 |
| Quercitrin | 0.05 | - | - | - |
| Astragalin | 0.31 | 0.29 | 0.37 | 0.25 |
| Kaempferol-3-O-rutinoside | 0.32 | 0.45 | 0.19 | 0.38 |
| Compound 13 | - | 0.18 | - | - |
| Quercetin | 0.13 | 0.21 | 0.19 | 0.06 |
| Compound 15 | - | - | - | 0.14 |
| Compound 16 | - | 0.12 | - | - |
| Compound 17 | 0.26 | 0.99 | 1.28 | 1.29 |
| Compound 18 | 0.16 | 0.15 | - | - |
| Compound 19 | - | 0.49 | 0.42 | 0.35 |
| Kaempferol | - | - | - | 0.06 |
| Compound 21 | - | 2.19 | 4.94 | 7.70 |
| Total content of phenolic compounds | 27.3 | 31.6 | 31.0 | 27.9 |
| Sum of tannins | 12.6 | 10.70 | 10.30 | 10.20 |
| In hydrolysates: | ||||
| Sum of flavonols2 | 12.1 | 22.44 | 15.16 | 15.25 |
| Including glycosides: | ||||
| quercetin | 11.3 | 18.4 | 10.3 | 9.5 |
| kaempferol | 0.71 | 1.09 | 0.64 | 0.60 |
| rhamnetin | - | 2.69 | 4.04 | 5.02 |
Notes: 1 concentration below the detection limit (0.1 mg/g), 2 total concentration of flavonols is a sum of concentrations of flavonol glycosides and free aglycons after acid hydrolysis.
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