Table 1.
Solubility of catechin, caffeic acid, taxifolin, and ferulic acid at different concentrations of PYC (1, 4 and 50 mg/mL) in PBS (Phosphate Buffered Saline) referred to solubility in methanol (=100%) determined by high-performance liquid chromatography (HPLC).
| % Catechin | % Caf Acid | % Taxifolin | % Fer Acid | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PYC conc (mg/mL) | 1 | 4 | 50 | 1 | 4 | 50 | 1 | 4 | 50 | 1 | 4 | 50 |
| HPLC after solubilisation | 93.3 | 97.6 | 93.6 | 89.7 | 96.3 | 93.3 | 88.8 | 93.9 | 84.3 | 96.6 | 99.5 | 86.2 |
| HPLC after solubilisation and 15 min sonification | 91.6 | 100.0 | 87.9 | 88.1 | 99.4 | 95.1 | 86.7 | 96.4 | 84.0 | 96.6 | 101.5 | 84.0 |
| HPLC after solubilisation and filtration | 96.1 | 98.0 | 88.8 | 91.3 | 96.7 | 92.2 | 92.1 | 95.0 | 80.4 | 102.5 | 99.8 | 82.7 |