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The concentration of extracts that inhibits the formation of DPPH free radicals by 50% (IC50); P1—propolis from Podlasie, P2—propolis from Masovia, P3—propolis from West Pomerania Province, EEP—ethanol extract of propolis, HEEP—hexane-ethanol extracts of propolis.
| Propolis Extract | IC50 [µg/mL] | ||
|---|---|---|---|
| P1 | P2 | P3 | |
| EEP | 78.02 ± 4.86 | 55.07 ± 7.39 | 33.01 ± 2.73 |
| HEEP | 62.84 ± 14.59 | 60.72 ± 2.89 | 40.92 ± 7.55 |
