Important Developments in Romanian Propolis Research
Figure 2
Overlapped UV-VIS spectra of different propolis extracts: I—propolis extract having = 320 nm and total flavonoid content < 2%; II—propolis extract having a plateau as UV maxima between 320 and 395 nm and total flavonoid content approximately of 5%; III—propolis extract having = 295 nm and total flavonoid content of 5%–8% [49].
