Figure 1From: Alternative preparation of propolis extracts: comparison of their composition and biological activitiesTypical HPLC chromatogram of W1 propolis extract. UV chromatogram of water extract with radical scavenging properties reflected in the mirror chromatogram obtained by means of DPPH reaction detection. Identified compounds: 1- caffeic acid; 2 – trans-p-coumaric acid; 3 – ferulic acidBack to article page