Chemical Analysis and Antioxidant Activity of Four Propolis Samples Collected from Different Regions of Lebanon

Propolis samples were collected from four different regions of Lebanon characterized by high biodiversity and honey production. The analyzed for their total phenolic contents (TPC), flavonoid (TFC), chemical profiles, antioxidant activity. TPC was determined using Folin-Ciocalteu method while the TFC AlCl3 method. activity propolis examined two methods, namely free radical scavenging assay reducing ability. profiles assessed thin-layer chromatography (TLC), UV-Vis, gas chromatography/mass spectrometry GC-MS analysis. Total content ranged 53.35 ± 7.09 to 148.27 15.08 mg GAE/g, 45.73 2.8 134.5 8.46 RUE/g. GC/MS analysis revealed presence 9-octadecene tetradecene as major compounds that have been previously reported demonstrate In addition, Berqayel sample showed contained mainly hydrocarbons, Wadi Faara recorded poor chromatograms with absence most present in samples. majority relatively interesting activity, which also correlated TFC. Our results provide additional evidence on importance composition its usefulness pharmaceutical industry.