“…Here, the most active samples were Fus, Met, Val, Boy, and Ant, belonging to the larger group obtained by PCA, characterized by significant amounts of prenylated benzophenones, which are known to display a good antiradical activity (Trusheva et al, 2006). Propolis from different regions present antioxidant properties despite their different composition (Bankova et al, ; Kocot, Kiełczykowska, Luchowska‐Kocot, Kurzepa, & Musik, ). Cao et al () verified that Chinese propolis induced the expression of antioxidant‐related genes namely HO‐1, GCLM, and GCLC.…”