Table 1: Biologically active ingredients in poplar and Baccharis propolis.

Biological activityPropolis type, active ingredients

Anticancer and antitumourBaccharis: artepillin C, baccharin, drupanin, cinnamic acid derivatives, prenylated p-coumaric acids, clerodane diterpenes, benzofuranes, and caffeoylquinic acid derivatives
Poplar: caffeic acid, caffeic acid phenylethyl ester, apigenin, quercetin, genistein, galangin, luteolin, fisetin, ferulic acid, chrysin, acacetin, p-hydroxy-benzoic acid, p-methoxy-benzoic acid, gallic acid, and vanillic acid