“…Propolis has a long history of being used in traditional medicine (Gavanji & Larki, 2015). Ghisalberti et al (1978) reported that propolis extracts have a broad spectrum of biological activities, namely antioxidant (Nagai et al, 2003;Zhang et al, 2016), antibacterial (Choi et al, 2006), antiviral (Marcucci, 1995;Yildirim et al, 2016) and anticancer (Kumazawa et al, 2004;El-Naggar et al, 2015) due to its related therapeutic compounds including polyphenols and flavonoids. Various molecules have been identified from propolis collected from different parts of the world, including phenolic acids, flavones, flavonols and flavanones.…”