... Tea polyphenols are attracting increasing attention due to their reputed beneficial effects on human health; some epidemiological and animal studies have shown that tea polyphenols exert protective effects against inflammation (Zar et al., 2014), and have anti-obesity (Huang et al., 2014;Huang, Liu, Dushenkov, Ho, & Huang, 2009), anti-diabetic (Sabu, Smitha, & Kuttan, 2012), and antibacterial activities (Goulas, Exarchou, Kanetis, & Gerothanassis, 2014;Sharma, Gupta, Sarethy, Dang, & Gabrani, 2012). They have also been implicated as chemo-preventers against the development of various forms of tumors (Dai & Mumper, 2010;Sato, 1999;Zhao et al., 2014b), which is attributed to their antioxidative activities of scavenging free radicals, nitric oxide and/or chelating transition metals such as iron and copper (Forester & Lambert, 2011;Mandel, Weinreb, Reznichenko, Kalfon, & Amit, 2006;Sohn et al., 1994), and effect on numerous intracellular signaling pathways (Henning, Wang, & Heber, 2011). There is an increasing interest in the protective effects of GTP on BaP-induced mutagenesis in the lung of rpsL (Muto et al., 1999), Big Blue (Jiang, Glickman, & de Boer, 2001), as well as against carcinogenesis induced by BaP (Luo, Liu, & Wang, 1995). ...