1. 1) Khayyal, M. T.; el-Ghazaly, M. A.; Abdallah, D. M.; Nassar, N. N.; Okpanyi, S. N.; Kreuter, M. H. Blood pressure lowering effect of an olive leaf extract (Olea europaea) in L-NAME induced hypertension in rats. Arzneimittelforschung 52, 797-802 (2002).
2. 2) Valavanidis, A.; Nisiotou, C.; Papageorgiou, Y.; Kremli, I.; Satravelas, N.; Zinieris, N.; Zygalaki, H. Comparison of the radical scavenging potential of polar and lipidic fractions of olive oil and other vegetable oils under normal conditions and after thermal treatment. J. Agric. Food. Chem. 52, 2358-2365 (2004).
3. 3) Rietjens, S. J.; Bast, A.; Haenen, G. R. New insights into controversies on the antioxidant potential of the olive oil antioxidant hydroxytyrosol. J. Agric. Food. Chem. 55, 7609-7614 (2007).
4. 4) Incani, A.; Deiana, M.; Corona, G.; Vafeiadou, K.; Vauzour, D.; Dessì, M. A.; Spencer, J. P. Involvement of ERK, Akt and JNK signalling in H2O2-induced cell injury and protection by hydroxytyrosol and its metabolite homovanillic alcohol. Mol. Nutr. Food. Res. 54, 788-796 (2010).
5. 5) Deiana, M.; Corona, G.; Incani, A.; Loru, D.; Rosa, A.; Atzeri, A.; Paola Melis, M.; Assunta Dessì, M. Protective effect of simple phenols from extravirgin olive oil against lipid peroxidation in intestinal Caco-2 cells. Food Chem. Toxicol. 48, 3008-3016 (2010).