ACE and coronary artery disorder: Quercetin has several health properties such as blood pressure-lowering effects, antioxidant activity, inhibitory activity on angiotensin-converting enzyme (ACE), enhancing the endothelium function, decreasing the coronary heart disease incidence by attenuating the expression of metalloproteinase 1 and by interfering with the accumulation of atheromatous plaques (Shahidi and Yeo, 2018).