of coffee brew when evaluated using ABTS assays (Delgado-Andrade et al., 2005). Others who have studied the contribution of CGA to the antioxidant activity of coffee brew concluded that the loss of CGA during the roasting process does not yield a decrease of antioxidant activity due to the simultaneous generation of browning products that also exhibit antioxidant activity (Perrone et al., 2012). The present study found similar NO reducing activities between light-roasted and unroasted coffee, but more activity (p < 0.05) compared with medium or dark roasted brews, respectively.