“…The antioxidant capacity of Mentha piperita L. extracts during the oxidation of sunflower oil at 100ºC has been observed by comparing peroxide accumulation in the absence and presence of extracts (Marinova & Yanishlieva, 1997). The radical scavenging capacity (RSC) of Menha essential oils has been evaluated by measuring the scavenging activity based on 2,2-diphenyl-1-picrylhydrazyl (DPPH) and -carotene/linoleic methods and it was reported that Mentha longifolia L. (Dukic et al, 2003;Gulluce et al, 2007), M. piperita L. (Dukic et al, 2003;Yadegarinia, et al, 2006;Dorman et al, 2003;Capecka et al, 2005;Politeo et al, 2006), Mentha aquatica L. ( Dorman et al, 2003), Mentha spicata L. (Dorman et al, 2003;Choudhury et al, 2006;Arabshahi et al, 2007;Kanatt et al, 2007), Mentha arvensis (Chanwitheesuk et al, 2005), Mentha suaveolens (Ferreira et al, 2006) and Mentha pulegium (Mata et al, 2007) present antioxidant capacity. The antioxidant capacity could be determined by using pulse differential voltammetry, recording the current of the electrochemical oxygen reduction at the electrode surface.…”