Many human diseases are caused by free radicals. Antioxidants neutralize free radicals and thereby reduce the risk of cardiovascular and cancer [1]. Recently, due to toxicity and carcinogenicity many of industrial antioxidants, attention is focused on the identification of antioxidants derived from natural sources. It has been shown that plants with phenolic compounds, has the potential antioxidant [2]. The aim of this study was to determine free radical scavenging activity of the extract of saffron petals.Saffron petal is a rich source of Polyphenolic substances and antioxidant activity of the petal extract was measured using free radical scavenging (DPPH) [3]. Results showed that total phenolic compounds petal extract 4.99 (mg GAE/g dry wight ectract)this value was higher than amount of phenolic acids (1.38 mg caffeic acid/g dry weight) reported by Termentzi and Kokkalou (2008) [4] for saffron petal harvested in Greece. In this study in DPPH method, extract radical scavenging activity%(0/01g extract /10ml methanol) was 24/93. The result goli et al (2012) [5] % radical scavenging activity of saffron petal extract at 50 ppm concentration was 22.45. The results showed that saffron petal could be considered as a bioresource of phenolic compounds with high antioxidant activity.

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