“…They are dangerous; however, when present in excess, they can attack biological molecules such as lipids, proteins, enzymes, DNA and RNA, leading to cell or tissue injury (Amarowicz et al, 2004). The cells experience an oxidative stress which contributes in various clinical disorders such as cancer, heart diseases, neurogenerative diseases like multiple sclerosis, Parkinson`s disease, autoimmune disease, stroke, arthritis, ischemia, reperfusion injury, acute hypertension, haemorrhagic shock, emphysema, cirrhosis, diabetes mellitus, hepatitis, cancer, atherosclerosis as well as other ailments (Roome et al, 2008;Ajith et al, 2002;Gomes et al, 2001;Kang et al, 2003).…”