Abstract: Nasturtium officinale R.Br. is a kind of vegetable of Crucifer rich in isothiocyanates, ITCs which can prevent from cancer. Functions of isothiocyanate like sterilizing, bacteriostatic action and annihilating the digestive tractparasites have been reported. It also can effectively protect DNA from damage and cancer caused by kinds of carcinogen from diet. Isothiocyanate was extracted from fresh Nasturtium officinale R.Br. Then the ability of inhibiting hydroxyl radical action, and scavenging super oxide anions was studied in this article as well as the reducing capacity of isothiocyanate extracts was determined compared with the vitamin C. The effect of treatment temperature and time on antioxidation activity of ITCs extracts and vitamin C solution was also studied. The result indicated that ITCs extracts showed stronger antioxidation ability, and remarkable to the free radical elimination effect. But its stability was easily to be destroyed by the higher treatment temperature and longer storage time.
关键词: 西洋菜(Nasturtium officinale R.Br.);异硫氰酸酯;抗氧化