Study of Antioxidant Activity of Juglans regia leaves

Abstract

Free radicals are linked with the majority of diseases and the partially reduced metabolites of oxygen and nitrogen, are highly toxic and reactive 1-2. Oxidation is one of the most important route for producing free radicals in food, drugs and living systems. Antioxidants are the substances that when present in low concentration significantly delay or reduce the oxidation of the substrate. Antioxidants protect the living systems from damaging oxidation reactions by reacting with free radicals 3. Juglans regia comprises many species and is widely distributed throughout the world. Its skins, seeds, barks, and leaves are widely used in the pharmaceutical and cosmetic industries 4-5. Juglans regia leaves, which are easily available in large quantities can be considered as a source of compounds for health care, and in traditional medicine for the treatment of venous insufficiency,

An Approach to the Chemosystematics of the Genus Cucumis L

“…Despite the fact that careful assignment of the characteristic UV, 1 H-and 13 C-magnetic resonance data can distinguish the two isomers, there are occasions when investigators have concluded wrongly about the structure of their isolates 29 . For instance, 7-O-β-D-glucopyranosyl-6-C-β-D-glucopyranosylapigenin (saponarin) has been reported to occur in mature barley (Hordeum vulgare) leaves, along with lutonarin and its 3'-hydroxylated analogue [29][30][31] . A number of publications have described the structure of this glycoflavone, isolated from young green barley leaves, as 2"-O-β-Dglucopyranosyl-6-C-β-D-glucopyranosylapigenin (5) 32-…”