Uric acid metal complexes

Phytic acid and camosine (histidine-containing dipeptide), obtained from cereal and meat by-products, are effective inhibitors of hpid oxidation by several mechanisms, including metal inactivation and free radical quenching. Uric acid obtained from the decomposition of adenosine triphosphate in muscle also inhibits lipid oxidation by the same mechanisms. However, the importance of uric acid as an endogenous antioxidant in muscle foods is not clear. Various protein concentrates from soybeans, cottonseed and peanuts inhibit hpid oxidation in muscle foods. In addition to their iron binding activity, these crade extracts contain complex polyphenolic flavonoids that have potent antioxidant activity. 

Uric acid can be measured by its reduction of a metal complex, such as. cupric phenanthroline, neocuproine or bathocuproine. 

Various mono- and bistriazines have been synthesized by Moral et al. [23] under microwave conditions. The use of a diamine bearing amino groups of different reactivities, selectively gave monotriazines (vii), bistriazines with identical substituents (viii) and differently substituted bistriazines (ix). The newly synthesized bistriazines showed promising applications in supramolecular chemistry based on hydrogen bonds and/or complexation with metals. They are also expected to show interesting fluorescence properties by complexation with cyan-uric and barbituric acid derivatives. 

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