Determination of Some Flavonoid Derivatives Inhibitory Effect on Bovine Milk Lactoperoxidase Enzyme

Authors : Aykut ÖZTEKİN

Pages : 15-21

View : 14 | Download : 9

Publication Date : 2019-05-16

Article Type : Research Paper

Abstract :Peroxidases insert ignore into journalissuearticles values(PODs); are a group of enzymes that are commonly found in bacteria, fungi, plants and animals and have important uses in the food, pharmaceutical industry and clinical diagnostics. Lactoperoxidase insert ignore into journalissuearticles values(LPO); enzyme, which is included in peroxidase enzyme class, is found milk, saliva and tears in mammals. With thiocyanate and hydrogen peroxide, it forms one of the body`s defense systems against infections. Flavonoid derivatives are abundant in plants and constitute an important part of the diet. These derivatives, which are produced synthetically or naturally, have many pharmacological activities. In this study, the effect of some flavonoid derivatives insert ignore into journalissuearticles values(5,7-Dihydroxy-2-insert ignore into journalissuearticles values(3-hydroxy-4-methoxyphenyl);-4H-chromen-4-one insert ignore into journalissuearticles values(a); , 3,5,7-Trihydroxy-2-insert ignore into journalissuearticles values(3,4,5-trihydroxyphenyl);-4H-chromen-4-one insert ignore into journalissuearticles values(b); , 7-Hydroxy-4`-nitroisoflavone insert ignore into journalissuearticles values(c); , 6-Fluoroflavone insert ignore into journalissuearticles values(d); , 7-Hydroxy-3-insert ignore into journalissuearticles values(4-methoxyphenyl);-4H-chromen-4-one insert ignore into journalissuearticles values(e); , 7-Methoxy-2-phenyl-4H-chromen-4-one insert ignore into journalissuearticles values(f); ); on the lactoperoxidase enzyme was investigated. Firstly, by using Sepharose-4B-L-tyrosine-sulfanilamide affinity chromatography, the LPO enzyme was purified 65 fold insert ignore into journalissuearticles values(with a yield of 23%); from bovine milk and kinetic studies were carried out with flavonoid derivatives using this enzyme . The K i values of six molecules were found in ranging from 7.85 µM to 0.023 μM. 6-Fluoroflavone was the most effective inhibitor with K i value of 0.023 μM.
Keywords : Lactoperoxidase, flavonoid derivatives, inhibition