کنگره بین المللی زیست فناوری گیاهان دارویی و قارچ های کوهی

صفحه اصلی / چهارمین کنگره بین المللی و پنجمین همایش ملی زیست فناوری گیاهان دارویی و قارچ های کوهی

INVESTIGATING THE ANTICORROSIVE EFFECT OF CATECHIN ON IRON

نویسندگان :

Seyed mohammad Shoaei¹

1- دانشگاه آزاد اسلامی واحد زنجان

کلمات کلیدی :

catechin،corrosion،inhibitor،toefl test،electrochemical

چکیده :

Catechin is present in many dietary products, plants, fruits (such as apples, blueberries, gooseberries, grape seeds, kiwi, strawberries), green tea, cacao liquor, chocolate, cocoa, etc. The antioxidant action of catechin is well-established by various in vitro, in vivo and physical methods. Catechin affects the molecular mechanisms involved in angiogenesis, extracellular matrix degradation, the regulation of cell death, and multidrug resistance in cancers and related disorders. A positive correlation between green tea consumption and cardiovascular health due to several actions such as antioxidative, antihypertensive, anti-inflammatory, antiproliferative, antithrombogenic, and anti-hyperlipidemic etc., is well established based upon epidemiological and experimental studies. Clinical studies have shown the beneficial effects of catechin due its antioxidant action. In this research, the effect of different concentrations of 1 M hydrochloric acid on the electrochemical properties and corrosion of iron was investigated. The experiments showed that catechin can have corrosion inhibition properties. The results obtained from the TOEFL tests of polarization, electrochemical impedance and weight loss showed favorable compliance. The highest inhibition percentage in TOEFL test was 32%, EIS test was 25% and weight loss was 18%. Catechin is a mixed inhibitor. The inhibitory effect of catechin was carried out by the absorption of the inhibitor at the metal-electrolyte interface, and the absorption mechanism follows the Langmuir isotherm. The activation energy of inhibitor adsorption was calculated to be -12.254 kj/mol, which shows that inhibitor adsorption is spontaneous in this system.