The corrosion inhibition of mild steel by Catharanthus roseus (Vince rosea) and Turmeric (Curcuma longa) extracts as green inhibitors in 1 M HCl solutions has been investigated by using potentiodynamic polarization, e...The corrosion inhibition of mild steel by Catharanthus roseus (Vince rosea) and Turmeric (Curcuma longa) extracts as green inhibitors in 1 M HCl solutions has been investigated by using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), hydrogen evolution measurements and scanning electron microscope (SEM) techniques. Results obtained show that these investigated compounds are good inhibitors and act as mixed type inhibitors. The inhibition efficiencies increase with increasing inhibitor concentration. The SEM results show the formation of protective film on the mild steel surface in the presence of Catharanthus roseus and Turmeric extracts. The results obtained from different tested techniques are in good agreement.展开更多
To explore the protective effect of extract powder of turmeric on carbon tetrachloride （CCl4）-induced acute hepatic injury, the mice were administrated with extract powder of turmeric with different doses （50, 100,...To explore the protective effect of extract powder of turmeric on carbon tetrachloride （CCl4）-induced acute hepatic injury, the mice were administrated with extract powder of turmeric with different doses （50, 100, 200 mg/kg） for 7 d. Then the mice were treated with 0.12% CCl4 by intraperitoneal injection. The levels of ALT, AST in serum and activities of SOD, CAT, MDA, GSH-Px in liver tissue were detected and the liver lesions were examined. The results showed that the activities of ALT, AST and the level of MDA in extract powder of turmeric group were signif- icantly decreased, and the activities of SOD, CAT, GSH-Px were significantly increased, and liver pathology were improved compared with the injured group （P〈 0.05 or P〈0.01）. It indicated that the extract powder of turmeric had significant protective effect against CCl4 induced acute hepatic injury in mice.展开更多
文摘The corrosion inhibition of mild steel by Catharanthus roseus (Vince rosea) and Turmeric (Curcuma longa) extracts as green inhibitors in 1 M HCl solutions has been investigated by using potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), hydrogen evolution measurements and scanning electron microscope (SEM) techniques. Results obtained show that these investigated compounds are good inhibitors and act as mixed type inhibitors. The inhibition efficiencies increase with increasing inhibitor concentration. The SEM results show the formation of protective film on the mild steel surface in the presence of Catharanthus roseus and Turmeric extracts. The results obtained from different tested techniques are in good agreement.
基金Supported by the Scientific and Technological Innovation Project of Wuhan Academy of Agricultural Science&Technology(CX201417)~~
文摘To explore the protective effect of extract powder of turmeric on carbon tetrachloride （CCl4）-induced acute hepatic injury, the mice were administrated with extract powder of turmeric with different doses （50, 100, 200 mg/kg） for 7 d. Then the mice were treated with 0.12% CCl4 by intraperitoneal injection. The levels of ALT, AST in serum and activities of SOD, CAT, MDA, GSH-Px in liver tissue were detected and the liver lesions were examined. The results showed that the activities of ALT, AST and the level of MDA in extract powder of turmeric group were signif- icantly decreased, and the activities of SOD, CAT, GSH-Px were significantly increased, and liver pathology were improved compared with the injured group （P〈 0.05 or P〈0.01）. It indicated that the extract powder of turmeric had significant protective effect against CCl4 induced acute hepatic injury in mice.
