Abstract
Water and ethanol extracts from Rue were prepared, and their growth inhibiting activity against Helicobacter pylori and other biological activities were examined. Total phenolic compounds in the water and ethanol extracts were present at the concentration of 16.39 mg/g, and 17.07 mg/g, respectively. At the concentration of of phenolic compounds concentration, water extract produced 12 mm inhibition zone while ethanol extract produced 13 mm. The ABTS [2,2`-azinobis(3-ethylbenzothiazoline-6-sulfonic acid)] radical decolorization and antioxidant protection factor (PF) were determined for extracts from Rue. Water extracts showed inhibition rate on ABTS, but ethanol extracts showed higher PF (1.2) than water extracts (0.8). Water extracts had higher electron donation ability on DPPH than ethanol extracts. But ethanol extracts had higher ACE (angiotensin converting enzyme) and xanthine oxidase inhibitory activities than water extracts. Rosemarinic acid and quercetin were the most abundant phenolic compounds as analyzed by HPLC.
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