Antibacterial Activity and Anticorrosive Efficiency of Aqueous Methanolic Extract of Artemisia pallens (Asteraceae) and its major Constituent

Abstract

An aqueous-methanolic [methanol:water (1:1)1 extract of the whole plant of Artemisia pallens (Family: Asteraceae) has shown good antibacterial activity against Pseudomonas aeruginosa and Shigella flexneri at the concentration of 100 mg/mL. The activity-guided fractionation has led to isolation of compound 4-hydroxyphenyl-/3-D-glucopyranoside (which is known as arbutin), as a major constituent and exhibited the same antibacterial activity at a concen-tration of 17 mg/mL. Both the crude extract and arbutin also showed 94% anticorrosive efficiency against mild steel in 1M HC1 at concentration of 200 mg/L