SAAD T. MUTLK* AND MUSTAFA R. ALSHAHEEN
Department of Biology, College of Science, University of Anbar, Anbar, Iraq
*(e-mail: saad.t.mutalk@uoanbar.edu.iq; Mobile: +964 78216 88893)
(Received: August 5, 2022; Accepted: October 25, 2022)
ABSTRACT
The present work aimed at exploring the antimicrobial activity of aqueous and alcoholic lemongrass
extract alongside three specific human pathogens (Escherichia coli, Pseudomonas aeruginosa and Candida
albicans), which were well-known to cause several diseases. The inhibitory effect of aqueous and alcohol
extract was studied using the agar-well diffusion method. The study showed that 10% aqueous lemongrass
extract indicated maximum antimicrobial activity of 30, 28 and 25 mm alongside E. coli, C. albicans and
P. aeruginosa, respectively. The ethanolic lemongrass extract displayed the highest inhibitory result at
26, 23 and 20 mm, respectively. In contrast, the methanolic lemongrass extract showed the highest
inhibitory result at 26, 25 and 22 mm, respectively. This study resolved that both aqueous and alcoholic
lemongrass extract had unlimited potential as a microbicide and could be used for numerous human
pathogens.
Key words : Microbicide, antimicrobial activity, lemongrass, burns, aqueous, alcoholic extract