Assessment of antimicrobial activity of onion (Allium cepa) and garlic (Allium sativum) extracts on Listeria monocytogenes; in vitro study

Abstract

 Background: Allium sativum (garlic) and Allium cepa (onion) are well-known indigenous herbal medicine since ancient times and held a place of honor in Indian traditional ayurvedic medicine.  Objective of the study: Assessment of antimicrobial activity of onion (Allium cepa) and garlic (Allium sativum) extracts on Listeria monocytogenes.  Results and conclusion: Antibacterial activity of extracts of Allium sativum (garlic) and Allium cepa (onion) has been evaluated against (Listeria monocytogenes a 4/b). The results showed that good activity of organic solvents extract and the activity depends on extract concentration. On contrast low effect was observed with boiling water extract and no activity was observed with cold water extract. Also the results of the present work illustrate the inhibitory effects of Allium sativum crude extracts on L. monocytogenes. The results proved a good activity of cold water extract and the activity depend on extract concentration. On contrast low effect was observed with organic solvents extract and no activity was observed with boiling water extract.