Evaluation of antimicrobial effect of Hop water extract with Humulune from Hop against Staphylococcus aureus, Enterobacter aerogenes, Listeria monocytogenes and Salmonella enterica

مجله پژوهشهای علوم و صنایع غذایی ایران

Article 12, Volume 11, Issue 2 - Serial Number 32, May and June 2015, Pages 218-224   

Document Type: Short Article

DOI: 10.22067/ifstrj.v1394i2.38741

Authors

Ali Mohamadi Sani^* ; Mryam Azami; Masoud Yavarmanesh

Abstract

Plants derived products have been used for medicinal purposes for centuries because of antimicrobial activity. In this investigation Antibacterial effect of Hop(Humulus lupulus), the pharmaceutical plant which has an important place in traditional medicine of Iran, was evaluated on some of food borne pathogens .This study conducted in order to evaluate antimicrobial effect of Hop water extract compared to Humulune from Hop against Staphylococcus aureus (PTTC1431), Enterobacter aerogenes (PTCC1221), Listeria monocytogenes (PTCC1298) and Salmonella enterica (PTCC1709) by agar disk diffusion and broth microdilution methods. The results indicated that gram positive bacteria were more sensitive to the extracts compared to gram negative bacteria. The minimum inhibitory concentration (MIC) of Humulune and water extract of Hop against Staphylococcus aureus were 0.039 and 0.625 mg/ml respectively. Findings indicate that Humulune had the most antibacterial activity in both methods. The most inhibitory effect was shown against staphylococcus aureus in disk diffusion method (inhibition zone of 17mm). The effect of Humulune were more than water extract of Hop. Results indicate that Hop extract has antibacterial effect and can be used in combinational therapy or as a food preservative

Keywords

Humulus lupulus; Minimum inhibitory concentration; water extract; Humulune

References