Antagonistic activity of Lactococcus lactis isolated from raw cow | 30683
Journal of Probiotics & Health

Journal of Probiotics & Health
Open Access

ISSN: 2329-8901

Antagonistic activity of Lactococcus lactis isolated from raw cow’s milk of Mostaganem (Algeria) against Escherichia coli causing urinary tract infections

4th International Conference and Exhibition on Probiotics, Functional and Baby Foods

November 03-05, 2015 Valencia, Spain

Zergoug Amina, Cheriguene Abderrahim and Chougrani Fadela

University of Mostaganem, Algeria

Posters-Accepted Abstracts: J Prob Health

Abstract :

Lactic acid bacteria are a heterogeneous group of microorganisms having in common the production of lactic acid as an end product of metabolism. Lactococcus lactis as probiotics bacteria are being increasingly studied for their inhibitory activity against pathogenic bacteria. The aim of this study is to investigate the inhibitory effect of lactic acid bacteria, we studied the antagonistic activity of Lactococcus lactis strains isolated from raw cow��?s milk from the region of Mostaganem (western Algeria) by the method of agar well diffusion against Escherichia coli obtained from urinary tract infection (UTI) patients, UTI is considered as the most common bacterial infection. The interaction between Lactococcus lactis and Escherichia coli has led to the appearance of important areas of inhibitions with diameters varying among 09 and 20 mm. In order to detect the nature of the inhibitory agent, other additional testes were taken. The results obtained are encouraging and take into consideration; as well it showed the activity of antibacterial substances of this probiotic towards the pathogenic species causing urinary tract infections.

Biography :

Zergoug Amina has completed her Master’s degree in 2013. She is currently a PhD student and Young Researcher at the Laboratory of Microbiology and Plant Biology from the University of Mostaganem (Algeria) in Applied Microbiology. She is also a Part Time Lecturer at the University of Mostaganem, Department of Biology on “Fermentation and extraction of metabolites” and “Methods of microbiological analysis” for the promotions of Master’s degree.