alexa Antimicrobial Activity And Properties Of Enterococcus Faecium Strains Isolated From Pasteurized Milk
ISSN: 2167-0501

Biochemistry & Pharmacology: Open Access
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International Conference on Pharmacognosy, Phytochemistry & Natural Products
October 21-23, 2013 Radisson Blu Plaza Hotel, Hyderabad, India

Kıvanc Merih and Yigit Tulay
Accepted Abstracts: Biochem & Pharmacol
DOI: 10.4172/2167-0501.S1.004
Abstract
Bacteria of the genus Enterococcus are ubiquitous Gram-positive, catalase-negative cocci that often occur in large numbers in vegetables, plant materials, and foods, especially those of animal origin such as dairy products. Enterococci have been used in many different applications as starters or adjunct cultures, and in foods, they seem to have a major role in improving flavor development and quality of cheese. Additionally, enterococci harbor some useful biotechnological traits, such as the production of bacteriocins with anti-listeria activity. The role and the application of enterococci in food and health and more specifically in meat and dairy products has been reviewed recently Enterococcus faecium isolated from pasteurized milk; For isolation of Enterococci the diluted homogenates were plated on M-17 medium and azide agar medium was used aerobically. The plates were incubated at 37oC for 2-3 days. All isolates were examined as described by Harrigan and McCance (1967), Schillinger and L?cke (1987) and Stiles and Holzapfel (1997). Carbohydrate fermentation tests were carried out using the API 50CHL kit according to the manufacturer?s instruction (BioMerieux, France). Ribotyping was performed with a Ribo Printer Microbial Characterization System (Qualicon Inc., Wilmington, DE) and the standard EcoRI DNA preparation kit as described in the manufacturer's operations. Antagonistic activity screening was investigated by two methods. The agar spot test and well diffusion assay, as described by Schillinger and L?che (1989), Tagg et al. (1976) and Harris et al. (1989), respectively. The amount of produced lactic acid, hydrogen peroxide, proteolytic activity of the lactic acid bacteria was determined.
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