<Emphasis Type="Italic">Lactobacillus plantarum</Emphasis> as a Probiotic Potential from Kouzeh Cheese (Traditional Iranian Cheese) and Its Antimicrobial Activity |
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Authors: | Vahid Jabbari Mahmoud Sowti Khiabani Reza Rezaei Mokarram Azad Mohammad Hassanzadeh Elham Ahmadi Sasan Gharenaghadeh Nayyer Karimi Hossein Samadi Kafil |
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Institution: | 1.Department of Food Science and Technology Faculty of Agriculture,University of Tabriz,Tabriz,Iran;2.Drug Applied Research Center,Tabriz University of Medical Sciences,Tabriz,Iran;3.Immunology Research Center,Tabriz University of Medical sciences,Tabriz,Iran;4.Biotechnology Research Center,Tabriz University of Medical Sciences,Tabriz,Iran |
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Abstract: | The aim of this study is to isolate and identify Lactobacillus plantarum isolates from traditional cheese, Kouzeh, and evaluate their antimicrobial activity against some food pathogens. In total, 56 lactic acid bacteria were isolated by morphological and biochemical methods, 12 of which were identified as Lactobacillus plantarum by biochemical method and 11 were confirmed by molecular method. For analyzing the antimicrobial activity of these isolates properly, diffusion method was performed. The isolates were identified by 318 bp band dedicated for L. plantarum. The isolated L. plantarum represented an inhibitory activity against four of the pathogenic bacteria and showed different inhibition halos against each other. The larger halos were observed against Staphylococcus aureus and Staphylococcus epidermidis (15 ± 0.3 and 14.8 ± 0.7 mm, respectively). The inhibition halo of Escherichia coli was smaller than that of other pathogen and some L. plantarum did not show any inhibitory activity against E. coli, which were resistant to antimicrobial compounds produced by L. plantarum. The isolated L. plantarum isolates with the antimicrobial activity in this study had strong probiotic properties. These results indicated the nutritional value of Kouzeh cheese and usage of the isolated isolates as probiotic strains. |
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