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 AiM  Vol.8 No.9 , September 2018
Characterization of Lactobacillus Strains Isolated from Bovine Raw Milk for Probiotic and Technological Properties
Abstract: One hundred strains isolated from bovine raw milk, obtained from different farms, were subjected to different in vitro stress typical of gastrointestinal tract. Twelve strains were able to tolerate pepsin at pH 2, pancreatin and bile salts (0.3%). These bacteria were identified using 16S rRNA gene sequencing. Eight isolates were Lactobacillus plantarum and four were Lactobacillus fermentum. They were not able to degrade mucin and they were γ-haemolytic. All strains had antibacterial activity against Staphylococcus aureus, Listeria monocytogenes and Salmonella thyphimirium. However, only six strains inhibited Escherchia coli. All these showed ability for autoaggregation and/or hydrophobicity properties. They were also characterized in respect to their technological properties. Important acidification and low proteolytic and lipolytic capacities were detected for all strains. In addition, they were able to produce exopolysaccharides and grow at hot and cold temperatures. These bacteria may be used further for manufacturing of functional foods and confirming their suitability as probiotic starter cultures.
Cite this paper: Mahmoudi, I. , Moussa, O. , El Moulouk Khaldi, T. , Le Roux, Y. and Hassouna, M. (2018) Characterization of Lactobacillus Strains Isolated from Bovine Raw Milk for Probiotic and Technological Properties. Advances in Microbiology, 8, 719-733. doi: 10.4236/aim.2018.89048.
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