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Isolation and characterisation of lactic acid bacteria strains from raw camel milk for potential use in the production of fermented Tunisian dairy products

Fguiri, Imen, Ziadi, Manel, Atigui, Moufida, Ayeb, Naziha, Arroum, Samira, Assadi, Mouna, Khorchani, Touhami
International journal of dairy technology 2016 v.69 no.1 pp. 103-113
Lactobacillus brevis, Lactobacillus pentosus, Lactobacillus plantarum, Lactococcus lactis, Pediococcus pentosaceus, acidification, antibiotic resistance, biomass, camel milk, cheeses, citrates, exopolysaccharides, fermented dairy products, lactic acid bacteria, lactic fermentation, milk production, proteolysis
The aim of this work was to study the suitability of camel milk for the production of dairy products by lactic acid fermentation. Sixty strains of lactic acid bacteria (LAB) were isolated from camel milk. The strains were tested for their acidification activity, ability to use citrate, exopolysaccharide production, lipolytic, proteolytic activities and resistance to antibiotics. Ten strains were investigated for their ability to metabolize carbohydrates and that resulted in the identification of 5 Lactococcus lactis, 1 Lactobacillus pentosus, 2 Lactobacillus plantarum, 1 Lactobacillus brevis and 1 Pediococcus pentosaceus strains. Two strains of Lactococcus lactis SCC133 and SLch14 were selected to produce traditional Tunisian fermented dairy products (Lben, Raib, Jben cheese and Smen). These strains were chosen based on their acid production capacity and their ability to produce a high yield of biomass.