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Isolation of Lactic Acid Probiotic Strains From Iranian Camel Milk: Technological and Antioxidant Properties Publisher



Rezaei M1 ; Noori N1 ; Shariatifar N2 ; Gandomi H1 ; Akhondzadeh Basti A1 ; Mousavi Khaneghah A3
Authors

Source: LWT Published:2020


Abstract

The present study aimed to isolate lactic acid strains from 105 camel milk samples from 6 provinces of Iran to investigate their probiotic, technological, and antioxidant properties. Seven identified lactic acid bacteria strains by 16S rRNA gene sequence analysis were Enterococcus faecium MN994352, Lactococcus lactis MN994342, and MT032418, Leuconostoc mesenteroides MT032416, MN994377, MN994378, and MT032415. The results showed that the studied strains successfully met all of the criteria. It has also been observed that bovine milk has a positive effect on the survival of lactic acid strains in the simulated gastric fluid. Great ability in co-aggregation with pathogens was observed in the auto-aggregation capable strains. Among the investigated food pathogens, Staphylococcus aureus was the most susceptible pathogen to the tested probiotic strains. The results also showed that all strains had strong antioxidants, lipolytic, and proteolytic activity, as well as a great ability to produce exopolysaccharide. According to technological analysis, the isolated strain could be used as a starter or co-culture to improve the rheological properties of food products, to enhance the total antioxidant status, and to reduce oxidative stress markers. © 2020 Elsevier Ltd
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