Screening,identification and characteristics of Lactic acid bacteria from raw camel milk
[Objective]To explore lactic acid bacteria(LAB)resources in raw camel milk.[Methods]Raw camel milk samples were collected around Nanshan mountain in Urumqi,Xinjiang and the strains were i-solated by the plate dilution method.The 16S rRNA gene sequences and morphological observation were car-ried out to clarify the taxonomic status of the strains,and edible safety characteristics such as detecting hemol-ysis and harmful metabolites.[Results]Results showed that a total of 29 LAB strains were isolated and identi-fied,which belonged to 4 species in Leuconostoc and Lentilactobacillus;the tested strains could tolerate 0.5%bile salt,5%NaCl,and showed good high temperature resistance,milk peptonization,anti-oxidation,dif-ferent enzyme activities,and antibacterial properties.None of strains were positive for hemolysis and produce nitroreductase.No biogenic amines were produced from amino acids by strains except T12.[Conclusion]The LAB obtained from camel milk in this study has good fermentation characteristics and food safety.
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