Study On The Microecology Of Fermented Camels Milk From Xinjiang And The Screen Of Probiotic Lactic Acid Bacteria

Microbiological compositions of 5 samples of traditionally home-made camel milk from Wulabai in Xinjiang were analyzed;55 lactobacillus strains 80 microzyme strains were identified,and the acid and bile-resistant and cholesterol-reducing Lactobacillus strains were preliminarily screened.The results showed that:The number of bacteria, fungi, lactobacillus and intestinal bacteria of fermented camel milk is similar, but the number of Bacillus is very different from each other.The number ranges from 0 to 3.28 logcfu /mL .The highest number of Bacillus is 3.28 logcfu /mL in the fourth fermented milk, and there is no Bacillus in the fifth fermented milk.Among of 55 lactobacillus strains,11 strains are Lactobacillus plantarum, 3 strains are Lactobacillus casei, 5 strains are Lactobacillus helevticus, 3 strains are Lactobacillus curvatus, 1 strains are Lactobacillus coryniformis subsp.coryniformis,1 strains are Lactobacillus zeae, 4 strains are Lactobacillus acidophilus, 4 strains are L.lactis subsp.cremoris, 7 strains are Lactococcus lactis subsp Lactis, 2 strains are L.raffinolactis, 3 strains are Enterococcus durans, 5 strains are Enterococcus faecalis, 2 strains are Enterococcus avium, 1 strains are Enterococcus faecium, 1 strains are L.mesenteroides and 2 strains have not been identified.Among of 80 microzyme strains, 2 strains are Torulaspora debrueckii,14 strains are Kluyveromyces marxianus, 4 strains are Candida lambica,12 strains are Candida kefyr,2 strains are Pichia humboldlii, 10 strains are Pichia pastoris fermentation, 8strains are Pichia membranaefaciens,8 strains are Kloeckera lindner, 4 strains are Saccharomyces cerevisiae, 4 strains are Saccharomyces exiguut ,6 strains are Saccharomycodes sinesi, 4strains are Saccharomycodes ludwigii, 2 strains are Lodderomyces elongisporus.The strains,more than 30% of which are tolerant to pH3.0 and 0.3% sodium taurocholate and can reduce the content of cholesterol to 40% or more,are 25 Lactobacillus acidophilus, Q20 Enterococcus avium.