Study On The Characeristics And Application Of Lactics Acid Bacteria Separated From Koumiss

6strains separated from koumiss were carried out in the present test. The results of physiological and biochemical identification tests and16S rRNA sequence homology analysis showed that there were4strains belonging to Enterococcus durans,2strains belonging to Pediococcus acidilactici. The results of the isolated strains of catalase test, nitrate reduction test, hydrogen sulfide and indole test were all negative. All of the6strains showed the capability to curd with the curd values about70°Υ. They all can grow under the condition of6.5%NaCl solution, pH of3.5,4.0,9.2,9.6, and after30min in60℃water. The best inoculating times for all of the six strains were10～12hours.After preliminary screening, strain HX1showed best fermentation characteristics than other strains. But its fermentation time is too long. Combining it with the standard strains of Lactobacillus bulgaricus:Lactobacillus acidophilus:HX1=1:2:2to ferment, the fermentation time was shorten obviously.