Enumeration,Genetic Characterization and Antimicrobial Susceptibility of Lactobacillus and Streptococcus Isolates from Retail Yoghurt in Beijing,China  

作　　者：DONG Yin Ping CHEN Qian CUI Sheng Hui LI Feng Qin 

机构地区：[1]Key Laboratory of Food Safety Risk Assessment,Ministry of Health,China National Centre for Food Safety Risk Assessment [2]Beijing Centre for Disease Control and Prevention [3]National Institute for Food and Drug Control

出　　处：《Biomedical and Environmental Sciences》2014年第9期740-748,共9页生物医学与环境科学（英文版）

基　　金：supported by National Health and Family Planning Commission of PRC

摘　　要：Lactic acid bacteria （LAB） are widely used in food industries. Correct identification and safety evaluation of these bacteria at the species even strain level should take considerations into account. In this study, the LAB were recovered from yoghurt and characterized phenotypically and genetically. Fifty-two isolates of LAB from 31 yoghurt samples were cultured and grouped into 6 species including Luctobucillus bulguricus （24 isolates）, Streptococcus thermophilus （15 isolates）, L. ucidophilus （7 isolates）, L. porucusei/cusei （3 isolates）, L. delbrueckii （2 isolates）, and L. fermentum （1 isolate）, based on their Gram-staining, colony morphology and biochemical properties.Lactic acid bacteria （LAB） are widely used in food industries. Correct identification and safety evaluation of these bacteria at the species even strain level should take considerations into account. In this study, the LAB were recovered from yoghurt and characterized phenotypically and genetically. Fifty-two isolates of LAB from 31 yoghurt samples were cultured and grouped into 6 species including Luctobucillus bulguricus （24 isolates）, Streptococcus thermophilus （15 isolates）, L. ucidophilus （7 isolates）, L. porucusei/cusei （3 isolates）, L. delbrueckii （2 isolates）, and L. fermentum （1 isolate）, based on their Gram-staining, colony morphology and biochemical properties.

关 键 词：Enumeration Genetic Characterization and Antimicrobial Susceptibility of Lactobacillus and Streptococcus Isolates from Retail Yoghurt in Beijing China PFGE 

分 类 号：R378.12[医药卫生—病原生物学]