Chiang Mai Journal of Science

Biochemical  tests  were  used  for  identification  of  105  isolates  of  lactobacilli  isolated  from  24  fermented  foods. The  domainant  species  found  were  Lactobacillus  fermentum, L.  plantarum  and  L.  brevis.  Plasmids  profiles  of  these  isolated  lactobacilli  were  further  investigated. Tnterestingly, only  twelve  bacterial  isolates  containing  plasmids  were  detected  (11.43%). Their  plasmid  patterns  were  variable  with  plasmid  bands  ranging  from  six  to  eight. Furthermore, these  plasmid  harboring  lactobacilli  were evaluated  by  16S  rRNA  gene  sequencing.