The isolates which showed different PFGE patterns compared to
the pattern of the inoculated strains were subjected to DNA
extraction to according to Doulgeraki, Paramithiotis, and Nychas
(2011). Specific multiplex PCR targeting recA gene was then
applied for the differentiation of L. plantarum, L. pentosus and
Lactobacillus paraplantarum (Torriani, Felis, & Dellaglio, 2001).