Table 2.

CIassification of Probiotics and Common Representative Strains

CIassification	Representative Strains	Author
Streptococcus	Viridans Streptococcus, Streptococcus thermophilus, Streptococcus pneumoniae, Streptococcus pyogenes, Streptococcus lactis, Streptococcus faecalis, Streptococcus platus, etc.	Jin et al43
Lactobacillus	Lactobacillus lactis, Lactobacillus paracasei, Lactobacillus acidophilus, Lactobacillus casei, Lactobacillus fermentum, Lactobacillus brevis, Lactobacillus bulgaricus, Lactobacillus plantarum, etc.	Xie et al44
Bifidobacteria	Bifidobacterium bifidum, Bifidobacterium breve, Bifidobacterium infantis, Bifidobacterium longum, Bifidobacterium adolescentis, Bifidobacterium thermophilus, etc.	Liu et al45
Bacillus	Bacillus licheniformis, Bacillus megaterium, Bacillus natto, Bacillus subtilis, Bacillus amyloliquefaciens, Bacillus anthracis, Bacillus sphaericus, etc.	Cui et al46
Other classes	Escherichia coli, Photosynthetic bacteria, Propionibacterium, Football bacteria, Escherichia coli, yeast, etc.	Wang et al47 Fei et al48