Table 1: The composition of human colonic microbiome: phylums and selected major species belonging to each phylum [14, 17].

PhylumSpecies

ActinobacteriaBifidobacterium
BacteroidetesBacteroides, Prevotella, Porphyromonas
VerrucomicrobiaAkkermansia
FirmicutesClostridium, Faecalibacterium, Ruminococcus, Roseburia, Veillonella, Staphylococcus, Streptococcus, segmented filamentous bacteria, Butyrivibrio
TenericutesErysipelotrichaceae
ProteobacteriaCitrobacter, Enterobacter, E.  coli, Shigella, Klebsiella, Hemophilus, Sphingomonas
CyanobacteriaUnclassified YS2