Table 1. Major Producers of SCFAs in Human Gut^{33,35,57,79,232}.

Substrate	Metabolite (Number of carbon atoms)	Major Producers
Polysaccharides/Glycan	Butyrate (C4)	Eubacterium ruminantium, Roseburia inulinivorans, Faecalibacterium prausnitzii, Ruminococcus bromii, Anaerostipes spp., Butyrivibrio fibrisolvens, Clostridium leptum, Ruminococcus gnavus, Eubacterium hallii, Eubacterium rectale, Faecalibacterium prausnitzii, Coprococcus comes, Coprococcus catus, Clostridium acetobutylicum, Roseburia intestinalis, Eubacterium cylindroides, Coprococcus eutactus
	Propionate (C3)	Eubacterium dolichum, Akkermansia muciniphila, Roseburia inulinivorans, Ruminococcus obeum, Dialister succinatiphilus, Bacteroides fragilis, Bacteroides eggerthii, Megasphaera elsdenii, Salmonella enterica, Blautia wexleri, Coprococcus catus, Phascolarctobacterium succinatutens, Eubacterium hallii, Bacteroides spp., Anaerostipes spp., Veillonella parvula, Ruminococcus bromii
	Acetate (C2)	Akkermansia muciniphila, Faecalibacterium prausnitzii, Eubacterium cylindroides, Blautia hydrogenotrophica, Prevotella spp., Clostridium spp., Streptococcus spp., Ruminococcus gnavus, Coprococcus spp., Bacteroides spp., Bifidobacterium spp., Methanobrevibacter smithii, Eubacterium hallii,