Table 3. Numbers and percentages of bacterial operational taxonomic units (OTUs) identified in two kefir grains from distant geographic origin in Greece (kefir A grain originating from Athens and kefir B from Crete).

Bacterial genus or species	N(bacterial OTU)			N(bacterial OTU)/%
	Kefir A	Kefir B		Kefir A	Kefir B
Lactobacillus kefiranofaciens	142970	138125		95.005	96.318
Lactobacillus kefiri	4133	2494		2.746	1.739
Lactobacillus parakefiri	367	59		0.246	0.041
Faecalibacterium spp.	321	351		0.215	0.247
Bacteroides spp.	191	159		0.128	0.112
Pseudobutyrivibrio spp.	119	120		0.080	0.084
Clostridium spp.	118	99		0.079	0.070
Coprococcus spp.	96	104		0.064	0.073
Blautia spp.	85	100		0.057	0.070
Subdoligranulum spp.	81	73		0.054	0.051
Acinetobacter johnsonii	96	23		0.064	0.016
Olsenella spp.	68	54		0.046	0.038
Lactobacillus crispatus	46	28		0.031	0.020
Allobaculum spp.	37	22		0.025	0.015
Ruminococcus spp.	34	39		0.023	0.027
Bacteroides barnesiae	32	31		0.021	0.022
Anaeroplasma spp.	28	25		0.019	0.018
Shuttleworthia spp.	25	26		0.017	0.018
Phascolarctobacterium spp.	24	22		0.016	0.015
Paraprevotella	21	23		0.014	0.016
Lactobacillus aviarius	20	21		0.013	0.015
Parabacteroides spp.	18	12		0.012	0.008
Oscillospira spp.	15	9		0.010	0.006
Alistipes spp.	13	15		0.009	0.011
Flavonifractor spp.	13	8		0.009	0.006
Moryella	13	15		0.009	0.011
Bacteroides salanitronis	12	15		0.008	0.011
Lactobacillus spp.	10	7		0.007	0.005
Anaerotruncus spp.	9	8		0.006	0.006
Sutterella	9	8		0.006	0.006
Thalassospira spp.	8	9		0.005	0.006
Bacteroides plebeius	6	1		0.004	0.001
Slackia spp.	6	7		0.004	0.005
Clostridium orbiscindens	5	7		0.003	0.005
Papillibacter spp.	4	3		0.003	0.002
Roseburia	4	9		0.003	0.006
Turicibacter spp.	4	8		0.003	0.006
Anaerofilum spp.	3	3		0.002	0.002
Bacillus spp.	3	2		0.002	0.001
Bacteroides coprocola	3	3		0.002	0.002
Clostridium lactatifermentans	3	1		0.002	0.001
Leuconostoc mesenteroides dextranicum	3	0		0.002	0.000
Mucispirillum spp.	3	4		0.002	0.003
Pseudomonas fluorescens	3	1		0.002	0.001
Bacteroides coprophilus	2	7		0.001	0.005
Collinsella	2	2		0.001	0.001
Enterococcus cecorum	2	4		0.001	0.003
Lactobacillus agilis	2	0		0.001	0.000
Lactobacillus salivarius	2	1		0.001	0.001
Marvinbryantia	2	4		0.001	0.003
Oscillibacter spp.	2	3		0.001	0.002
Veillonella magna	2	1		0.001	0.001
Aeriscardovia aeriphila	1	0		0.001	0.000
Akkermansia	1	0		0.001	0.000
Anaerostipes	1	0		0.001	0.000
Bacteroides capillosus	1	0		0.001	0.000
Barnesiella spp.	1	0		0.001	0.000
Dorea	1	0		0.001	0.000
Peptococcus spp.	1	2		0.001	0.001
Prevotella spp.	1	0		0.001	0.000
Pseudoflavonifractor spp.	1	0		0.001	0.000
Fusobacterium mortiferum	0	1		0.000	0.001
Megamonas spp.	0	2		0.000	0.001
Megasphaera	0	1		0.000	0.001
Oxalobacter spp.	0	1		0.000	0.001