Bacteria and yeasts present in kefir and kefir grains.

	Strain	References
Bacteria
Lactobacilli	Lactobacillus kefir, Lactobacillus viridescens, Lactobacillus helveticus, Lactobacillus fermentum, Lactobacillus acidophilus, Lactobacillus hilgardii, Lactobacillus plantarum, Lactobacillus fructivorans, Lactobacillus brevis, Lactobacilli paracasei, Lactobacillus parakefir, Lactobacillus casei, Lactobacillus kefirgranum, Lactobacillus rhamnosus, Lactobacillus kefiranofaciens, Lactobacillus delbrueckii	7 and 54–57
Streptococci	Streptococcus thermophilus	54
Enterococci	Enterococcus durans	58
Leuconostocs	Leuconostoc spp., Leuconostoc mesenteroides	7, 55 and 59
Acetobacter	Acetobacter sp., Acetobacter aceti	7, 55 and 57
Bacillus	Bacillus sp., Bacillus subtilis	57
Yeast
Saccharomyces	Saccharomyces delbrueckii, Saccharomyces dairensis, Saccharomyces turicensis	54 and 57
Candida	Candida tannotelerans, Candida valida, Candida inconspicua, Candida holmii, Candida kefir, Candida valida, Candida lambica	54, 57 and 60
Pichia	Pichia fermentans	54 and 61
Issatchenkia	Issatchenkia occidentalis	60
Brettanomyces	Brettanomyces anomalush	61
Torulaspora	Torulaspora delbrueckiia	54, 57 and 61