| Origin | Microorganism | Functional and biological activities |
| Argentina | Kefir grains | Lactobacillus plantarum CIDCA 83114 | Inhibit the growth of Shigella sonnei in vitro and also the cytotoxicity of Clostridium difficile toxins on eukaryotic cells |
| Lactobacillus kefir CIDCA 8348 |
| Lactobacillus lactis CIDCA 8221 |
| Kluyveromyces marxianus CIDCA 8154 |
| Saccharomyces cerevisiae CIDCA 8112 |
| China | Tibetan kefir | Lactobacillus plantarum Lp27 | Inhibited cholesterol absorption |
| Lactobacillus plantarum MA2 | Hypocholesterolemic effect |
| Kefir grains - Taiwanese milk | Lactobacillus kefiranofaciens K1 | Antiallergenic effect |
| Lactobacillus kefiranofaciens M1 | Immunoregulatory effects - anticolitis effect |
| India | Kefir grains | Lactobacillus lactis ssp. cremoris | Activity against food spoilage bacteria |
| South Africa | Kefir grains | Lactobacillus plantarum ST8KF | Bactericida effect against: Lactobacillus casei, Lactobacillus salivarius, Lactobacillus curvatus, Listeria innocu |