TABLE 1.
Currently assigned species of the genus Bifidobacterium
| Species no.a | Nameb | Subspecies | Originc | %G+Cd | Reference |
|---|---|---|---|---|---|
| 1 | B. adolescentis | Intestine of adult | 59.6 ± 0.8 | 248 | |
| 2 | B. angulatum | Human feces | 59.0 ± 0.1 | 270 | |
| 3 | B. animalis | B. animalis subsp. animalis | Animal feces | 60.1 ± 0.3 | 189 |
| B. animalis subsp. lactis | Yogurt | 61.9 | 185 | ||
| 4 | B. asteroides | Intestine of honeybee | 59.0 | 272 | |
| 5 | B. bifidum | Infant feces | 62.3 | 315 | |
| 6 | B. bombi | Intestine of bumblebee | 47.2 | 140 | |
| 7 | B. boum | Rumen of cattle | 60 ± 0.2 | 273 | |
| 8 | B. breve | Intestine of infant | 58.8 ± 0.4 | 248 | |
| 9 | B. catenulatum | Intestine of adult | 54.0 ± 0.2 | 270 | |
| 10 | B. choerinum | Porcine feces | 66.3 ± 0.2 | 273 | |
| 11 | B. coryneforme | Intestine of honeybee | ND | 28 | |
| 12 | B. crudilactis | Raw milk | 56.4 | 68 | |
| 13 | B. cuniculi | Feces of rabbit | 64.1 ± 0.4 | 273 | |
| 14 | B. dentium | Human dental caries | 61.2 ± 0.4 | 270 | |
| 15 | B. gallicum | Human feces | ND | 159 | |
| 16 | B. gallinarum | Chicken cecum | 65.7 ± 1.5 | 343 | |
| 17 | B. indicum | Intestine of honeybee | 60.0 | 272 | |
| 18 | B. longum | B. longum subsp. infantis | Intestine of infant | 60.5 ± 0.3 | 248 |
| B. longum subsp. longum | Intestine of adult | 60.8 ± 0.8 | 248 | ||
| B. longum subsp. suis | Porcine feces | 62.0 | 179 | ||
| 19 | B. magnum | Rabbit feces | 60.0 ± 0.6 | 274 | |
| 20 | B. merycicum | Bovine rumen | ND | 26 | |
| 21 | B. minimum | Sewage | 61.5 | 28 | |
| 22 | B. pseudocatenulatum | Infant feces | 57.5 ± 0.3 | 273 | |
| 23 | B. pseudolongum | B. pseudolongum subsp. globosum | Bovine rumen | 63.8 ± 0.4 | 28 |
| B. pseudolongum subsp. pseudolongum | Porcine feces | 59.5 ± 0.4 | 346 | ||
| 24 | B. pyschraerophilum | Porcine feces | 59.2 | 291 | |
| 25 | B. pullorum | Chicken feces | 67.5 ± 0.4 | 318 | |
| 26 | B. ruminantium | Bovine rumen | ND | 26 | |
| 27 | B. saeculare | Rabbit feces | ND | 27 | |
| 28 | B. scardovii | Human blood | ND | 123 | |
| 29 | B. subtile | Sewage | 61.5 | 28 | |
| 30 | B. thermophilum | Porcine feces | 60.0 | 189 | |
| 31 | B. thermacidophilum | B. thermacidophilum subsp. porcinum | Porcine feces | ND | 354 |
| B. thermacidophilum subsp. thermacidophilum | Sewage | ND | 77 |
a
There are 31 Bifidobacterium species to date.
b
B. aerophilum, B. denticolens, and B. inopinatum were reclassified as Aeriscardovia aeriphila, Parascardovia denticolens, and Scardovia inopinata, respectively.
c
Environment from which the species was initially isolated.
d
Mean ± SD. ND, not determined.