TABLE 1.

Currently assigned species of the genus Bifidobacterium

Species no.aNamebSubspeciesOriginc%G+CdReference
1B. adolescentisIntestine of adult59.6 ± 0.8248
2B. angulatumHuman feces59.0 ± 0.1270
3B. animalisB. animalis subsp. animalisAnimal feces60.1 ± 0.3189
B. animalis subsp. lactisYogurt61.9185
4B. asteroidesIntestine of honeybee59.0272
5B. bifidumInfant feces62.3315
6B. bombiIntestine of bumblebee47.2140
7B. boumRumen of cattle60 ± 0.2273
8B. breveIntestine of infant58.8 ± 0.4248
9B. catenulatumIntestine of adult54.0 ± 0.2270
10B. choerinumPorcine feces66.3 ± 0.2273
11B. coryneformeIntestine of honeybeeND28
12B. crudilactisRaw milk56.468
13B. cuniculiFeces of rabbit64.1 ± 0.4273
14B. dentiumHuman dental caries61.2 ± 0.4270
15B. gallicumHuman fecesND159
16B. gallinarumChicken cecum65.7 ± 1.5343
17B. indicumIntestine of honeybee60.0272
18B. longumB. longum subsp. infantisIntestine of infant60.5 ± 0.3248
B. longum subsp. longumIntestine of adult60.8 ± 0.8248
B. longum subsp. suisPorcine feces62.0179
19B. magnumRabbit feces60.0 ± 0.6274
20B. merycicumBovine rumenND26
21B. minimumSewage61.528
22B. pseudocatenulatumInfant feces57.5 ± 0.3273
23B. pseudolongumB. pseudolongum subsp. globosumBovine rumen63.8 ± 0.428
B. pseudolongum subsp. pseudolongumPorcine feces59.5 ± 0.4346
24B. pyschraerophilumPorcine feces59.2291
25B. pullorumChicken feces67.5 ± 0.4318
26B. ruminantiumBovine rumenND26
27B. saeculareRabbit fecesND27
28B. scardoviiHuman bloodND123
29B. subtileSewage61.528
30B. thermophilumPorcine feces60.0189
31B. thermacidophilumB. thermacidophilum subsp. porcinumPorcine fecesND354
B. thermacidophilum subsp. thermacidophilumSewageND77
  • 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.