Species Bifidobacterium lactis

Name: Bifidobacterium lactis Meile et al. 1997

Category: Species

Proposed as: sp. nov.

Etymology: lac’tis. L. neut. n. lac, milk; L. gen. neut. n. lactis, of milk

Pronunciation (Latin), gender: bi-fi-do-bak-TE-ri-um LAK-tis, neuter

Type strain: CCUG 37979; CIP 105265; DSM 10140; JCM 10602; LMG 18314; UR1

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB050136 Analyse FASTA

Effective publication: Meile L, Ludwig W, Rueger U, Gut C, Kaufmann P, Dasen G, Wenger S, Teuber M. Bifidobacterium lactis sp. nov., a moderately oxygen tolerant species isolated from fermented milk. Syst. Appl. Microbiol. 1997; 20:57-64. 🇨🇭

IJSEM list: Anonymous. Validation list no. 62. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1997; 47:915-916.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Bifidobacterium animalis subsp. lactis (Meile et al. 1997) Masco et al. 2004

Risk group: 1

Synonyms:

Name	Kind
Bifidobacterium animalis subsp. lactis (Meile et al. 1997) Masco et al. 2004	homotypic synonym, validly published under the ICNP, distinct rank

Notes:
- ❗ Bifidobacterium lactis is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Bifidobacterium.
- 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
- 🎓 Name mentioned 770 times in PubMed until 2026-06-11.
- 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of the genus.
- 🧍 See also: Publication: Klein G. International Committee on Systematic Bacteriology. Subcommittee on the taxonomy of Bifidobacterium, Lactobacillus and related organisms. Minutes of the meetings, 22 and 23 September 1999, Veldhoven, The Netherlands. Int. J. Syst. Evol. Microbiol. 2001; 51:259-261.
- 🧍 The levels of DNA-DNA hybridization between the type strains of Bifidobacterium lactis and Bifidobacterium animalis range from 85.5 to 92.3%. So, Bifidobacterium lactis Meile et al. 1997 is a later heterotypic synonym of Bifidobacterium animalis (Mitsuoka 1969) Scardovi and Trovatelli 1974 (Approved Lists 1980). Publication: Cai Y, Matsumoto M, Benno Y. Bifidobacterium lactis Meile et al. 1997 is a subjective synonym of Bifidobacterium animalis (Mitsuoka 1969) Scardovi and Trovatelli 1974. Microbiol Immunol 2000; 44:815-820. 🇯🇵

Parent taxon: Bifidobacterium Orla-Jensen 1924 (Approved Lists 1980)

Assigned by: Meile L, Ludwig W, Rueger U, Gut C, Kaufmann P, Dasen G, Wenger S, Teuber M. Bifidobacterium lactis sp. nov., a moderately oxygen tolerant species isolated from fermented milk. Syst. Appl. Microbiol. 1997; 20:57-64. 🇨🇭

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Record number: 774042

This LPSN page was printed on 2026-08-11 08:26:21

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Species Bifidobacterium lactis