Species Lacticaseibacillus casei

Name: Lacticaseibacillus casei (Orla-Jensen 1916) Zheng et al. 2020

Category, proposed as: species, comb. nov.

Basonym: "Caseobacterium vulgare" Orla-Jensen 1916

Etymology: ca’se.i. L. gen. neut. n. casei, of cheese

Pronunciation (Latin), gender: lak-ti-ka-se-i-ba-KIL-lus KA-se-i, masculine

Type strain: ATCC 393T; BCRC 10697; CCRC 10697; CCUG 21451; CECT 475; CIP 103137; DSM 20011; Hucker03; IAM 12473; IFO 15883; KCTC 3109; LMG 6904; NBIMCC 3485; NBRC 15883; NCIB 11970; NCIMB 11970; NRRL B-1922; Orla-Jensen 7; OrlandL-323; Tittsler303

Conduct genome-based taxonomy at

16S rRNA gene: KP326371 Analyse FASTA

Valid publication: Zheng J, Wittouck S, Salvetti E, Franz CMAP, Harris HMB, Mattarelli P, O'Toole PW, Pot B, Vandamme P, Walter J, et al. A taxonomic note on the genus Lactobacillus: Description of 23 novel genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae. Int J Syst Evol Microbiol 2020; 70:2782-2858. 🇮🇹

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 70, part 4 of the IJSEM. Int J Syst Evol Microbiol 2020; 70:4050-4060.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Synonyms:

  • Name	Kind
    "Caseobacterium vulgare" Orla-Jensen 1916	homotypic synonym, not validly published, basonym of name in Approved Lists
    Lactobacillus casei (Orla-Jensen 1916) Hansen and Lessel 1971 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Lacticaseibacillus Zheng et al. 2020. Publication: Zheng J, Wittouck S, Salvetti E, Franz CMAP, Harris HMB, Mattarelli P, O'Toole PW, Pot B, Vandamme P, Walter J, et al. A taxonomic note on the genus Lactobacillus: Description of 23 novel genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae. Int J Syst Evol Microbiol 2020; 70:2782-2858. 🇮🇹
  • 😩 Deposit incorrectly indicated in some sources as representing the type strain of this taxon: JCM 1134.
  • 😷 The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 1, note = "+". — 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 377 times in PubMed until 2026-06-11.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of other species in the genus.

Parent taxon: Lacticaseibacillus Zheng et al. 2020

Assigned by: Zheng J, Wittouck S, Salvetti E, Franz CMAP, Harris HMB, Mattarelli P, O'Toole PW, Pot B, Vandamme P, Walter J, et al. A taxonomic note on the genus Lactobacillus: Description of 23 novel genera, emended description of the genus Lactobacillus Beijerinck 1901, and union of Lactobacillaceae and Leuconostocaceae. Int J Syst Evol Microbiol 2020; 70:2782-2858. 🇮🇹

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Record number: 10711