Name: Slackia equolifaciens Jin et al. 2010

Category: Species

Proposed as: sp. nov.

Etymology: e.quo.li.fa’ci.ens. N.L. neut. n. equol -olis, equol; L. pres. part. faciens, making; N.L. fem. part. adj. equolifaciens, equol-producing

Pronunciation, gender: … e-kwo-li-FA-ki-ens, feminine

Type strain: CCUG 58231; DSM 24851; DZE; JCM 16059

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB910741 Analyse FASTA

Valid publication: Jin JS, Kitahara M, Sakamoto M, Hattori M, Benno Y. Slackia equolifaciens sp. nov., a human intestinal bacterium capable of producing equol. Int J Syst Evol Microbiol 2010; 60:1721-1724. 🇯🇵

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 60, part 8 of the IJSEM. Int J Syst Evol Microbiol 2010; 60:2511-2512.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Notes:
  • 😷 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 11 times in PubMed until 2025-06-04.
  • 🙆 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: Slackia Wade et al. 1999

Assigned by: Jin JS, Kitahara M, Sakamoto M, Hattori M, Benno Y. Slackia equolifaciens sp. nov., a human intestinal bacterium capable of producing equol. Int J Syst Evol Microbiol 2010; 60:1721-1724. 🇯🇵

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Record number: 788658