Lentilactobacillus kefiri

(aka Lactobacillus kefiri)

Bacteria
General | Carbohydrate O/F | Substrate utilisation | Enzymes | Metabolites | Antibiotics

Overview

  • Lentilactobacillus kefiri, (aka Lactobacillus kefiri), is a Gram-positive, non-spore-forming, microaerophilic, non-motile, rod-shaped bacterium. It has been detected in at least 2 gut microbiome compilation studies or metastudies. The DNA G+C content is 41.5%. Lentilactobacillus kefiri is unlikely to be a gut coloniser. (Kandler1983)



  • This organism has been recovered from kefir (sour milk). The risk classification (www.baua.de) for this organism is 1, i.e., low risk of infection and spread. Pathogenicity status unknown, or very unlikely to be pathogenic. Likely to be transient and not a long-term gut commensal. Robust growth can have positive consequences for gut health.
    • QUIRKS
  • Probiotic.
    • GENERAL CHARACTERISTICS (Kandler1983);
    Character Response
  • Substrates hydrolysed or digested:
  • arginine;
  • 🌡
  • Temperature tolerance:
  • grows at 10℃; grows at 40℃; Grows optimally at 30℃.
  • H+
  • Acid from carbohydrates usually produced:
  • L-arabinose; fructose; galactose; glucose; ribose; lactose; maltose; melibiose; gluconate;
    • SPECIAL FEATURES (Kandler1983);
    Character Response
  • ✓
  • Metabolites produced:
  • acetate; lactate (major); ethanol; ammonia;
  • ✗
  • Metabolites not produced:
  • Hâ‚‚S; indole;
  • ✗
  • NO3➔NO2:
  • not reduced

    • Details

    GENERAL
    Lineage Physiology General Growth Tolerances Hydrol./digest./degr.
    Phylum:  Firmicutes Class:  Bacilli Order:  Lactobacillales Family:  Lactobacillaceae Genus:  Lentilactobacillus Alt. name:  Lactobacillus kefiri Gram stain:  + O2 Relation.:  microaerophilic Spore:  No spore Motility:  Sessile Morphology:  Rod
    Health:   Positive
    Source:  kefir (sour milk)
    DNA G+C(%):  41.5
    Opt. T:  30℃
    Low T(℃):  10(+)
    Mid T(℃):  40(+)
    		Arginine:  +
    CARBOHYDRATE ACID FORMATION
    Monosaccharide O/F Oligosaccharide O/F Polysaccharide O/F Polyol O/F Other O/F
    D-Arabinose:  neg L-Arabinose:  + Fructose:  d(+) Fucose:  neg D-Fucose:  neg Galactose:  + Glucose:  + Mannose:  neg D-Lyxose:  neg Rhamnose:  neg Ribose:  + Sorbose:  neg D-Tagatose:  neg Xylose:  neg L-Xylose:  neg Cellubiose:  neg Gentiobiose:  neg Lactose:  + Maltose:  + Melezitose:  neg Melibiose:  + Sucrose:  neg Trehalose:  neg Turanose:  neg Amygdalin:  neg Aesculin:  vr Glycogen:  neg Inulin:  neg Starch:  neg Adonitol:  neg D-Arabitol:  neg L-Arabitol:  neg Dulcitol:  neg Erythritol:  neg Glycerol:  neg Inositol:  neg Mannitol:  neg Sorbitol:  neg Xylitol:  neg Arbutin:  neg Gluconate:  + 2-Ketogluconate:  vr 5-Ketogluconate:  neg Me-α-D-Glc:  neg Me-α-D-Mann:  neg Me-Xyloside:  neg NAc-α-GA:  neg Salicin:  neg
    ENZYME ACTIVITY
    Enzymes: General Enzymes: Carbohydrate Enzymes: Protein Enzymes: Arylamidases Enzymes: Esters/fats
    Catalase:  neg
    METABOLITES - PRODUCTION & USE
    Fuel Usable Metabolites Metabolites Released Special Products Compounds Produced

    		Acetate:  + Lactate:  Major(+) Ethanol:  + H2S:  neg Ammonia:  + Indole:  neg

    References

    SPECIFIC REFERENCES FOR LENTILACTOBACILLUS KEFIRI
  • Kandler1983 - Lactobacillus kefir sp. nov., a component of the microflora of Kefir.
  • Collins1991a - Phylogenetic analysis of the genus Lactobacillus and related lactic acid bacteria as determined by reverse transcriptase sequencing of 16S rRNA.
  • ...............................
    • GUT MICROBIOME COMPILATIONS AND METASTUDIES FOR LENTILACTOBACILLUS KEFIRI
  • Byrd2020 - Stability and dynamics of the human gut microbiome and its association with systemic immune traits.
  • Lagier2016 - Culture of previously uncultured members of the human gut microbiota by culturomics.
  • ...............................
    • GENERAL REFERENCES FOR LENTILACTOBACILLUS KEFIRI
  • BacDiveAPI - BacDive API(R) test finder (bacdive.dsmz.de/api-test-finder)
    • Added: January 14, 2022