| Enterococcus lactis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Lactobacillales, Family Enterococcaceae, Genus Enterococcus, Enterococcus
lactis Morandi et al. 2012.
lactis Morandi et al. 2012.
Gram-positive, spherical cells, arranged in pairs or short chains. Non-motile.
Non-spore-forming.
Non-spore-forming.
On M17, MRS and blood agar, colonies are whitish, smooth and circular with entire
margins. Grows with 2.0-6.5 % NaCl, at 10-45 ºC and at pH 9.6. Alpha-haemolytic.
Facultatively anaerobic. In litmus milk, grows and causes acidification, reduction and
clotting within 24 h.
margins. Grows with 2.0-6.5 % NaCl, at 10-45 ºC and at pH 9.6. Alpha-haemolytic.
Facultatively anaerobic. In litmus milk, grows and causes acidification, reduction and
clotting within 24 h.
Isolated from Bitto cheese, a raw milk cheese produced in a restricted Italian alpine area.
Susceptible to vancomycin.
Susceptible to vancomycin.
Undetermined.
- Morandi S, Cremonesi P, Povolo M, Brasca M. Enterococcus lactis sp. nov., from Italian raw milk cheeses. Int J Syst Evol Microbiol
2012; 62:1992-1996.
Positive results for arginine dihydrolase, esculin hydrolysis, leucine aminopeptidase, pyrrolidonyl arylamidase, Voges-Proskauer test,
acid production from L-arabinose, arbutin, cellobiose, D-fructose, galactose, beta-gentiobiose, D-glucose (without gas production),
lactose, maltose, L-mannitol, D-mannose, methyl alpha-D-mannoside, melibiose, N-acetylglucosamine, ribose, salicin, starch (weak),
D-tagatose and trehalose
Negative results for alkaline phosphatase, catalase, alpha-galactosidase, beta-glucuronidase, gelatin hydrolysis, hippurate hydrolysis,
tributyrin hydrolysis, acid production from adonitol, amygdalin, D-arabinose, D- and L-arabitol, dulcitol, erythritol, D- and L-fucose,
gluconate, methyl alpha-D-glucoside, glycerol, glycogen, inositol, inulin, 2- and 5-ketogluconate, D-lyxose, melezitose, raffinose,
rhamnose, sorbitol, L-sorbose, sucrose, turanose, xylitol, methyl beta-D-xyloside, D-and L-xylose.
Variable results for beta-galactosidase.
acid production from L-arabinose, arbutin, cellobiose, D-fructose, galactose, beta-gentiobiose, D-glucose (without gas production),
lactose, maltose, L-mannitol, D-mannose, methyl alpha-D-mannoside, melibiose, N-acetylglucosamine, ribose, salicin, starch (weak),
D-tagatose and trehalose
Negative results for alkaline phosphatase, catalase, alpha-galactosidase, beta-glucuronidase, gelatin hydrolysis, hippurate hydrolysis,
tributyrin hydrolysis, acid production from adonitol, amygdalin, D-arabinose, D- and L-arabitol, dulcitol, erythritol, D- and L-fucose,
gluconate, methyl alpha-D-glucoside, glycerol, glycogen, inositol, inulin, 2- and 5-ketogluconate, D-lyxose, melezitose, raffinose,
rhamnose, sorbitol, L-sorbose, sucrose, turanose, xylitol, methyl beta-D-xyloside, D-and L-xylose.
Variable results for beta-galactosidase.
(c) Costin Stoica
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