Leuconostoc lactis

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Gram stain Culture

General information
- Taxonomy
  Family: Lactobacillaceae
  
  Natural habitats
  Found in plant material, vegetables, dairy products, and starter cultures for fermentation.
  
  Clinical significance
  Less common, but implicated in sporadic bacteremia cases.
  
  Leuconostoc is intrinsically resistant to vancomycin
Gram stain
- Gram positive coccus
  
  0.5-0.7 x 0.7-1.2 µm
  
  occuring in pairs and chains.
  
  Sometimes short rods with rounded ends in long chains.
Culture characteristics
- Facultatief anaeroob
  
  BA: they produce small, gray-whitish, alpha hemolytic or nonhemolytic colonies on blood agar.
  
  Colony morphology resembles a Streptococcus.
  
  BBAØ: growth
Characteristics
References
- James Versalovic et al.(2011) Manual of Clinical Microbiology 10th Edition