Maison du lait

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Biodiversity Collection

The Biodiversity collection held by The French dairy interbranch organisation (CNIEL) is composed of many microorganisms isolated from milk and dairy products of various geographical origins. This collection has grown over the years with the isolation of new strains during research programs and with the collect of news strains during campaign to save neglected collections. 


All bacterial strains listed in the figure below were purified and identified. The level of characterization of the strains is completed as the work on the collection progresses. The characterizations consist in the analysis of the technological abilities of the strains and may then include:

  • data on the growth of strains,
  • the study of the diversity of strains composing a given species / genus,
  • the acidification capacities of lactic bacterial strains,
  • the aromatic capacities of the strains,
  • the resistance of strains to bacteriophages,
  • the inhibition capacities of other bacterial strains,
  • ...


The diffusion of the collection is opened to research centers and industrials for research and technical works, excluding the commercial or industrial exploitation. Upon diffusion of the collection, a Material Transfer Agreement will be signed between the Recipient and the CNIEL, depositor of the collection.

If the recipient wishes to use a strain commercially or industrially, a specific contract will be drafted with the CNIEL.


The collection is administrated, preserved and provided by Actalia under ISO9001:2015 certification.

To place an order of more than 10 bacterial strains or for further information (including technical informations about strains), please contact Sarah Chuzeville.


Composition of the collection:

As of today, the collection is composed of 910 strains including:

  • Lactobacillus: 397 strains (including Lb. acidophilus, Lb. fermentum, Lb. helveticus, Lb. plantarum, Lb. delbrueckii, Lb. brevis, Lb. curvatus, Lb. casei/paracasei, Lb. parabuchneri, Lb. rhamnosus)
  • Lactococcus: 100 strains
  • Leuconostoc: 59 strains
  • Enterococcus: 197 strains
  • Streptococcus: 113 strains
  • Pediococcus: 17 strains
  • Propionibacterium: 27 strains

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