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A differential medium for the isolation of Kluyveromyces marxianus and Kluyveromyces lactis from dairy products.

Author(s) : VALDERRAMA M. J., ISABEL DE SILONIZ M., GONZALO P., PEINADO J. M.

Type of article: Article

Summary

The discriminative potential of this medium is based on the detection of the enzyme beta-galactosidase, in the absence of lactose. Of the more than 95 strains tested, including yeasts, bacteria, and filamentous fungus, only the strains of K. marxianus and K. lactis produced blue colonies on the medium due to the presence of X-Gal/IPTG. The bacterial strains were not able to grow in Kluyveromyces differential medium. On this basis, the medium was very satisfactory when testing naturally or experimentally contaminated dairy food products.

Details

  • Original title: A differential medium for the isolation of Kluyveromyces marxianus and Kluyveromyces lactis from dairy products.
  • Record ID : 1999-3725
  • Languages: English
  • Source: Journal of Food Protection - vol. 62 - n. 2
  • Publication date: 1999/02
  • Document available for consultation in the library of the IIR headquarters only.

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