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Comparaison de l'activité de la régulation biologique de Kluyveromyces lactis utilisé avec d'autres souches de levure contre le Penicillium expansum.

Comparison of biocontrol activity of Kluyveromyces lactis with other yeast strains against Penicillium expansum.

Auteurs : TACZMAN-BRÜCKNER A., MOHÁCSI-FARKAS C., BALLA C., et al.

Type d'article : Article

Résumé

Applying antagonistic yeasts is one of the recent possibilities for controlling postharvest disease caused by blue mould (Penicillium expansum). In this work, antagonistic activity of several Kl. lactis strains was tested against two strains of P. expansum. Three strains of Kl. lactis were compared with three biocontrol yeasts: Metschnikowia pulcherrima, Sporobolomyces roseus and Pichia anomala. The investigations were carried out at 25, 15 and 5 °C, applying different yeast cell densities and culture media. Statistical analysis showed no significant differences among the three Kl. lactis strains. The inhibitory effect of the tested yeasts was different according to the applied mould strain temperature, culture medium and cell density. Application of antagonistic yeasts combined with reduced temperature enhanced the inhibitory effect. Direct relationship was observed between increasing cell density and the biocontrol efficiency of Kl. lactis. According to this work, Kl. lactis is a possible biocontrol agent.

Détails

  • Titre original : Comparison of biocontrol activity of Kluyveromyces lactis with other yeast strains against Penicillium expansum.
  • Identifiant de la fiche : 2006-0829
  • Langues : Anglais
  • Source : Acta Aliment. - vol. 34 - n. 1
  • Date d'édition : 03/2005

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