Study and optimization of freeze-drying cycles of a model probiotic strain

Pierre Verlhac; Séverine Vessot-Crastes; Ghania Degobert; Claudia Cogné; Julien Andrieu; Laurent Beney; Patrick Gervais

Communication dans un congrès

Study and optimization of freeze-drying cycles of a model probiotic strain

Pierre Verlhac ^{1, *} Séverine Vessot-Crastes ¹ Ghania Degobert ¹ Claudia Cogné ¹ Julien Andrieu ¹ Laurent Beney ² Patrick Gervais ²

* Auteur correspondant

1 LAGEPP - Laboratoire d'automatique, de génie des procédés et de génie pharmaceutique

2 PAM - Procédés Alimentaires et Microbiologiques [Dijon]

Abstract : This work is based on the experimental study of the freeze-drying process to understand the impact of numerous factors on the survival rates of a model probiotic strain of Lactobacillus casei type. With the aim to find out if cell density in the matrix and survival rates are linked, we have studied the location of the cells after freeze drying inside a porous matrix composed of a lactose basis with a polymer, the polyvinylpyrrolidone (PVP) in various amounts. The best survival rate were obtained at slow freezing rate for a formulation containing 5% (m/V) oflactose and 5% (m/V) of PVP.

Keywords : Freeze-Drying Freezing Probiotics L. Casei ATCC 393

Type de document :

Communication dans un congrès

Domaine :

Sciences du Vivant [q-bio] / Ingénierie des aliments

Liste complète des métadonnées

https://hal-univ-bourgogne.archives-ouvertes.fr/hal-02055897
Contributeur : Pam - Université de Bourgogne Connectez-vous pour contacter le contributeur
Soumis le : lundi 4 mars 2019 - 12:31:32
Dernière modification le : mercredi 20 novembre 2019 - 03:17:18

Study and optimization of freeze-drying cycles of a model probiotic strain

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