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

• P. Verlhac ^[1] ; S. Vessot-Crastes ^[1] ; G. Degobert ^[1] ; C. Cogne ^[1] ; J. Andrieu ^[1] ; L. Beney ^[2] ; P. Gervais ^[2]
  1. [1] University of Lyon System

     University of Lyon System

     Arrondissement de Lyon, Francia

     
  2. [2] Univ. Bourgogne Franche-Compté
• Localización: IDS2018. 21st International Drying Symposium. Proceedings / Gabriela Clemente Polo (aut.), Juan Andrés Carcel Carrión (aut.), Antoni Mulet Pons (aut.), 2018, ISBN 978-84-9048-688-7, pág. 635
• Idioma: inglés
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  • 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) of lactose and 5% (m/V) of PVP.