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Información tecnológica

On-line version ISSN 0718-0764

Abstract

CAYRA, Efrain; DAVILA, Jor H; VILLALTA, Jenny M  and  ROSALES, Yovani. Evaluation of the Stability and Viability of Two Probiotic Strains Microencapsulated by Fluidized Bed. Inf. tecnol. [online]. 2017, vol.28, n.6, pp.35-44. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642017000600005.

Two probiotic strains (Bacillus sp. 2. and Saccharomyces sp. 4) were microencapsulated using the fluidized bed spraying technique (FBD), using three formulations, F1: skim milk (33%), F2: milk (23%) + maltodextrin (1Q%) and F3: maltodextrin (33%), evaluating in each of them the percentage of viability after FBD and the survival rate during storage (9Q days), by counting CFU in plaque. The percentage of viability indicated that F1 obtained the best results for Bacillus sp. 2 (97.49%) and Saccharomyces sp. 4 (97.85%), followed by F2 in both strains. In storage, F1 and F3 significantly decreased their viability, while F2 maintained constant viability, results that were corroborated by scanning electron microscopy. These results demonstrated that FBD is efficient for microencapsulation, skim milk improves protection in this process and adding maltodextrin generates greater stability during long-term storage.

Keywords : fluidized bed; probiotics; microencapsulation; storage.

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