Producción Científica Profesorado

Lactobacillus pentosus ABHEAU-05: An in vitro digestion resistant lactic acid bacterium isolated from a traditional fermented Mexican beverage



Contreras López, Elizabeth

2020

Meyli Claudia Escobar-Ramírez, JudithJaimez-Ordaz, Valeria Abril Escorza-Iglesias, Gabriela Mariana Rodríguez-Serrano, Elizabeth Contreras-López, Juan Ramírez-Godínez, Araceli Castañeda-Ovando, Aurea Itzel Morales-Estrada, Nancy Felix-Reyes, Luis GuillermoGonzález-Olivares*. Lactobacillus pentosus ABHEAU-05: An in vitro digestion resistant lactic acid bacterium isolated from a traditional fermented Mexican beverage. Revista Argentina de Microbiología. 2020. DOI:10.1016/j.ram.2019.10.005


Abstract


The health benefits attributed to probiotics generate interest in the search of competent strains adapted to several ecological niches, especially those related to traditional beverages and foods of each country. Pineapple tepache, a traditional Mexican fermented beverage, was used for the isolation of lactic acid bacteria with probiotic potential, one of which withstood the in vitro tests. The isolated strain AB-05, which exhibited the tested probiotic functional properties, was designated as Lactobacillus pentosus ABHEAU-05. The sequence was registered in GenBank under access code MK587617. This study is the first report of a lactic acid bacterium with in vitro digestion resistance isolated from pineapple tepache. The survival of L. pentosus ABHEAU-05 in a symbiotic medium was proven using fermented milk enriched with inulin. The in vitro digestion-resistant probiotic activity of lactobacilli was measured through analysis of pH and proteolysis. Results showed that L. pentosus grew properly in fermented milk; therefore, this microorganism could be used in the manufacture of this kind of products. The concentration of L. pentosus reached up to 8.5 log CFU/ml after 40 h of fermentation. In addition, the production of peptides and the decrease in pH indicated the vigorous and active metabolic state of the lactic acid bacterium tested. The activity and the concentration of this microorganism were maintained during refrigeration. The results of this research conclude that L. plantarum ABHEAU-05 is an in vitro digestion-resistant microorganism that can be used as a starter culture for the production of functional foods of dairy origin.Resumen



Producto de Investigación




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