Evaluation of probiotic potential of lactic acid bacteria isolated from traditional Malaysian fermented Bambangan (Mangifera pajang)Evaluación del potencial probiótico de bacterias acido-lácticas aisladas del tradicional Bambangan malasio fermentado (Mangifera pajang) This study aims to evaluate the probiotic and technological properties of lactic acid bacteria (LAB) isolated from an indigenous fermentation of Bambangan (Mangifera pajang). The LAB were evaluated for their tolerance to low pH, bile salt, antimicrobial potential, auto-aggregation ability, microbial adhesion to solvents, tolerance to high temperature and osmotic pressure. Approximately 36% of the isolated LAB strains displayed excellent survival at pH 3.0 with at least 4 log CFU/ml after 24 hours at 2.0% bile salt. A high aggregation activity (>20%) was found in most of the LAB strains. Five Lactobacillus plantarum strains showed at least 70% viability at 60°C for 10 minutes while one L. brevis and three L. plantarum strains were tolerant to 6% sodium chloride. Furthermore, the maximum β-galactosidase activity was found in four L. plantarum strains. In conclusion, these LAB strains could serve as promising probiotic candidates for the preparation of functional food products.Keywords: auto-aggregation; acid tolerance; Mangifera pajang; probiotic potential El objetivo de este estudio es evaluar las propiedades probióticas y tecnológicas de las bacterias ácido-lácticas (BAL) aisladas de una fermentación indígena de Bambangan (Mangifera pajang). Las BAL fueron evaluadas por su bajo nivel de pH, sales biliares, potencial antimicrobiano, habilidad de auto-agregación, adhesión microbiana a los solventes, tolerancia a las altas temperaturas y presión osmótica. Un valor aproximado de 36% de las cepas de BAL aisladas mostraron una excelente supervivencia a pH 3,0 con al menos 4 log CFU/ml después de 24 horas a 2,0% de sales biliares. Se encontró un alto nivel de actividad de agregación (>20%) en la mayoría de las cepas de BAL. Cinco cepas de Lactobacillus plantarum mostraron al menos un 70% de viabilidad a 60°C durante 10 minutos mientras que una cepa de L. brevis y tres de L. plantarum resultaron tolerantes en un 6% al cloruro de sodio. Además, la máxima actividad de β-galactosidasa se encontró en cuatro cepas de L. plantarum. En conclusión, estas cepas de BAL podrían servir como prometedoras candidatas probióticas para la preparación de productos alimentarios funcionales.
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