Estudio de la comunidad microbiana del kéfir y aislamiento de microorganismos con actividad antimicrobiana
Fecha
2017-10-31
Autores
Título de la revista
ISSN de la revista
Título del volumen
Editor
Jaén: Universidad de Jaén
Resumen
[ES]En la actualidad, un gran tema de interés es el de los alimentos que son capaces de prevenir enfermedades con su consumo. Un ejemplo típico, es el de los probióticos ya que éstos son microorganismos capaces de producir sustancias inhibitorias frente a patógenos cotidianos. Más concretamente, en este ensayo se procederá al estudio de un tipo específico de probiótico, el kéfir, en tres de sus variedades tradicionales, el kéfir de leche, agua y té.
Nuestro objetivo a seguir, es el estudio de la comunidad microbiana de dichos tipos de kéfir para así poder encontrar microorganismos de interés con actividad antimicrobiana. Para estudiar dicha acción inhibitoria frente a patógenos, se expusieron dichas muestras frente a bacterias concretas. Pudiéndose comprobar, que el kéfir de leche tenía una clara producción de sustancias bactericidas frente a algunas de las bacterias indicadoras, mientras que el kéfir de agua y de té no presentaron dicha actividad.
[EN]Nowadays, a great tapie of interest is that of foods that also provides the basic nutrients for human life, are able to prevent diseases with their consumption. A typical and well-known example of this type of food is that of probiotics since these are microorganisms capable of producing inhibitory substances against daily pathogens. In this work, we will analyze a specific type of probiotic, the kefir, in its three traditional varieties, milk, water and tea kefir. Our main objective is to study the microbial community of these types of kefir in order to find microorganisms with antimicrobial activity. To study such inhibitory activity against pathogens, we exposed these bacteria! strains against other specific bacteria. We verified that milk kefir had a clear production of antibacterial substances against sorne of the indicator bacteria. Nevertheless, water and tea kefir had no such activity.
[EN]Nowadays, a great tapie of interest is that of foods that also provides the basic nutrients for human life, are able to prevent diseases with their consumption. A typical and well-known example of this type of food is that of probiotics since these are microorganisms capable of producing inhibitory substances against daily pathogens. In this work, we will analyze a specific type of probiotic, the kefir, in its three traditional varieties, milk, water and tea kefir. Our main objective is to study the microbial community of these types of kefir in order to find microorganisms with antimicrobial activity. To study such inhibitory activity against pathogens, we exposed these bacteria! strains against other specific bacteria. We verified that milk kefir had a clear production of antibacterial substances against sorne of the indicator bacteria. Nevertheless, water and tea kefir had no such activity.