SELECTION OF POTENTIALLY PROBIOTIC LACTOBACILLUS BASED ON PATHOGENS INHIBITION CAPACITY AND ADHESION IN MUCOSA
lactobacillus, probiotics, adhesion, mucous, microbiota, ht-29
Manystudieshaveshowntheimportanceofunderstandingthecomplexityofthe intestinal microbiota andtherelationtohumanhealth. The homeostasisofthe microbiota maydependonnumerousfactorssuch as regular intakeoffoodsenrichedwithprobiotics. Moreover, imbalancecan lead totheconditioncalleddysbiosis, a major publichealthconcern. Probiotics are microorganismsthat, wheningested in adequateamounts, conferbenefitstothe host health. In order for bacteriatobeconsideredprobiotic, they must meetcertainrequirementssuch as intestinal mucosaladhesioncapacityandinhibitionofpathogens. Lactobacillus are partofthegroupoflacticacidbacteria (LAB)withimportanttechnologicalandhealthproperties. The objectiveofthestudyistoevaluatetheadhesionpropertiesofLactobacillusisolatedfromhuman, withrespecttotheadhesion, colonizationandinhibitioncapacityofpotentialpathogens. The followingstrainsofLactobacilluswillbeused: 4 strainsof L. paracasei, 3 strainsof L. rhamnosusand 2 strainsof L. fermentum. Pathogeninhibitionwillbeevaluatedbyreducingtheproductionofbiofilmsandin vitro inhibitionofpathogens, theidentificationoftheassociatedLactobacillus genes in theadhesionin mucosa andtheadhesioncapacityofLactobacillus spp. in lineofmucus-producingcells (HT-29). Finally, thehydrophobicitytestofthecellsurfaceofLactobacilluswillbeperformed as oneoftheparameterstoevaluatetheadhesioncharacteristicofthesemicroorganisms in intestinal mucosa.Withthedevelopmentofthiswork, it isexpectedtoselectstrainsofisolated lactobacilli fromhumanthat shows a betterprobiotic profile basedonthecapacityofadhesion in mucosa.