title: Pategrás cheese as a suitable carrier for six probiotic cultures.
abstract: The viability of five single-strain and one three-strain probiotic cultures was assessed during Pategrás cheese ripening. Probiotics were inoculated into cheese-milk after a pre-incubation step - intended to improve their survival - or directly as a lyophilised culture; control cheeses without probiotics were also obtained. pH of probiotic and control cheeses was similar, except in probiotic cheeses containing the strain Lb. acidophilus B or the mixed culture. In these cases, the probiotic cheeses were more acid than their respective control cheeses. All the probiotics tested maintained counts above 107 cfu/g during the shelf-life settled for the product. Strains of the Lb. casei group: Lb. paracasei, Lb. casei and Lb. rhamnosus reached and kept the highest cell concentration during cheese ripening, followed by Lb. acidophilus and bifidobacteria. The direct addition of the probiotic cultures was more efficient than their inoculation after a pre-incubation step, for all the probiotics assayed. We have provided evidence that support the use of Pategrás cheese as a performing food-based vehicle for probiotic bacteria.
authors.affiliation: Instituto de Lactología Industrial, Universidad Nacional del Litoral - Consejo Nacional de Investigaciones Científicas y Técnicas. 1 degrees de mayo 3250, S3000AOM Santa Fe, Argentina. cvberg@fiq.unl.edu.ar
authors.forename: Carina
authors.initials: C
authors.lastname: Bergamini
authors.forename: Erica
authors.initials: E
authors.lastname: Hynes
authors.forename: Carlos
authors.initials: C
authors.lastname: Meinardi
authors.forename: Viviana
authors.initials: V
authors.lastname: Suárez
authors.forename: Andrea
authors.initials: A
authors.lastname: Quiberoni
authors.forename: Carlos
authors.initials: C
authors.lastname: Zalazar
mesh_terms: D002611:Cheese / Q000382:microbiology*; D015169:Colony Count, Microbial; D003470:Culture Media; D005516:Food Microbiology; D006863:Hydrogen-Ion Concentration; D007779:Lactobacillus acidophilus / Q000378:metabolism; D007780:Lacticaseibacillus casei; D019936:Probiotics; D048249:Streptococcus thermophilus / Q000378:metabolism
chemical_list: D003470:Culture Media