INLAIN   20354
INSTITUTO DE LACTOLOGIA INDUSTRIAL
Unidad Ejecutora - UE
artículos
Título:
New perspective to improve Lactobacillus paracasei functionality in cheese
Autor/es:
PATRIGNANI, F.; TABANELLI, G.; BURNS, P.; VINDEROLA, G.; REINHEIMER, J.; GARDINI, F.; LANCIOTTI, R.
Revista:
Journal of Food Processing & Technology
Editorial:
Omics Group Conferences
Referencias:
Año: 2012 vol. 3 p. 48 - 48
ISSN:
2157-7110
Resumen:
A growing interest has raised toward technologies able to enhance the potential of probiotic strains. High pressure
homogenization (HPH) represents one of the most studied opportunities for the dairy field. Aim of this research
was to consider the potential of HPH, performed at 50 MPa, on the probiotic Lactobacillus paracaseiA13
performances, co-inoculated with the traditional starters, for the production of Caciotta cheese. Three types of
Caciotta were manufactured: type 1 (control, with the traditional starters), type 2 (Caciotta with not-HPH treated
Lactobacillus paracaseiA13), type 3 (Caciotta with HPH-treated Lactobacillus paracasei A13). The three types
were stored at 4°C. Viability of starters and Lb. paracaseiA13 as well as cheese proteolytic and lipolytic patterns
were monitored after cheesemaking and 1, 2, 3, 4, 5 weeks. Physicochemical and organoleptic analyses, at the
same time of storage, were carried out. Moreover, the Lactobacillus paracaseiA13 gastric acid resistance was
monitored over ripening both in cheese 2 and 3. Also the modulation of mice immune system was evaluated after
feeding with cheese added of HPH and not-HPH treated strain.
The probiotic maintained high viability (9.2 and 9.1 log cfu/g) up to the 14th day of storage in both the Caciotta
types. The electrophoretic analyses underlined a faster proteolysis in Caciotta cheese containing HPH-treated
strain with respect to cheese types 1 and 2. Regarding the functional properties, the HPH treatment at 50 MPa
increased Lb. paracasei gastric resistance in Caciotta, maintaining high strain viability in the product, and
contributed to the positive modulation of the mice immune system.