title: Modeling the isothermal inactivation curves of Listeria innocua CECT 910 in a vegetable beverage under low-temperature treatments and different pH levels.
abstract: Thermal inactivation kinetics of Listeria innocua CECT 910 inoculated in a vegetable beverage at three pH conditions (4.25, 4.75, and 5.20), four levels of temperature (50, 55, 60, 65℃), and different treatment times (0-75 min) were obtained. Survival curves did not follow a log-linear relationship and consequently were fitted to various mathematical models: Weibull, Geeraerd, Cerf with shoulder, and the modified Gompertz equation. Results indicated that the best model for the treatment conditions was the modified Gompertz equation, which provides the best goodness-of-fit and the lowest Akaike information criterion value. Sensitivity analysis indicated that the most influential factors affecting the final microbial load were temperature and time in the case of the higher temperature level (65℃) and time in the case of the lower temperature level (50℃).
authors: Instituto de Agroquímica y Tecnología de Alimentos, CSIC, Valencia, Spain.
authors: Sandra
authors: S
authors: Vega
authors: Instituto de Agroquímica y Tecnología de Alimentos, CSIC, Valencia, Spain.
authors: Daniela
authors: D
authors: Saucedo
authors: Instituto de Agroquímica y Tecnología de Alimentos, CSIC, Valencia, Spain lolesra@iata.csic.es.
authors: Dolores
authors: D
authors: Rodrigo
authors: Instituto de Agroquímica y Tecnología de Alimentos, CSIC, Valencia, Spain.
authors: Consuelo
authors: C
authors: Pina
authors: Departament d'Estadística i I.O., Universitat de València, Valencia, Spain.
authors: Carmen
authors: C
authors: Armero
authors: Instituto de Agroquímica y Tecnología de Alimentos, CSIC, Valencia, Spain.
authors: Antonio
authors: A
authors: Martínez
mesh_terms: D001628:Beverages / Q000382:microbiology*; D003080:Cold Temperature; D015169:Colony Count, Microbial; D005516:Food Microbiology / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D008087:Listeria / Q000254:growth & development*; D008954:Models, Biological; D014675:Vegetables / Q000382:microbiology*
keywords: Inactivation kinetic; Listeria innocua; mathematical modeling; thermal treatment; vegetable beverage