Influence of fruit matrix and storage temperature on the survival of Listeria monocytogenes in a gastrointestinal simulation
Fecha de publicación2017
Colás Medà, Pilar
MetadatosMostrar el registro completo del ítem
This study aimed to assess the effect of storage temperature and fruit matrix on the survival of L. monocytogenes after a gastrointestinal simulation. The growth of L. monocytogenes on different matrices (fresh-cut pear and melon and synthetic growth medium as a control) and storage temperature (1,
5, 10 and 20 C) was evaluated. Subsequently, the ability of the pathogen on different fruit matrices to overcome the gastrointestinal simulation was evaluated. The highest reduction in the population of L. monocytogenes on fresh-cut pear and melon subjected to the gastrointestinal simulation was after 6 days of storage at 5 C (0.84 and 2.12 log reduction on the pear and melon, respectively). Conversely, higher survival ratios of L. monocytogenes in both matrices were observed at 1 C, even with logarithmic increases after the whole gastrointestinal simulation during the experiment. At 20 C, the survival capacity of L. monocytogenes was higher than that under storage at 5 and 10 C when grown on fresh-cut pear, whereas this was not observed on fresh-cut melon. In general, under the proper storage temperature of fresh-cut fruit (5 C) and after 1 day of storage, the L. monocytogenes on the melon was more sensitive than that on the pear, and this behaviour was maintained for up to 9 days. The ability of L. monocytogenes to overcome the gastrointestinal tract was not enhanced when the pathogen grew on fresh-cut pear and melon under the proper storage temperature.
Es parte deFood Control, 2017, vol. 73, p. 1045-1052
Showing items related by title, author, creator and subject.
Exposure to minimally processed pear and melon during shelf life could modify the pathogenic potential of Listeria monocytogenes Colás Medà, Pilar; Viñas Almenar, Inmaculada; Sousa Oliveira, Márcia Patrícia de; Anguera, Marina; Serrano Casasola, José Carlos Enrique; Abadias i Sero, Mª Isabel (Elsevier, 2017)Survival and virulence of foodborne pathogens can be influenced by environmental factors such as the intrinsic properties of food as well as the extrinsic properties that contribute to food shelf life (e.g., temperature ...
Effectiveness of a bacteriophage in reducing Listeria monocytogenes on fresh-cut fruits and fruit juices. Sousa Oliveira, Márcia Patrícia de; Viñas Almenar, Inmaculada; Colás Medà, Pilar; Anguera, Marina; Usall i Rodié, Josep; Abadias i Sero, Mª Isabel (Elsevier Ltd., 2014)Listeria monocytogenes is a serious foodborne pathogen and new strategies to control it in food are needed. Among them, bacteriophages hold attributes that appear to be attractive. The objective of this study was to ...
Sousa Oliveira, Márcia Patrícia de; Abadias i Sero, Mª Isabel; Colás Medà, Pilar; Usall i Rodié, Josep; Viñas Almenar, Inmaculada (Elsevier B.V., 2015)Fruits and vegetables can become contaminated by foodborne pathogens such as Escherichia coli O157:H7, Salmonella and Listeria monocytogenes, and it has been demonstrated that current industrial sanitizing treatments do ...