Combined effects of spray‐drying conditions and postdrying storage time and temperature on Salmonella choleraesuis and Salmonella typhimurium survival when inoculated in liquid porcine plasma
Visualitza/Obre
Autor/a
Blázquez, E.
Rodríguez, C.
Ródenas, J.
Saborido, N.
Solà‐Ginés, M.
Pérez de Rozas, A.
Campbell, J. M.
Segalés, J.
Pujols, J.
Polo, J.
Data de publicació
2018-06-11ISSN
0266-8254
Resum
The objective of this study was to determine the effectiveness of the spray-drying process on the inactivation of Salmonella choleraesuis and Salmonella typhimurium spiked in liquid porcine plasma and to test the additive effect of immediate postdrying storage. Commercial spray-dried porcine plasma was sterilized by irradiation and then reconstituted (1:9) with sterile water. Aliquots of reconstituted plasma were inoculated with either S. choleraesuis or S. typhimurium, subjected to spray-drying at an inlet temperature of 200°C and an outlet temperature of either 71 or 80°C, and each spray-drying temperature combinations were subjected to either 0, 30 or 60 s of residence time (RT) as a simulation of residence time typical of commercial dryers. Spray-dried samples were stored at either 4·0 ± 3·0°C or 23·0 ± 0·3°C for 15 days. Bacterial counts of each Salmonella spp., were completed for all samples. For both Salmonella spp., spray-drying at both outlet temperatures reduced bacterial counts about 3 logs at RT 0 s, while there was about a 5·5 log reduction at RT 60 s. Storage of all dried samples at either 4·0 ± 3·0°C or 23·0 ± 0·3°C for 15 days eliminate all detectable bacterial counts of both Salmonella spp.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
619 - Veterinària
Pàgines
7
Publicat per
Wiley
Publicat a
Letters in Applied Microbiology
Citació
Blázquez, E., C. Rodríguez, J. Ródenas, N. Saborido, M. Solà-Ginés, A. Pérez de Rozas, J. M. Campbell, J. Segalés, J. Pujols, and J. Polo. 2018. "Combined Effects Of Spray-Drying Conditions And Postdrying Storage Time And Temperature On Salmonella Choleraesuis And Salmonella Typhimurium Survival When Inoculated In Liquid Porcine Plasma". Letters In Applied Microbiology 67 (2): 205-211. Wiley. doi:10.1111/lam.13017.
Programa
Sanitat Animal
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