Using Microbial Responses Viewer and a Regression Approach to Assess the Effect of pH, Activity of Water and Temperature on the Survival of Campylobacter spp
This study aimed at developing a model for evaluating the survival of various strains under different conditions in culture media and poultry data from ComBase. data of culture media (116) and poultry (19) were collected from Microbial Responses Viewer, an additional tool of ComBase. The Weibull equ...
Gespeichert in:
Veröffentlicht in: | Foods 2022-02, Vol.11 (5), p.637 |
---|---|
Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | This study aimed at developing a model for evaluating the survival of various
strains under different conditions in culture media and poultry data from ComBase.
data of culture media (116) and poultry (19) were collected from Microbial Responses Viewer, an additional tool of ComBase. The Weibull equation was selected as a suitable model for the analysis of survival data because of the nonlinearity of survival curves. Then, the fitting parameters (first reduction time and shape parameter) were analysed through a Kruskall-Wallis test and box-whisker plots, thus pointing out the existence of two classes of temperature (0-12 °C and 15-25 °C) and pH (4-6.5 and 7-7.5) acting on the viability of
. Finally, a general regression model was used to build a comprehensive function; all factors were significant, but temperature was the most significant variable, followed by pH and water activity. In addition, desirability and prediction profiles highlighted a negative correlation of the first reduction time with temperature and a positive correlation with pH and water activity. |
---|---|
ISSN: | 2304-8158 2304-8158 |
DOI: | 10.3390/foods11050637 |