Modeling the inactivation of Salmonella typhimurium by dense phase carbon dioxide in carrot juice

Inactivation kinetics of Salmonella spp. under thermal and emerging treatments: A review

“…residual population. For example, when dense phase carbon dioxide (DPCD) was used to process carrot juice inoculated with Salmonella sigmoidal survival curves were observed under several conditions (Liao et al, 2010). Similar results have been obtained when other food-borne pathogenic bacteria were inactivated with supercritical carbon dioxide.…”

“…However, a scrutiny of the available survival data on Salmonella spp. exposed to emerging thermal and nonthermal treatments demonstrates that departure from non-linearity is highly prevalent as many references show (Álvarez, Mañas, Virto, & Condón, 2006;Erkmen, 2009;Liao, Kong, Zhang, Liao, & Hu, 2010;Monfort, Gayán, Raso, Condón, & Álvarez, 2010;Monfort, Gayán, Saldaña, et al, 2010;Niemira & Sites, 2008;Saldaña et al, 2010;Sampedro, Rodrigo, & Martínez, 2011;Wong, Linton, & Gerrard, 1998). Besides survival curves with upward or downward concavities, extreme tailing and sigmoidal behaviors have been often observed.…”

“…This applies to any Wong et al (1998) combination of pertinent factors (i.e., pulsed electric fields and temperature, ultrasound plus temperature and pressure). As mentioned above, exponential, log-logistic and other empirical models have been predominantly utilized and reported in the literature to account for the dependence of the model's parameters with the most relevant lethal factors applied during each process (Doona et al, 2007;Erkmen, 2009;Liao et al, 2010;Monfort, Gayán, Saldaña, et al, 2010). However additional observations in most cases are required to develop comprehensive secondary models that can accurately describe the effect of combined factors.…”

Recent Advances in the Application of Non Thermal Methods for the Prevention of Salmonella in Foods

“…In addition, shrinking and uneven dispersion of cytoplasmic materials was also observed (Figure 1). Liao et al (2010) obtained a remarkable reduction of 5 logs for S. Typhimurium when carrot juice was subjected to DPCD treatment. Both temperature and pressure had a noticeable effect as the inactivation was enhanced with increasing pressure at a constant temperature or increasing temperature at a constant pressure.…”

Predictive modelling of Salmonella: From cell cycle measurements to e-models

“…These conditions require modelling by a stochastic process for the primary model (Krieter, 2004;Latimer, Jaykus, Morales, Cowen, & Crawford-Brown, 2002;Whiting et al, 2000) and describing the effect of the environment on the probability of growth for the secondary model (Koutsoumanis, Kendall, & Sofos, 2004;Lanciotti, Sinigaglia, Gardini, Vannini, & Guerzoni, 2001). Non-thermal inactivation models are also being developed as new technologies emerge (Alvarez, Manas, Sala, & Condon, 2003;Erkmen, 2009b;Kim, Rhee, Kim, Lee, & Kim, 2007;Liao, Kong, Zhang, Liao, & Hu, 2010).…”