Abstract
Cold Plasma (CP) is an innovative non-thermal technique that maintains the quality of foods. The kinetics of natural microbiota viz. aerobic mesophiles (AM) and yeasts & molds (YM) were examined within the domain of 18-30 kV, 2-10 mm juice depth, and 0-4 min treatment time. A log reduction of 3.08 and 2.32 was achieved for AM and YM, respectively, at 30 kV/2 mm/4 min. The inactivation kinetics for AM and YM were established using different kinetic models, namely Weibull + tail, Geeraerd, log-logistic, biphasic, and Coroller models. First, the suitability of model was determined according to goodness of fit (Coefficient of determination (R(2)) and root mean square error (RMSE)) and validation indices (accuracy factor (A(f)) and bias factor (B(f))). The R(2), RMSE, A(f), and B(f) values for the Weibull + tail, log-logistic, and Coroller models ranged between 0.939 and 0.999, 0.001-0.154, 1.001-1.086, and 0.992-1.024, respectively which were reported to be satisfactory in explaining the inactivation kinetics for AM and YM, respectively. Further, the most appropriate model was selected based on Akaike's theory. The log-logistic model was the best fitting for AM and YM inactivation, showing the least akaike weight in 47.33 and 48.82% of the inactivation curves, respectively. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s13197-024-06091-0.