Comparative analyses of prediction models for inactivation of Escherichia coli in carrot juice by means of pulsed electric fields

Singh, Jaswant and Singh, Manjeet and Singh, Baljit and Nayak, M.K. and Ghanshyam, C. (2017) Comparative analyses of prediction models for inactivation of Escherichia coli in carrot juice by means of pulsed electric fields. Journal of Food Science and Technology, 54 (6). pp. 1538-1544. ISSN 0022-1155

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Official URL: https://link.springer.com/article/10.1007/s13197-0...

Abstract

This paper reports the prediction capacity of various microbial inactivation models to prefigure the bactericidal effect using pulsed electric field (PEF) on liquid food. The aim of study was to compare the various inactivation models based on accuracy and bias factor to find out the most accurate inactivation model for Escherichia coli present in carrot juice treated with PEF. In this study, E. coli suspended in carrot juice was treated with varying pulsed electric field strength for different intervals. The obtained data were utilized for the evaluation of parameters of Bigelow, Peleg, Hülsheger and Weibull inactivation models. Furthermore, secondary models were developed for Hülsheger and Weibull to predict the microbial inactivation at any level of field strength and treatment time. The secondary model for Hülsheger exhibits 5.8% error as compared to the Weibull model having 8.5% error in prediction of death kinetics of E. coli suspended in carrot juice by means of PEF. The comparative analysis of secondary models to forecast the unknown data set unveiled the superior functioning of Hülsheger model.

Item Type: Article
Uncontrolled Keywords: Microbial inactivation models; Bias factor; Accuracy factor; Field strength; Treatment time
Subjects: CSIO > Agri - Instrumentation
Divisions: Agri - Instrumentation
Depositing User: Ms. Jyotsana
Date Deposited: 23 Jan 2019 16:36
Last Modified: 23 Jan 2019 16:36
URI: http://csioir.csio.res.in/id/eprint/746

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