Inactivation kinetics of some microorganisms in apple, melon, orange and strawberry juices by high intensity light pulses

The suitability of some models was analyzed to characterize the Pulsed Light (PL) inactivation kinetics for Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 in commercial juices and fresh squeezed juices. A negative relationship...

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Detalles Bibliográficos
Publicado: 2013
Materias:
Biphasic model
Coroller model
Fruit juices
Microorganism inactivation
Pulsed light
Weibull model
Biphasic models
High intensity light pulse
Inactivation kinetics
Multivariate approach
Salmonella enteritidis
Spatial relationships
Weibull models
Escherichia coli
Fruits
Light
Principal component analysis
Salmonella
Yeast
Parameter estimation
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02608774_v118_n3_p302_Ferrario
http://hdl.handle.net/20.500.12110/paper_02608774_v118_n3_p302_Ferrario
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_02608774_v118_n3_p302_Ferrario
record_format dspace
spelling paper:paper_02608774_v118_n3_p302_Ferrario2023-06-08T15:22:17Z Inactivation kinetics of some microorganisms in apple, melon, orange and strawberry juices by high intensity light pulses Biphasic model Coroller model Fruit juices Microorganism inactivation Pulsed light Weibull model Biphasic models High intensity light pulse Inactivation kinetics Multivariate approach Pulsed light Salmonella enteritidis Spatial relationships Weibull models Escherichia coli Fruit juices Fruits Light Principal component analysis Salmonella Yeast Parameter estimation The suitability of some models was analyzed to characterize the Pulsed Light (PL) inactivation kinetics for Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 in commercial juices and fresh squeezed juices. A negative relationship was found between the absorbance of juices and PL effectiveness. PL treatment (2.4-71.6 J/cm2) was ineffective in natural strawberry and orange juices. In general, inactivation curves exhibited a marked upward concavity, reaching after 60 s-PL treatment to 0.3-6.9 log-reduction cycles. Nonlinear semilogarithmic survival curves were fitted by conceptually different models: the Weibull model, the biphasic model and a modified version of the Coroller model. Biphasic and Weibull models compared to the modified Coroller model allowed a better fit and more accurate estimation of parameters. A multivariate approach to data analysis by principal components (PCA) showed relevant spatial relationships among estimated model parameters, revealing PL treatment efficacy in the different juices. © 2013 Elsevier Ltd. All rights reserved. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02608774_v118_n3_p302_Ferrario http://hdl.handle.net/20.500.12110/paper_02608774_v118_n3_p302_Ferrario
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Biphasic model
Coroller model
Fruit juices
Microorganism inactivation
Pulsed light
Weibull model
Biphasic models
High intensity light pulse
Inactivation kinetics
Multivariate approach
Pulsed light
Salmonella enteritidis
Spatial relationships
Weibull models
Escherichia coli
Fruit juices
Fruits
Light
Principal component analysis
Salmonella
Yeast
Parameter estimation
spellingShingle Biphasic model
Coroller model
Fruit juices
Microorganism inactivation
Pulsed light
Weibull model
Biphasic models
High intensity light pulse
Inactivation kinetics
Multivariate approach
Pulsed light
Salmonella enteritidis
Spatial relationships
Weibull models
Escherichia coli
Fruit juices
Fruits
Light
Principal component analysis
Salmonella
Yeast
Parameter estimation
Inactivation kinetics of some microorganisms in apple, melon, orange and strawberry juices by high intensity light pulses
topic_facet Biphasic model
Coroller model
Fruit juices
Microorganism inactivation
Pulsed light
Weibull model
Biphasic models
High intensity light pulse
Inactivation kinetics
Multivariate approach
Pulsed light
Salmonella enteritidis
Spatial relationships
Weibull models
Escherichia coli
Fruit juices
Fruits
Light
Principal component analysis
Salmonella
Yeast
Parameter estimation
description The suitability of some models was analyzed to characterize the Pulsed Light (PL) inactivation kinetics for Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 in commercial juices and fresh squeezed juices. A negative relationship was found between the absorbance of juices and PL effectiveness. PL treatment (2.4-71.6 J/cm2) was ineffective in natural strawberry and orange juices. In general, inactivation curves exhibited a marked upward concavity, reaching after 60 s-PL treatment to 0.3-6.9 log-reduction cycles. Nonlinear semilogarithmic survival curves were fitted by conceptually different models: the Weibull model, the biphasic model and a modified version of the Coroller model. Biphasic and Weibull models compared to the modified Coroller model allowed a better fit and more accurate estimation of parameters. A multivariate approach to data analysis by principal components (PCA) showed relevant spatial relationships among estimated model parameters, revealing PL treatment efficacy in the different juices. © 2013 Elsevier Ltd. All rights reserved.
title Inactivation kinetics of some microorganisms in apple, melon, orange and strawberry juices by high intensity light pulses
title_short Inactivation kinetics of some microorganisms in apple, melon, orange and strawberry juices by high intensity light pulses
title_full Inactivation kinetics of some microorganisms in apple, melon, orange and strawberry juices by high intensity light pulses
title_fullStr Inactivation kinetics of some microorganisms in apple, melon, orange and strawberry juices by high intensity light pulses
title_full_unstemmed Inactivation kinetics of some microorganisms in apple, melon, orange and strawberry juices by high intensity light pulses
title_sort inactivation kinetics of some microorganisms in apple, melon, orange and strawberry juices by high intensity light pulses
publishDate 2013
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02608774_v118_n3_p302_Ferrario
http://hdl.handle.net/20.500.12110/paper_02608774_v118_n3_p302_Ferrario
_version_ 1768546581962817536

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