Study of pulsed light inactivation and growth dynamics during storage of Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 and native flora in apple, orange and strawberry juices

The response of some inoculated strains and native flora to PL treatment (Xenon lamp, 3 pulses s-1, 10 cm distance from the lamp, 71.6 J cm-2) in apple, orange and strawberry fresh juices with different absorbance, turbidity and particle size was investigated. Microbial growth dynamics during 12-day...

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Autores principales:	Alzamora, Stella Maris, Guerrero, Sandra
Publicado:	2015
Materias:	Food safety Fruit juices Physical preservation methods Pulsed light Shelf life Citrus fruits Cold storage Diseases Electric lamps Escherichia coli Food storage Fruits Listeria Particle size Salmonella Turbidity Yeast Beneficial effects Listeria innocua Microbial growth dynamics Preservation methods Salmonella enteritidis Strawberry juice
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09505423_v50_n11_p2498_Ferrario http://hdl.handle.net/20.500.12110/paper_09505423_v50_n11_p2498_Ferrario
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09505423_v50_n11_p2498_Ferrario
record_format	dspace
spelling	paper:paper_09505423_v50_n11_p2498_Ferrario2023-06-08T15:54:45Z Study of pulsed light inactivation and growth dynamics during storage of Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 and native flora in apple, orange and strawberry juices Alzamora, Stella Maris Guerrero, Sandra Food safety Fruit juices Physical preservation methods Pulsed light Shelf life Citrus fruits Cold storage Diseases Electric lamps Escherichia coli Food storage Fruit juices Fruits Listeria Particle size Salmonella Turbidity Yeast Beneficial effects Listeria innocua Microbial growth dynamics Preservation methods Pulsed light Salmonella enteritidis Shelf life Strawberry juice Food safety The response of some inoculated strains and native flora to PL treatment (Xenon lamp, 3 pulses s-1, 10 cm distance from the lamp, 71.6 J cm-2) in apple, orange and strawberry fresh juices with different absorbance, turbidity and particle size was investigated. Microbial growth dynamics during 12-day storage (5 °C) of PL-treated juices was also evaluated. PL treatments provoked 0.3-2.6 log reductions for inoculated microorganisms and 0.1-0.7 for native flora. High turbidity and particles with high UV absorbance seemed to play a major role in the PL efficiency compared to particle size. Cold storage of PL-processed juices provoked an increase in Salmonella Enteritidis and Listeria innocua inactivation, achieving 5.0-8.0 log reductions, while no recovery of Escherichia coli and retardation for yeast growth was observed, compared to untreated samples. This study gives valuable information regarding the influence of juice variables on PL effectiveness and emphasises the beneficial effect of a postcold storage on microbial safety of PL-treated juices. © 2015 Institute of Food Science and Technology. Fil:Alzamora, S.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Guerrero, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09505423_v50_n11_p2498_Ferrario http://hdl.handle.net/20.500.12110/paper_09505423_v50_n11_p2498_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	Food safety Fruit juices Physical preservation methods Pulsed light Shelf life Citrus fruits Cold storage Diseases Electric lamps Escherichia coli Food storage Fruit juices Fruits Listeria Particle size Salmonella Turbidity Yeast Beneficial effects Listeria innocua Microbial growth dynamics Preservation methods Pulsed light Salmonella enteritidis Shelf life Strawberry juice Food safety
spellingShingle	Food safety Fruit juices Physical preservation methods Pulsed light Shelf life Citrus fruits Cold storage Diseases Electric lamps Escherichia coli Food storage Fruit juices Fruits Listeria Particle size Salmonella Turbidity Yeast Beneficial effects Listeria innocua Microbial growth dynamics Preservation methods Pulsed light Salmonella enteritidis Shelf life Strawberry juice Food safety Alzamora, Stella Maris Guerrero, Sandra Study of pulsed light inactivation and growth dynamics during storage of Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 and native flora in apple, orange and strawberry juices
topic_facet	Food safety Fruit juices Physical preservation methods Pulsed light Shelf life Citrus fruits Cold storage Diseases Electric lamps Escherichia coli Food storage Fruit juices Fruits Listeria Particle size Salmonella Turbidity Yeast Beneficial effects Listeria innocua Microbial growth dynamics Preservation methods Pulsed light Salmonella enteritidis Shelf life Strawberry juice Food safety
description	The response of some inoculated strains and native flora to PL treatment (Xenon lamp, 3 pulses s-1, 10 cm distance from the lamp, 71.6 J cm-2) in apple, orange and strawberry fresh juices with different absorbance, turbidity and particle size was investigated. Microbial growth dynamics during 12-day storage (5 °C) of PL-treated juices was also evaluated. PL treatments provoked 0.3-2.6 log reductions for inoculated microorganisms and 0.1-0.7 for native flora. High turbidity and particles with high UV absorbance seemed to play a major role in the PL efficiency compared to particle size. Cold storage of PL-processed juices provoked an increase in Salmonella Enteritidis and Listeria innocua inactivation, achieving 5.0-8.0 log reductions, while no recovery of Escherichia coli and retardation for yeast growth was observed, compared to untreated samples. This study gives valuable information regarding the influence of juice variables on PL effectiveness and emphasises the beneficial effect of a postcold storage on microbial safety of PL-treated juices. © 2015 Institute of Food Science and Technology.
author	Alzamora, Stella Maris Guerrero, Sandra
author_facet	Alzamora, Stella Maris Guerrero, Sandra
author_sort	Alzamora, Stella Maris
title	Study of pulsed light inactivation and growth dynamics during storage of Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 and native flora in apple, orange and strawberry juices
title_short	Study of pulsed light inactivation and growth dynamics during storage of Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 and native flora in apple, orange and strawberry juices
title_full	Study of pulsed light inactivation and growth dynamics during storage of Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 and native flora in apple, orange and strawberry juices
title_fullStr	Study of pulsed light inactivation and growth dynamics during storage of Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 and native flora in apple, orange and strawberry juices
title_full_unstemmed	Study of pulsed light inactivation and growth dynamics during storage of Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 and native flora in apple, orange and strawberry juices
title_sort	study of pulsed light inactivation and growth dynamics during storage of escherichia coli atcc 35218, listeria innocua atcc 33090, salmonella enteritidis ma44 and saccharomyces cerevisiae ke162 and native flora in apple, orange and strawberry juices
publishDate	2015
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09505423_v50_n11_p2498_Ferrario http://hdl.handle.net/20.500.12110/paper_09505423_v50_n11_p2498_Ferrario
work_keys_str_mv	AT alzamorastellamaris studyofpulsedlightinactivationandgrowthdynamicsduringstorageofescherichiacoliatcc35218listeriainnocuaatcc33090salmonellaenteritidisma44andsaccharomycescerevisiaeke162andnativeflorainappleorangeandstrawberryjuices AT guerrerosandra studyofpulsedlightinactivationandgrowthdynamicsduringstorageofescherichiacoliatcc35218listeriainnocuaatcc33090salmonellaenteritidisma44andsaccharomycescerevisiaeke162andnativeflorainappleorangeandstrawberryjuices
_version_	1768544510868979712

Study of pulsed light inactivation and growth dynamics during storage of Escherichia coli ATCC 35218, Listeria innocua ATCC 33090, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE162 and native flora in apple, orange and strawberry juices

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