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Abstract:

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.

Registro:

Documento: Artículo
Título: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
Autor:Ferrario, M.; Alzamora, S.M.; Guerrero, S.
Filiación:Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 C.A.B.A., Argentina
Scholar of Consejo Nacional de Investigaciones Científicas, Técnicas de la República Argentina, Av. Rivadavia 1917 - C.A.B.A., Argentina
Member of Consejo Nacional de Investigaciones Científicas, Técnicas de la República Argentina, Av. Rivadavia 1917 - C.A.B.A, Argentina
Palabras clave: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
Año:2015
Volumen:50
Número:11
Página de inicio:2498
Página de fin:2507
DOI: http://dx.doi.org/10.1111/ijfs.12918
Título revista:International Journal of Food Science and Technology
Título revista abreviado:Int. J. Food Sci. Technol.
ISSN:09505423
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09505423_v50_n11_p2498_Ferrario

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Citas:

---------- APA ----------
Ferrario, M., Alzamora, S.M. & Guerrero, S. (2015) . 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. International Journal of Food Science and Technology, 50(11), 2498-2507.
http://dx.doi.org/10.1111/ijfs.12918
---------- CHICAGO ----------
Ferrario, M., Alzamora, S.M., Guerrero, S. "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" . International Journal of Food Science and Technology 50, no. 11 (2015) : 2498-2507.
http://dx.doi.org/10.1111/ijfs.12918
---------- MLA ----------
Ferrario, M., Alzamora, S.M., Guerrero, S. "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" . International Journal of Food Science and Technology, vol. 50, no. 11, 2015, pp. 2498-2507.
http://dx.doi.org/10.1111/ijfs.12918
---------- VANCOUVER ----------
Ferrario, M., Alzamora, S.M., Guerrero, S. 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. Int. J. Food Sci. Technol. 2015;50(11):2498-2507.
http://dx.doi.org/10.1111/ijfs.12918