Ortuño Cases, C.; Balaban, M.; Benedito Fort, JJ. (2014). Modelling of the inactivation kinetics of Escherichia coli, Saccharomyces cerevisiae and pectin methylesterase in orange juice treated with ultrasonic-assisted supercritical carbon dioxide. Journal of Supercritical Fluids. 90:18-26. https://doi.org/10.1016/j.supflu.2014.03.004
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/80702
Título:
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Modelling of the inactivation kinetics of Escherichia coli, Saccharomyces cerevisiae and pectin methylesterase in orange juice treated with ultrasonic-assisted supercritical carbon dioxide
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Autor:
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Ortuño Cases, Carmen
Balaban, Murat
Benedito Fort, José Javier
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Entidad UPV:
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Universitat Politècnica de València. Departamento de Tecnología de Alimentos - Departament de Tecnologia d'Aliments
Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería Agronómica y del Medio Natural - Escola Tècnica Superior d'Enginyeria Agronòmica i del Medi Natural
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Fecha difusión:
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Resumen:
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[EN] The combined effect of supercritical carbon dioxide (SC-CO2) and high power ultrasound (HPU) on the inactivation kinetics of Escherichia coli, Saccharomyces cerevisiae and pectin-methyl esterase (PME) in orange juice ...[+]
[EN] The combined effect of supercritical carbon dioxide (SC-CO2) and high power ultrasound (HPU) on the inactivation kinetics of Escherichia coli, Saccharomyces cerevisiae and pectin-methyl esterase (PME) in orange juice was studied in order to select models that can predict their inactivation behaviour based on process parameters. Experiments were performed at different temperatures (31-41 degrees C, 225 bar) and pressures (100-350 bar, 36 degrees C). The inactivation rate of E. coli, S. cerevisiae and PME increased with pressure and temperature during SC-CO2 + HPU treatments. The SC-CO2 + HPU inactivation kinetics of E. coli, S. cerevisiae and PME were represented by models that included temperature, pressure and treatment time as variables, based on the Biphasic, the Peleg Type B, and the fractional models, respectively. The HPU-assisted SC-CO2 batch system permits the use of mild process conditions and treatment times that can be even shorter than those of continuous SC-CO2 systems. (C) 2014 Elsevier B.V. All rights reserved.
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Palabras clave:
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Supercritical inactivation
,
Residual enzyme activity
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Inactivation kinetics
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Ultrasound
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Modelling
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Synergistic effect.
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Derechos de uso:
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Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
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Fuente:
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Journal of Supercritical Fluids. (issn:
0896-8446
) (eissn:
1872-8162
)
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DOI:
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10.1016/j.supflu.2014.03.004
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Editorial:
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Elsevier
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Versión del editor:
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http://doi.org/10.1016/j.supflu.2014.03.004
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Código del Proyecto:
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info:eu-repo/grantAgreement/MEC//CSD2007-00016/ES/PRODUCTOS CARNICOS PARA EL SIGLO XXI: SEGUROS, NUTRITIVOS Y SALUDABLES/
info:eu-repo/grantAgreement/GVA//GVPRE%2F2010%2F062/
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Agradecimientos:
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The authors acknowledge the financial support from project CSD2007-00016 (CONSOLIDER-INGENIO 2010) funded by the Spanish Ministry of Economy and Competitiveness (Madrid, Spain) and from project PROMETEO/2010/062 financed ...[+]
The authors acknowledge the financial support from project CSD2007-00016 (CONSOLIDER-INGENIO 2010) funded by the Spanish Ministry of Economy and Competitiveness (Madrid, Spain) and from project PROMETEO/2010/062 financed by the Generalitat Valenciana (Conselleria d'Educacio, Cultura i Esport, Valencia, Spain). The authors acknowledge the Universitat Politecnica de Valencia for the FPI grant given to Carmen Ortuno Cases and Dr. Emilia Matallana and Dr. Paula Alepuz for the generous gift of S. cerevisiae T73 and E.coli DH1 strains, respectively.
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Tipo:
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Artículo
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