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Abstract:

The aim of this work was to investigate the effect of a continuous flow-through pulsed light system (PL c , 0.73 J/cm 2 , 155 mL/min, EEO: 1.8 × 10 3 -4.1 × 10 3 kW·h/m 3 /order) single or combined with ultrasound (US, 30 min, EEO: 4.4 × 10 5 - 1.1 × 10 6 kW·h/m 3 /order) at ambient temperature on Escherichia coli ATCC 35218, Salmonella Enteritidis MA44 and Saccharomyces cerevisiae KE 162 and indigenous flora in commercial (CAJ) and freshly pressed (NAJ) apple juices. In addition, for the combined treatment, color evolution, sensory shelf life and consumer sensory field studies were also conducted during NAJ cold storage (4 °C). The Weibull model adequately characterized inactivation curves (R 2 adj : 95.0-99.1%). No differences in single or combined PL effectiveness were observed between CAJ and NAJ, resulting in 1.8-4.2 log reductions for single PL c while US + PL c led up to 3.7-6.3 log reductions of inoculated microorganisms. Moreover, the combined treatment delayed yeast and mold recovery and prevented from browning development during storage. Processed NAJ was well accepted by a group of consumers who highlighted its fresh natural apple taste. Sensory shelf life was determined by 6 days (25% rejection) with 95% confidence. Industrial relevance There is a growing consumer demand for fresh-like products as traditional thermal processing may have undesirable effects over the sensory and nutritional properties of fruit juices. From an industrial perspective, the content of this publication has the potential to be used for the development of novel products, with enhanced quality, processed by a continuous flow-through pulsed light system combined with ultrasound, both emerging technologies with good prospects for the decontamination of foods. In particular, this study showed that apple juice processed by US and PL ensured microbiological safety and was widely accepted by a group of consumers interested in sour products and its fresh natural apple taste. © 2016 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Effect of a continuous flow-through pulsed light system combined with ultrasound on microbial survivability, color and sensory shelf life of apple juice
Autor:Ferrario, M.; Guerrero, S.
Filiación:Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria1428 C.A.B.A., Argentina
Palabras clave:Color; Pulsed light; Sensory attributes; Sensory shelf life; Ultrasound; Weibull model; Cold storage; Color; Escherichia coli; Fruit juices; Fruits; Salmonella; Ultrasonics; Yeast; Emerging technologies; Microbiological safety; Nutritional properties; Pulsed light; Salmonella enteritidis; Sensory attributes; Shelf life; Weibull models; Thermal processing (foods)
Año:2016
Volumen:34
Página de inicio:214
Página de fin:224
DOI: http://dx.doi.org/10.1016/j.ifset.2016.02.002
Título revista:Innovative Food Science and Emerging Technologies
Título revista abreviado:Innovative Food Sci. Emerg. Technol.
ISSN:14668564
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14668564_v34_n_p214_Ferrario

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Citas:

---------- APA ----------
Ferrario, M. & Guerrero, S. (2016) . Effect of a continuous flow-through pulsed light system combined with ultrasound on microbial survivability, color and sensory shelf life of apple juice. Innovative Food Science and Emerging Technologies, 34, 214-224.
http://dx.doi.org/10.1016/j.ifset.2016.02.002
---------- CHICAGO ----------
Ferrario, M., Guerrero, S. "Effect of a continuous flow-through pulsed light system combined with ultrasound on microbial survivability, color and sensory shelf life of apple juice" . Innovative Food Science and Emerging Technologies 34 (2016) : 214-224.
http://dx.doi.org/10.1016/j.ifset.2016.02.002
---------- MLA ----------
Ferrario, M., Guerrero, S. "Effect of a continuous flow-through pulsed light system combined with ultrasound on microbial survivability, color and sensory shelf life of apple juice" . Innovative Food Science and Emerging Technologies, vol. 34, 2016, pp. 214-224.
http://dx.doi.org/10.1016/j.ifset.2016.02.002
---------- VANCOUVER ----------
Ferrario, M., Guerrero, S. Effect of a continuous flow-through pulsed light system combined with ultrasound on microbial survivability, color and sensory shelf life of apple juice. Innovative Food Sci. Emerg. Technol. 2016;34:214-224.
http://dx.doi.org/10.1016/j.ifset.2016.02.002