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Artículo

Citric acid performance as alternative to sodium hypochlorite for washing and disinfection of experimentally-infected spinach leaves

Finten, GabrielIcon ; Agüero, Maria VictoriaIcon ; Jagus, Rosa Juana
Fecha de publicación: 09/2017
Editorial: Elsevier Science
Revista: LWT - Food Science and Technology
ISSN: 0023-6438
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Alimentos y Bebidas

Resumen

This research aims to investigate citric acid (CA) 0.5% as alternative to sodium hypochlorite (SH) 200 ppm for washing and disinfecting spinach leaves (Spinacia oleracea L.). The initial disinfection achieved in leaves spot-inoculated with Escherichia coli and Listeria innocua, pathogen surrogates, was investigated along with the effects of time and temperature conditions before processing on the performance of CA and SH. Next, the effectiveness of CA and SH was evaluated throughout refrigerated storage (6.5ºC, 9 days) at a low and high contamination load, 5-6 and 8-9 log CFU.g-1, respectively. And lastly, sensory impact was assessed through a trained panel and instrumental color. Results indicated that there were not significant differences between the initial disinfection achieved by CA and SH. Storing infected spinach under refrigeration, between harvest and processing, played a key role not only in reducing their deterioration but also in assuring their safety by maintaining CA and SH effectiveness against the inoculated surrogates. Citric acid performance was better in controlling surrogates´ regrowth along refrigerated storage. And there were not significant differences between CA and SH treated samples with respect to their sensory quality. Therefore, CA could constitute an alternative washing and disinfection method for spinach leaves.
Palabras clave: Minimal Processing , Microbial Safety , Escherichia Coli , Listeria Innocua , Sensory Quality
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)
Identificadores
URI: http://hdl.handle.net/11336/20085
URL: http://www.sciencedirect.com/science/article/pii/S0023643817302736
DOI: http://dx.doi.org/10.1016/j.lwt.2017.04.047
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Articulos(INTECIN)
Articulos de INST.D/TEC.Y CS.DE LA ING."HILARIO FERNANDEZ LONG"
Citación
Finten, Gabriel; Agüero, Maria Victoria; Jagus, Rosa Juana; Citric acid performance as alternative to sodium hypochlorite for washing and disinfection of experimentally-infected spinach leaves; Elsevier Science; LWT - Food Science and Technology; 82; 9-2017; 318-325
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