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Title

Escherichia coli O157:H7 and Salmonella Typhimurium inactivation by the effect of mandarin, lemon, and orange by-products in reference medium and in oat-fruit juice mixed beverage

AuthorsSanz Puig, María ; Pina Pérez, Maria Consuelo ; Martínez López, Antonio ; Rodrigo Aliaga, Dolores
KeywordsCitrus by-products
New ingredients
Antimicrobials
Bactericidal concentration
Issue DateMay-2016
PublisherElsevier
CitationLWT - Food Science and Technology (2016) 66:7-14
AbstractThe antimicrobial capability of three water extracts of citrus peels was evaluated against Salmonella enterica serovar Typhimurium and Escherichia coli O157:H7 at various concentrations (0.5, 1, 5, 10%) and temperatures (5, 10, 22 °C) in a reference medium. The best of them was mandarin by-product, achieving a maximum inactivation level against S. Typhimurium (8 log10 cycles) with 5% at 5 °C. Also, this by-product had the highest total polyphenol content. Mandarin by-product showed a bactericidal effect in a food matrix also at 5 °C (≈2 log10 cycles). All results were adjusted to the Weibull model and the b values indicated that the higher concentration of mandarin, the greater the inactivation rate in reference medium, without significant differences between 5 and 10%. Similarly, in the food matrix, the inactivation rate of S. Typhimurium was higher when the mandarin by-product was added. Therefore, the mandarin by-product could be used as a control measure of S. Typhimurium in pasteurized products, which are stored under refrigeration.
Publisher version (URL)http://dx.doi.org/10.1016/j.lwt.2015.10.012
URIhttp://hdl.handle.net/10261/129119
DOI10.1016/j.lwt.2015.10.012
ISSN0023-6438
Appears in Collections:(IATA) Artículos
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