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Artículo

Inactivation of Listeria monocytogenes and Salmonella Typhimurium in strawberry juice enriched with strawberry polyphenols

Vallejo, Claudia VeronicaIcon ; Minahk, Carlos JavierIcon ; Rollan, Graciela CelestinaIcon ; Rodriguez Vaquero, Maria JoseIcon
Fecha de publicación: 30/01/2021
Editorial: John Wiley & Sons Ltd
Revista: Journal of the Science of Food and Agriculture
ISSN: 0022-5142
e-ISSN: 1097-0010
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Biología Celular, Microbiología

Resumen

BACKGROUND: Low molecular-weight phenolic fractions (LMPFs) were extracted from Albion (LMPF-A) and Camarosa (LMPF-C) strawberry cultivars. Their antibacterial activity against Listeria monocytogenes and Salmonella Typhimurium cocktails in vitro and in vivo was investigated using strawberry juice as a food model. This study also sought to determine their antibacterial mechanism. RESULTS: Quercetin was identified as a principal compound in both phenolic fractions. The minimum bactericide concentration (MBC) values were 750 and 850 μg mL−1 (LMPF-C) and 800 and 950 μg mL−1 (LMPF-A) against S.Typhimurium and L. monocytogenes, respectively. The possible antibacterial activity of the phenolic extracts could be related to the release of phosphate and potassium ions, the effect of the disruption of membrane integrity on L. monocytogenes, and the effect of the inhibition of dihydronicotinamide adenine dinucleotide (NADH) oxidase activity on S. Typhimurium. Quercetin and kaempferol were the most active compounds in producing bacterial damage. Strawberry juice supplemented with the phenolic fractions and incubated at 37, 20, and 4 °C reduced bacterial viability; moreover, after treatment with the phenolic fraction at the lowest temperature, no viable cells were detected after 7 days’ incubation. Salmonella was more sensitive to the supplements than Listeria in strawberry juice. CONCLUSIONS: This study could form the basis for the development of natural antibacterial agents that could be included in natural juice or used by the pharmaceutical industry.
Palabras clave: ANTIBACTERIAL ACTION MECHANISM , LISTERIA MONOCYTOGENES , PHENOLIC EXTRACTS , SALMONELLA TYPHIMURIUM , STRAWBERRY JUICE
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info:eu-repo/semantics/embargoedAccess 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/11336/124711
DOI: https://doi.org/10.1002/jsfa.10653
URL: https://onlinelibrary.wiley.com/doi/10.1002/jsfa.10653
Colecciones
Articulos(CCT - NOA SUR)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Articulos(CERELA)
Articulos de CENTRO DE REFERENCIA PARA LACTOBACILOS (I)
Articulos(INSIBIO)
Articulos de INST.SUP.DE INVEST.BIOLOGICAS
Citación
Vallejo, Claudia Veronica; Minahk, Carlos Javier; Rollan, Graciela Celestina; Rodriguez Vaquero, Maria Jose; Inactivation of Listeria monocytogenes and Salmonella Typhimurium in strawberry juice enriched with strawberry polyphenols; John Wiley & Sons Ltd; Journal of the Science of Food and Agriculture; 101; 2; 30-1-2021; 441-448
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