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	Provedor de dados ArchiMer (3) Autor Elmnasser, Noura (3) Federighi, Michel (3) Leroi, Francoise (3) Orange, Nicole (3) Bakhrouf, Amina (2) Guillou, Sandrine (2) Bakhrouf, Amira (1) Ritz Bricaud, Magali (1) Ritz, Magali (1) Mais... Palavra-chave Pulsed light (2) Adaptation (1) Bacteria (1) Chill stres (1) Decontamination technology (1) Efficiency (1) Food safety (1) Foods (1) Inactivation (1) Listeria monocytogenes (1) Microorganism (1) Osmotic stress (1) Review (1) Stress froid (1) Stress salin (1) Sécurité des aliments (1) Treatment (1) Mais... Tipo do documento Text (3) Ano 2007 (2) 2006 (1) País France (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Bacterial inactivation using pulsed light ArchiMer Elmnasser, Noura; Ritz, Magali; Leroi, Francoise; Orange, Nicole; Bakhrouf, Amina; Federighi, Michel. Pulsed light is a new method intended for the decontamination of food surfaces using short, high frequency pulses of an intense broad spectrum. The effects of broad spectrum pulsed light on the survival of Listeria monocytogenes Scott A, Listeria monocytogenes CNL, Pseudomonas fluorescens MF37 and Photobacterium phosphoreum SF680 populations on agar and in a liquid medium were investigated during this study. The sterilisation system generated 1.5 J cm(-2) per pulse with eight lamps for 300 mu s. In the case of surface-seeded cells, a 7.8, 8.14 and > 7.14 log reduction was obtained for L. monocytogenes, Ps. fluorescens MF37 and Ph. phosphoreum, respectively, after a single pulse of treatment. Inactivation levels were lower for depth-plated cells: indeed,... Tipo: Text Palavras-chave: Efficiency; Inactivation; Bacteria; Treatment; Pulsed light. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-3041.pdf Adaptative response of Listeria monocylogenes to osmotic and chill stress: consequences on food safety. ArchiMer Elmnasser, Noura; Ritz Bricaud, Magali; Guillou, Sandrine; Leroi, Francoise; Orange, Nicole; Bakhrouf, Amira; Federighi, Michel. Listeria monocytogenes is it psychrotrophic food-borne pathogen. This organism is problematic for food production industry due to its ubiquitous distribution ill nature and its tolerance to condition of osmotic and chill stress. One common strategy employed by many bacteria and by L. monocytogenes for adaptation to osmotic stress is by the intracellular accumulation of compatible solutes. Two different types of adaptative reponses to low temperature have undertaken by L. monocytogenes. One of the responses is accomplished by adjusting membrane fluidity through alteration of the membrane fatty acid composition. A second response consists ill the accumulation of osmolytes. In this brief review we will focus on these general systems Which are Of particular... Tipo: Text Palavras-chave: Food safety; Chill stres; Osmotic stress; Adaptation; Listeria monocytogenes; Sécurité des aliments; Stress froid; Stress salin; Adaptation; Listeria monocytogenes. Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-2549.pdf Pulsed-light system as a novel food decontamination technology: a review ArchiMer Elmnasser, Noura; Guillou, Sandrine; Leroi, Francoise; Orange, Nicole; Bakhrouf, Amina; Federighi, Michel. In response to consumer preferences for high quality foods that are as close as possible to fresh products, athermal technologies are being developed to obtain products with high levels of organoleptic and nutritional quality but free of any health risks. Pulsed light is a novel technology that rapidly inactivates pathogenic and food spoilage microorganisms. It appears to constitute a good alternative or a complement to conventional thermal or chemical decontamination processes. This food preservation method involves the use of intense, short-duration pulses of broad-spectrum light. The germicidal effect appears to be due to both photochemical and photothermal effects. Several high intensity flashes of broad spectrum light pulsed per second can inactivate... Tipo: Text Palavras-chave: Review; Foods; Microorganism; Decontamination technology; Pulsed light. Ano: 2007 URL: http://archimer.ifremer.fr/doc/2007/publication-7372.pdf Registros recuperados: 3 Primeira ... 1 ... Última

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