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Registros recuperados: 6
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Effect of inoculation of Carnobacterium divergens V41, a biopreservative strain against Listeria monocytogenes risk, on the microbiological, chemical and sensory quality of cold-smoked salmon ArchiMer
Brillet, Anne; Pilet, Marie-france; Prevost, Hervé; Cardinal, Mireille; Leroi, Francoise.
The aim of this study was to develop a biopreservation strategy for cold-smoked salmon (CSS) by the use of lactic acid bacteria previously selected for their capability to inhibit the growth of Listeria monocytogenes in the product. The spoiling potential of three Carnobacterium strains (Carnobacterium divergens V41, Carnobacterium piscicola V1 and SF668) was tested in sterile CSS blocks inoculated by 10(4-5) CFU g(-1) and stored under vacuum for 9 days at 4 degrees C followed by 19 days at 8 degrees C. C. divergens V41 grew a little faster than the other strains and none of the three carnobacteria showed any adverse effect on quality of the product, i.e. no off-odour detected by a trained panel, no total volatile basic nitrogen (TVBN) production, no...
Tipo: Text Palavras-chave: Sensory analysis; Biogenic amine; Spoilage microflora; Carnobacterium; Biopreservation; Cold smoked salmon.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/publication-724.pdf
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Hurdle technology to ensure the safety of seafood products ArchiMer
Leroi, Francoise; Amarita, Felix; Arboleya, Juan Carlos; Bjørkevoll, Ingebright; Cruz, Ziortza; Dousset, Xavier; Izurieta, E; Joffraud, Jean-jacques; Lasagabaster, Amaïa; Lauzon, Hélène-liette; Lorentzen, G; Martínez De Marañón, Iñigo; Matamoros, Sébastien; Miranda, I; Nuin, Maider; Olabarrieta, Idoia; Olsen, R; Pilet, Marie-france; Prevost, Hervé; Skjerdal, Taran.
The microbial safety and stability of most food, are based on an application of preservative factors called hurdles. Each hurdle implies putting microorganisms in a hostile environment, which inhibits their growth or causes their death (Leistner, 2000). Some of those hurdles have been empirically used for years to stabilize meat, fish, milk and vegetables. This sometimes leads to completely different product with its own new taste characteristics. Examples of hurdles in marine products are salt (salted cod, klipfish), smoke (cold or hot smoked salmon, herring), acids (marinated products, pickles), temperature (high or low), fermentative microorganisms (traditional Asian sauces) and more recently redox potential (vacuum-packed products). Those preservative...
Tipo: Text
Ano: 2008 URL: http://archimer.ifremer.fr/doc/2006/publication-6492.pdf
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Maîtrise du développement de Listeria monocytogenes dans le saumon fumé : intérêt de la biopréservation par des bactéries lactiques ArchiMer
Richard, Christelle; Leroi, Francoise; Brillet-viel, Anne; Rachman, Cinta; Connil, Nathalie; Drider, Djamel; Pilet, Marie-france; Onno, Bernard; Dousset, Xavier; Prevost, Hervé.
The interest of biopreservation using lactic bacteria to improve the food security of smoked salmon was evaluated. Cold smoked salmon is a non-stable microbiological product whose physicochemical characteristics allow the development of Listeria monocytogenes which constitutes the major microbiological risk depending on the consumption of this product. Biodiversity of the microflora of smoked salmon and its evolution during conservation, the origin of the contamination by Listeria and its consequences, and the parameters of the manufacturing process allowing a better control of microbiological quality are discussed. The innovating concept of biopreservation of smoked salmon is developed. It consists of an inoculation of salmon by a competitive lactic flora...
Tipo: Text Palavras-chave: Saumon fumé; Bactérie lactique; Biopréservation; Listeria; Carnobacterium; Cold smoked salmon; Lactic acid bacteria; Biopreservation; Listeria; Carnobacterium.
Ano: 2004 URL: http://archimer.ifremer.fr/doc/00000/10768/7509.pdf
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Optimization of growth and bacteriocin activity of the food bioprotective Carnobacterium divergens V41 in an animal origin protein free medium ArchiMer
Brillet-viel, Anne; Pilet, Marie-france; Courcoux, Philippe; Prevost, Hervé; Leroi, Francoise.
Optimization of Carnobacterium divergens V41 growth and bacteriocin activity in a culture medium deprived of animal protein, needs for food bioprotection, was performed by using a statistical approach. In a screening experiment, twelve factors (pH, temperature, carbohydrates, NaCl, yeast extract, soy peptone, sodium acetate, ammonium citrate, magnesium sulphate, manganese sulphate, ascorbic acid and thiamine) were tested for their influence on the maximal growth and bacteriocin activity using a two-level incomplete factorial design with 192 experiments performed in microtiter plate wells. Based on results, a basic medium was developed and three variables (pH, temperature and carbohydrates concentration) were selected for a scale-up study in bioreactor. A...
Tipo: Text Palavras-chave: Optimization; Carnobacterium; Bacteriocin; Experimental design; Bioreactor; Growth; Cold-smoked salmon.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00345/45615/45236.pdf
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Selection of non-tyramine producing Carnobacterium strains for the biopreservation of cold-smoked salmon ArchiMer
Brillet-viel, Anne; Matamoros, Sebastien; Blanchet-chevrollier, Christine; Leroi, Francoise; Prevost, Hervé; Pilet, Marie-france.
In this study, we have screened a colLection of Carnobacterium strains that could be used for biopreservation in order to find a natural tyramine negative strain. This screening was performed using the detection of a part of the tyrosine decarboxylase gene by PCR test. On 35 strains of Carnobacterium tested, all showed the presence of the tdc gene suggesting that they all produce tyramine. This was assessed by the quantification of tyramine production for 10 strains. In a second part, a mutation procedure using ethyl methyl sulfonate was used to select a tyramine negative mutant of Carnobacterium divergens V41 that 1S a good candidate for biopreservation applications. A mutant strain called C. divergens V41A8 was selected and characterized. The mutant was...
Tipo: Text Palavras-chave: Salmon; Carnobacterium; Biopreservation.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/00007/11824/8574.pdf
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Selection of psychotrophic bacteria active against spoilage and pathogenic micro-organisms relevant for seafood products ArchiMer
Matamoros, Sébastien; Pilet, Marie-france; Gigout, Frédérique; Prevost, Hervé; Leroi, Françoise.
In this study, 51 seafood products were screened to select psychrophilic inhibiting lactic acid bacteria. 5575 colonies were tested for inhibition against four target strains : Listeria monocytogenes, Staphylococcus xylosus, Pseudomonas sp. and Serratia liquefaciens. 456 colonies (8,2%) showed inhibition and 132 (28,9%) of them were picked up. 54 isolates growing at 15°C but not at 30°C were selected. Basic phenotypic characteristics (Gram, catalase and oxidase test) were then tested. Finally, 52 presumptive psychrophilic LAB strains were selected. The inhibition spectrum of these strains was enlarged to 14 spoiling or pathogenic target strains relevant for seafood products. The inhibition profiles were recorded, and clustering was made to separate eight...
Tipo: Text Palavras-chave: Biopreservation; Seafood products; Psychrophilic lactic acid bacteria; Inhibition.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/00002/11339/7888.pdf
Registros recuperados: 6
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