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Registros recuperados: 16
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Biological silages from Tunisian shrimp and octopus by-products ArchiMer
Harrabi, Houwaida; Leroi, Francoise; Mihoubi, Nourhene Boudhrioua; Chevalier, Frederique; Kechaou, Nabil.
Biological silages were prepared from shrimp head and octopus viscera by-products recuperated from the Tunisian seafood industry. Physical and biochemical changes and microbiological profiles were determined for raw materials during fermentation and on end products. Results showed that biological silage significantly affected (P<0.05) moisture, protein, and ash contents of shrimp head (CSHS) and octopus viscera silages (COVS). CSHS and COVS were stable, and their final pH values were 4.31 ± 0.01 and 3.71 ± 0.00, respectively. Proteolysis activity was confirmed by a significant increase (P<0.05) of soluble nitrogen and low molecular weight of protein (<260 Da) found on the end products for both silages. Lipid oxidation was delayed by addition of...
Tipo: Text Palavras-chave: Shrimp by-product; Octopus by-product; Biological silage; Biochemical characteristics; Microbiological characteristics.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00337/44839/44427.pdf
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Bioprotective Effect of Lactococcus piscium CNCM I-4031 Against Listeria monocytogenes Growth and Virulence ArchiMer
Saraoui, Taous; Leroi, Francoise; Chevalier, Frederique; Cappelier, Jean-michel; Passerini, Delphine; Pilet, Marie-france.
Listeria monocytogenes is a Gram-positive pathogen occurring in many refrigerated ready-to-eat foods. It is responsible for foodborne listeriosis, a rare but severe disease with a high mortality rate (20–30%). Lactococcus piscium CNCM I-4031 has the capacity to prevent the growth of L. monocytogenes in contaminated peeled and cooked shrimp and in a chemically defined medium using a cell-to-cell contact-dependent mechanism. To characterize this inhibition further, the effect of L. piscium was tested on a collection of 42 L. monocytogenes strains. All strains were inhibited but had different sensitivities. The effect of the initial concentration of the protective and the target bacteria revealed that the inhibition always occurred when L. piscium had reached...
Tipo: Text Palavras-chave: Biopreservation; Lactococcus piscium; Listeria monocytogenes; Co-culture; Cell ratio; Scanning electron microscopy; Virulence.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00449/56065/57588.pdf
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Characterisation of the spoilage microbiota in raw salmon (Salmo salar) steaks stored under vacuum or modified atmosphere packaging combining conventional methods and PCR–TTGE ArchiMer
Mace, Sabrina; Cornet, Josiane; Chevalier, Frederique; Cardinal, Mireille; Pilet, Marie-france; Dousset, Xavier; Joffraud, Jean-jacques.
In order to characterise the spoilage related to microbiota of raw salmon, a combination of culture-dependent and -independent methods, including PCR–TTGE, was used to analyse 3 raw salmon batches stored for 3 days at chilled temperature in modified atmosphere packaging (MAP) (50% CO2/50% N2) or under vacuum. Sensory evaluation, microbiological enumeration and chemical analysis were performed after 3, 7 and 10 days of storage. At the onset of spoilage, 65 bacterial isolates were picked from the plates. Thus, 13 different genera or species were identified by phenotypic and molecular tests: Serratia spp., Photobacterium phosphoreum, Yersinia intermedia, Hafnia alvei, Buttiauxella gaviniae, Pseudomonas sp., Carnobacterium maltaromaticum, Carnobacterium...
Tipo: Text Palavras-chave: Seafood; Culture-independent method (PCR-TTGE); Sensory analysis; Photobacterium phosphoreum; Lactococcus piscium.
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00052/16277/13779.pdf
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Characterization of the spoilage potential of pure and mixed cultures of bacterial species isolated from tropical yellowfin tuna ( Thunnus albacares ) ArchiMer
Silbande, A.; Cornet, Josiane; Cardinal, Mireille; Chevalier, Frederique; Rochefort, K.; Smith-ravin, J.; Adenet, S.; Leroi, Francoise.
Aim The spoilage potential of 28 bacterial strains isolated from spoiled raw yellowfin tuna was evaluated. Methods and Results Bacterial species were inoculated in irradiated tuna matrix. Chemical changes, bacterial growth and sensory quality were monitored during aerobic storage at 8°C. Pseudomonas spp., Enterobacter spp. and Escherichia hermanii had no spoiling effect. Brochothrix thermosphacta and Carnobacterium divergens/maltaromaticum developed moderate unpleasant odors. Hafnia paralvei and Serratia spp. released strong off-odors (pyrrolidine, sulfur/cabbage). No bacterial group (except H. paralvei) combined with Pseudomonas spp. deteriorated the sensory quality of tuna. When C. divergens/maltaromaticum was associated with H. paralvei or B....
Tipo: Text Palavras-chave: Bacterial interactions; Bacterial species; Fish; Pseudomonas; Sensory quality; Spoilage potential; Tropical; Tuna.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00414/52557/53395.pdf
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Des bactéries bioprotectrices pour améliorer la qualité des produits de la mer ArchiMer
Leroi, Francoise; Brillet-viel, Anne; Chevalier, Frederique; Cardinal, Mireille; Cornet, Josiane; Pilet, Marie France.
Tipo: Text
Ano: 2012 URL: https://archimer.ifremer.fr/doc/00308/41971/41243.pdf
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Détection de la flore d'altération du poisson réfrigéré : évaluation d'un milieu de culture ArchiMer
Joffraud, Jean-jacques; Chevalier, Frederique.
The study submitted in this paper intendent to assess the ability of a culture medium for the detection and counting of chilled fish spoilage flora. Some authors used a medium allowing the detection of the whole spoilage bacteria on the basis of H2S production but this medium as been only used for cod flora analysis (Gadus morhua) coming from north sea or baltic sea. Therefore this study aimed to assess the efficiency of medium on withing flesh (Merlangius merlangus), gadidae of temperate sea water, on the one hand and salmon flesh (Salmo salar), aquacultural salmonidae, on the other hand. During this study, about 120 bacterial strains (half of them being H2S producing) were isolat respectively from whiting and salmon flesh stored in air or under vacuum....
Tipo: Text Palavras-chave: Bacteriologie alimentaire; Alteration du poisson; Flore d'alteration; Refrigeration; Food bacteriology; Spoilage; Fish; Spoilage flora; Chilling.
Ano: 1993 URL: https://archimer.ifremer.fr/doc/00462/57407/59499.pdf
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Evaluation of the spoilage potential of bacteria isolated from spoiled cooked whole tropical shrimp (Penaeus vannamei) stored under modified atmosphere packaging ArchiMer
Mace, Sabrina; Cardinal, Mireille; Jaffres, Emmanuel; Cornet, Josiane; Lalanne, Valerie; Chevalier, Frederique; Serot, Thierry; Pilet, Marie-france; Dousset, Xavier; Joffraud, Jean-jacques.
The spoilage potential of isolates belonging to five bacterial groups/species (Shewanella baltica, Carnobacterium maltaromaticum, Aeromonas salmonicida, Vibrio sp., “other Gamma-Proteobacteria” [containing one strain of Pseudoalteromonas sp. and one strain of Psychrobacter sp.]) isolated from spoiled cooked and whole tropical shrimp stored under modified atmosphere packaging (MAP) was evaluated by inoculation into ionized cooked and peeled tropical shrimp followed by storage for 32 days at 8°C. Microbial growth and sensory changes were monitored during the storage period. The major spoilage bacterial isolate groups were C. maltaromaticum and S. baltica. In order to characterize their spoilage potential further and to study the effect of their interactions,...
Tipo: Text Palavras-chave: Spoilage potential; Bacterial interaction; Specific spoilage organism; Cooked tropical shrimp; Volatile compounds.
Ano: 2014 URL: https://archimer.ifremer.fr/doc/00168/27926/26200.pdf
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Evaluation of the spoilage potential of bacteria isolated from spoiled raw salmon (Salmo salar) fillets stored under modified atmosphere packaging ArchiMer
Mace, Sabrina; Joffraud, Jean-jacques; Cardinal, Mireille; Malcheva, Mariya; Cornet, Josiane; Lalanne, Valerie; Chevalier, Frederique; Serot, Thierry; Pilet, Marie-france; Dousset, Xavier.
The spoilage potential of eight bacterial groups/species (Serratia spp., Hafnia alvei, Brochothrix thermosphacta, Carnobacterium maltaromaticum, Shewanella baltica, Lactococcus piscium, Photobacterium phosphoreum, "other Enterobacteriaceae" [containing one strain of Moellerella sp., Morganella sp. and Pectobacterium sp.]) isolated from spoiled raw salmon fillets stored under modified atmosphere packaging (MAP) was evaluated by inoculation into sterile raw salmon cubes followed by storage for 12 days at 8 degrees C. Microbial growth and sensory changes were monitored during the storage period. The dominant spoilage bacteria were C maltaromaticum, H. alvei and P. phosphoreum. In order to further characterize their spoilage potential and to study the effect...
Tipo: Text Palavras-chave: Spoilage potential; Bacterial interaction; Specific spoilage organism; Atlantic salmon; Volatile compounds.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00125/23656/22006.pdf
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Improving simultaneously the quality and safety of cooked and peeled shrimp using a cocktail of bioprotective lactic acid bacteria ArchiMer
Saraoui, Taous; Cornet, Josiane; Guillouet, Emilie; Pilet, Marie France; Chevalier, Frederique; Joffraud, Jean-jacques; Leroi, Francoise.
Tropical shrimp is of considerable economic importance in the word but is highly perishable due to microbial and chemical degradation. Biopreservation is a food preservation technology based on the addition of “positive” bacteria able to kill or prevent the growth of undesirable microorganisms. Two strains of lactic acid bacteria (LAB) have previously been selected for a biopreservation strategy: Lactococcus piscium CNCM I-4031, for its ability to prevent the sensory deterioration of seafood and Carnobacterium divergens V41, which inhibits growth of Listeria monocytogenes. The objective was to test the association of the two strains to improve both the quality and safety of shrimp. In a first trial, the two LAB were inoculated alone or in a cocktail in...
Tipo: Text Palavras-chave: Carnobacterium divergens V41; Lactococcus piscium CNCM I-4031; Penaeus vannamei; Listeria monocytogenes; Biopreservation.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00353/46412/46140.pdf
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Influence of temperature, pH and NaCl concentration on the maximal growth rate of Brochothrix thermosphacta and a bioprotective bacteria Lactococcus piscium CNCM I-4031 ArchiMer
Leroi, Francoise; Fall, Papa-abdoulaye; Pilet, Marie-france; Chevalier, Frederique; Baron, Regis.
The maximum specific growth rate (μmax) of Brochothrix thermosphacta, a spoilage bacteria of cooked peeled shrimp, and Lactococcus piscium CNCM I-4031, a bioprotective strain, was investigated under different conditions of temperature, NaCl concentrations and pH. The basic modelling approach used was the Gamma concept (γ-concept) and the model developed was then adapted to shrimp. Cardinal growth parameters were quite similar for the two strains, except for NaCl. No NaCl was required for growth and the NaClmax was three-times higher for B. thermosphacta than for L. piscium (62 and 23 g l−1 respectively). However, tolerance to NaCl was higher in seafood than in liquid broth, possibly due to presence of osmoltically active molecules. L. piscium and B....
Tipo: Text Palavras-chave: Modelling; Biopreservation; Shrimp; Lactic acid bacteria; Brochothrix thermosphacta; Spoilage bacteria; Environmental conditions.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00083/19473/17088.pdf
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Inhibition of Brochothrix thermosphacta and sensory improvement of tropical peeled cooked shrimp by Lactococcus piscium CNCM I-4031 ArchiMer
Fall, Papa-abdoulaye; Leroi, Francoise; Cardinal, Mireille; Chevalier, Frederique; Pilet, Marie-france.
Aims: To investigate the antimicrobial spectrum of Lactococcus piscium CNCM I-4031 and its protective effect in cooked and peeled shrimp against Brochothrix thermosphacta. Methods and Results: Sixteen pathogenic and spoiling bacteria were inhibited in Elliker, but not in shrimp juice agar plates. In shrimp packed under modified atmosphere and stored at 8 degrees C, B. thermosphacta (103 CFU g-1) was inhibited by 4 center dot 1 log CFU g-1 when co-inoculated with L. piscium (106 CFU g-1). Brochothrix thermosphacta spoiled the product after 11 days, with the emission of strong butter/caramel off-odours. In co-culture with L. piscium, sensory shelf-life was extended by at least 10 days. The inhibition was partially explained by a drop in pH from 6 center dot...
Tipo: Text Palavras-chave: Biopreservation; Brochothrix thermosphacta; Inhibition spectrum; Lactococcus piscium; Penaeus vanamei; Shrimp composition.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00002/11291/7884.pdf
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Protective Effect of a Non-Bacteriocinogenic Lactococcus piscium CNCM I-4031 Strain Against Listeria monocytogenes in Sterilized Tropical Cooked Peeled Shrimp ArchiMer
Fall, Papa-abdoulaye; Leroi, Francoise; Chevalier, Frederique; Guerin, Charline; Pilet, Marie-france.
The protective activity of a non-bacteriocinogenic Lactococcus piscium CNCM I-4031 strain against Listeria monocytogenes was investigated in tropical cooked peeled shrimp stored at 8°C in modified atmosphere packaging (50% N2-50% CO2). When inoculated alone (L. piscium 107 CFU g-1 and L. monocytogenes 104 CFU g-1), protective culture and target strain grew very well on shrimp reaching a maximum cell number of 109 CFU g-1 after 7 and 14 days, respectively. In the presence of L. piscium, growth of L. monocytogenes was totally prevented after 3 days of storage. The count was 3.4 log CFU g-1 lower than in the control after 10 days and until the end of storage (31 days). Using the Seafood Spoilage and Safety Predictor Software (http://sssp.dtuaqua.dk), it was...
Tipo: Text Palavras-chave: Inhibition; Biopreservation; Challenge-test; Lactic acid; Nutritional competition.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00005/11624/8281.pdf
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Research of quality indices for cold-smoked salmon using a stepwise multiple regression of microbiological counts and physico-chemical parameters ArchiMer
Leroi, Francoise; Joffraud, Jean-jacques; Chevalier, Frederique; Cardinal, Mireille.
Aims: The aim of the study was to assess the relationships between the remaining shelf-life (RSL) of cold-smoked salmon and various microbiological and physico-chemical parameters, using a multivariate data analysis in the form of stepwise forward multiple regression. Methods and Results: Thirteen batches of French cold-smoked salmon were analysed weekly during vacuum-packed storage at 5 degreesC for their lipid, water, salt, phenol, pH, total volatile basic nitrogen (TVBN) and trimethylamine contents, total psychrotrophic count, lactic acid bacteria, lactobacilli, B. thermosphacta, Enterobacteriaceae and yeast counts. At the sensory rejection time, the flora was dominated by lactobacilli, lactobacilli/Enterobacteriaceae or Carnobacteria/B. thermosphacta....
Tipo: Text Palavras-chave: Microbiological; Parameters; Regression; Cold smoked salmon.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/publication-609.pdf
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Salmon Gravlax Biopreservation: Impact on organoleptic properties, microbial ecosystem and volatilome ArchiMer
Wiernasz, Norman; Chevalier, Frederique; Cardinal, Mireille; Cornet, Josiane; Rohloff, Jens; Jerome, Marc; Chopin, Christine; Donnay-moreno, Claire; Skirnisdottir, S; Pilet, Marie France; Passerini, Delphine; Leroi, Francoise.
Seafood and fishery products are very fragile commodities with a short shelf-life as the consequence of organoleptic and microbiological qualities quick deterioration. Spoilage, resulting from microbial growth and activity, is responsible for up to 25% of food losses in post-harvest and industry1. In this context and to meet the consumer’s demand for minimally processed food, developing mild preserving technologies such as biopreservation, represents a crucial challenge. In this work, we studied the impact of 6 lactic acid bacteria (LAB), selected by Wiernasz et al. (2017)2, used as bioprotective agents on dill Gravlax microbial ecosystem, organoleptic properties and volatilome.
Tipo: Text
Ano: 2018 URL: http://archimer.ifremer.fr/doc/00459/57029/58926.pdf
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Salmon Gravlax Biopreservation With Lactic Acid Bacteria: A Polyphasic Approach to Assessing the Impact on Organoleptic Properties, Microbial Ecosystem and Volatilome Composition ArchiMer
Wiernasz, Norman; Leroi, Francoise; Chevalier, Frederique; Cornet, Josiane; Cardinal, Mireille; Rohloff, Jens; Passerini, Delphine; Skırnisdóttir, Sigurlaug; Pilet, Marie-france.
Seafood and fishery products are very perishable commodities with short shelf-lives owing to rapid deterioration of their organoleptic and microbiological quality. Microbial growth and activity are responsible for up to 25% of food losses in the fishery industry. In this context and to meet consumer demand for minimally processed food, developing mild preservation technologies such as biopreservation represents a major challenge. In this work, we studied the use of six lactic acid bacteria (LAB), previously selected for their properties as bioprotective agents, for salmon dill gravlax biopreservation. Naturally contaminated salmon dill gravlax slices, with a commercial shelf-life of 21 days, were purchased from a French industrial company and inoculated by...
Tipo: Text Palavras-chave: Metabarcoding; 16S rRNA gene; Seafood; Antilisterial activity; Volatile organic compounds; Sensory analyses.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00605/71716/70174.pdf
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Selection of bioprotective cultures for preventing cold-smoked salmon spoilage ArchiMer
Leroi, Francoise; Cornet, Josiane; Chevalier, Frederique; Cardinal, Mireille; Coeuret, Gwendoline; Chaillou, Stephane; Joffraud, Jean-jacques.
Biopreservation is a natural technology of food preservation, which consists of inoculating food with microorganisms selected for their antibacterial properties. The objective of this study was to select lactic acid bacteria (LAB) to improve the quality of cold-smoked salmon (CSS). In this work, different strains representative of the 4 dominant species, identified in a previous study by pyrosequencing the 16S rRNA gene, were isolated and their spoiling potential in CSS blocks, sterilized by ionization, was assessed by twelve trained panelists along the vacuum storage at 8 °C . Photobacterium phosphoreum, Brochothrix thermosphacta and Serratia proteamaculans released strong off-odors whereas the spoiling potential of Carnobacterium divergens was weaker....
Tipo: Text Palavras-chave: Biopreservation; Lactic acid bacteria; Sensory analysis; Seafood products; Microbial ecosystem; Pyrosequencing.
Ano: 2015 URL: https://archimer.ifremer.fr/doc/00268/37966/36045.pdf
Registros recuperados: 16
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