|
|
|
|
|
| Mace, Sabrina; Mamlouk, Kelthoum; Chipchakova, Stoyka; Prevost, Herve; Joffraud, Jean-jacques; Dalgaard, Paw; Pilet, Marie-france; Dousset, Xavier. |
| A specific real-time PCR quantification method combined with a propidium monoazide sample treatment step was developed to determine quantitatively the viable population of the Photobacterium phosphoreum species group in raw modified-atmosphere-packed salmon. Primers were designed to amplify a 350-bp fragment of the gyrase subunit B gene (gyrB) of P. phosphoreum. The specificity of the two primers was demonstrated by using purified DNA from 81 strains of 52 different bacterial species. When these primers were used for real-time PCR in pure culture, a good correlation (R-2 of 0.99) was obtained between this method and conventional enumeration on marine agar (MA). Quantification was linear over 5 log units as confirmed by using inoculated salmon samples. On... |
| Tipo: Text |
|
| Ano: 2013 |
URL: https://archimer.ifremer.fr/doc/00135/24623/22772.pdf |
| |
|
| |
|
|
| 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 |
| |
|
|
| Jaffres, Emmanuel; Lalanne, Valerie; Mace, Sabrina; Cornet, Josiane; Cardinal, Mireille; Serot, Thierry; Dousset, Xavier; Joffraud, Jean-jacques. |
| The spoilage potential of six bacterial species isolated from cooked and peeled tropical shrimps (Brochothrix thermosphacta, Serratia liquefaciens-like, Carnobacterium maltaromaticum, Carnobacterium divergens, Carnobacterium alterfunditum-like and Vagococcus penaei sp. nov.) was evaluated. The bacteria were inoculated into shrimps, packaged in a modified atmosphere and stored for 27 days at 8 °C. Twice a week, microbial growth, as well as chemical and sensory changes, were monitored during the storage period. The bacteria mainly involved in shrimp spoilage were B. thermosphacta, S. liquefaciens-like and C. maltaromaticum whose main characteristic odours were cheese-sour, cabbage-amine and cheese-sour-butter, respectively. The volatile fraction of the... |
| Tipo: Text |
|
| Ano: 2011 |
URL: https://archimer.ifremer.fr/doc/00040/15089/12431.pdf |
| |
|
|
| Chaillou, Stephane; Chaulot-talmon, Aurelie; Caekebeke, Helene; Cardinal, Mireille; Christieans, Souad; Denis, Catherine; Desmonts, Marie Helene; Dousset, Xavier; Feurer, Carole; Hamon, Erwann; Joffraud, Jean-jacques; La Carbona, Stephanie; Leroi, Francoise; Leroy, Sabine; Lorre, Sylvie; Mace, Sabrina; Pilet, Marie-france; Prevost, Herve; Rivollier, Marina; Roux, Dephine; Talon, Regine; Zagorec, Monique; Champomier-verges, Marie-christine. |
| The microbial spoilage of meat and seafood products with short shelf lives is responsible for a significant amount of food waste. Food spoilage is a very heterogeneous process, involving the growth of various, poorly characterized bacterial communities. In this study, we conducted 16S ribosomal RNA gene pyrosequencing on 160 samples of fresh and spoiled foods to comparatively explore the bacterial communities associated with four meat products and four seafood products that are among the most consumed food items in Europe. We show that fresh products are contaminated in part by a microbiota similar to that found on the skin and in the gut of animals. However, this animal-derived microbiota was less prevalent and less abundant than a core microbiota,... |
| Tipo: Text |
|
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00268/37960/37199.pdf |
| |
|
|
| 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 |
| |
|
|
| Jerome, Marc; Mace, Sabrina; Dousset, Xavier; Pot, Bruno; Joffraud, Jean-jacques. |
| An accurate amplified fragment length polymorphism (AFLP) method, including three primer sets for the selective amplification step, was developed to display the phylogenetic position of Photobacterium isolates collected from salmon products. This method was efficient for discriminating the three species Photobacterium phosphoreum, Photobacterium iliopiscarium and Photobacterium kishitanii, until now indistinctly gathered in the Photobacterium phosphoreum species group known to be strongly responsible for seafood spoilage. The AFLP fingerprints enabled the isolates to be separated into two main clusters that, according to the type strains, were assigned to the two species P. phosphoreum and P. iliopiscarium. P. kishitanii was not found in the collection.... |
| Tipo: Text |
Palavras-chave: Photobacterium phosphoreum; AFLP; GyrB-gene; LuxA-gene; Salmon products; Seafood spoilage. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00286/39712/38167.pdf |
| |
|
|
| 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 |
| |
|
|
|
