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Origin and ecological selection of core and food-specific bacterial communities associated with meat and seafood spoilage ArchiMer
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,...
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Ano: 2015 URL: https://archimer.ifremer.fr/doc/00268/37960/37199.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
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