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Provedor de dados:  ArchiMer
País:  France
Título:  Origin and ecological selection of core and food-specific bacterial communities associated with meat and seafood spoilage
Autores:  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
Data:  2015-05
Ano:  2015
Resumo:  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, psychrotrophic in nature, mainly originated from the environment (water reservoirs). We clearly show that this core community found on meat and seafood products is the main reservoir of spoilage bacteria. We also show that storage conditions exert strong selective pressure on the initial microbiota: alpha diversity in fresh samples was 189 +/- 58 operational taxonomic units (OTUs) but dropped to 27 +/- 12 OTUs in spoiled samples. The OTU assemblage associated with spoilage was shaped by low storage temperatures, packaging and the nutritional value of the food matrix itself. These factors presumably act in tandem without any hierarchical pattern. Most notably, we were also able to identify putative new clades of dominant, previously undescribed bacteria occurring on spoiled seafood, a finding that emphasizes the importance of using culture-independent methods when studying food microbiota.
Tipo:  Text
Idioma:  Inglês

Editor:  Nature Publishing Group
Formato:  application/pdf
Fonte:  Isme Journal (1751-7362) (Nature Publishing Group), 2015-05 , Vol. 9 , N. 5 , P. 1105-1118
Direitos:  2015 International Society for Microbial Ecology All rights reserved 1751-7362/15


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