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Microorganisms 2017, 5(3), 52; doi:10.3390/microorganisms5030052

Insight into the Genome of Staphylococcus xylosus, a Ubiquitous Species Well Adapted to Meat Products

Université Clermont-Auvergne, INRA, MEDIS, F-63000 Clermont-Ferrand, France
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Received: 29 June 2017 / Revised: 21 August 2017 / Accepted: 25 August 2017 / Published: 29 August 2017
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Abstract

Staphylococcus xylosus belongs to the vast group of coagulase-negative staphylococci. It is frequently isolated from meat products, either fermented or salted and dried, and is commonly used as starter cultures in sausage manufacturing. Analysis of the S. xylosus genome together with expression in situ in a meat model revealed that this bacterium is well adapted to meat substrates, being able to use diverse substrates as sources of carbon and energy and different sources of nitrogen. It is well-equipped with genes involved in osmotic, oxidative/nitrosative, and acidic stress responses. It is responsible for the development of the typical colour of cured meat products via its nitrate reductase activity. It contributes to sensorial properties, mainly by the the catabolism of pyruvate and amino acids resulting in odorous compounds and by the limiting of the oxidation of fatty acids, thereby avoiding rancidity. View Full-Text
Keywords: Staphylococcus xylosus; starter; meat; carbohydrate; amino acid; antioxidant properties; osmotolerance; iron homeostasis Staphylococcus xylosus; starter; meat; carbohydrate; amino acid; antioxidant properties; osmotolerance; iron homeostasis
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Leroy, S.; Vermassen, A.; Ras, G.; Talon, R. Insight into the Genome of Staphylococcus xylosus, a Ubiquitous Species Well Adapted to Meat Products. Microorganisms 2017, 5, 52.

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