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Les polymères de mannose en production animale. 1. focus sur les structures chimiques rencontrées dans les aliments et les propriétés biologiques

Abstract : Mannose-based polysaccharides are widespread in the living world. From one organism to another, the length of the mannose backbone, the type of linkages between sugars, composition and the length of the ramifications are extremely variable and give these polymers different biological properties. Beyond their structural role or as water keeper molecules in plants, they participate in the glycosylation of proteins and are involved in ligand-receptor interaction. Some highly preserved viral or bacterial mannose polymers are thus, in higher animals, recognized very quickly by the host, which defends itself by initiating a non-specific response, known as “innate immune response”. Rather connected by a-bonds in viruses, bacteria and yeasts, mannose units are connected by β-bonds in higher plants. These β-mannans are found in all plant products, in particularly high level in some families (palm kernel, guar, coprah) and derived by-products used in animal feeds. Their anti-nutritional properties observed in pigs and poultry are mainly explained by the appearance of intestinal inflammation inducing performance declines, reduced food efficiency and increased energy expenditure on maintenance related to the immune system activity.
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https://hal.inrae.fr/hal-03195900
Contributor : Nathaële Vincent <>
Submitted on : Monday, April 12, 2021 - 11:31:13 AM
Last modification on : Tuesday, June 15, 2021 - 3:48:01 PM

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Anne-Laure Chateigner-Boutin, Luc Saulnier, Michel Lessire, Nathaële Wacrenier, Fabien Alleman. Les polymères de mannose en production animale. 1. focus sur les structures chimiques rencontrées dans les aliments et les propriétés biologiques. INRAE Productions Animales, INRAE, 2021, 33 (4), pp.283-294. ⟨10.20870/productions-animales.2020.33.4.4633⟩. ⟨hal-03195900⟩

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