Titre :

Morphology and physico-chemical properties of Bacillus spores surrounded or not with an exosporiumConsequences on their ability to adhere to stainless steel

Auteur(s) :

Faille, Christine [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Processus aux Interfaces et Hygiène des Matériaux [PIHM]
Lequette, Yannick [Auteur]
Processus aux Interfaces et Hygiène des Matériaux [PIHM]
Ronse, Annette [Auteur]
Processus aux Interfaces et Hygiène des Matériaux [PIHM]
Slomianny, Christian [Auteur]
Laboratoire de Physiologie Cellulaire - U 1003 [PHYCELL]
Garénaux, Estelle [Auteur]
Unité de Glycobiologie Structurale et Fonctionnelle - UMR 8576 [UGSF]
Guerardel, Yann [Auteur]
Unité de Glycobiologie Structurale et Fonctionnelle - UMR 8576 [UGSF]
Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576

Titre de la revue :

International Journal of Food Microbiology

Numéro :

143

Pagination :

125-135

Date de publication :

2010-10-15

Mot(s)-clé(s) en anglais :

Bacillus spore
Exosporium
Morphology
Appendages
Saccharidic composition

Discipline(s) HAL :

Sciences du Vivant [q-bio]/Ingénierie des aliments
Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Sciences du Vivant [q-bio]/Biochimie, Biologie Moléculaire
Physique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
Sciences de l'ingénieur [physics]/Génie des procédés

Résumé en anglais : [en]

This study was designed to elucidate the influence of spore properties such as the presence of an exosporium, on their ability to adhere to materials. This analysis was performed on 17 strains belonging to the B. cereus ...
Lire la suite >This study was designed to elucidate the influence of spore properties such as the presence of an exosporium, on their ability to adhere to materials. This analysis was performed on 17 strains belonging to the B. cereus group and to less related Bacillus species. We first demonstrated that spores of the B. cereus group, surrounded by an exosporium, differed in their morphological features such as exosporium size, number of appendages or hair-like nap length. We also found that the saccharidic composition of exosporium differed among strains, e.g. concerning a newly identified rhamnose derivative: the 2,4-O-dimethyl-rhamnose. Conversely, spores of distant Bacillus species shared morphological and physico-chemical properties with B. cereus spores. Some external features were also observed on these spores, such as a thin loose-fitting layer, whose nature is still to be determined, or a thick saccharidic layer (mainly composed of rhamnose and quinovose). The ability of spores to adhere to stainless steel varied among strains, those belonging to the B. cereus group generally being the most adherent. However, the presence of an exosporium is not sufficient to explain the ability of spores to adhere to inanimate surfaces. Indeed, when the 17 strains were compared, hydrophobicity and the number of appendages were the only significant adhesion parameters. Furthermore, the differences in spore adhesion observed within the B. cereus group were related to differences in the number of appendages, the exosporium length and to a lesser extent, the zeta potential.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
Inserm
CNRS

Collections :

• Physiologie Cellulaire (PHYCELL) - U1003
• Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576
• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Processus aux Interfaces et Hygiène des Matériaux (PIHM)

Date de dépôt :

2019-05-16T16:44:39Z
2021-03-19T11:42:10Z