Minimizing bacterial adhesion on membrane: Multiscale characterization of surface modifications - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Membrane Science Année : 2023

Minimizing bacterial adhesion on membrane: Multiscale characterization of surface modifications

Résumé

The control of biofouling is required to improve membranes performances for water filtration. In this context, developing bioinspired approaches to modify membranes and give them antifouling properties is an interesting alternative. In this study, we elaborated new anti-biofouling membranes by coating them with vanillin, a natural bioactive molecule acting as a Quorum Sensing Inhibitor (QSI). First, the adsorption of vanillin by filtration was optimized to obtain homogeneous surface modifications. The modified membranes were then characterized in terms of physical-chemical properties: the results showed that they were more hydrophobic and exhibited a 14% decrease in pure water flux. Then, their anti-fouling properties were evaluated using complementary multiscale characterization methodologies; AFM single-cell experiments showed that vanillin adsorption had an effect on both the probability of bacterial cells to adhere to the surface, and on the force of adhesion. Direct EFM and SEM observation and adhesion assays further confirmed the effect of vanillin-modified membranes at the population-scale which showed a decrease in the bacterial coverage rate up to 50%. Altogether, it confirms the multifunctionality of vanillin-coated membranes against biofouling: reduction of bacterial initial adhesion by changing the membranes surface properties and reduction of biofilm formation by quorum sensing inhibition
Fichier principal
Vignette du fichier
JMS Coetsier 062023-B.pdf (1.81 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04137642 , version 1 (22-06-2023)

Identifiants

Citer

Abigail Burato Rosales, Nadège Durban-Benizio, Xuan Loc Nguyen, Vincent Bouvier, Clémentine Lamo, et al.. Minimizing bacterial adhesion on membrane: Multiscale characterization of surface modifications. Journal of Membrane Science, 2023, 684, pp.121867. ⟨10.1016/j.memsci.2023.121867⟩. ⟨hal-04137642⟩
108 Consultations
128 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More