Metallogels from Glycolipid Biosurfactant

Alexandre Poirier (1) , Patrick Le Griel (1) , Javier Perez (2) , Daniel Hermida-Merino (3) , Petra Pernot (3) , Niki Baccile (1)

1 LCMCP-SMiLES - Spectroscopie, Modélisation, Interfaces pour L'Environnement et la Santé
2 Beamline SWING
3 ESRF - European Synchrotron Radiation Facility [Grenoble]

Low molecular weight (LMW) molecules of biological origin like microbial glycolipid biosurfactants can self-assemble in water, with tunable structure by a soft chemistry approach (pH, temperature, ionic strength). The unique structure of glycolipids give possible access to a wide variety of aqueous self-assembled structures, although highly unpredictable beforehand. The glycolipid presented here consists in a glucose group linked to a C18:1-cis fatty acid (G-C18:1) and produced by the fermentation of S. bombicola ΔugtB1. Due to the carboxylic group of the fatty acid, the supramolecular self-assembly is pH dependent. In the pH range 5-7, G-C18:1 forms vesicles, while above pH 7, it forms a micellar phase. Adding a wide range of metal salts

Domaines: Matériaux; Matière Molle [cond-mat.soft]

Alexandre Poirier, Patrick Le Griel, Javier Perez, Daniel Hermida-Merino, Petra Pernot, et al.. Metallogels from Glycolipid Biosurfactant. 2022. ⟨hal-03576357v1⟩