Interfacial and Foaming Properties of Tailor-Made Glycolipids—Influence of the Hydrophilic Head Group and Functional Groups in the Hydrophobic Tail oleh Rebecca Hollenbach, Annika Ricarda Völp, Ludwig Höfert, Jens Rudat, Katrin Ochsenreither, Norbert Willenbacher, Christoph Syldatk