Emulsifying properties of sugar-based surfactants prepared by chemoenzymatic synthesis

Sugar Fatty Acid Esters (SFAEs) are a class of non-ionic surfactants that can be synthesized from inexpensive natural resources. Depending on carbon chain length and nature the sugar head group, SFAEs cover wide range hydrophilic–lipophilic balance (HLB) values, which result in tunable tenside properties turn relevant for variety industrial applications. Three sugar-based (6-O-lauroyl-, 6-O-palmitoyl- 6-O-stearoyl-1-O-butyl glucopyranosides) have been prepared by lipase-catalyzed esterification isomeric mixture n-butyl glucosides. Specifically, their interfacial features together with W/O emulsifying stability over time finely evaluated (interfacial tension (IFT) emulsion turbidity water droplet size distribution), resulting glucopyranosides as most efficient ones.