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 of the sugar head group, SFAEs cover a wide range of hydrophilic-lipophilic balance (HLB) values, which result in tunable tenside properties and in turn relevant for a wide variety of industrial applications. Three sugar-based surfactants (6-O-lauroyl-, 6-O-palmitoyland 6-O-stearoyl-1-O-butyl glucopyranosides) have been prepared by a lipase-catalyzed esterification of isomeric mixture of n-butyl glucosides. Specifically, their interfacial features together with W/O emulsifying properties and stability over time have been finely evaluated (interfacial tension (IFT) values, W/O emulsion turbidity and water droplet size distribution), resulting 6-O-palmitoyl- and 6-O-stearoyl-1-O-butyl glucopyranosides as the most efficient ones.

Emulsifying properties of sugar-based surfactants prepared by chemoenzymatic synthesis / S. Sangiorgio, E. Pargoletti, M. Rabuffetti, M.S. Robescu, R. Semproli, D. Ubiali, G. Cappelletti, G. Speranza. - In: COLLOIDS AND INTERFACE SCIENCE COMMUNICATIONS. - ISSN 2215-0382. - 48:(2022), pp. 100630.1-100630.6. [10.1016/j.colcom.2022.100630]

Emulsifying properties of sugar-based surfactants prepared by chemoenzymatic synthesis

S. Sangiorgio;E. Pargoletti;M. Rabuffetti;G. Cappelletti
;
G. Speranza
2022

Abstract

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 of the sugar head group, SFAEs cover a wide range of hydrophilic-lipophilic balance (HLB) values, which result in tunable tenside properties and in turn relevant for a wide variety of industrial applications. Three sugar-based surfactants (6-O-lauroyl-, 6-O-palmitoyland 6-O-stearoyl-1-O-butyl glucopyranosides) have been prepared by a lipase-catalyzed esterification of isomeric mixture of n-butyl glucosides. Specifically, their interfacial features together with W/O emulsifying properties and stability over time have been finely evaluated (interfacial tension (IFT) values, W/O emulsion turbidity and water droplet size distribution), resulting 6-O-palmitoyl- and 6-O-stearoyl-1-O-butyl glucopyranosides as the most efficient ones.
Sugar fatty acid esters; Biosurfactants; Sustainable synthesis; Biocatalysis; Immobilized lipase; W; O emulsifying properties; Interfacial features
Settore CHIM/02 - Chimica Fisica
Settore CHIM/06 - Chimica Organica
CAR_RIC21GSPER_01 - Integrated platform for the sustainable production of bio-based surfactants from renewable resources (BioSurf) - SPERANZA, GIOVANNA - CAR_RIC - Bandi Fondazione Cariplo - 2021
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/940426
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