Transformation of Pectins into Non-Ionic or Anionic Surfactants Using a One-Pot and Cascade Mode Process |
| |
Authors: | Damien Milliasseau Jelena Jefti Freddy Pessel Daniel Plusquellec Thierry Benvegnu |
| |
Institution: | 1.Univ. Rennes, CNRS, ISCR-UMR 6226, Ecole Nationale Supérieure de Chimie de Rennes, F-35000 Rennes, France; (D.M.); (J.J.);2.SurfactGreen, 11 allée de Beaulieu, CS 50837, CEDEX 7, F-35708 Rennes, France; |
| |
Abstract: | The present article describes the one-pot synthesis of double- and single-tailed surfactants by a cascade process that involves the hydrolysis/butanolysis of pectins into butyl galacturonate monosaccharides followed by transesterification/transacetalisation processes with fatty alcohols, and subsequent aqueous basic and acid treatments. The cascade mode allows the depolymerisation to proceed more efficiently, and the purification conditions are optimised to make the production of single-tailed surfactants more manufacturable. These products in a pure form or as mixtures with alkyl glycosides resulting from butanolysis and transglycosylation of pectin-derived hexoses, exhibit attractive surface-tension properties, especially for the n-oleyl ᴅ-galactosiduronic acid products. In addition, a readily biodegradability and an absence of aquatic ecotoxicity are shown for the galacturonic acid derivatives possessing an oleyl alkyl chain at the anomeric position. |
| |
Keywords: | galacturonates pectins cascade process polysaccharide depolymerisation surfactants readily biodegradability non-ecotoxicity |
|
|