Issue 6, 2018

Unconventional media and technologies for starch etherification and esterification

Abstract

Among the most widespread starch derivatives, etherified and esterified starches play an important role. These derivatives are generally prepared by using thermal energy and conventional solvents. This review summarizes the recent advancements in the etherification and esterification of starch in unconventional media, i.e. ionic liquids or supercritical CO2, and by employing unconventional technologies, i.e. microwaves, ultrasounds or ball-milling. The present contribution aims to provide an overview to help researchers seeking an alternative medium or technology to functionalize starch. The green aspects of unconventional approaches are presented and the physical-chemical properties of modified starches obtained by these approaches are also described. Whenever possible, the advantages and disadvantages of each system are discussed. Finally, even if it is not always mentioned in the publications, the use of these experimental conditions probably leads to a partial degradation of the starch molecular structure.

Graphical abstract: Unconventional media and technologies for starch etherification and esterification

Article information

Article type
Tutorial Review
Submitted
18 10 2017
Accepted
22 1 2018
First published
22 1 2018

Green Chem., 2018,20, 1152-1168

Unconventional media and technologies for starch etherification and esterification

A. Gilet, C. Quettier, V. Wiatz, H. Bricout, M. Ferreira, C. Rousseau, E. Monflier and S. Tilloy, Green Chem., 2018, 20, 1152 DOI: 10.1039/C7GC03135A

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