Synthesis of fatty acid starch esters in supercritical carbon dioxide

Henky Muljana, Sjoerd van der Knoop, Danielle Keijzer, Francesco Picchioni, Leon P. B. M. Janssen, Hero J. Heeres*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

47 Citations (Scopus)
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Abstract

This manuscript describes an exploratory study on the synthesis of fatty acid/potato starch esters using supercritical carbon dioxide (scCO(2)) as the solvent. The effects of process variables such as pressure (6-25 MPa), temperature (120-150 degrees C) and various basic catalysts and fatty acid derivatives (methyl- and vinyl esters and anhydrides) on the degree of substitution (DS) were explored in a batch reactor set-up. Products with a broad range of DS values (0.01-0.31) were obtained, the actual values depending on process conditions, type of catalyst and the fatty acid reagent. The combination of K(2)CO(3) and vinyl laurate gave the highest DS values (DS = 0.31 at 150 degrees C, 8 MPa). The introduction of the fatty acid chains has a profound effect on product properties like hydrophobicity and thermal behavior. (C) 2010 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)346-354
Number of pages9
JournalCarbohydrate Polymers
Volume82
Issue number2
DOIs
Publication statusPublished - 5-Sept-2010

Keywords

  • Fatty acid starch esters
  • Potato starch
  • Starch laurate
  • Supercritical CO(2)
  • PRESSURE PHASE-EQUILIBRIA
  • POTATO STARCH
  • CHEMICAL-MODIFICATION
  • THERMAL-PROPERTIES
  • ACETIC-ANHYDRIDE
  • METHYL PALMITATE
  • ORGANIC-SOLVENT
  • VINYL-ACETATE
  • CORN STARCH
  • PART 2

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