Physical properties and enzymatic digestibility of hydroxypropylated ae, wx, and normal maize starch

H. Liu, L. Ramsden, H. Corke*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

113 Scopus citations

Abstract

The physical properties and enzymatic digestibility of hydroxypropylated starches prepared from high amylose (Hi-Maize™, 66% amylose; GELOSE 50, 47% amylose), waxy (MAZACA 3401X, 3.3% amylose), and normal (22.4% amylose) maize starches were studied. For normal and high amylose starch, hydroxypropylation decreased the temperature at peak viscosity and caused a large increase in both the peak and cool paste viscosities. Hydroxypropylation had little effect on the pasting properties of waxy starch. All the hydroxypropylated starches had lower gelatinization parameters (To, Tp, Tc, and ΔH) than their unmodified and control starches, but hydroxypropylation increased swelling power and solubility. After hydroxypropylation, the hardness and adhesiveness of all the starch gels decreased. Hydroxypropylation increased the clarity and enzymatic digestibility of all the starches.

Original languageEnglish
Pages (from-to)175-182
Number of pages8
JournalCarbohydrate Polymers
Volume40
Issue number3
DOIs
StatePublished - Nov 1999
Externally publishedYes

Keywords

  • Digestibility
  • Hydroxypropylated starch
  • Maize starch
  • Pasting properties

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