Complex formation between amylomaize dextrin and n-butanol by phase separation system

Jong Yea Kim, Seung Taik Lim

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Crystalline dextrin-butanol particles were prepared through a complex formation using separated phases of an aqueous dextrin solution and n-butanol. The dextrin concentration and temperature for the complex formation were important parameters to determine the matrix structure of the complex. When dextrin concentration was relatively high (2 or 3%) and the temperature was low (25 °C), amorphous or B-type crystalline particles were produced. However, at a lower dextrin concentration (1%) and a higher temperature (50 or 70 °C), VH crystalline particles with d-spacings of 1.123, 0.657, and 0.429 nm were produced. Mechanical stirring during the complex formation resulted in smaller size (less than 200 nm) and higher yield (more than 50% based on dextrin) of the complex. The complex particles had rectangular shapes with sizes less than 200 nm, and mainly consisted of long and linear dextrins.

Original languageEnglish
Pages (from-to)264-269
Number of pages6
JournalCarbohydrate Polymers
Volume82
Issue number2
DOIs
Publication statusPublished - 2010 Sep 5

Keywords

  • Amylose
  • Complex
  • Phase separation
  • V-dextrin
  • n-Butanol

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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