Preparation and characterization of crystalline complexes between amylose and C18 fatty acids

Tae Rang Seo, Jong Yea Kim, Seung Taik Lim

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Inclusion complexes were prepared by using high amylose maize starch and C18 fatty acids including stearic, oleic, linoleic, and α-linolenic acids, under reaction conditions varied in temperature (50, 70, and 90 °C), pH (5, 6, 7, and 8), and reaction time (3, 6, 24, and 48 h). Among the four C18 fatty acids tested, stearic acid was most effective and linoleic acid was least effective in the complex formation. The reaction at 90 °C for 24 h provided the maximum recovery (about 75%) in the complex formation using stearic and oleic acids. Linolenic acid, however, could reach its maximum recovery (>70%) when reacted for a shorter period (6 h, 90 °C). Under DSC analyses, the polymorphs formed by linolenic acid appeared more uniform compared to those by other FAs. All the complexes exhibited V type crystalline structures under X-ray diffraction analyses, consisting of type I and type II polymorphs in DSC thermograms when recovered from the reaction mixtures.

Original languageEnglish
Pages (from-to)889-897
Number of pages9
JournalLWT - Food Science and Technology
Volume64
Issue number2
DOIs
Publication statusPublished - 2015

Keywords

  • Amylose
  • Fatty acids
  • Linolenic acid
  • V-amylose complex

ASJC Scopus subject areas

  • Food Science

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