Preparation of aqueous dispersion of β-carotene nano-composites through complex formation with starch dextrin

Jong Yea Kim, Tae Rang Seo, Seung Taik Lim

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

Aqueous dispersions of β-carotene nano-composite were prepared through a blending process with a dextrin of high amylose corn starch in immiscible phases of aqueous dextrin and organic β-carotene solutions and water solubility and stability against oxidation of β-carotene were examined. Gradual evaporation of organic solvent during the mechanical stirring allowed the formation of aqueous solutions in which β-carotene was homogeneously dispersed with dextrin. Proper control of the solid concentrations effectively induced the complex formation between dextrin and β-carotene whereas an excess amount of β-carotene (>8mg) in a dextrin solution (200mg in 50mL) induced crystallization and precipitation of β-carotene. The complex particles showed an irreversible endothermic transition of V-amylose (via DSC). X-ray diffraction analysis, however, revealed that the complex had no typical V-type crystalline arrangement. Hydrodynamic size of the complex particles in the aqueous solution could be decreased to nano-scale (16-30nm) by a mild ultrasonication. The nano-composite contained β-carotene at approximately 30% on a weight, with improved stabilities against oxidation and enzymatic digestion.

Original languageEnglish
Pages (from-to)256-263
Number of pages8
JournalFood Hydrocolloids
Volume33
Issue number2
DOIs
Publication statusPublished - 2013 Dec

Bibliographical note

Funding Information:
This research was supported by iPET (Korea Institute of Planning and Evaluation for Technology in Food, Agriculture, Forestry and Fisheries), Ministry for Food, Agriculture, Forestry and Fisheries, Republic of Korea.

Keywords

  • Amylose
  • Dextrin
  • Inclusion complex
  • Nano-composites
  • Nano-particles
  • β-Carotene

ASJC Scopus subject areas

  • Food Science
  • General Chemistry
  • General Chemical Engineering

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