Preparation and characterization of aqueous dispersions of dextrin and policosanol composites

Jong Yea Kim, Ju Hun Lee, Du Yun Jeong, Dong Kyun Jang, Tae Rang Seo, Seung Taik Lim

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Policosanol (50-100 mg) was dispersed in an aqueous solution (0.5-2.0% solids, w/v, 50 mL) of an amylomaize starch dextrin at 90 °C under different conditions. The dispersion of the mixture was opaque but remained homogenous for up to 7 days at an ambient temperature. The precipitates obtained by centrifuging the dispersion (5000 × g, 30 min) contained crystalline V-amylose complex of policosanol. The supernatant also contained policosanol but not in the complex form. Stepwise addition of policosanol and longer time complex formation increased the dispersible policosanol: about 95% by 30 min interval, 1.0% dextrin solution and 12 h complex formation time. Among the dispersible policosanol (95%), 70% policosanol resided in the precipitates and 25% was in the supernatant, indicating the dextrin behaved as a stabilizer for the dispersed policosanol as well as a complex forming agent with policosanol. The policosanol dispersion was sonicated up to 30 s to evaluate physical stability. Around 70% policosanol in the dispersion remained stable against the sonication treatment.

Original languageEnglish
Pages (from-to)140-146
Number of pages7
JournalCarbohydrate Polymers
Publication statusPublished - 2015 May 5

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Ltd.


  • Aqueous dispersion
  • Dextrin
  • Inclusion complex
  • Policosanol
  • V-amylose

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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