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Preparation and characterization of aqueous dispersions of dextrin and policosanol composites

Authors
Kim, Jong-YeaLee, Ju HunJeong, Du-YunJang, Dong-KyunSeo, Tae-RangLim, Seung-Taik
Issue Date
5-5월-2015
Publisher
ELSEVIER SCI LTD
Keywords
Policosanol; Dextrin; V-amylose; Aqueous dispersion; Inclusion complex
Citation
CARBOHYDRATE POLYMERS, v.121, pp.140 - 146
Indexed
SCIE
SCOPUS
Journal Title
CARBOHYDRATE POLYMERS
Volume
121
Start Page
140
End Page
146
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/93582
DOI
10.1016/j.carbpol.2014.12.050
ISSN
0144-8617
Abstract
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 degrees 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 x 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 30s to evaluate physical stability. Around 70% policosanol in the dispersion remained stable against the sonication treatment. (C) 2015 Elsevier Ltd. All rights reserved.
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