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AAPS PharmSciTech. 2005 June; 6(2): E202–E208.
Published online 2005 September 30. doi:  10.1208/pt060230
PMCID: PMC2750533

Preparation and characteristics of high-amylose corn starch/pectin blend microparticles: A technical note

Summary and Conclusions

The HACS/pectin blend microparticles were prepared by spray-drying technique to obtain effective targeted drug release to the colon. The mean particle size of the micro-particles (plain and blend) that were prepared in the present study was between 5.8 and 7.3 μm. The microparticles were positively charged (ζ potential was in the range of 20.3 to 30.8), and the encapsulation efficiency was between 80.1% and 94.7%. The blending of HACS with pectin improved the encapsulation efficiency and decreased the drug dissolution in the gastric condition (pH 1.2) from the pectin-based microparticles. Results of the drug release study indicated that the colonic-controlled drug delivery could be obtained from spray-dried HACS/pectin blend microparticles, and the drug release mechanism was found to be by diffusion or erosion or a combination of both.

Key words: High-amylose corn starch, pectin, microparticles, controlled release, colon targeted drug delivery, kinetics of release

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
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