Mimic Study on Controlled Release of Grape Polyphenols from Chitosan-sodium Alginate Microcapsules

Abstract

Abstract: The encapsulation of grape polypheols by chitosan-sodium alginate was studied. Also the controlled release of grapepolyphenols from microcapsules was investigated under the conditions of mimic gastric and intestinal juice. The results showedthat the loading efficiency of microcapsules was mostly affected by the concentration of chitosan. The microcapsulesprepared at pH6.0 exhibited slower release of grape polyphenols than that at pH5.0. The larger the molecular weight ofencapsulated substances, the longer the release time from the chitosan-sodium alginate microcapsules.

Key words: chitosan-sodium alginate microcapsules, polyphenols, controlled release

ZHANG Jun, JI Wei-Zhi, CHEN Xiao-Yun, QI Xin. Mimic Study on Controlled Release of Grape Polyphenols from Chitosan-sodium Alginate Microcapsules[J]. FOOD SCIENCE, 2004, 25(5): 102-104.

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Mimic Study on Controlled Release of Grape Polyphenols from Chitosan-sodium Alginate Microcapsules

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