Microencapsulation of red ginger oleoresin in maltodextrin and carrageenan using spray drying

Abstract

This research aims to determine encapsulation efficiency and cumulative release of red ginger oleoresin from microcapsules with different wall materials. Red ginger oleoresin was added to the maltodextrin solution and followed by the addition of Tween 80. The emulsion is formed and then dried using a spray dryer. Other wall materials used are carrageenan and their mixture at weight ratios 1:1, 2:1, and 1:2. The resulting microcapsules were then analyzed encapsulation efficiency and release rate using buffer phosphate medium at pH 7.4. The highest encapsulation efficiency was 78.6%, and the lowest was 58.46% from microcapsules using maltodextrin and carrageenan with a ratio of 1:2, and the Korsmeyer-Peppas and Peppas-Shalin model with anomalous release mechanism (non-Fickian) transport and Fickian diffusion.