MIKROENKAPSULASI OLEORESIN AMPAS JAHE (Zingiber officinale var. Rubrum) DENGAN PENYALUT MALTODEKSTRIN

Ginger essential oil distillation produces pulp which still contains oleoresin. In this study, the extraction of pulp ginger oleoresin was done for further exploitation. Microencapsulation was done to ease product handling and packaging. The aim of this study was to determine the characteristics of the microcapsules of pulp ginger oleoresin. Pulp ginger oleoresin was extracted using ethanol 96% as solvent with three variations of ratio (w/v) of 1: 4, 1:5, and 1:6. Microencapsulation was performed with spray drying technique using maltodextrin coating. In this study, there were three ratio of oleoresin :maltodextrin (1:50, 1:25, and 1:16,7). The results showed that the highest microencapsulation efficiency of pulp ginger oleoresin was attained by the ratio of 1:16,7. This microcapsule had a water content of 6.37% (db), water activity 0.20, bulk density 0.46 g/ml, solubility 622.33 seconds, total oil 42.62 x 10-2 g/g microcapsules, surface oil 18.12 x 10-2 g/g microcapsules, microencapsulation efficiency 22.13%, and the estimated size between 1.05 to 12.90 mu m. The chemical profile of pulp ginger oleoresin after the drying process was changed in this experiment.