The crystalline/amorphous nature of the carrier materials (WPI and GA), spray dried and freeze dried microcapsules can be observed from the supplementary data (Fig. S2A–C, respectively). It can be clearly seen from these figures that the carrier materials and microcapsules showed amorphous pattern irrespective of the drying methods used. Amorphous matrixes are known to be more soluble as well as more hygroscopic and they are able to release core material more readily