Dry microcapsules were obtained as red-purple powder
samples. Figure 1 shows the examination of SEM micrographs.
The particle size of the spray-dried pigment ranged
from 600 nm to 50 mm approximately, which was presented
in the formof agglomerates. All particles showed spherical in
shape with various sizes, which is typical to materials produced
by spray drying. The outer surfaces of the spray-dried
microcapsules are characterized by the presence of dents.
These dents are formed by shrinkage of the particles during
drying and cooling. Similar dents were observed in the study
of Obon et al. (2009) and Tonon et al. (2009). Various wall
materials would create different wall densities to provide protection
from the surrounding environment interacting with
the anthocyanins’ pigment in the capsule. Holes were
observed in the crust in a few particles in the anthocyanins
encapsulated with SS (Fig. 1D).