Table 3.

Physical and chemical characterization of PPE-microparticles obtained under optimal conditions.

System	PPE-MD
Inlet air temperature (°C)	130
PPE:MD ratio	1:4
EE (%)	86.0 ± 0.6
Yield (%)	58.9 ± 1.0
Moisture content (%)	5.6 ± 0.4
Water activity (aw)	0.225 ± 0.001
Hygroscopicity (g/100 g)	33.6 ± 2.7
Particle size (D4,3)	6.51 ± 0.1
Total Anthocyanin (mg cy-3-glu/g)	1.34 ± 0.02
Antioxidant capacity (FRAP) (mg TE/g)	10.1 ± 0.6

PPE: purple potato extract; MD: maltodextrin; EE: encapsulation efficiency; Cy-3-glu: cyanidin-3—glucoside; TE: Trolox equivalent.