Table 1.

Physicochemical characteristics of spray-dried chitosan microparticles.

Parameter	Value
Particle diameter
Mean size (µm)	5.61 ± 0.57
d10 (µm)	1.56 ± 0.04
d50 (µm)	4.15 ± 0.20
d90 (µm)	10.81 ± 1.19
Span	2.22 ± 0.19
Zeta potential (mV)	+58.7 ± 3.7

d10, d50, and d90: particle diameters determined respectively at the 10th, 50th and 90th percentile of undersized particles. Span: polydispersity index of particle size distribution—(d90–d10)/d50. Data are expressed as mean ± standard deviation (n = 6).