Table 1.

Size, PDI, and ζ-potential of empty and curcumin loaded SLNs in bidistilled water.

Systems	Z-average (nm)	PDI	ζ-potential (mV) ± SD
empty SLNs	159.0	0.275	+44.9 ± 7.5
Curcumin SLNs	302.5	0.544	+41.4 ± 4.6

Table 1 shows that the curcumin presence inside the nanoparticle system caused an increase of the mean size (from 159 nm to 302 nm) and polidispersity index (PDI). The zeta potential values, instead, were similar in both the systems considered and they ensured an adequate repulsion of particles.