Table 1.

Mean particle size, polydispersity index, and zeta potential of SLN and 4NSG-SLN formulation

Formulation	Particle size (nm)	Polydispersity Index	Zeta potential (mV)	Entrapment Efficiency (%)
SLN	35.1 ± 4.2	0.3	+ 0.2	-
4NSG-SLN	82.3 ± 6.7	0.5	+ 11.8	98.7 ± 4.5

Data showed are mean ± SD, n = 3 (- means no entrapment)