Table 2.

The physical characteristics of DBZ-PEG-NLC and DBZ-NLC

Sample	Particle size (nm)	PI	Zeta potential (mV)	EE (%)	LC (%)
DBZ-PEG-NLC	181.3±5.6	0.20±0.028	−10.42±0.49	78.72±3.61	6.15±0.28
DBZ-NLC	194.1±6.3	0.22±0.035	−17.60±0.65	81.35±4.27	6.32±0.33

Note: Data are expressed as the mean ± SD from three separate experiments.

Abbreviations: DBZ, tanshinol borneol ester; DBZ-NLC, DBZ nanostructured lipid carriers; DBZ-PEG-NLC, polyethylene glycol (PEG)-modified and DBZ-loaded nanostructured lipid carriers; EE, encapsulation efficiency; LC, loading capacity; PI, polydisperity index.