Table 2.

Particle size, PDI, and zeta potential of proliposomes

Proliposome	Mean diameter (nm)	PDI	Zeta potential (mV)
SCF-EPCS	1,012±170	0.34±0.03	−23.07±3.37
Film-EPCS	2,591±400	0.60±0.10	−19.43±2.98
SCF-DSPG	866±194	0.34±0.05	−31.64±2.06
Film-DSPG	1,518±471	0.47±0.05	−35.48±3.71

Note: Values denote the mean ± standard deviation of four separate sets of experiments.

Abbreviations: SCF-EPCS and Film-EPCS, proliposomes containing Lipoid EPCS prepared by the supercritical fluid of carbon dioxide and conventional film methods; SCF-DSPG and Film-DSPG, proliposomes containing HSPC, DSPC, DSPG prepared using supercritical fluid of carbon dioxide and conventional film methods; PDI, polydispersity index; HSPC, hydrogenated soy phosphatidylcholine; DSPC, distearoylphosphatidylcholine; DSPG, distearoylphosphatidylglycerol; EPCS, phosphatidylcholine from egg lecithin.