Table 2. Size, ζ-Potential, and Encapsulation Efficiency of the Three Different Kinds of Curcumin-Loaded Liposomes^a.

samples	size (nm)	PDI	ζ-potential (mV)	encapsulation efficiency (%)
CURC-LP (pH 2.5)	324.8 ± 54.1	0.27 ± 0.03	–18.57 ± 3.62	73.7 ± 1.6
CURC-LP (pH 5.0)	342.2 ± 37.1	0.27 ± 0.03	–18.37 ± 2.31	40 ± 2.2
CURC-LP (pH 7.4)	309 ± 37.9	0.15 ± 0.03	–9.15 ± 1.24	64 ± 1

^aData are presented as the mean ± s.d. (n = 3).