Table 4.

Z-average (particle diameter), PI, and zeta potential of CEO-based nanoemulsions incorporating different concentrations of Smix at HLB 14.

Smix concentration (%)	0.5	1	2	4
Z-average (nm)	117 ± 0.5 a	89 ± 0.7 b	79 ± 0.5 d	86 ± 0.8 c
PI	0.147 ± 0.018 d	0.208 ± 0.007 c	0.276 ± 0.005 b	0.303 ± 0.004 a
Zeta potential (mV)	− 22.86 ± 0.94 d	− 9.31 ± 0.52 a	− 19.70 ± 1.11 c	− 16.53 ± 0.53 b

Means ± standard deviations. Means with different letters within a row are significantly different (p < 0.05).