Table 1.

Physicochemical property of the developed nanoparticles

Groups	Size distribution (nm)	PDI	Zeta potential (mV)	Encapsulation efficiency (%)	ICG loading (%)
Blank NPs	264.03±23.13	0.06±0.03	−19.33±4.22	–	–
I-NPs	262.90±12.37	0.08±0.10	−20.77±3.78	58.85±5.53	1.18±0.11
OI-NPs	277.80±22.49	0.06±0.01	−20.00±5.45	56.63±8.60	1.15±0.16

Notes: No significant differences were found among the three groups. Values represent the mean ± SD (n=3).

Abbreviations: ICG, indocyanine green; I-NPs, indocyanine green loaded nanoparticles; NPs, nanoparticles; OI-NPs, oxygen and indocyanine green loaded nanoparticles; PDI, polydispersity index; SD, standard deviation.