Skip to main content
. 2023 Oct 26;12(11):1913. doi: 10.3390/antiox12111913

Figure 3.

Figure 3

Stability analysis of RP@ChiNCs (5 wt.%) under different conditions. (A) Photographs of ChiNC and RP@ChiNC solutions. (B) Photograph of lyophilized RP@ChiNCs in the powder state. (C) Hydrodynamic diameters and (D) PDI of RP@ChiNCs in deionized (DI) water and phosphate-buffered saline (PBS) before and after freeze drying (FD). (E) Hydrodynamic diameters and (F) PDI of RP@ChiNCs after 4 weeks of storage in DI water and PBS at 37 °C and 100 rpm. Antioxidant activities of RP@ChiNCs (5 wt.%). (G) Results of DPPH radical scavenging assay of RP, ChiNCs, and RP@ChiNCs after 4 weeks of storage at 37 °C. (H) The percentage of non-degraded RP in RP@ChiNCs compared to bare RP at different storage time points at 37 °C. (I) In vitro skin permeation of RP and RP@ChiNCs at different time intervals in a Franz-type diffusion cell.