Fig. 2. (a) UV-absorption overlay spectra for free morusin, mor-nio and void nio. The characteristic peak for morusin is around 269 nm, which could be also observed in mor-nio. The void nio provided a flat profile (b) FT-IR spectra of mor-nio in comparison to native morusin and void nio as a control. (c) Sustained drug release profile for morusin nano formulation. An enhanced release was observed in acidic pH establishing mor-nio as an effective drug delivery system for pH dependent dug release in cancer cells.