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. 2022 Oct 25;14(11):2283. doi: 10.3390/pharmaceutics14112283

Figure 4.

Figure 4

A–D. FTIR spectra of curcumin, curcumin: cyclodextrin complexes β-cyclodextrin (A), Captisol (B), hydroxypropyl β-cyclodextrin (C), and hydroxyethyl β-cyclodextrin (D) prepared by physical mixing (PM) and copreciptiation (Coppt).