Resveratrol Functionalized Carboxymethyl-<i>β</i>-Cyclodextrin: Synthesis, Characterization, and Photostability

Abstract

The resveratrol functionalized carboxymethyl- β -cyclodextrin conjugate was synthesized by two simple steps. The conjugate was successfully demonstrated by 1 H NMR, 13 C NMR, UV, and FTIR. The photostability of the conjugate was studied by ultraviolet absorption spectrum. After 360 min of UV light irradiation, the conjugate showed a total loss in absorbance of only 12.54%, while the resveratrol and its CM- β -CD inclusion complex showed a total loss in absorbance of 32.15% and 24.05%, respectively. The results indicate that the conjugate was more stable than resveratrol and its CM- β -CD inclusion complex.