Resveratrol Functionalized Carboxymethyl-β-Cyclodextrin: Synthesis, Characterization, and Photostability

Table 1

Absorbance at 305 nm of resveratrol (Res), CDRes, and inclusion complex of CM-β-CD with Res after exposure to UV radiation at 365 nm.

Exposure time to λ365nm (min)	A305nm Res	A0 − At Res	A305nm CDRes	A0 − At CDRes	A305nm CD + Res	A0 − At CD + Res
0	0.339	0	0.351	0	0.341	0
30	0.288	0.051	0.34	0.011	0.309	0.032
60	0.283	0.056	0.338	0.013	0.308	0.033
120	0.268	0.071	0.33	0.021	0.298	0.043
180	0.243	0.096	0.319	0.032	0.282	0.059
240	0.236	0.103	0.316	0.035	0.272	0.069
300	0.231	0.108	0.311	0.04	0.262	0.079
360	0.23	0.109	0.307	0.044	0.259	0.082