Research Article
Evaluation of the Molecular State of Piperine in Cyclodextrin Complexes by Near-Infrared Spectroscopy and Solid-State Fluorescence Measurements
Figure 6
Second-derivative NIR absorption spectra of PP/αCD systems: (a) 9000–8200 cm−1; (b) 7150–6900 cm−1; (c) 6100–5500 cm−1; and (d) 5300–5000 cm−1. Humidified: hu; heated: he; humidified-heated: hu-he.