Artículo de revista
Cyclodextrin inclusion complex to improve physicochemical properties of herbicide bentazon: exploring better formulations
Fecha
2012Registro en:
PLoS ONE, Volumen 7, Issue 8, 2012, e41072
19326203
10.1371/journal.pone.0041072
Autor
Yáñez, Claudia
Cañete-Rosales, Paulina
Castillo, Juan Pablo
Catalán, Nicole
Undabeytia, Tomás
Morillo, Esmeralda
Institución
Resumen
The knowledge of the host-guest complexes using cyclodextrins (CDs) has prompted an increase in the development of new formulations. The capacity of these organic host structures of including guest within their hydrophobic cavities, improves physicochemical properties of the guest. In the case of pesticides, several inclusion complexes with cyclodextrins have been reported. However, in order to explore rationally new pesticide formulations, it is essential to know the effect of cyclodextrins on the properties of guest molecules. In this study, the inclusion complexes of bentazon (Btz) with native βCD and two derivatives, 2-hydroxypropyl-β-cyclodextrin (HPCD) and sulfobutylether-β-cyclodextrin (SBECD), were prepared by two methods: kneading and freeze-drying, and their characterization was investigated with different analytical techniques including Fourier transform infrared spectroscopy (FT-IR), differential thermal analysis (DTA), X-ray diffractometry (XRD) and differential pulse volt