Studies on coumestrol/β-cyclodextrin association: Inclusion complex characterization

Franco, Camila; Schwingel, Liege; Lula, Ivana S.; Sinisterra, Rubén D.; Koester, Letícia Scherer; Bassani, Valquíria Linck

doi:10.1016/j.ijpharm.2008.10.026

Cited by 43 publications

(14 citation statements)

References 31 publications

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“…Due to the limitations of the experimental methods especially in food and pharmaceutical research, in silico modeling has been used as powerful tools for deriving information and rationalizing experimental findings on the geometry and the interaction energy of the molecular complex formation (Drakulić , Juranić , Erić , & Zloh, 2008;Filippa, Sancho, & Gasull, 2008;Francoa et al, 2009). Moreover, thermodynamic information, stoichiometry and association constant are necessary to draw a complete picture of the driving forces governing the interaction, which would be useful for the prediction of the formulations and product development.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical investigation and molecular modeling of cyclodextrin complexation mechanism with eugenol

Nuchuchua

Saesoo

Sramala

et al. 2009

Food Research International

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Section: Introductionmentioning

confidence: 99%

Physicochemical investigation and molecular modeling of cyclodextrin complexation mechanism with eugenol

Nuchuchua

Saesoo

Sramala

et al. 2009

Food Research International

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“…7a had irregularly shaped crystals [25]. In contrast, a compact and homogeneous powder-like structure was observed in Fig.…”

Section: Characterization Of the Copolymermentioning

confidence: 86%

New amphoteric flocculant containing beta-cyclodextrin, synthesis, charaterization and decolorization properties

Wang

Tian

2010

Journal of Hazardous Materials

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“…From the data analysis one can conclude that CH 3 protons from TBA undergo upfield displacements in the presence of cyclodextrin while CH 2 protons experience downfield displacements. These findings are due to host-guest interactions, which cause anisotropic effects, occurring in the CD cavity [31,32]. In fact, the most important changes were observed for -ethyl side chain, namely, with CH 2 and CH 3 protons, indicating that this part of TBA is deeply included in the CD.…”

Section: Nuclear Magnetic Resonance (Nmr) Analysis Nmr Ismentioning

confidence: 96%

Molecular Encapsulation of Herbicide Terbuthylazine in Native and Modifiedβ-Cyclodextrin

Garrido

Rodrigues

Milhazes

et al. 2017

Journal of Chemistry

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The herbicide terbuthylazine (TBA) is widely used for preemergence or postemergence control of many grass and broadleaf weeds and has, besides other issues, a poor aqueous solubility profile that results in reduced bioavailability. Cyclodextrins and modified cyclodextrins were considered, among other substances, appropriate agents for improving pesticide water solubility. Therefore, the inclusion complex formation of terbuthylazine with -cyclodextrin ( -CD) and hydroxypropyl--cyclodextrin (HP--CD) was studied to attain its aqueous solubility enhancement. Their characterization was accomplished with different analytical techniques, namely, by UV-Vis, DSC, FTIR, and 1 H NMR. From the analysis of the complexation performance of the herbicide it was concluded that the interaction of terbuthylazine with CDs leads to the formation of inclusion complexes with a stoichiometry of 1 : 1. The association constants of the TBA/ -CD and TBA/HP--CD complexes were determined by UV. The mean values obtained for the stability constants are 460.4 ± 26.5 and 532.1 ± 27.6 to TBA/ -CD and TBA/HP--CD, respectively.1 H NMR data corroborate the formation of the TBA/ -CD and TBA/HP--CD complexes synthesized by the kneading method. A formulation incorporating TBA cyclodextrin complexes might lead to an improvement in terbuthylazine bioavailability. The development of TBA-CD formulations may be interesting since it would enable, through their inclusion into the hydrophobic cavity of CDs, enhancement of solubility, bioavailability, and stability of the herbicide.

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Studies on coumestrol/β-cyclodextrin association: Inclusion complex characterization

Cited by 43 publications

References 31 publications

Physicochemical investigation and molecular modeling of cyclodextrin complexation mechanism with eugenol

Physicochemical investigation and molecular modeling of cyclodextrin complexation mechanism with eugenol

New amphoteric flocculant containing beta-cyclodextrin, synthesis, charaterization and decolorization properties

Molecular Encapsulation of Herbicide Terbuthylazine in Native and Modifiedβ-Cyclodextrin

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