Effect of cyclodextrin complexation on phenylpropanoids’ solubility and antioxidant activity

Autor: Miriana Kfoury, David Landy, Lizette Auezova, Hélène Greige-Gerges, Sophie Fourmentin
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Beilstein Journal of Organic Chemistry, Vol 10, Iss 1, Pp 2322-2331 (2014)
Druh dokumentu: article
ISSN: 1860-5397
DOI: 10.3762/bjoc.10.241
Popis: The complexation abilities of five cyclodextrins (CDs) with seven phenylpropanoids (PPs) were evaluated by UV–visible spectroscopy, phase solubility studies and molecular modeling. Formation constants (Kf), complexation efficiency (CE), PP:CD molar ratio, increase in formulation bulk and complexation energy were assessed. All complexes exhibited a 1:1 stoichiometry but their stability was influenced by the nature and the position of the phenyl ring substituents. A relationship between the intrinsic solubility of guests (S0) and the solubilizing potential of CD was proposed. Molecular modeling was used to investigate the complementarities between host and guest. Finally, the antioxidant activity of encapsulated PPs was evaluated by scavenging of the stable DPPH radical.
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