About
Contact
Help
Sending publications
How to publish
Advanced Search
View Item 
  •   Home
  • Facultad de Ciencias Químicas y Farmacéuticas
  • Artículos de revistas
  • View Item
  •   Home
  • Facultad de Ciencias Químicas y Farmacéuticas
  • Artículos de revistas
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse byCommunities and CollectionsDateAuthorsTitlesSubjectsThis CollectionDateAuthorsTitlesSubjects

My Account

Login to my accountRegister
Biblioteca Digital - Universidad de Chile
Revistas Chilenas
Repositorios Latinoamericanos
Tesis LatinoAmericanas
Tesis chilenas
Related linksRegistry of Open Access RepositoriesOpenDOARGoogle scholarCOREBASE
My Account
Login to my accountRegister

Cyclodextrins-Kaempferol Inclusion Complexes: Spectroscopic and Reactivity Studies

Artículo
Thumbnail
Open/Download
IconJullian_Carolina.pdf (863.6Kb)
Publication date
2011-04
Metadata
Show full item record
Cómo citar
Jullian Matthaei, Carolina
Cómo citar
Cyclodextrins-Kaempferol Inclusion Complexes: Spectroscopic and Reactivity Studies
.
Copiar
Cerrar

Author
  • Jullian Matthaei, Carolina;
  • Brossard, Victor;
  • González, Iván;
  • Alfaro, Muriel;
  • Olea Azar, Claudio;
Abstract
The slightly water-soluble flavonoid kaempferol (KAE) and its inclusion complexes with beta-cyclodextrin (beta CD), hydroxypropyl-beta-cyclodextrin (HP beta CD) or heptakis-2,6-O-dimethyl-beta-cyclodextrin (DM beta CD) were investigated. The stoichiometric ratios and association constants describing the extent of the formation of the complexes have been determined. Binding constants, estimated from fluorescence studies at different temperatures, were analyzed so as to gain information about the mechanisms involved in the association processes. The thermodynamic data for the inclusion of KAE in DM beta CD and HP beta CD indicated that it is mainly enthalpy-driven whereas for beta CD it is an entropy-driven process. Complex formation was monitored by two-dimensional ROESY experiments through the detection of intramolecular dipolar interaction. ROESY experiments provided data indicating that the B-ring of kaempferol is immersed in the apolar cavity with the A- and C-ring protruding from the wider rim for the three cyclodextrins studied. The antioxidant studies of KAE and CDs complexes showed an increment in its antioxidant activity. The complexes behave as better antioxidants than kaempferol alone.
General note
Artículo de publicación ISI
Identifier
URI: https://repositorio.uchile.cl/handle/2250/121301
DOI: DOI: 10.1007/s10953-011-9674-6
ISSN: 0095-9782
Quote Item
JOURNAL OF SOLUTION CHEMISTRY Volume: 40 Issue: 4 Pages: 727-739 Published: APR 2011
Collections
  • Artículos de revistas
xmlui.footer.title
31 participating institutions
More than 73,000 publications
More than 110,000 topics
More than 75,000 authors
Published in the repository
  • How to publish
  • Definitions
  • Copyright
  • Frequent questions
Documents
  • Dating Guide
  • Thesis authorization
  • Document authorization
  • How to prepare a thesis (PDF)
Services
  • Digital library
  • Chilean academic journals portal
  • Latin American Repository Network
  • Latin American theses
  • Chilean theses
Dirección de Servicios de Información y Bibliotecas (SISIB)
Universidad de Chile

© 2020 DSpace
  • Access my account