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| Indexado |
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| DOI | 10.1021/NP100465H | ||||
| Año | 2010 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
A novel simultaneous phase-trafficking approach using spatially separated solid-supported reagents for rapid separation of neutral, basic, and acidic compounds from organic plant extracts with minimum labor is reported. Acidic and basic ion-exchange resins were physically separated into individual sacks ("tea bags") for trapping basic and acidic compounds, respectively, leaving behind in solution neutral components of the natural mixtures. Trapped compounds were then recovered from solid phase by appropriate suspension in acidic or basic solutions. The feasibility of the proposed separation protocol was demonstrated and optimized with an "artificial mixture" of model compounds. In addition, the utility of this methodology was illustrated with the successful separation of the alkaloid skytanthine from Skytanthus acutus Meyen and the main catechins and caffeine from Camellia sinensis L. (Kuntze). This novel approach offers multiple advantages over traditional extraction methods, as it is not labor intensive, makes use of only small quantities of solvents, produces fractions in adequate quantities for biological assays, and can be easily adapted to field conditions for bioprospecting activities.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Araya, Juan J. | Hombre |
UNIV KANSAS - Estados Unidos
University of Kansas School of Pharmacy - Estados Unidos |
| 2 | MONTENEGRO-RIZZARDINI, GLORIA DEL CARMEN | Mujer |
Pontificia Universidad Católica de Chile - Chile
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| 3 | Mitscher, Lester A. | Hombre |
UNIV KANSAS - Estados Unidos
University of Kansas School of Pharmacy - Estados Unidos |
| 4 | Timmermann, Barbara N. | Mujer |
UNIV KANSAS - Estados Unidos
University of Kansas School of Pharmacy - Estados Unidos |
| Fuente |
|---|
| Fogarty International Center |
| National Institutes of Health (NIH) |
| University of Costa Rica |
| University of Kansas Center for Research |
| LASPAU-Fulbright program |
| Agradecimiento |
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| The authors are thankful to Luis Gonzalez and Liliana Iturriaga for the collection and identification of S. acutus. The field work was supported by the ICBG grant 5 UO1 TW000316 from the National Institutes of Health (NIH) to B.N.T., whereas the chemical work was supported by the University of Kansas Center for Research project 2506014-910/099 to B.N.T. J.A. thanks the LASPAU-Fulbright program and the University of Costa Rica for financial support. The contents are solely the responsibilities of the authors and do not necessarily represent the official views of the NIH. |