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dc.creatorFuentes Gándara, Fabio Armando
dc.creatorTorres, Ascension
dc.creatorFernández Ponce, M. T.
dc.creatorCasas, L.
dc.creatorMantell Serrano, Casimiro
dc.creatorVarela, Rosa Maria
dc.creatorMartinez De La Ossa Fernandez, E. J
dc.creatorMacias, Francisco A.
dc.date.accessioned2018-11-17T20:03:17Z
dc.date.available2018-11-17T20:03:17Z
dc.date.issued2019
dc.identifier.issn08968446
dc.identifier.urihttp://hdl.handle.net/11323/1275
dc.description.abstractThe allelopathic potential of Helianthus annuus L. leaves was study based on bio-directed chemical fractionation approach. Aerial parts of H. annuus were extracted by means of SFE using supercritical carbon dioxide (scCO2) and ESE using CO2+50% EtOH/H2O (varying ethanol in water from 0 to 100%). Extractions were carried out at 400 bar, 55 °C, 20 g/min and for 4 h. Then, extracts were fractionated in three separators at the following conditions: S1: 200 bar/45 °C; S2: 90 bar/40 °C; and S3: 1 atm/30 °C. ESE obtained higher overall yields than scCO2 and the use of water as cosolvent (CO2+50% H2O) resulted in a S3 fraction free from chlorophylls and rich in bioactive compounds. 14 compounds, including fatty acids, terpenes, flavonoids and heliannuols, were isolated from this fraction. After performing the bioassay on pure compounds, heliannuol D, tambulin, pinoresinol and sesquiterpene 10-oxo-isodauc-3-en-15-al showed the most effective inhibitor profiles.es_CO
dc.language.isoengen_US
dc.publisherJournal Of Supercritical Fluidsen_US
dc.relation.ispartofDOI: 10.1016/j.supflu.2018.08.004en_US
dc.rightsAtribución – No comercial – Compartir igualen_US
dc.subjectAllelopathyen_US
dc.subjectEnhanced Solvent Extractionen_US
dc.subjectFractionationen_US
dc.subjectHelianthus Annusen_US
dc.subjectSupercritical Fluidsen_US
dc.titleSelective Fractionation And Isolation Of Allelopathic Compounds From Helianthus Annuus L. Leaves By Means Of High-Pressure Techniquesen_US
dc.typeArticleen_US


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