dc.creator | Diaz Napal, Georgina Natalia | |
dc.creator | Carpinella, Maria Cecilia | |
dc.creator | Palacios, Sara Maria | |
dc.date.accessioned | 2017-10-09T20:18:37Z | |
dc.date.accessioned | 2018-11-06T13:42:03Z | |
dc.date.available | 2017-10-09T20:18:37Z | |
dc.date.available | 2018-11-06T13:42:03Z | |
dc.date.created | 2017-10-09T20:18:37Z | |
dc.date.issued | 2009-12 | |
dc.identifier | Diaz Napal, Georgina Natalia; Carpinella, Maria Cecilia; Palacios, Sara Maria; Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound; Elsevier; Bioresource Technology; 100; 14; 12-2009; 3669-3673 | |
dc.identifier | 0960-8524 | |
dc.identifier | http://hdl.handle.net/11336/26277 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1878312 | |
dc.description.abstract | The ethanolic extract from Flourensia oolepis aerial parts showed strong antifeedant activity against the pest larvae, Epilachna paenulata, with an antifeedant index (AI%) of 99.1% at 100 μg/cm2. Based on chromatographic fractionation of the extract, guided by bioassays on E. paenulata, the flavanone pinocembrin (1) was isolated as the most active principle. In a choice assay, compound 1 showed strong antifeedant activity against E. paenulata, Xanthogaleruca luteola and Spodoptera frugiperda with an AI% of 90, 94 and 91% (p < 0.01) respectively, at 50 μg/cm2. The dosages necessary for 50% feeding inhibition of the insects (ED50) were 7.98, 6.13 and 8.86 μg/cm2, respectively. The feeding inhibitory activity of 1 against E. paenulata was compared with the activity of other structurally related flavonoids like naringenin, which was inactive up to 100 μg/cm2, catechin which was nearly 6 times less active than 1, and quercetin which was equally active as 1. The effect of these on the feeding behavior of E. paenulata was also studied. | |
dc.language | eng | |
dc.publisher | Elsevier | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0960852409002193 | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.biortech.2009.02.050 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | FLOURENSIA OOLEPIS | |
dc.subject | ANTIFEEDANT | |
dc.subject | FLAVONOIDS | |
dc.subject | PINOCEMBRIN | |
dc.title | Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |