Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound

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 flavanon...

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Autores principales: Díaz Napal, Georgina, Carpinella, María Cecilia, Palacios, Sara María
Formato: Artículo
Lenguaje:Español
Publicado: 2009
Materias:
QD Química
Acceso en línea:http://pa.bibdigital.ucc.edu.ar/4935/1/A_Diaz.pdf
Aporte de:
Producción Académica Universidad Católica de Córdoba (UCCor) de Universidad Católica de Córdoba
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spelling I38-R144-49352025-10-15T13:16:45Z http://pa.bibdigital.ucc.edu.ar/4935/ Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound Díaz Napal, Georgina Carpinella, María Cecilia Palacios, Sara María QD Química 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. 2009-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/closedAccess application/pdf spa http://pa.bibdigital.ucc.edu.ar/4935/1/A_Diaz.pdf Díaz Napal, Georgina ORCID: https://orcid.org/0000-0003-2440-2488 <https://orcid.org/0000-0003-2440-2488>, Carpinella, María Cecilia ORCID: https://orcid.org/0000-0001-5553-1851 <https://orcid.org/0000-0001-5553-1851> and Palacios, Sara María (2009) Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound. Bioresource Technology, 100 (14). pp. 3669-3673. ISSN 09608524 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.biortech.2009.02.050
institution Universidad Católica de Córdoba
institution_str I-38
repository_str R-144
collection Producción Académica Universidad Católica de Córdoba (UCCor)
language Español
orig_language_str_mv spa
topic QD Química
spellingShingle QD Química
Díaz Napal, Georgina
Carpinella, María Cecilia
Palacios, Sara María
Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound
topic_facet QD Química
description 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.
format Artículo
author Díaz Napal, Georgina
Carpinella, María Cecilia
Palacios, Sara María
author_facet Díaz Napal, Georgina
Carpinella, María Cecilia
Palacios, Sara María
author_sort Díaz Napal, Georgina
title Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound
title_short Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound
title_full Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound
title_fullStr Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound
title_full_unstemmed Antifeedant activity of ethanolic extract from Flourensia oolepis and isolation of pinocembrin as its active principle compound
title_sort antifeedant activity of ethanolic extract from flourensia oolepis and isolation of pinocembrin as its active principle compound
publishDate 2009
url http://pa.bibdigital.ucc.edu.ar/4935/1/A_Diaz.pdf
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