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Métabolites non polaires bioactifs provenant de plantes indigènes d’Argentine

Métabolites non polaires bioactifs provenant de plantes indigènes d’Argentine

Andrea Mabel Sosa / Elena Cartagena / Ricardo Federico Laime

59,39 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2022
Materia
Química
ISBN:
9786205396230
59,39 €
IVA incluido
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Les insectes sont l’un des principaux ravageurs des céréales stockées et de leurs sous-produits. La nécessité de les contrôler jusqu’à leur élimination totale conduit à l’utilisation incorrecte d’insecticides chimiques. Une alternative écologiquement plus sûre est l’application de métabolites secondaires de plantes pour leur contrôle. Les auteurs ont étudié l’activité répulsive et/ou insecticide des métabolites de faible polarité isolés de trois espèces indigènes : Merremia dissecta (Jacq.) Hallier f., Lepidaploa remotiflora Rich. et Adiantum lorentzii Hieron. contre les grains stockés et les ravageurs des cultures. Les extraits des espèces étudiées ont été analysés par chromatographie sur couche mince et par chromatographie en phase gazeuse couplée à la spectrométrie de masse, en déterminant la présence de composés triterpéniques (TTP) dans le profil GC-EI-MS. Les fractions enrichies en TTP ont montré une activité prometteuse contre Tribolium castaneum Herbst et Armadillidium vulgare L., des parasites cosmopolites d’importance économique et sanitaire. Les résultats rapportés sont sans précédent et contribuent à la prospection et au développement de biorépulseurs sélectifs ayant un impact environnemental moindre.

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