Results 1 to 10 of about 2,787 (117)

Nanotechnology-Based Bioactive Antifeedant for Plant Protection

open access: yesNanomaterials, 2022
The productivity of vegetable crops is constrained by insect pests. The search for alternative insect pest control is becoming increasingly important and is including the use of plant-derived pesticides. Plant-derived pesticides are reported as effective
I Made Joni   +2 more
exaly   +3 more sources

Novel Insect Antifeedant and Ixodicidal Nootkatone Derivatives

open access: yesBiomolecules, 2019
Naturally occurring nootkatone, with reported insecticidal and acaricidal properties, has been used as a lead to generate molecular diversity and, consequently, new insect antifeedant and ixodicidal compounds.
Azucena Gonzalez-Coloma   +2 more
exaly   +3 more sources

Antifeedant, antifungal and nematicidal compounds from the endophyte Stemphylium solani isolated from wormwood [PDF]

open access: yesScientific Reports
The continuous search for natural product-based biopesticides from fungi isolated from untapped sources is an effective tool. In this study, we studied a pre-selected fungal endophyte, isolate Aa22, from the medicinal plant Artemisia absinthium, along ...
Carmen E. Diaz   +6 more
doaj   +2 more sources

Insect antifeedant potent 9H-fluorenacylbromides [PDF]

open access: yesQScience Connect, 2013
Background: Attempts to produce greener bromination of 2-acetyl 9H-fluorene with KBr+KBrO3 reagent using fly-ash:H2O catalyst in aqueous media gave 9H-fluorenacylbromides.
G. Thirunarayanan
doaj   +1 more source

Insect Antifeedant Benzofurans from Pericallis Species

open access: yesMolecules, 2023
In this work, we have studied the benzofurans of Pericallis echinata (aerial parts and transformed roots), P. steetzii (aerial parts and transformed roots), P. lanata (aerial parts), and P. murrayi (aerial parts and roots).
Carmen E. Díaz   +6 more
doaj   +1 more source

Acaricidal and Insect Antifeedant Effects of Essential Oils From Selected Aromatic Plants and Their Main Components

open access: yesFrontiers in Agronomy, 2021
This work has demonstrated the ixodicidal and insect antifeedant effects of essential oils from 14 experimentally cultivated aromatic plants. The strong ixodicidal and antifeedant oils corresponded to Thymus zygis, Thymus vulgaris, Satureja montana ...
Félix Valcárcel   +5 more
doaj   +1 more source

Isolation of Ethyl p-Methoxycinnamate from Azadirachta indica Root Bark as Hong Kong Caterpillar (Tenebrio molitor) Antifeedant

open access: yesIndonesian Journal of Chemistry, 2021
This study aims to identify the antifeedant activity of Azadirachta indica A. Juss root bark against Hong Kong caterpillar (Tenebrio molitor). A. indica A. root was macerated in n-hexane, ethyl acetate, and methanol.
Rosnani Nasution   +4 more
doaj   +1 more source

ISOLATION OF AN ANTIFEEDANT TRITERPENOID FROM THE SEED OF Barringtonia asiatica

open access: yesIndonesian Journal of Chemistry, 2010
An antifeedant triterpenoid saponin has been isolated from the seed of Barringtonia asiatica and its structure elucidated mainly by two dimensional NMR spectroscopy is identified as 3-O-{[β-D-galactopyranosyl(1→3)-β-D-glucopyranosyl (1→2)]-β-D ...
Emma J Pongoh   +4 more
doaj   +1 more source

Selective Extraction of Bioactive Phenylethanoids from Digitalis obscura

open access: yesPlants, 2021
Cardenolide-free extracts from Digitalis obscura showed significant antifeedant effects against the aphid Myzus persicae and this activity correlated with their phenylethanoid content. The content in phenylethanoids of Digitalis obscura has been studied.
José Francisco Quílez del Moral   +6 more
doaj   +1 more source

Photooxygenation of Nimonol, a Tetranortriterpenoid from Azadirachta indica. A. Juss.

open access: yesMolecules, 2002
Nimonol (1), a tetranortriterpenoid isolated from the leaves of Azadirachta indica A. Juss (Meliaceae), upon photolysis undergoes both Diels-Alder and ene reactions with singlet oxygen at different sites leading to 14,15,20,21-diepoxy-23-nimonolactone (3)
V. Kasinath   +2 more
doaj   +1 more source

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