Antifeeding Potency of Neem (&lt;i&gt;Azadirachta indica&lt;/i&gt;) Extractives and Limonoids against Termite (&lt;i&gt;Reticulitermes speratus&lt;/i&gt;)

Serit, Muney; Ishida, Munetaka; Nakata, Katsuyasu; Kim, Mujo; Takahashi, Shigetoshi

doi:10.1584/jpestics.17.4_267

Cited by 12 publications

(5 citation statements)

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“…Gedunin has also been tested against Ostrinia nubilalis, presenting antifeedant activity at 10-50 ppm [77,78]. Reticulitermes speratus presented growth inhibition in the presence of gedunin (PC 95 = 218.4 µg/disc) and of a mixture of limonoids containing gedunin (PC 95 = 0.35% w/w), isolated from a neem oil extract [79,80]. For Helicoverpa armigera, gedunin presented EC 50 between 3.51 and 50.8 ppm and for Spodoptera litura an EC 50 of 40.4 ppm [81,82].…”

Section: Insecticidal Herbicidal Antifeedant and Nematicidal Activitymentioning

confidence: 99%

Biological Activities of Gedunin—A Limonoid from the Meliaceae Family

et al. 2020

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Gedunin is an important limonoid present in several genera of the Meliaceae family, mainly in seeds. Several biological activities have been attributed to gedunin, including antibacterial, insecticidal, antimalarial, antiallergic, anti-inflammatory, anticancer, and neuroprotective effects. The discovery of gedunin as a heat shock protein (Hsp) inhibitor represented a very important landmark for its application as a biological therapeutic agent. The current study is a critical literature review based on the several biological activities so far described for gedunin, its therapeutic effect on some human diseases, and future directions of research for this natural compound.

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Section: Insecticidal Herbicidal Antifeedant and Nematicidal Activitymentioning

confidence: 99%

Biological Activities of Gedunin—A Limonoid from the Meliaceae Family

et al. 2020

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“…Seed kernel neem oil (A. indica) inhibited feeding of Reticulitermes speratus (Kolbe) at a dose of 5.44% and reduced R. speratus survival to 4% after 30 days in a no-choice bioassay (Serit et al, 1992). Ahmed et al (2020) observed that Acacia nilotica sapwood and heartwoods treated with neem oil showed resistance to termite attack of Odontotermes obesus.…”

Section: Introductionmentioning

confidence: 99%

Anti-Termite Activity of Azadirachta excelsa Seed Kernel and Its Isolated Compound against Coptotermes curvignathus

Adfa¹,

Wiradimafan²,

PRATAMA³

et al. 2023

J. Korean Wood Sci. Technol.

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Azadirachta excelsa, is a plant belonging to the same genus as Indian neem (Azadirachta indica), and its use as a pesticide is reported by few studies. Despite being a different species, it is expected to have the same biopesticide potential as A. indica. Therefore, this study aims to investigate the anti-termite activity of n-hexane and methanol extracts of A. excelsa seed kernel at various concentrations against Coptotermes curvignathus. The methanol extract demonstrated greater termicidal activity than n-hexane at doses test of 2%, 4%, and 8%. It also showed 100% termite mortality on the third day of administering the 8% dose. According to the gas chromatography with mass spectrometry data, the putative main components of the n-hexane extract were hexadecanoic acid, ethyl ester (18.99%), 9,12-octadecadienoic acid (Z,Z)-(16.31%), and 9-octadecenal (16.23%). In contrast, the principal constituents of methanol extract were patchouli alcohol (28.1%), delta-guaiene (15.15%), and alpha-guaiene (11.93%). Furthermore, limonoids profiling of A. excelsa methanol extract was determined using Ultrahighperformance liquid chromatography coupled with quadrupole-Orbitrap high-resolution mass spectrometry. The number of limonoids identified tentatively was fifteen, such as 6-deacetylnimbin, nimbolidin C, nimbolide, 6-acetylnimbandiol, 6-deacetylnimbinene, salannol, 28-deoxonimbolide, gedunin, nimbandiol, epoxyazadiradione, azadirone, 2',3'-dihydrosalannin, marrangin, nimbocinol, and azadirachtin. They were the same as those reported in the seed and leaves of A. indica, but its largest component in A. excelsa was 6-deacetylnimbin. As a result, the presence of these compounds may be responsible for the anti-termite activity of A. excelsa seed kernel extract. Additionally, column chromatography of methanol extract yielded 6-deacetylnimbin, which was found to be antifeedant and termiticide against C. curvignathus.

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“…Juss., known as neem, is an evergreen medicinal plant native to India and Myanmar. Neem extract has been reported to be effective against wood infestation by termites, including Reticulitermes speratus Kolbe (Serit et al 1992), and Coptotermes curvignathus Hohngren (Sajap et al 2006). Neem extract is also used as an antibacterial agent against Staphylococcus aureus, Staphylococcus pyogenes, Escherichia coli, and Pseudomonas aeruginosa (El-Mahmood et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Antifungal activity and chemical composition of neem seed extract (Azadirachta indica A.)

Chang

Liu

Zhang

et al. 2021

BioRes

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The antifungal activities and chemical composition of neem seed extract (Azadirachta indica) were investigated. An agar diffusion assay showed that neem seed extract (optimum concentration: 10%) inhibited the growth of Trametes versicolor and Gloeophyllum trabeum. The minimum inhibitory concentration and minimum fungicidal concentration were 2% and 4%, respectively, against the two fungal species. Scanning electron microscopy revealed severe morphological damage to fungal hyphae, including reduction of spores and hyphal shriveling. Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry analyses identified 17 compounds that represented 80.3% of the total extract, including astaxanthin (34.3%), cinobufagin (16.9%), anodendro-side A (6.65%), 16-acetoxy-4,8,14-trimethyl-3,11-dioxo-, methyl ester (5.09%). Furthermore, T. versicolor-infected wood and G. trabeum-infected wood treated with 10% neem seed extract displayed mass decreases of 11.4 ± 5.8% and 25.8 ± 7.5%, respectively, compared with distilled water treatment (21.6 ± 4.2% and 46.9 ± 4.3%, respectively). These findings suggest the potential use of neem seed extract for antifungal wood protection.

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Antifeeding Potency of Neem (<i>Azadirachta indica</i>) Extractives and Limonoids against Termite (<i>Reticulitermes speratus</i>)

Cited by 12 publications

References 0 publications

Biological Activities of Gedunin—A Limonoid from the Meliaceae Family

Biological Activities of Gedunin—A Limonoid from the Meliaceae Family

Anti-Termite Activity of Azadirachta excelsa Seed Kernel and Its Isolated Compound against Coptotermes curvignathus

Antifungal activity and chemical composition of neem seed extract (Azadirachta indica A.)

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