Insecticidal capacity of polyphenolic seed compounds from neem (<i>Azadirachta indica</i>) on <i>Spodoptera frugiperda</i> (J. E. Smith) larvae

Hernandez-Trejo, Antonia; Rodríguez‐Herrera, Raúl; Sáenz‐Galindo, Aidé; Lopez‐Badillo, C.M.; Flores‐Gallegos, Adriana C.; Ascacio-Valdez, Juan A.; Drouaillet, Benigno Estrada; Osorio-Hernández, Eduardo

doi:10.1080/03601234.2021.2004853

Cited by 5 publications

(3 citation statements)

References 20 publications

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“…Our results corroborate the results of previous studies demonstrating significant toxicity of botanical pesticides including neem (A. indica) and tobacco (N. tabacum) extracts and of non-conventional synthetic insecticides including flubendiamide and spinetoram against different armyworm and other lepidopterous pest species (Nagal and Verma, 2015;Liu et al, 2017;Ayyub et al, 2019;Duarte et al, 2019;Thakur and Srivastava, 2019;Dáder et al, 2020;Phambala et al, 2020;Kong et al, 2021;Hernandez-Trejo et al, 2021;Thakur et al, 2022). Although most of the insect hosts become dead within few days by the bacterial or viral induced spectcima (Lacey, 2017;Soumia et al, 2021) and the observation at 5 th day of bioassay or microbial exposure was enough to see if these are effective against the S. litura larvae.…”

Section: Discussionsupporting

confidence: 91%

Combined Efficacy of Biorational Insecticides against Potato Leafworm Spodoptera litura Fabricius (Lepidoptera: Noctuidae) Under Laboratory and Field Conditions

Ahmad¹,

Afzal²,

Feng³

et al. 2023

PUJZ

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Armyworm species Spodoptera litura Fabricius (Lepidoptera: Noctuidae) is one of the destructive polyphagous insect pests worldwide and has attained field-evolved resistance to most of the conventional synthetic insecticides. In this study, some previously selected most effective biorational synthetic, botanical and microbial insecticidal formulations were evaluated either alone or in binary combinations against 3 rd instar larvae of S. litura under laboratory and then under the field conditions. In both trials, insecticidal treatments affected significantly the mean mortality or reduction of S. litura larvae recorded both at two and five days posttreatment. In laboratory bioassay, combinations of flubendiamide and A. indica, flubendiamide and N. tabacum and of spinetoram and A. indica formulations caused significantly high mortality (100%), followed by B. thuringensis and S. litura-NPV (94.92%) and A. indica and B. thuringensis (93.22%) and exhibited a synergized toxicity against S. litura larvae as compared to other treatments. In two years field trials, binary combination of flubendiamide and spinetoram showed an average larval reduction of 59 -100%, followed by 100% larval reduction exhibited by flubendiamide and spinetoram alone and by the combination of flubendiamide and A. indica formulations at 5 th day of application. While, minimum larval reduction was recorded for both microbial insecticides alone and in combination for both years. Overall results of this in-vitro and in-situ evaluation demonstrate the effectiveness of biorational insecticidal formulations and recommend their incorporation in integrated management of S. litura.Novelty Statement | Laboratory and then field evaluations of some promising botanical, microbial and non-conventional synthetic insecticidal formulations against 3 rd instar larvae of armyworm (Spodoptera litura) comprise the novelty of this study.

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Section: Discussionsupporting

confidence: 91%

Combined Efficacy of Biorational Insecticides against Potato Leafworm Spodoptera litura Fabricius (Lepidoptera: Noctuidae) Under Laboratory and Field Conditions

Ahmad¹,

Afzal²,

Feng³

et al. 2023

PUJZ

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“…The insecticidal activity varies according to the environmental conditions and the genetic variety of the neem due to the variation in the composition of phytochemicals [ 33 ]. Nevertheless, insecticidal activity is affected by environmental factors that decrease its bioactivity.…”

Section: Discussionmentioning

confidence: 99%

The Insecticidal Activity of Azadirachta indica Leaf Extract: Optimization of the Microencapsulation Process by Complex Coacervation

Michel

Aguilar‐Zárate

Rojas

et al. 2023

Plants

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The objective of the present work was to optimize the microencapsulation conditions of neem (Azadirachta indica A. Juss) leaf extracts for the biocontrol of Tenebrio molitor. The complex coacervation method was used for the encapsulation of the extracts. The independent factors considered were the pH (3, 6, and 9), pectin (4, 6, and 8% w/v), and whey protein isolate (WPI) (0.50, 0.75, and 1.00% w/v). The Taguchi L9 (33) orthogonal array was used as the experimental matrix. The response variable was the mortality of T. molitor after 48 h. The nine treatments were applied by immersion of the insects for 10 s. The statistical analysis revealed that the most influential factor on the microencapsulation was the pH (73% of influence), followed by the pectin and WPI (15% and 7% influence, respectively). The software predicted that the optimal microencapsulation conditions were pH 3, pectin 6% w/v, and WPI 1% w/v. The signal-to-noise (S/N) ratio was predicted as 21.57. The experimental validation of the optimal conditions allowed us to obtain an S/N ratio of 18.54, equivalent to a T. molitor mortality of 85 ± 10.49%. The microcapsules had a diameter ranging from 1–5 μm. The microencapsulation by complex coacervation of neem leaf extract is an alternative for the preservation of insecticidal compounds extracted from neem leaves.

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“…The use of different solvents varies in the type of compounds extracted as well as the amount, which makes the difference in obtaining these [33]. Solvents with water allow the extraction of different compounds like ellagitannins [34]. Been reported some ellagitannins in extracts from E. camaldulensis with acetone: water, highlighting HHDP-glucopyranose, as well as galloyl-HHDP-glucopyranose positional isomers, pedunculagin, tellimagrandin I, and ellagitannins dimers.…”

Section: Ellagitannins In E Camaldulensismentioning

confidence: 99%

Ellagitannins from Eucalyptus camaldulensis and their potential use in the food industry

Sánchez-Loredo,

Sepúlveda,

Wong-Paz

et al. 2024

Explor Foods Foodomics

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Plants play a key role in the treatment and prevention of diseases since ancient times. Eucalyptus has been traditionally used in the treatment of conditions related to the respiratory system, such as flu, colds, sore throats, bronchitis, as well as neuralgia, and stiffness. Eucalyptus camaldulensis has several phytoconstituents such as ellagitannins endowed with bioactivity, including antioxidant and inhibitory potential on various microorganisms causing foodborne diseases. Tellimagrandin I, pedunculagin, castalagin/vescalagin are among the most representative and have activity against pathogens such as Staphylococcus aureus, Escherichia coli, Listeria monocytogenes, and Bacillus cereus. These antioxidant ellagitannins may have potential application in the food, pharmaceutical, and cosmetic industries. The main industrial uses of E. camaldulensis are related to the production of wood, paper, and charcoal, with its leaves and branches considered by-products from these industrial activities. However, these plant by-products could be used to obtain bioactive compounds for the development of new and improved consumer goods. Therefore, the aim of this work was to review the main ellagitannins of E. camaldulensis and their antioxidant and antibacterial activities in foodborne microorganisms, as well as the relevance that these compounds may have in the food industry and related sectors.

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Insecticidal capacity of polyphenolic seed compounds from neem (Azadirachta indica) on Spodoptera frugiperda (J. E. Smith) larvae

Cited by 5 publications

References 20 publications

Combined Efficacy of Biorational Insecticides against Potato Leafworm Spodoptera litura Fabricius (Lepidoptera: Noctuidae) Under Laboratory and Field Conditions

Combined Efficacy of Biorational Insecticides against Potato Leafworm Spodoptera litura Fabricius (Lepidoptera: Noctuidae) Under Laboratory and Field Conditions

The Insecticidal Activity of Azadirachta indica Leaf Extract: Optimization of the Microencapsulation Process by Complex Coacervation

Ellagitannins from Eucalyptus camaldulensis and their potential use in the food industry

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