Chemical Composition and Insecticidal Activities of the Essential Oil from <i>Caryopteris incana</i> (Thunb. ex Hout.) Miq. Aerial Parts

Gao, Guo Wei; Yin, Zhe; Hou, Zheng; Li, Jin Ping; Sun, Bei Bei; Dong, Min

doi:10.1080/0972060x.2020.1796821

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…T A B L E 3 Lethal concentration of Ocimum americanum on different solvent extracts against Aedes aegypti (24 h after treatment) wide range of compounds. Insecticidal compounds such as eucalyptol, camphor, myrtenol, caryophyllene, and calarene are known to be highly toxic to insects (Gao et al, 2020;Govindarajan et al, 2016;Luo et al, 2022;Tabanca et al, 2011). Murugan et al (2007) evaluated the larvicidal activity of Ocimum basilicum against A. aegypti.…”

Section: T a B L E 1 Gc-ms Analysis Of Hexane Extract Of Ocimum Ameri...mentioning

confidence: 99%

Toxicity of Ocimum americanum L. extracts against Aedes aegypti larvae (Diptera: Culicidae) and their impact on insecticide resistance

Ramachandran

Deepika

Jayakumar

2022

Arch Insect Biochem Physiol

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Mosquitoes are a key threat to millions of people worldwide. They spread the pathogens that cause deadly diseases among humans and animals. Synthetic pesticides are the best agents to control mosquitoes, but they cause several problems for the environment as well as public health. Continuous usage of commonly available insecticides develops multiple resistances among pests. In search of alternatives to synthetic pesticides, botanicals could be one of the best alternatives to control mosquitoes. The present study explores the insecticidal activity of Ocimum americanum against Aedes aegypti larvae and their effect on detoxification enzymes. Leaves of O. americanum were sequentially extracted using hexane, chloroform, and methanol. Among these, hexane extract showed 100% larvicidal activity at 1 g/L concentration for 24 h and the LC50 value was 0.3 g/L. The phytochemical screening of hexane extract was performed through gas chromatography‐mass spectrometry analysis, which showed 27 compounds. The major compounds are squalene (13.03%), camphor (9.77%), and 1‐Iodohexadecane (8.02%). The toxicity of active hexane extract was tested against third instar larvae of Chironomus costatus (nontarget organism). Results revealed less toxicity (12.2%) at 1 g/L concentration on the nontarget organism. The enzyme activity of acetylcholinesterase and β‐carboxylesterase was significantly inhibited by the hexane extract. The present study reveals the insecticidal potential of O. americanum with minimum effects on nontarget organisms. The O. americanum extract inhibited the activity of A. aegypti's major insecticide‐resistant enzymes. O. americanum could be one of the best alternatives to controlling mosquitoes.

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Section: T a B L E 1 Gc-ms Analysis Of Hexane Extract Of Ocimum Ameri...mentioning

confidence: 99%

Toxicity of Ocimum americanum L. extracts against Aedes aegypti larvae (Diptera: Culicidae) and their impact on insecticide resistance

Ramachandran

Deepika

Jayakumar

2022

Arch Insect Biochem Physiol

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Pistacia lentiscus essential oil and its pure active components as acaricides to control Dermanyssus gallinae (Acari: Mesostigmata)

Alimi,

Hajri,

Jallouli

et al. 2023

Veterinary Parasitology

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First investigation of the chemical composition, antioxidant, antimicrobial and larvicidal activities of the essential oil of the subspecies Ononis angustissima Lam. subsp. filifolia Murb.

Benmeddour,

Messaoudi,

Flamini

2024

Natural Product Research

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This study is the first to explore the essential oil of Ononis angustissima Lam. subsp. filifolia Murb., a subspecies growing in the Algerian northeastern Sahara. The chemical composition was evaluated by GC/GC-EIMS. Antioxidant activity was evaluated using two methods.Thirty-four (91.6%) individual components were identified. The main constituents were linalool (12.6%), hexahydrofarnesylacetone (8.4%), β-eudesmol (6.6%), α-cadinol (6.4%), and T-cadinol (6.1%). The findings provide a chemical basis for understanding relationships between North African subspecies, supporting botanical and genetic classification. The oil exhibited moderate scavenging activity against DPPH radicals (IC 50 =102.30 µg/ml) and high activity in the β-carotene bleaching assay (91.346%). Antimicrobial tests revealed effectiveness against Gram-positive bacteria (Staphylococcus aureus ATCC 25923 and ATCC 43300), limited impact on Gram-negative bacteria (Pseudomonas aeruginosa ATCC 27853 and Escherichia coli ATCC 25922), and good inhibition against Aspergillus niger and Scedosporium apiospermum. A notable larvicidal activity was observed against Date Moth, particularly on L2 larvae.

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Chemical Composition and Insecticidal Activities of the Essential Oil from Caryopteris incana (Thunb. ex Hout.) Miq. Aerial Parts

Cited by 3 publications

References 27 publications

Toxicity of Ocimum americanum L. extracts against Aedes aegypti larvae (Diptera: Culicidae) and their impact on insecticide resistance

Toxicity of Ocimum americanum L. extracts against Aedes aegypti larvae (Diptera: Culicidae) and their impact on insecticide resistance

Pistacia lentiscus essential oil and its pure active components as acaricides to control Dermanyssus gallinae (Acari: Mesostigmata)

First investigation of the chemical composition, antioxidant, antimicrobial and larvicidal activities of the essential oil of the subspecies Ononis angustissima Lam. subsp. filifolia Murb.

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