Larvicidal Activity of Essential Oil Derived from &lt;i&gt;Illicium henryi&lt;/i&gt; Diels (Illiciaceae) Leaf

Liu, Xin Chao; Liu, Qi Yong; Zhou, Ligang; Liu, Zhi Long

doi:10.4314/tjpr.v14i1.16

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…gambiae mosquitoes. Chen et al, 13 determined the larvicidal activity of essential oil derived from Clinopodium gracile aerial parts against the larvae of Ae. Albopictus.…”

Section: Resultsmentioning

confidence: 99%

Untitled

2021

IJPSR

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Mosquitoes are one of the important vectors of various diseases. Repellent activity significantly reduces contact with disease-transmitting mosquitoes. Essential oils have repellent activity that is being potentially developed as an alternative to commercial chemical pesticides. In this study, Lavandula angustifolia was used to evaluate its repellent activity against Ae. Aegypti. The repellent activity of L. angustifolia oil was tested with the 100, 200, 300, 400, and 500 ppm concentrations against the adult mosquitoes of Ae. Aegypti. L. angustifolia showed 100% protection up to 150 minutes against the bite of Ae. aegypti. After that, the repellency was found reduced by the increased exposure periods against Ae. Aegypti. The presence of phytochemicals in oils could be responsible for different mosquitocidal agents. Lavender oil was subjected to GC-MS analysis. It showed the presence of 37 compounds,

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“…gambiae mosquitoes. Chen et al, 13 determined the larvicidal activity of essential oil derived from Clinopodium gracile aerial parts against the larvae of Ae. Albopictus.…”

Section: Resultsmentioning

confidence: 99%

Untitled

2021

IJPSR

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“…Essential oils and their constituents have been recommended as alternative sources for insect control, predominantly because some are selective, biodegrade to nontoxic products, and have minimal impacts on non-target organisms and the environment [ 6 ]. Many essential oils and constituent compounds that come from various essential oils can put forth toxic activity against mosquito species [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. During our screening project for new agrochemicals from the wild plants and Chinese medicinal herbs, essential oil of Echinops grijsii Hance (syn.…”

Section: Introductionmentioning

confidence: 99%

Identification of Larvicidal Constituents of the Essential Oil of Echinops grijsii Roots against the Three Species of Mosquitoes

Zhao

Liu

et al. 2017

Molecules

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The screening of Chinese medicinal herbs for insecticidal principles showed that the essential oil of Echinops grijsii Hance roots possessed significant larvicidal activity against mosquitoes. The essential oil was extracted via hydrodistillation and its constituents were determined by gas chromatography-mass spectrometry (GC-MS) analysis. GC-MS analyses revealed the presence of 31 components, with 5-(3-buten-1-yn-1-yl)-2,2′-bithiophene (5-BBT, 27.63%), α-terthienyl (α-T, 14.95%), 1,8-cineole (5.56%) and cis-β-ocimene (5.01%) being the four major constituents. Based bioactivity-directed chromatographic separation of the essential oil led to the isolation of 5-BBT, 5-(4-isovaleroyloxybut-1-ynyl)-2,2′-bithiophene (5-IBT) and α-T as active compounds. The essential oil of E. grijsii exhibited larvicidal activity against the fourth instar larvae of Aedes albopictus, Anopheles sinensis and Culex pipiens pallens with LC50 values of 2.65 μg/mL, 3.43 μg/mL and 1.47 μg/mL, respectively. The isolated thiophenes, 5-BBT and 5-IBT, possessed strong larvicidal activity against the fourth instar larvae of Ae. albopictus (LC50 = 0.34 μg/mL and 0.45 μg/mL, respectively) and An. sinensis (LC50 = 1.36 μg/mL and 5.36 μg/mL, respectively). The two isolated thiophenes also had LC50 values against the fourth instar larvae of C. pipiens pallens of 0.12 μg/mL and 0.33 μg/mL, respectively. The findings indicated that the essential oil of E. grijsii roots and the isolated thiophenes have an excellent potential for use in the control of Ae. albopictus, An. sinensis and C. pipiens pallens larvae and could be used in the search for new, safer and more effective natural compounds as larvicides.

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