Chemical Constituents and Insecticidal Activity of the Essential Oils Extracted from Artemisia giraldii and Artemisia rubripes against Two Stored Product Insects

The thrips, Frankliniella schultzei, and green peach aphid, Myzus persicae, cause direct damage to plants of economic importance and transmit phytoviruses, causing large economic losses. Chemical constituents of essential oils present a wide range of biological activities. The aim of this work was to evaluate insecticidal activity of essential oil from citronella grass, Cymbopogon winterianus, on F. schultzei and M. persicae. This essential oil was obtained by steam distillation and components were identified by GC/FID and GC/MS. A Potter spray tower was used to spray insects with the essential oil. The major constituents are geraniol (28.62%), citronellal (23.62%) and citronellol (17.10%). Essential oil of C. winterianus at 1% (w v-1) causes mortality in F. schultzei and M. persicae at 34.3% and 96.9%, respectively. The LC50 value for M. persicae was 0.36% and LC90 0.66%. Thus, citronella grass essential oil at 1% (w v-1) is more toxic to M. persicae than F. schultzei. This essential oil shows promise for developing pesticides to manage M. persicae.

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Comparison of chemical constituents and antimicrobial activities of three essential oils from three different brands' clove samples collected from Gulf region

Asian Pacific Journal of Tropical Disease ◽

10.1016/s2222-1808(14)60570-3 ◽

2014 ◽

Vol 4 (4) ◽

pp. 262-268 ◽

Cited By ~ 24

Author(s):

Mohammad Amzad Hossain ◽

Saliha Rashid AL Harbi ◽

Afaf Mohammed Weli ◽

Qasim Al-Riyami ◽

Jamal Nasser Al-Sabahi

Keyword(s):

Essential Oils ◽

Chemical Constituents ◽

Antimicrobial Activities ◽

Gulf Region

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Conifer Essential Oils Reversed Amyloid Beta1-42 Action by Modulating BDNF and ARC Expression in The Rat Hippocampus

CNS & Neurological Disorders - Drug Targets ◽

10.2174/1871527320666210303111537 ◽

2021 ◽

Vol 20 ◽

Author(s):

Paula Alexandra Postu ◽

Adrian Tiron ◽

Crina Elena Tiron ◽

Dragoș Lucian Gorgan ◽

Marius Mihasan ◽

...

Keyword(s):

Essential Oils ◽

Dna Fragmentation ◽

Rat Model ◽

Pinus Halepensis ◽

Chemical Constituents ◽

Gene Expressions ◽

Bdnf Expression ◽

Neuroprotective Effects ◽

Positive Effects ◽

Cognitive Improvement

Background: The conifer species Pinus halepensis (Pinaceae) and Tetraclinis articulata (Cupressaceae) are widely used in traditional medicine due to their health beneficial properties. Objective: This study aimed to investigate the mechanisms by which P. halepensis and T. articulata essential oils (1% and 3%) could exhibit neuroprotective effects in an Alzheimer's disease (AD) rat model, induced by intracerebroventricular (i.c.v.) administration of amyloid beta1-42 (Aβ1-42). Method: The essential oils were administered by inhalation to the AD rat model, once daily, for 21 days. DNA fragmentation was assessed through Cell Death Detection ELISA kit. Brain-derived neurotrophic factor (BDNF), activity-regulated cytoskeleton-associated protein (ARC) and interleukin-1β (IL-1β) gene expressions were determined by RT-qPCR analysis, while BDNF and ARC protein expressions were assessed using immunohistochemistry technique. Results: Our data showed that both essential oils substantially attenuated memory impairments, with P. halepensis mainly stimulating ARC expression and T. articulata mostly enhancing BDNF expression. Also, the inhalation of essential oils reduced IL-1β expression and induced positive effects against DNA fragmentation associated with Aβ1-42-induced toxicity, further contributing to the cognitive improvement in the rats with AD-like model. Conclusion: Our findings provide further evidence that these essential oils and their chemical constituents could be natural agents of therapeutic interest against Aβ1-42-induced neurotoxicity.

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Monoterpenes: chemistry, insecticidal activity against stored product insects and modes of action—a review

International Journal of Pest Management ◽

10.1080/09670874.2021.1982067 ◽

2021 ◽

pp. 1-23

Author(s):

Samir A. M Abdelgaleil ◽

Hassan A. Gad ◽

Gomaa R. M. Ramadan ◽

Ahmed M. El-Bakry ◽

Ahmed M. El-Sabrout

Keyword(s):

Insecticidal Activity ◽

Stored Product Insects ◽

Modes Of Action

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Constituents of Peel and Leaf Essential Oils of Citrus Medica L

Journal of Scientific Research ◽

10.3329/jsr.v1i2.1760 ◽

2009 ◽

Vol 1 (2) ◽

pp. 387-392 ◽

Cited By ~ 13

Author(s):

M. N. I. Bhuiyan ◽

J. Begum ◽

P. K. Sardar ◽

M. S. Rahman

Keyword(s):

Gas Chromatography ◽

Essential Oil ◽

Essential Oils ◽

Mass Spectroscopy ◽

Chemical Constituents ◽

Citrus Medica ◽

Leaf Oil ◽

Gas Chromatography Mass Spectroscopy ◽

Total Oil ◽

Peel Oil

The chemical constituents of leaf and peel essential oil of Citrus medica L. were analysed by gas chromatography mass spectroscopy (GC-MS). Nineteen components accounting for 99.9% of the oil were identified in leaf oil. The major constituents are erucylamide (28.43%), limonene (18.36%) and citral (12.95%). The peel oil contains forty three components accounting for 99.8% of the total oil and the major components are isolimonene (39.37%), citral (23.12%) and limonene (21.78%). Keywords: Citrus medica; Essential oils; GC-MS; Erucylamide; Isolimonene. © 2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.DOI: 10.3329/jsr.v1i2.1760

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