Chemical composition and mosquito repellent activity of the essential oil of Plectranthus incanus link

The chemical composition of the essential oil obtained from the leaves of Plectranthus incanus Link, with the yield of 0.6% (w/v), was analyzed by GC and GC/MS. A total of 16 constituents, representing 95.2% of the oil, were identified. The major components of the oil were fenchone (6.0%), piperitone oxide (32.4%), piperitenone (3.0%) and piperitenone oxide (41.5%). The repellent activity of the volatile oil at different concentrations was measured by the protection period against the bites of Anopheles stephensi and Culex fatigans. The tested oil had stronger repellent activity than citronella oil, which was used as a positive control. LC50 (30 min) for P. incanus oil against An. stephensi and C. fatigans were 23.8 and 19.6 ?l/L air, respectively, whereas LC50 of citronella oil were 31.7 and 31.0 ?l/L air. Thus, P. incanus may be regarded as a potential valuable source of chemicals that have strong mosquito repellent activity, and could be used for the preparation of mosquito repellent formulations.

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Lantana montevidensis Essential Oil: Chemical Composition and Mosquito Repellent Activity against Aedes aegypti

Natural Product Communications ◽

10.1177/1934578x1601101122 ◽

2016 ◽

Vol 11 (11) ◽

pp. 1934578X1601101 ◽

Cited By ~ 2

Author(s):

Eugene K. Blythe ◽

Nurhayat Tabanca ◽

Betul Demirci ◽

Maia Tsikolia ◽

Jeffrey R. Bloomquist ◽

...

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Aedes Aegypti ◽

Positive Control ◽

Repellent Activity ◽

Effective Dosage ◽

Mosquito Repellent ◽

Plant Parts ◽

Sesquiterpene Hydrocarbons

The essential oil (EO) of Lantana montevidensis (Spreng.) Briq. (L. sellowiana Link & Otto) was investigated for its chemical composition and mosquito repellent activity. The essential oil obtained by hydrodistillation of aerial plant parts was analyzed by GC-FID and GC-MS. The major constituents were β-elemene (22.0%), β-caryophyllene (20.1%), and germacrene D (9.4%). Sesquiterpene hydrocarbons were present in considerable quantities (78.9%) in the L. montevidensis EO, followed by oxygenated sesquiterpenes (8.9%), monoterpene hydrocarbons (7.7%), oxygenated monoterpenes (1.9%), diterpenes (1.2%) and other compounds (0.2%). The oil of L. montevidensis was repellent with a minimum effective dosage (MED) of 0.021 ± 0.013 mg/cm2 as compared with that of the positive control N,N-diethyl-3-methylbenzamide (DEET) with a MED of 0.006 ± 0.001 mg/cm2) against Aedes aegypti L. The major compound β-elemene was tested individually for its repellency and had a MED value of 0.23 ± 0.14 mg/cm2 (DEET was 0.008 ± 0.001 mg/cm2). This is the first report on the repellent activity of L. montevidensis EO and β-elemene using human-based in vivo assays against Ae. aegypti.

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Chemical Composition and Repellent Activity against Mosquito Aedes Aegypti of Pelargonium radula, Syzygiumaromaticum and Citrus aurantifolia Essential Oils

Materials Science Forum ◽

10.4028/www.scientific.net/msf.981.253 ◽

2020 ◽

Vol 981 ◽

pp. 253-257

Author(s):

Hazrulrizawati Abd Hamid ◽

Nishantini Silvarajoo ◽

Nurulhusna Ab. Hamid

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Aedes Aegypti ◽

Essential Oils ◽

Dengue Fever ◽

Yellow Fever ◽

Repellent Activity ◽

Mosquito Repellent ◽

Citrus Aurantifolia ◽

Frequent Use

The mosquito Aedes aegypti is an epidemic vector of several diseases such as dengue fever and yellow fever. Several pesticides are used to control the mosquito population. Because of their frequent use, some mosquitoes have developed resistance. In the present study, we evaluated the synergistic mosquito-repellent activity of essential oils from Pelargonium radula, Syzgium aromaticum and Citrus aurantifolia against Aedes aegypti by using Y-tube olfactometer. The oils was subsequently analyzed by using GC–MS. These results clearly reveal that the essential oil of C. aurantifolia served as the most potent repellent agent against Aedes aegypti . The results indicate that three constituents; limonene (19.58%) followed by β–pinene (17.12%), geraniol (13.23%) which comprise a large proportion of the C. aurantifolia are likely responsible for the observed repellent activity.

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Chemical composition, antioxidant and antibacterial activities of essential oil of Curcuma phaeocaulis Valeton

Bangladesh Journal of Botany ◽

10.3329/bjb.v49i3.49621 ◽

2020 ◽

Vol 49 (3) ◽

pp. 531-540

Author(s):

Heng Liang ◽

Qian Wang ◽

Chunbang Ding ◽

Li Zhang ◽

Ruiwu Yang

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Aerial Part ◽

Antioxidant Properties ◽

Volatile Oil ◽

Antibacterial Activities ◽

Antibacterial Action ◽

Underground Part ◽

Baseline Study ◽

Further Development

Chemical composition, antioxidant and antibacterial activities of the essential oil of Curcuma phaeocaulis were analysed. In the aerial part, 22 compounds account for 69.23% of the total essential oil and authenticated, while in the underground part, 32 compounds account for 84.28% of the total essential oil and authenticated. Among the compounds detected, α-pinene, camphene, eucalyptol, camphor, borneol, β- tumerone, epi-curzerenone were the main compounds of volatile oil in both parts of Curcuma phaeocaulis. In addition, various lipid antioxidant properties by peroxidation assays, inoxidizability and antibacterial action were assessed. The result may be considered as a baseline study for the further development and application of Curcuma phaeocaulis.

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Chemical Composition and Antibacterial Activity of Essential oil from Salvia mukerjeei

Natural Product Communications ◽

10.1177/1934578x1100601239 ◽

2011 ◽

Vol 6 (12) ◽

pp. 1934578X1100601 ◽

Cited By ~ 1

Author(s):

Lalit Mohan ◽

Anuradha Negi ◽

Anand B. Melkani ◽

Vasu Dev

Keyword(s):

Antibacterial Activity ◽

Chemical Composition ◽

Agrobacterium Tumefaciens ◽

Essential Oil ◽

Volatile Oil ◽

Erwinia Chrysanthemi ◽

Bacterial Strains ◽

Capillary Gc ◽

Aerial Parts ◽

Sesquiterpene Hydrocarbons

The composition of steam volatile oil from aerial parts of Salvia mukerjeei Bennet & Raizada (Lamiaceae) was analyzed by capillary GC and GCMS. The oil was rich in sesquiterpene hydrocarbons (67.3%). Among 71 identified constituents representing 91.7% of the oil, β-caryophyllene (28.7%), γ-muurolene (15.5%) and dehydro-aromadendrane (9.5%), were the principal constituents. The oil was tested against ten bacterial strains and was active against Enterococcus faecalis, Erwinia chrysanthemi and Agrobacterium tumefaciens.

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Chemical Composition and Repellency of Cinnamomum japonicum Leaf-Derived Essential Oil against Aedes albopictus

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.295-298.35 ◽

2013 ◽

Vol 295-298 ◽

pp. 35-38 ◽

Cited By ~ 2

Author(s):

Ying Hui Peng ◽

Li Juan Jiang ◽

Li Wang ◽

Yu Duo Lu ◽

Kai Yu ◽

...

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Aedes Albopictus ◽

Chemical Components ◽

Mosquito Repellent ◽

Main Components

The repellent activitie of Cinnamomum japonicum oil against Aedes albopictus were investigated. The main volatile chemical components of the oil were qualitatively studied. The main results are given as follows. Cinnamomum japonicum oil providing absolute protection against Ae. albopictus in laboratory and field for 2.33 ± 0.63 h, 3.85 ± 0.21 h at concentration of 1.5 mg/cm2, respectively. A total of 28 compounds were identified. The main components of the essential oil were borneoll (28.30%), 1,8-cCineole (20.98%), (-)-bBornyl acetate (6.65%), linalool (5.94%), (-)-.alpha.-terpinol (5.87%), caryophyllene oxlde (5.11%). The results indicates that Cinnamomum japonicum oil has a great potential to be developed into a ecofriendly mosquito repellent.

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Repellent activity of essential oils isolated from the leaves of Eupatorium odoratum against malaria, filaria and dengue vectors

Environment Conservation Journal ◽

10.36953/ecj.2013.141203 ◽

2013 ◽

Vol 14 (1&2) ◽

pp. 21-25

Author(s):

M. F. Alam

Keyword(s):

Essential Oil ◽

Aedes Aegypti ◽

Essential Oils ◽

Anopheles Stephensi ◽

Mosquito Species ◽

Repellent Activity ◽

Complete Protection ◽

Protection Measure ◽

Human Volunteers ◽

Dengue Vectors

Light green essential oils extracted from the leaves of Eupatorium odoratum (Asterace) from Himalaya region (India) were screened for repellent activity against Anopheles stephensi, Aedes aegypti and Culex quinquifaciatus mosquitoes. The repellent activity was evaluated in door condition. Four concentrations 2.5%, 5%, 7.5% and 10% (v/v) in ethanol were considered in this study. When the test oil was applied at 10% concentration were found most effective and provided more than 2hr of complete protection against all three mosquito species. The complete protection time (Mean ± S.D) were recorded as 160.2 ± 2.77min, 139.4 ± 1.14min and 125.6 ± 3.13min against Anopheles stephensi, Aedes aegypti and Culex quinquifaciatus respectively. There was no bite within 125min and 160min confirm due to action of essential oil and thus 100% protection from the bite of mosquitoes achieved. No adverse effects of the human volunteers were observed during the exposure and through three months after the application.Therefore, the essential oil of Eupatorium odoratum (Asterace) may prove useful in the development of mosquito natural repellents as an effective personal protection measure against mosquito bites.

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Solid-lipid nanoparticles (SLN)s containing Zataria multiflora essential oil with no-cytotoxicity and potent repellent activity against Anopheles stephensi

Journal of Parasitic Diseases ◽

10.1007/s12639-020-01281-x ◽

2020 ◽

Author(s):

Hamid Reza Kelidari ◽

Mohammad Djaefar Moemenbellah-Fard ◽

Katayon Morteza-Semnani ◽

Fatemeh Amoozegar ◽

Marziae Shahriari-Namadi ◽

...

Keyword(s):

Essential Oil ◽

Solid Lipid Nanoparticles ◽

Anopheles Stephensi ◽

Lipid Nanoparticles ◽

Repellent Activity ◽

Zataria Multiflora ◽

Solid Lipid

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Chemical Composition and Antibacterial Activity of Pituranthos Chloranthus Volatile Oil

Natural Product Communications ◽

10.1177/1934578x0700201123 ◽

2007 ◽

Vol 2 (11) ◽

pp. 1934578X0700201 ◽

Cited By ~ 4

Author(s):

Mostepha Dahia ◽

Hocine Laouer ◽

Adel N. Chaker ◽

Soizic Prado ◽

Uwe J. Meierhenrich ◽

...

Keyword(s):

Mass Spectrometry ◽

Gas Chromatography ◽

Pseudomonas Aeruginosa ◽

Antibacterial Activity ◽

Chemical Composition ◽

Essential Oil ◽

Volatile Oil ◽

Gas Chromatography Mass Spectrometry ◽

Chromatography Mass Spectrometry

The chemical composition of the essential oil of Pituranthos chloranthus ssp. cossonianus Maire (Apiaceae) was investigated by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) to reveal 54 compounds. The main constituents were myristicine (27.4%), limonene (15.8%), α-pinene (11.4%), and α-phellandrene (8.3%). The antibacterial activity of the oil was evaluated against several strains and was shown to be significant against Pseudomonas aeruginosa.

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Impact of Different Storage Conditions on Composition of Lemongrass (Cymbopogon citratus L.) Essential Oil of Tien Giang Province, Vietnam

Asian Journal of Chemistry ◽

10.14233/ajchem.2020.22561 ◽

2020 ◽

Vol 32 (11) ◽

pp. 2743-2747

Author(s):

Thi Kim Ngan Tran ◽

Tan Phat Dao ◽

Thi Cam Quyen Ngo ◽

Thien Hien Tran ◽

Ung Thanh Dat ◽

...

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Essential Oils ◽

Storage Time ◽

Physical Stability ◽

Chemical Properties ◽

Storage Conditions ◽

Citronella Oil ◽

Main Components ◽

Physical And Chemical

Essential oils are known to be susceptible to changes and degradation that can lead to loss of quality and pharmacological properties. In this work, lemongrass essential oil is stored under different storage conditions under the influence of light and temperature, assessing the physical and chemical properties as well as the chemical composition of the citronella essential oil respectively. The change in the chemical composition of citronella oil is determined based on the storage time of 4 months under different conditions i.e. light (45 ºC) and in dark (4 ºC). To determine the change in the composition of the essential oil, based on the results of GC-MS analysis methods to monitor the chemical changes of the essential oil. The content of main components of citral and β-myrcene increases significantly after storage time under the influence of light and temperature. Some low content components (β-citronello, β-caryophyllen, p-cymen-8-ol, etc.) are likely to be oxidized and lost under light conditions, even in the dark. Therefore, the importance of external storage factors for the chemical and physical stability of essential oils is a matter of concern to control the quality of scientific evaluation.

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