scholarly journals Interactions of Schinus terebinthifolius (Anacardiaceae) essential oil against Aedes aegypti (Diptera: Culicidae) larvae

2021 ◽  
Vol 10 (10) ◽  
pp. e315101018892
Author(s):  
Fernanda Marques Pacheco ◽  
Taynara Ellen Sardeiro Vieira ◽  
Matheus de Sousa Melo Morais ◽  
Jerônimo Raimundo de Oliveira Neto ◽  
Luiz Carlos da Cunha ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Aedes Aegypti ◽  
Essential Oils ◽  
Time Of Death ◽  
Brazilian Cerrado ◽  
Inhibitory Interaction ◽  
Schinus Terebinthifolius ◽  
The City ◽  
Different Parts

Essential oils arouse the interest of research for insect control. Schinus terebinthifolius is described in the literature for being bioactive against Aedes aegypti larvae. However, studies are scarce to fully assess the larvicidal potential of this species. This study aimed to evaluate the chemical composition, bioactivity, time of death and bioavailability of the essential oil from different parts of S. terebinthifolius obtained from the Brazilian cerrado on Ae. aegypti larvae. For this, plants grown in the city of Goiânia-GO were used and the elucidation of the chemical composition of essential oils was carried out by means of gas chromatography coupled with mass spectrometry. Ae. aegypti larvae were used in the bioassays to assess larvicidal activity, determine the time of death and bioavailability of the essential oil in solution. In addition, the interference of essential oil in the activity of the enzyme acetylcholinesterase was also investigated. Based on the results obtained, it was observed that the most promising essential oil for the development of larvicidal formulations is that of fruits, based on having higher yield, greater bioactivity, time of death similar to synthetic insecticides. An inhibitory interaction of acetylcholinesterase was also observed. However, the essential oil had low bioavailability, so it is necessary to develop formulations to increase its bioactivity period.

scholarly journals Chemical Composition of Cinnamomum verum Leaf and Flower Essential Oils and Analysis of Their Antibacterial, Insecticidal, and Larvicidal Properties

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6303
Author(s):  
Arunaksharan Narayanankutty ◽  
Krishnaprasad Kunnath ◽  
Ahmed Alfarhan ◽  
Rajakrishnan Rajagopal ◽  
Varsha Ramesh
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Callosobruchus Maculatus ◽  
Sitophilus Oryzae ◽  
Microbial Pathogens ◽  
Traditional Medicines ◽  
Significant Toxicity ◽  
Leaf Essential Oil ◽  
Different Parts

Cinnamomum verum is widely used in traditional medicines, and the different parts of the plant, such as bark, leaves, and flowers, are used for essential oil production. The present study compared the chemical composition of the essential oil of C. verum extracted from the leaves and flowers. In addition, efficacy of these essential oils against the two common pests Sitophilus oryzae and Callosobruchus maculatus was also evaluated. The results indicated the presence of cinnamaldehyde, eugenol, caryophyllene, and linalool in these essential oils, however, at different concentrations. The leaf essential oil was found to be 10–20% more effective as a fumigant against both the pests. Likewise, the leaf essential oil found to repel these pests even at lower concentrations than that of flower essential oil of C. verum. Besides, these essential oils were also effective in controlling the growth of various gram positive and gram negative microbial pathogens and possibly a safeguard for human health. On contrary, both the essential oils were found to be safe for the application on grains, as indicated by their germination potentials. It was also observed that these essential oils do not cause any significant toxicity to guppy fishes, thus confirming their ecological safety for use as a biopesticide.

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

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.

scholarly journals Chemical Composition and Anti-mildew Activities of Essential Oils from Different Parts of Michelia compressa var. formosana

2015 ◽  
Vol 10 (4) ◽  
pp. 1934578X1501000
Author(s):  
Yu-Chang Su ◽  
Kuang-Ping Hsu ◽  
Eugene I-Chen Wang ◽  
Chen-Lung Ho
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Main Constituent ◽  
Germacrene D ◽  
Leaf Oil ◽  
Essential Oil Yield ◽  
Different Parts ◽  
Type Apparatus

In this study, anti-mildew activities of the essential oils of the leaves, wood, twigs, flowers, and their constituents from Michelia compressa var. formosana were evaluated in vitro against 7 mildew fungi. The main compounds responsible for the anti-mildew activities were isolated and identified. The essential oils from the fresh leaves, wood, twigs, and flowers of M. compressa var. formosana were isolated using hydrodistillation in a Clevenger-type apparatus, and characterized by GC-FID and GC-MS. The essential oil yield from the flowers was the highest, and the oils obtained from the 4 parts of the tree were composed mainly of sesquiterpenoids. The leaf oil consisted primarily of α-cadinol (18.9%) and germacrene D (18.5%); the twig oil's main constituent was α-cadinol (19.1%); the wood oil's major components were α-cadinol (25.7%) and β-eudesmol (20.2%); and the flower oil contained α-cadinol (11.4%). Comparing the anti-mildew activities of the oils suggested that wood oil was the most effective. Further fractionation of the wood oil produced α-cadinol, β-eudesmol, τ-cadinol, and elemol. The 4 compounds exhibit very strong anti-mildew activities, and these in descending order are α-cadinol, elemol, β-eudesmol, and τ-cadinol. For the anti-mildew activities of the wood oil, the active source compounds were determined to be α-cadinol, elemol, β-eudesmol, and τ-cadinol.

scholarly journals Antioxidant and biological activities of essential oil from Colombian Swinglea glutinosa (Blanco) Merr fruit

2020 ◽  
Vol 42 ◽  
pp. e51639
Author(s):  
Beatriz Eugenia Jaramillo-Colorado ◽  
Flor María Palacio-Herrera ◽  
Edisson Duarte-Restrepo
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Tribolium Castaneum ◽  
Biological Activities ◽  
Volatile Composition ◽  
Germacrene D ◽  
The City

 The objectives of this work were the study of the volatile chemical composition of essential oils (EO’s) from Swinglea glutinosa, as well as to evaluate their antioxidant, repellent and fumigant properties. The EO was obtained by hydrodistillation from the peel of the fruit, gathered in the city of Cartagena, Bolívar (Colombia). The volatile composition was analyzed by gas chromatography coupled to mass spectrometry (GC-MS). The major compounds found in S. glutinosa were germacrene D (4.8%), limonene (5.2%), a-terpineol (6.5%), b-pinene (8.5%), nerolidyl acetate (9.8%), and trans-nerolidol (34.6%). S. glutinosa showed antioxidant potential (85.8%) (IC50=142.49 µg mL-1). The EO deployed repellent activity against the Tribolium castaneum weevil at a concentration of 15.73 nL cm-1 at 2 hours of exposure (72%), while the result for the commercial repellent was 50% at the same concentration. EO from S. glutinosa displayed the best fumigant activity with LC50 of 153.4 μg mL-1 air. The essential oil from S. glutinosa can be considerated as a natural source of biocides and antioxidants.

scholarly journals Chemical Composition and Antioxidant, Antimicrobial, and Larvicidal Activities of the Essential Oils of Annona Salzmannii and A. pickelii (Annonaceae)

2011 ◽  
Vol 6 (6) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Emmanoel Vilaça Costa ◽  
Lívia Macedo Dutra ◽  
Hugo César Ramos de Jesus ◽  
Paulo Cesar de Lima Nogueira ◽  
Valéria Regina de Souza Moraes ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Aedes Aegypti ◽  
Essential Oils ◽  
Antioxidant Capacity ◽  
Bacteria And Fungi ◽  
Main Components ◽  
Larvicidal Activities ◽  
Type Apparatus

The essential oils from the leaves of Annona salzmannii and A. pickelii (Annonaceae) growing in Sergipe, northeastern region of Brazil, were obtained by hydrodistillation using a Clevenger-type apparatus, and analyzed by GC/MS and GC/FID. Thirty-four compounds were identified in the essential oil of A. salzmannii and twenty-seven in that of A. pickelii; sesquiterpenes predominated in both essential oils. Bicyclogermacrene (20.3%), ( E)-caryophyllene (19.9%), δ-cadinene (15.3%), α-copaene (10.0%), and allo-aromadendrene (5.7%) were the main components of A. salzmannii, and bicyclogermacrene (45.4%), ( E)-caryophyllene (14.6%), and α-copaene (10.6%) of A. pickelii. The essential oils showed significant antioxidant capacity in the ORACFL and DPPH assays. The antimicrobial activity of these essential oils was also evaluated against bacteria and fungi, as well as the larvicidal activity against Aedes aegypti larvae.

scholarly journals CHEMICAL COMPOSITION OF THE ESSENTIAL OIL OF THE CROTON TETRADENIUS (EUPHORBIACEAE) AERIAL PART AND BIOACTIVITY ON AEDES AEGYPTI (DIPTERA: CULICIDAE) IN RELATION TO DIFFERENT COLLECTION PERIODS

2018 ◽  
Vol 15 (30) ◽  
pp. 364-379
Author(s):  
Q. Q. A. ANJOS ◽  
S. L. C. SILVA ◽  
D. C. SILVA ◽  
S. A. GUALBERTO ◽  
F. R. SANTOS ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Aedes Aegypti ◽  
Essential Oils ◽  
Aerial Part ◽  
Integrated Control ◽  
Composition Analysis ◽  
Chemical Substances ◽  
Control Programs ◽  
Collection Period

Research has demonstrated the presence of a variety of chemical substances in the essential oils of species belonging to the Croton genus and its potential insecticide. The objective of this research was to evaluate the larvicidal activity of the essential oil obtained from the aerial part of Croton tetradenius on Aedes aegypti, as well as its yield and chemical composition, in relation to different periods of collection of the botanical material. Eight essential oil concentrations were evaluated, using 4 replicates per treatment, using 30 larvae per replicate, totaling 120 larvae per treatment. The chemical composition analysis was carried out using Gas Chromatography coupled to Mass Spectrometry. The yield of the essential oil in the extraction carried out in February was lower. The most toxic essential oil for A. aegypti larvae was extracted in August. The analysis of the chemical composition revealed the presence of 60, 48 and 62 compounds in the essential oils for the months of February, May and August, respectively. The essential oil obtained from the aerial part of C. tetradenius has shown to be promising for use in A. aegypti integrated control programs, however, in order to maximize this toxic effect, the collection period should be taken into account.

Comparative Evaluation of the Chemical Composition of Essential Oil from Twig, Leaf and Root of Clerodendrum inerme (L.) Gaertn

2011 ◽  
Vol 343-344 ◽  
pp. 22-27 ◽  
Author(s):  
Dong Hai Li ◽  
Zhao Wang ◽  
Zhen Yi Liang ◽  
Xiao Bo Yang ◽  
Jing Xu
Keyword(s):  
Linoleic Acid ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Comparative Evaluation ◽  
Dibutyl Phthalate ◽  
The Other ◽  
Main Component ◽  
Different Parts

This study was designed to comparative evaluate the chemical composition of the essential oil from twig, leaf and root parts ofClerodendrum inerme(L.)Gaertn. GC-MS analyses of the oils revealed the presence of 8, 8 and 6 compounds in the essential oils obtained by hydrodistillation from different parts, respectively. Higher amounts of esters were found to compose a major chemotype in diverse parts of the plant. Dibutyl phthalate was the main component of all the essential oils attaining in average 34.22%, 59.28% and 44.27% and the other kind of esters accounted for 38.30%, 17.28% and 10.89% in the twig, leaf and root parts, respectively. In addition, some pharmaceutical components such as stigmasterol, linoleic acid and ferruginol were discovered. The study offers theoretic basis for utilization of the traditional folk herbC. inerme.

Comparative Evaluation of the Chemical Composition of Essential Oil from Different Parts of Ficus microcarpa

2012 ◽  
Vol 560-561 ◽  
pp. 415-422 ◽  
Author(s):  
Qiang Lin ◽  
Yan Feng Liu ◽  
Yu Kai Chen ◽  
Zhao Wang ◽  
Zhen Yi Liang ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Linoleic Acid ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Elaidic Acid ◽  
Total Yield ◽  
Common Component ◽  
Ficus Microcarpa ◽  
Different Parts

This study was designed to comparative evaluate the chemical composition of the essential oil from leaf, aerial root, twig, root and bark parts of Ficus microcarpa L.f. (Moraceace). Gas chromatography (GC) and gas chromatography/mass spectrometry (GC–MS) analyses of the oils revealed the presence of 6, 6, 5, 5 and 5 compounds in the essential oils obtained by hydrodistillation from different parts, respectively. The total yield of the volatile fractions was subsequently 1.89%, 0.87%, 1.27%, 0.97% and 0.71%. Higher amounts of aliphatic acids were found to compose a major chemotype in diverse parts of the plant. n-Hexadecanoic acid, elaidic acid and linoleic acid were the main and common component of all the essential oils totally attaining in average 74%, 87%, 56%, 46% and 88%, independently. In addition, some pharmaceutical components such as elaidic acid, linoleic acid and squalene were discovered. The study offers theoretic basis for utilization of the traditional folk herb F. microcarpa.

scholarly journals Tephrosia Toxicaria Pers Essential Oil: Chemical Composition and Larvicidal Activity

2006 ◽  
Vol 1 (5) ◽  
pp. 1934578X0600100 ◽  
Author(s):  
Walber H. F. Ribeiro ◽  
Jackson N. Vasconcelos ◽  
Angela M. C. Arriaga ◽  
Maria C. F. de Oliveira ◽  
Manoel Andrade-Neto ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Aedes Aegypti ◽  
Essential Oils ◽  
Larvicidal Activity ◽  
Mosquito Larvae ◽  
Main Constituent ◽  
Germacrene D

The essential oils obtained by hydrodistillation of the leaves, stems, and shoots of Tephrosia toxicaria Pers (Papilionaceae) were analyzed using GC and GC/MS. Germacrene D was the major component (20.7-33.3 %) of the oils of leaves and shoots, whereas spathulenol was the main constituent (42.3%) of the stem oil. The essential oils from the leaves and stems, when tested for activity against mosquito larvae (Aedes aegypti), gave LC 50 values of 81.3 ± 2.9 and 63.1 ± 1.0 ppm, respectively.

scholarly journals Comparison of chemical composition of the essential oils from different parts of Thuja occidentalis L. ‘Brabant’ and T. occidentalis L. ‘Smaragd’

2016 ◽  
Vol 62 (3) ◽  
pp. 20-27 ◽  
Author(s):  
Anna Lis ◽  
Rozalia Liszkiewicz ◽  
Agnieszka Krajewska
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Thuja Occidentalis ◽  
Domestic Gardens ◽  
Plant Organ ◽  
Different Parts

Summary Introduction: Thuja occidentalis ‘Brabant’ and T. occidentalis ‘Smaragd’ are widely planted as decoration in parks and as hedges in domestic gardens in Poland. Objective: The aim of the study was to determine the yield and the composition of essential oils from different parts of these cultivars. Methods: The essential oils were obtained by hydrodistillation, and then analyzed by GC/MS. Results: Over seventy compounds were identified. The oils from leaves, twigs with leaves and twigs without leaves of ‘Brabant’ variety contained mainly α-thujone (61.0–64.4%), β-thujone (10.4–10.7%) and fenchone (7.7–8.0%), whereas in the cone oil there were α-thujone (42.1%), sabinene (11.2%) and β-thujone (10.2%). The main constituents of the oil from leaves and twigs with leaves of ‘Smaragd’ variety were α-thujone (49.2–49.3%), beyerene (12.8–13.2%) and sabinene (8.9–9.3%). Conclusions: The yield and chemical composition of the essential oil of T. occidentalis depend on the variety and plant organ. The oil of ‘Brabant’ variety contained more thujones and less diterpenes in comparison with the oil of ‘Smaragd’ variety.

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