scholarly journals Use of Dimethyldioxirane in the Epoxidation of the Main Constituents of the Essential Oils Obtained from Tagetes Lucida, Cymbopogon Citratus, Lippia Alba and Eucalyptus citriodora

2011 ◽  
Vol 6 (7) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Luz A. Veloza ◽  
Lina M. Orozco ◽  
Juan C. Sepúlveda-Arias
Keyword(s):  
Essential Oils ◽  
Organic Synthesis ◽  
Oxygen Transfer ◽  
Environmentally Friendly ◽  
Acetone Solution ◽  
Oxidation Reactions ◽  
Eucalyptus Citriodora ◽  
Cymbopogon Citratus ◽  
Lippia Alba

Dimethyldioxirane (DMDO), a widely used oxidant in organic synthesis is considered an environmentally friendly oxygen transfer reagent because acetone is the only byproduct formed in its oxidation reactions. This work describes the isolation of the main constituents (terpenes) in the essential oils obtained from Tagetes lucida, Cymbopogon citratus, Lippia alba and Eucalyptus citriodora, their epoxidation with DMDO in acetone solution and the characterization of the resulting epoxides by GC-MS (EI) and NMR. This is one of the first reports involving the application of dioxirane chemistry to essential oils in order to generate modified compounds with potential uses in several areas of medicine and industry.

Preparation and Characterization of Naturally Scented Candles Using the Lemongrass (Cymbopogon citratus) Essential Oil

2020 ◽  
Vol 977 ◽  
pp. 212-217
Author(s):  
Hoang Danh Pham ◽  
Tri Nhut Pham ◽  
Do Thi Kim Nga ◽  
Ngan Thi Thu Nhung ◽  
Tri Duc Lam ◽  
...  
Keyword(s):  
Citric Acid ◽  
Essential Oil ◽  
Essential Oils ◽  
Health Effects ◽  
Low Cost ◽  
Cymbopogon Citratus ◽  
Natural Sources ◽  
The Common ◽  
Lemongrass Essential Oil

At present, there are many different forms of relaxation and aromatic candles are one of the common forms. Scented candles not only provide background lighting but also help promoting a feeling of wellness. This study attempts to produce scented candles from natural sources such as soy wax, beeswax, and natural essential oils to bring the most practical benefits to the users. The produced candle should be long lasting, low cost and causes no health effects. The composition of scented candles included 60% beeswax, 30% soy wax, 8% lemongrass essential oil, 1% citric acid, and 1% ethanol.

scholarly journals Evaluation of In Vitro Activity of Essential Oils againstTrypanosoma brucei bruceiandTrypanosoma evansi

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Nathan Habila ◽  
Abel S. Agbaji ◽  
Zakari Ladan ◽  
Isaac A. Bello ◽  
Emmanuel Haruna ◽  
...  
Keyword(s):  
Essential Oils ◽  
Eucalyptus Camaldulensis ◽  
Trypanosoma Evansi ◽  
In Vitro Activity ◽  
Eucalyptus Citriodora ◽  
Cymbopogon Citratus ◽  
Trypanosoma Brucei Brucei ◽  
Short Period ◽  
Dose Dependent

Essential oils (EOs) fromCymbopogon citratus(CC),Eucalyptus citriodora(EC),Eucalyptus camaldulensis(ED), andCitrus sinensis(CS) were obtained by hydrodistillation process. The EOs were evaluated in vitro for activity againstTrypanosoma brucei brucei(Tbb) andTrypanosoma evansi(T. evansi). The EOs were found to possess antitrypanosomal activity in vitro in a dose-dependent pattern in a short period of time. The drop in number of parasite over time was achieved doses of 0.4 g/ml, 0.2 g/mL, and 0.1 g/mL for all the EOs. The concentration of 0.4 g/mL CC was more potent at 3 minutes and 2 minutes for Tbb andT. evansi, respectively. The GC-MS analysis of the EOs revealed presence of Cyclobutane (96.09%) in CS, 6-octenal (77.11%) in EC, Eucalyptol (75%) in ED, and Citral (38.32%) in CC among several other organic compounds. The results are discussed in relation to trypanosome chemotherapy.

scholarly journals Effect of Lippia alba and Cymbopogon citratus essential oils on biofilms of Streptococcus mutans and cytotoxicity in CHO cells

2016 ◽  
Vol 194 ◽  
pp. 749-754 ◽  
Author(s):  
A. Tofiño-Rivera ◽  
M. Ortega-Cuadros ◽  
D. Galvis-Pareja ◽  
H. Jiménez-Rios ◽  
L.J. Merini ◽  
...  
Keyword(s):  
Essential Oils ◽  
Streptococcus Mutans ◽  
Cho Cells ◽  
Cymbopogon Citratus ◽  
Lippia Alba

scholarly journals Inhibitory action of some essential oils and phytochemicals on the growth of various moulds isolated from foods

2005 ◽  
Vol 48 (2) ◽  
pp. 245-250 ◽  
Author(s):  
Evandro Leite de Souza ◽  
Edeltrudes de Oliveira Lima ◽  
Kristerson Reinaldo de Luna Freire ◽  
Cristina Paiva de Sousa
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Aspergillus Flavus ◽  
Inhibitory Action ◽  
Citrus Limon ◽  
Cymbopogon Citratus ◽  
Fusarium Spp ◽  
Lippia Alba ◽  
Penicillium Spp ◽  
Sensitivity Profile

The aim of this study was to determine the sensitivity profile of mould strains isolated from foods to some essential oils and phytochemicals. The assayed mould strains were: Fusarium spp., Rhizopus spp., Aspergillus flavus, A. niger and Penicillium spp. According to results, Lippia alba N.E. Brown, Peumus boldus Molina, Lippia microphylla Phil., Citrus limon Risso and Cymbopogon citratus Stapf. essential oil and the phytochemicals citral, eugenol and mircene showed prominent antimould activity. Among the products that evidenced antimould activity, citral and eugenol showed the lowest minimum inhibitory concentrations, which was 1% and 4%, respectively, for the most of the tested mould strains.

scholarly journals Essential Oils of New Lippia alba Genotypes Analyzed by Flow-Modulated Comprehensive Two-Dimensional Gas Chromatography (GC×GC) and Chemometric Analysis

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2332
Author(s):  
Leila Gimenes ◽  
Júlio César R. Lopes Silva ◽  
Roselaine Facanali ◽  
Leandro Wang Hantao ◽  
Walter José Siqueira ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Essential Oils ◽  
Chemical Characterization ◽  
Two Dimensional ◽  
Germplasm Bank ◽  
Multivariate Statistical ◽  
Lippia Alba ◽  
Germacrene D ◽  
Promising Source

Lippia alba (Mill.) N. E. Br. (Verbenaceae) is an aromatic shrub whose essential oils have stood out as a promising source for application in several industrial fields. In this study, the essential oils chemical characterization of eight new L. alba genotypes was performed. The selected materials were collected from the Active Germplasm Bank of the Agronomic Institute and the essential oils were extracted by hydrodistillation. Flow-modulated comprehensive two-dimensional gas chromatography coupled to mass spectrometry (GC×GC-MS) was employed for chemical characterization and evaluation of possible co-eluted compounds. In addition, the chemical analyses were submitted to multivariate statistical analyses. From this investigation, 73 metabolites were identified in the essential oils of the genotypes, from which α-pinene, β-myrcene, 1,8-cineole, linalool, neral, geranial, and caryophyllene oxide were the most abundant compounds among the accessions. This is the first report disclosing α-pinene in higher amounts in L. alba (19.69%). In addition, sabinene, trans-verbenol, myrtenol, (E)-caryophyllene, α-guaiene, germacrene D, and α-bulnesene were also found in relevant quantities in some of the genotypes, and myrtenal and myrtenol could be well separated through the second dimension. Such results contributed to the understanding of the chemical composition of those new genotypes, being important to drive a future industrial applicability and studies in genetic breeding.

scholarly journals The Mosquito Larvicidal Activity of Essential Oils from Cymbopogon and Eucalyptus Species in Vietnam

Insects ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 128 ◽  
Author(s):  
Ho Dung Manh ◽  
Do Thi Hue ◽  
Nguyen Thi Thanh Hieu ◽  
Doan Thi Thanh Tuyen ◽  
Ong Thi Tuyet
Keyword(s):  
Aedes Aegypti ◽  
Essential Oils ◽  
Larvicidal Activity ◽  
Eucalyptus Camaldulensis ◽  
Probit Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Eucalyptus Species ◽  
Eucalyptus Citriodora ◽  
Cymbopogon Citratus ◽  
Cymbopogon Winterianus

The larvicidal activity of essential oils (EOs) extracted from Cymbopogon citratus, Cymbopogon winterianus, Eucalyptus citriodora, and Eucalyptus camaldulensis aromatic plants grown in Vietnam was evaluated on Aedes aegypti larvae. The EOs were hydro-distilled in a Clevenger-type apparatus. The EOs were analyzed by gas chromatography–mass spectrometry (GC–MS). The mortality rates obtained from the bioassays were used to calculate the lethal concentrations (LC50) of the EOs by the probit analysis method. These essential oils exhibited toxicity to the larvae of Aedes aegypti. Results were obtained for Cymbopogon citratus (LC50 = 120.6 ppm), Cymbopogon winterianus (LC50 = 38.8 ppm), Eucalyptus citriodora (LC50 = 104.4 ppm), and Eucalyptus camaldulensis (LC50 = 33.7 ppm). The essential oils of Eucalyptus camaldulensis and Cymbopogon winterianus were found to be the most efficient, and their respective values of LC50 were 33.7 ppm, 38.8 ppm. In conclusion, this research adds to the growing body of literature on natural larvicides from essential oils against Aedes aegypti mosquitoes.

scholarly journals HEMI-SYNTHESIS AND UV-VISIBLE SPECTROPHOTOMETRIC CHARACTERIZATION OF 2,4-DINITROPHENYLHYDRAZONES DERIVED FROM CITRAL AND CITRONELLAL ESSENTIAL OILS OF TWO AROMATIC PLANTS ACCLIMATIZED IN CONGO-BRAZZAVILLE

2021 ◽  
Vol 9 (03) ◽  
pp. 581-593
Author(s):  
Ndzeli Likibi Belline ◽  
◽  
Loubaki Milandou Laurent ◽  
Nsikabaka Samuel ◽  
Ouamba Jean-Maurille ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Essential Oils ◽  
Eucalyptus Citriodora ◽  
Easy Method ◽  
Uv Visible ◽  
Congo Brazzaville ◽  
High Level ◽  
Short Time

The orange-yellow and colorless essential oils with respective yields of 1.54% and 3.59% were extracted from the dry leaves of Cymbopogoncitratus (DC.) Stapf and Eucalyptus citriodora Hook. collected south of Brazzaville. Analysis by gas chromatography (GC) and by gas chromatography coupled with mass spectrometry (GC/MS) allowed the identification of fifteen (15) and eight (8) constituents representing (96.25%) and (98.46%) of total essential oils respectively. Cymbopogoncitratus oil consists mainly of geranial (51.99%) and neral (32.94%), two geometric isomers constituting citral which occupies a rate of 84.93%. While citronellal with a high level of (80.72%) and citronellol (10.48%) are the major compounds of the essential oil of Eucalyptus citriodora. Geranial (citral a) and citronellal 2,4-dinitrophenylhydrazones were hemi-synthesized by a simple, easy method, respectively from essential oils of Cymbopogoncitratus and Eucalyptus citriodora with respective conversion rate (yields) of 20%. and 37%, in a short time (three to five minutes). Analysis of geranial and citronellal 2,4-dinitrophenylhydrazones by UV-visible spectrophotometry showed maximum absorption wavelengths of 390 nm and 370 nm respectively. The UV-visible spectrophotometric method employed for the determination of these hydrazones is convenient, fast and simple. The hemi-synthesized hydrazones could be useful in the pharmaceutical industry, in perfumery, cosmetic and in biomedicine.

scholarly journals Characterization and application of Lippia alba (Mill) and Cymbopogon citratus D.C. Stapf. essential oils as natural sanitizers in coriander

2019 ◽  
Vol 39 (4) ◽  
pp. 993-998
Author(s):  
Amanda Beatriz Sales de LIMA ◽  
Inês Maria Barbosa Nunes QUEIROGA ◽  
Gabriela Muricy de Souza SILVA ◽  
Jessyka Silva da COSTA ◽  
Jossana Pereira de Sousa GUEDES ◽  
...  
Keyword(s):  
Essential Oils ◽  
Cymbopogon Citratus ◽  
Lippia Alba

scholarly journals Assessment of the antibacterial activity of four essential oils and the biobactericide Neco.

2017 ◽  
Vol 9 (3) ◽  
pp. 443 ◽  
Author(s):  
Jean-Fabrice Yala ◽  
Rolande Mabika Mabika ◽  
Brahima Camara ◽  
Seydou Tuo ◽  
Alain Souza ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Essential Oils ◽  
Diffusion Method ◽  
Melaleuca Quinquenervia ◽  
Eucalyptus Citriodora ◽  
Cymbopogon Citratus ◽  
Gram Positive Bacteria ◽  
Lippia Multiflora ◽  
Microdilution Method

<p>The purpose of this study was to assess <em>in vitro</em> the activity of four essential oils (<em>Cymbopogon citratus, Eucalyptus citriodora, Lippia multiflora, Melaleuca quinquenervia</em>) and the biobactericide Neco® on Gram-positive bacteria.</p><p><strong>T</strong>he aromatogram and antibiogram were assessed by the agar well diffusion method and the Muller Hinton disk-agar diffusion method, respectively. Also, the minimum inhibitory concentration and the minimum bactericidal concentration were determined by the microdilution method in liquid medium.</p><p>The aromatogram showed that the biobactericide Neco® induced the largest inhibition diameters (34.53 ± 11.82 - 43.92 ± 5.38 mm) of all strains combined, followed by the essential oils of <em>Eucalyptus Citriodora</em> (30.01 ± 3.02 - 41.89 ± 1.77 mm) and <em>Lippia multiflora</em> (20.72 ± 4.72 - 37.61 ± 2.80 mm). However, the essential oils of <em>Melaleuca quinquenervia</em> (19.99 ± 3.93 - 26.20 ± 13.27 mm) and <em>Cymbopogon citratus</em> (13.52 ± 3.59 - 29.08 ± 2.35 mm) had the smallest inhibition diameters. Moreover, the comparison of the activities of the aromatogram and antibiogram revealed generally that activities were higher with essential oils than with antibiotics.</p><p>At the end of this study, the essential oils of <em>Cymbopogon citratus</em>, <em>Eucalyptus citriodora, Lippia multiflora, Melaleuca quinquenervia</em> and the biobactericide Neco® had an antibacterial activity on Gram+ bacteria.</p><p><strong><br /></strong></p>

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