scholarly journals Chemical Composition of the Essential Oils from Two Vietnamese Asarum Species: A. glabrum and A. cordifolium

2013 ◽  
Vol 8 (2) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Tran Huy Thai ◽  
Ophélie Bazzali ◽  
Tran Minh Hoi ◽  
Nguyen Anh Tuan ◽  
Félix Tomi ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Nmr Spectroscopy ◽  
Endangered Species ◽  
Essential Oil ◽  
Essential Oils ◽  
Spectroscopic Techniques ◽  
Red Data Book ◽  
Data Book ◽  
First Time ◽  
C Nmr

The essential oil isolated from Asarum cordifolium C. E. C. Fischer recently discovered in Vietnam, and A. glabrum Merr., an endangered species listed as vulnerable in the Red Data Book of Vietnam, have been analyzed by a combination of chromatographic and spectroscopic techniques including 13C NMR spectroscopy. The composition of A. cordifolium essential oil, investigated for the first time, was dominated by elemicin (82.5%). The essential oil isolated from A. glabrum contained safrole (41.9%) as its major component and was characterized by the diversity of phenylpropanoids contained in this oil (10 compounds).

scholarly journals Composition of Seed Essential Oils of Rhododendron tomentosum

2012 ◽  
Vol 7 (2) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Asta Judzentiene ◽  
Rita Butkiene ◽  
Jurga Budiene ◽  
Félix Tomi ◽  
Joseph Casanova
Keyword(s):  
Quantitative Analysis ◽  
Chemical Composition ◽  
Nmr Spectroscopy ◽  
Essential Oil ◽  
Essential Oils ◽  
Thermal Isomerization ◽  
Total Oil ◽  
First Time ◽  
Rhododendron Tomentosum ◽  
C Nmr

For the first time, the chemical composition of the seed essential oil of Rhododendron tomentosum was determined. Forty-seven compounds were identified, comprising 91.7% of the total oil. Palustrol (38.3%) and ledol (27.0%) were the predominant constituents. Some constituents, such as β-pinene oxide, iso-menthyl acetate, nerolidyl acetate, cadalene and guaiazulene were characteristic only for the seeds and were identified for the first time in Rh. tomentosum oils. For comparison purposes, the essential oil isolated from the shoots of the same plant were analyzed [GC(FID) in combination with RIs, GC-MS and 13C NMR]. More than a half of the oil was comprised of ledol (36.5%) and palustrol (21.0%). Quantitative analysis of ascaridol, a heat-sensitive compound, was carried out by 13C NMR spectroscopy. Indeed, ascaridol undergoes partial thermal isomerization to iso-ascaridol during GC analyses.

scholarly journals Analysis of Essential Oils of Artemisia absinthium L. from Lithuania by CC, GC(RI), GC-MS and 13C NMR

2009 ◽  
Vol 4 (8) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Asta Judzentiene ◽  
Félix Tomi ◽  
Joseph Casanova
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
13C Nmr ◽  
Artemisia Absinthium ◽  
The Third ◽  
Chemical Variability ◽  
Almost All ◽  
First Time ◽  
C Nmr

Different techniques have been utilized to determine the composition of Artemisia absinthum (wormwood) essential oil. The oil was fractionated on a silica gel column and each fraction analyzed by GC(RI), GC-MS and 13C NMR. This allowed the identification, for the first time in A. absinthium, of two diterpenes, 9-geranyl-p-cymene and 9-geranyl-α-terpinene, and two homoditerpenes, 9-(15,16-dihydro-15-methylene)-geranyl-p-cymene and 9-(15,16-dihydro-15-methylene)-geranyl-α-terpinene. Chemical variability of A. absinthium essential oils from plants collected in the surroundings of Vilnius city over several years (1999-2007) was also shown. Chemical composition was determined by GC and GC-MS. Thujones ( cis+trans, 10.2-36.3%) and trans-sabinyl acetate (9.8-39.2%) were the two predominant constituents of almost all the investigated oils (13 out of 15 samples). The third major compound was myrcene (5.1-9.2%, in four samples), β-pinene (5.4-10.4%, in 5), linalool (4.7% in one), trans-sabinol (6.4%, in one) and 1,8-cineole (5.2-7.1%, in two). In one oil, the prevailing components were thujones ( cis+trans, 11.2%), trans-sabinene hydrate (11.0%) and trans-sabinyl acetate (8.8%), while another sample was characterized by a large quantity of trans-sabinyl acetate (55.2%) and the absence of thujones.

scholarly journals Combined Analysis by GC (RI), GC/MS and 13C NMR Spectroscopy of Elsholtzia blanda, E. penduliflora and E. winitiana Essential Oils

2007 ◽  
Vol 2 (8) ◽  
pp. 1934578X0700200 ◽  
Author(s):  
Dominique Lesueur ◽  
Ange Bighelli ◽  
Nguyen Thi Tam ◽  
Nguyen Viet Than ◽  
Pham thi Kim Dung ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Nmr Spectroscopy ◽  
Essential Oil ◽  
Essential Oils ◽  
13C Nmr ◽  
13C Nmr Spectroscopy ◽  
Retention Indices ◽  
Aerial Parts ◽  
Two Samples ◽  
C Nmr

The chemical composition of six oil samples, isolated from aerial parts of Elsholtzia blanda, E. penduliflora and E. winitiana, harvested in two provinces of Vietnam, was investigated by GC, in combination with retention indices (RI), GC/MS and 13C NMR spectroscopy. Linalool was the major component (75.2 and 56.8%) of the two samples of E. blanda essential oil, whereas the two oil samples from E. penduliflora were dominated by 1,8-cineole (62.7 and 65.5%). Conversely, the two oil samples of E. winitiana exhibited different compositions, rosefuran (56.0%) and dehydroelsholtzia ketone (22.8%) being the major components of one sample, whilst the second sample was dominated by elsholtzia ketone (87.5%).

scholarly journals Chemical composition and antifungal activity of essential oils from four Asteraceae plants grown in Egypt

2018 ◽  
Vol 73 (7-8) ◽  
pp. 313-318 ◽  
Author(s):  
Rose Vanessa Bandeira Reidel ◽  
Simona Nardoni ◽  
Francesca Mancianti ◽  
Claudia Anedda ◽  
Abd El-Nasser G. El Gendy ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Antifungal Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Inhibitory Activity ◽  
First Time

Abstract The objective of the present paper was the assessment of the chemical composition of the essential oils from four Asteraceae species with a considerable food, medicinal, and agricultural value, collected in Egypt, together with their in vitro inhibitory activity against molds and yeasts. The essential oil of Launaea cornuta flowers was also evaluated for the first time, but because of its very low yield (<0.01%), no antifungal test was performed.

scholarly journals Composition and Chemical Variability of Ivoirian Xylopia staudtii Leaf Oil

2015 ◽  
Vol 10 (6) ◽  
pp. 1934578X1501000
Author(s):  
Thierry Acafou Yapi ◽  
Jean Brice Boti ◽  
Antoine Coffy Ahibo ◽  
Sylvain Sutour ◽  
Ange Bighelli ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Nmr Spectroscopy ◽  
Essential Oils ◽  
Oil Composition ◽  
Chemical Variability ◽  
Germacrene D ◽  
Leaf Oil ◽  
Nmr Techniques ◽  
C Nmr

The chemical composition of a leaf oil sample from Ivoirian Xylopia staudtii Engler & Diels (Annonaceae) has been investigated by a combination of chromatographic [GC(RI)] and spectroscopic (GC-MS, 13C NMR) techniques. Thirty-five components that accounted for 91.8% of the whole composition have been identified. The oil composition was dominated by the furanoguaiadienes furanoguaia-1,4-diene (39.0%) and furanoguaia-1,3-diene (7.5%), and by germacrene D (17.5%). The composition of twelve other leaf oil samples demonstrated qualitative homogeneity, but quantitative variability. Indeed, the contents of the major components varied substantially: furanoguaia-1,4-diene (24.7–51.7%) and germacrene D (5.9–24.8%). The composition of X. staudtii leaf oil is close to that of X. rubescens leaf oil but varied drastically from those of the essential oils isolated from other Xylopia species. 13C NMR spectroscopy appeared as a powerful and complementary tool for analysis of sesquiterpene-rich essential oils.

scholarly journals Intraspecific Variability of the Essential Oil of Cladanthus mixtus from Morocco

2014 ◽  
Vol 9 (1) ◽  
pp. 1934578X1400900
Author(s):  
Anass Elouaddari ◽  
Abdelaziz El Amrani ◽  
Jamal JamalEddine ◽  
José G. Barroso ◽  
Luis G. Pedro ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Intraspecific Variability ◽  
Individual Plant ◽  
Aerial Parts ◽  
Plant Samples ◽  
First Time

Air-dried aerial parts of wild Cladanthus mixtus were collected from two different regions of Morocco, Bouznika and Oujda, during 2011 and 2012. Forty individual plant samples were hydrodistilled using a Clevenger apparatus and the obtained essential oils were analyzed by GC and GC/MS. The yield obtained varies greatly with a range of 0.3 to 0.8%. The chemical composition of C. mixtus oils changes from one region to another. A total of 53 constituents were identified. To the best of our knowledge, two chemotypes were defined for the first time for this species in the regions studied. 2-Methyl-2- trans-butenyl methacrylate (32.8–35.2%) / ar-curcumene (13–14%) characterize the chemotypeof the C. mixtus plants from Bouznika, and trans-β-farnesene (35.5–50.3%) the chemotype from Oujda.

scholarly journals NEW DATA ON THE BUTTERFLIES OF WESTERN STARA PLANINA MTS (BULGARIA & SERBIA) (LEPIDOPTERA, PAPILIONOIDEA)

2019 ◽  
Vol 20 ◽  
pp. 119-162
Author(s):  
Mario Langourov
Keyword(s):  
Endangered Species ◽  
Red List ◽  
Habitats Directive ◽  
Conservation Value ◽  
European Level ◽  
Red Data Book ◽  
Butterfly Fauna ◽  
High Conservation ◽  
Data Book ◽  
First Time

The paper represents results of surveys carried out in the Western Stara Planina Mts within the last four years in order to improve the knowledge of the butterfly fauna, especially in the Bulgarian part of the mountain. A total of 150 species of Lepidoptera (Papilionoidea) was recorded with comments on their distribution in the Bulgarian part of the studied region. Nineteen species were recorded for the first time in the Bulgarian part of the mountain and one species (Apatura metis) – for the Serbian part. It has been found that the highest butterfly diversity is linked to the largest limestone area in the mountain near Komshtitsa Village where 101 species were observed. Interesting records for some rare or endangered species (Muschampia cribrellum, M. tessellum, Lycaena helle, Kirinia climene, Apatura metis, Nymphalis vaualbum, Melitaea didyma, M. arduinna, M. diamina and Brenthis ino) are discussed in detail. The high conservation value of the studied region proves by the species considered as threatened at the European level, of which seven species are included in the Annexes II and IV of the Habitats Directive, 12 species are listed in the Red Data Book of European butterflies and 26 in the European Red List of Butterflies.

scholarly journals Chemical Composition of Essential Oils from SixZanthoxylumSpecies and Their Repellent Activities against Two Stored-Product Insects

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Wen-Juan Zhang ◽  
Zhe Zhang ◽  
Zhen-Yang Chen ◽  
Jun-Yu Liang ◽  
Zhu-Feng Geng ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Tribolium Castaneum ◽  
Relative Content ◽  
Chemical Components ◽  
Lasioderma Serricorne ◽  
Time Data ◽  
Significant Potential ◽  
First Time

The objective of this study was to analyze six essential oils fromZanthoxylumgenus (family Rutaceae) in China and evaluate their repellent activities againstTribolium castaneumandLasioderma serricorneadults. Six essential oils fromZanthoxylumgenus, includingZ. armatum,Z. dimorphophyllum,Z. dimorphophyllumvar.spinifolium,Z. piasezkii,Z. stenophyllum,andZ. dissitum,were obtained by hydrodistillation and their yields were ranging from 0.02% to 0.53%. Totally, there were 39 chemical components revealed by GC-MS. Among them, some components with high relative content existed in more than threeZanthoxylumspecies. For instance, bothδ-cadinene (1.21%–17.15%) and spathulenol (0.36%–10.19%) appeared in essential oils ofZ. dimorphophyllum,Z. piasezkii,Z. stenophyllum,andZ. dissitumwhich were found to have higher content of sesquiterpenoids. The repellent activities of six essential oil samples againstT. castaneumandL. serricorneadults were investigated for the first time. Data demonstrated that sixZanthoxylumspecies had much stronger repellent activities againstT. castaneumthanL. serricorneadults, especially in 2 hours after exposure. The results indicate that these six essential oils fromZanthoxylumhave significant potential to be developed into natural repellents to control insects in grains, food, and traditional Chinese medicinal materials.

scholarly journals New Natural Oxygenated Sesquiterpenes and Chemical Composition of Leaf Essential Oil from Ivoirian Isolona dewevrei (De Wild. & T. Durand) Engl. & Diels

Molecules ◽  
2020 ◽  
Vol 25 (23) ◽  
pp. 5613
Author(s):  
Didjour Albert Kambiré ◽  
Jean Brice Boti ◽  
Thierry Acafou Yapi ◽  
Zana Adama Ouattara ◽  
Ange Bighelli ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
13C Nmr ◽  
2D Nmr ◽  
Integrated Analysis ◽  
Spectroscopic Techniques ◽  
Germacrene D ◽  
Leaf Essential Oil ◽  
Main Components ◽  
First Time

This study aimed to investigate the chemical composition of the leaf essential oil from Ivoirian Isolona dewevrei. A combination of chromatographic and spectroscopic techniques (GC(RI), GC-MS and 13C-NMR) was used to analyze two oil samples (S1 and S2). Detailed analysis by repetitive column chromatography (CC) of essential oil sample S2 was performed, leading to the isolation of four compounds. Their structures were elucidated by QTOF-MS, 1D and 2D-NMR as (10βH)-1β,8β-oxido-cadin-4-ene (38), 4-methylene-(7αH)-germacra-1(10),5-dien-8β-ol (cis-germacrene D-8-ol) (52), 4-methylene-(7αH)-germacra-1(10),5-dien-8α-ol (trans-germacrene D-8-ol) (53) and cadina-1(10),4-dien-8β-ol (56). Compounds 38, 52 and 53 are new, whereas NMR data of 56 are reported for the first time. Lastly, 57 constituents accounting for 95.5% (S1) and 97.1% (S2) of the whole compositions were identified. Samples S1 and S2 were dominated by germacrene D (23.6 and 20.5%, respectively), followed by germacrene D-8-one (8.9 and 8.7%), (10βH)-1β,8β-oxido-cadin-4-ene (7.3 and 8.7), 4-methylene-(7αH)-germacra-1(10),5-dien-8β-ol (7.8 and 7.4%) and cadina-1(10),4-dien-8β-ol (7.6 and 7.2%). Leaves from I. dewevrei produced sesquiterpene-rich essential oil with an original chemical composition, involving various compounds reported for the first time among the main components. Integrated analysis by GC(RI), GC-MS and 13C-NMR appeared fruitful for the knowledge of such a complex essential oil.

scholarly journals Essential Oil From Psidium guajava Leaves: An Excellent Source of β-Caryophyllene

2019 ◽  
Vol 14 (5) ◽  
pp. 1934578X1984300 ◽  
Author(s):  
Anam Arain ◽  
Syed Tufail Hussain Sherazi ◽  
Sarfaraz Ahmed Mahesar ◽  
Sirajuddin
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Dry Weight ◽  
Psidium Guajava ◽  
Gas Chromatography Mass Spectrometry ◽  
Medicinal Value ◽  
First Time ◽  
Excellent Source ◽  
Chemical Class

The purpose of this study was to investigate the chemical composition of the essential oil extracted from Psidium guajava leaves and to explore the medicinal value of β-caryophyllene in pharmaceutical science. The essential oils of P. guajava leaves were extracted by the hydrodistillation method, using a Clevenger-type apparatus and the chemical composition of essential oils was investigated by gas chromatography–mass spectrometry. The yield of extracted essential oils was 0.6% (w/w) dry weight. The main compounds found in the leaves were β-caryophyllene (20.34%), globulol (8.20%), trans-nerolidol (7.72%), aromadendrene (4.34%), cis-α-bisabolene (3.82%), tetracosane (3.68%), octadecane (3.66%), Z, Z, Z-1,5,9,9-tetramethyl-1,4,7-cycloundecatriene (3.44%), β-bisabolene (3.41%), limonene (3.09%), octacosane (2.88%), δ-cadinene (2.52%), and 1,4-cadadiene (2.04%). The main chemical class of the essential oil was terpenoids, which represent 71.65%, followed by hydrocarbons (26.31%). A total of 50 components were identified, among these β-caryophyllene was found to be dominant, which has great medicinal value, and some other compounds were also identified for the first time in the essential oil of P. guajava leaves.

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