Leaf Essential Oil Composition of Three Species ofMyrcianthesfrom Monteverde, Costa Rica

2008 ◽  
Vol 5 (7) ◽  
pp. 1327-1334 ◽  
Author(s):  
Ramona A. Cole ◽  
William A. Haber ◽  
Robert O. Lawton ◽  
William N. Setzer
Keyword(s):  
Costa Rica ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Leaf Essential Oil

scholarly journals Leaf Essential Oil Composition of Five Species of Beilschmiedia from Monteverde, Costa Rica

2007 ◽  
Vol 2 (1) ◽  
pp. 1934578X0700200 ◽  
Author(s):  
William N. Setzer ◽  
William A. Haber
Keyword(s):  
Costa Rica ◽  
Essential Oil ◽  
Carbonyl Compounds ◽  
Essential Oil Composition ◽  
Chemical Compositions ◽  
Oil Composition ◽  
Germacrene D ◽  
Leaf Oil ◽  
Leaf Essential Oil ◽  
Cis And Trans

The leaf essential oils of five species of Beilschmiedia from Monteverde, Costa Rica (Beilschmiedia alloiophylla, B. brenesii, B. costaricensis, B. tilaranensis, and an undescribed Beilschmiedia species “chancho blanco”) have been obtained by hydrodistillation and analyzed by GC-MS in order to discern the differences and similarities between the volatile chemical compositions of these species. The principal constituents of B. alloiophylla leaf oil were germacrene D (18.9%), cis- and trans-β-ocimene (18.8% and 9.3%, respectively), α-pinene (11.8%), and bicyclogermacrene (9.1%). The leaf oil of B. brenesii was composed largely of the sesquiterpenes germacrene D (19.3%), β-caryophyllene (13.4%), α-copaene (9.0%), α-humulene (8.1%), and δ-cadinene (5.8%), and the carbonyl compounds 2-undecanone (12.8%), trans-2-hexenal (8.8%), and 2-tridecanone (3.8%). α-Bisabolol (72.1%) dominated the leaf oil of B. costaricensis, while B. tilaranensis had germacrene D (54.9%), β-caryophyllene (14.8%), and δ-cadinene (5.1%) as major components. Beilschmiedia “chancho blanco” leaf oil was composed largely of β-caryophyllene (16.6%), bicyclogermacrene (14.1%), and α-pinene (12.1%).

scholarly journals Essential oil Composition of Dendropanax Gonatopodus from Monteverde, Costa Rica. An ab Initio Examination of Aromadendrane Sesquiterpenoids

2008 ◽  
Vol 3 (9) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
William N. Setzer
Keyword(s):  
Costa Rica ◽  
Chemical Composition ◽  
Essential Oil ◽  
Ab Initio ◽  
Density Functional ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Hartree Fock ◽  
Leaf Oil ◽  
Leaf Essential Oil

The leaf essential oil of Dendropanax gonatopodus from Monteverde, Costa Rica, has been obtained by hydrodistillation and the chemical composition determined by GC-MS. The major components in the leaf oil were ( E)-2-hexenal (16.9%), terpinolene (14.8%), δ-cadinene (13.5%), ( E)-caryophyllene (9.9%), and α-copaene (7.3%). Minor amounts of the aromadendrane sesquiterpenoids aromadendrene (0.3%), alloaromadendrene (0.3%), spathulenol (0.6%) and globulol (0.6%) were also detected. An ab initio investigation of the aromadendrane sesquiterpenoids has been carried out using both density functional (B3LYP/6-31G*) and post Hartree-Fock (MP2/6-31G**) methods. The calculated relative energies of the aromadendranes belie their relative concentrations generally observed in essential oil compositions.

Leaf essential oil composition of five Zanthoxylum species from Monteverde, Costa Rica

2005 ◽  
Vol 9 (1-3) ◽  
pp. 3-13 ◽  
Author(s):  
William N. Setzer ◽  
Joseph A. Noletto ◽  
Robert O. Lawton ◽  
William A. Haber
Keyword(s):  
Costa Rica ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Leaf Essential Oil

scholarly journals Variation of essential oil composition of Eucalyptus camaldulensis (myrtaceae) from the Montengero coastline

2010 ◽  
pp. 151-158 ◽  
Author(s):  
Slavenko Grbovic ◽  
Dejan Orcic ◽  
Maria Couladis ◽  
Emilija Jovin ◽  
Dusan Bugarin ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Eucalyptus Camaldulensis ◽  
Essential Oil Composition ◽  
Oil Yield ◽  
Oil Composition ◽  
Oxygenated Monoterpenes ◽  
Sesquiterpene Alcohol ◽  
Major Class ◽  
Leaf Essential Oil

In the current study the essential oil obtained from the leaves of Eucalyptus camaldulensis plants collected from five localities of the Montenegro coastline was analyzed. The oil yield varied from 0.63 % (Kotor) up to 1.59% (Tivat). The chemical composition of the leaf essential oil was analyzed using GC-MS technique. Monoterpene hydrocarbons were a major class of compounds. Among them, dominant compounds were p-cymene (17.38-28.60%), ?-phellandrene (12.35-14.47%) and ?-pinene (0.94-11.48%). The second largest group was oxygenated monoterpenes with cryptone (4.97-7.25) and terpinene-4-ol (2.75-4.21%) as predominant. Besides high content of sesquiterpene alcohol spathulenol (7.83-14.15%) was found. According to the results obtained E. camaldulensis from Montenegro can be classified in the chemotype with low 1,8-cineole and high p-cymene and cryptone ratio.

scholarly journals Essential Oil Composition and Antibacterial Activity of Monticalia greenmaniana (Asteraceae)

2012 ◽  
Vol 7 (2) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
José Cárdenas ◽  
Janne Rojas ◽  
Luís Rojas-Fermin ◽  
María Lucena ◽  
Alexis Buitrago
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Mass Spectra ◽  
Essential Oil Composition ◽  
Gram Negative Bacteria ◽  
Oil Composition ◽  
Aerial Parts ◽  
Germacrene D ◽  
Leaf Oil ◽  
Leaf Essential Oil

The essential oils from fresh aerial parts of Monticalia greenmaniana (Hieron) C. Jeffrey (Asteraceae) collected in March, were analyzed by GC/MS. Oil yields (w/v) of 0.1% (flowers), 0.07%, (stems) and 0.1% (leaves) were obtained by hydrodistillation. Thirteen, sixteen and eighteen components, respectively, were identified by comparison of their mass spectra with those in the Wiley GC-MS Library data base. The major components of the flower and stem oils were 1-nonane (38.8% flowers; 33.5% stems), α-pinene (29.0% flowers; 14.8% stems) and germacrene D (15.6% flowers; 18.6% stems). However, in the leaf oil, germacrene D was observed at 50.7%, followed by β-cedrene at 8.4 %. The leaf essential oil showed a broad spectrum of antibacterial activity against the important human pathogenic Gram-positive and Gram-negative bacteria Staphylococcus aureus (ATCC 25923), Enterococcus faecalis (ATCC 19433), Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853) and Klebsiella pneumoniae (ATCC 25955) with MIC values ranging from 75 to 6000 ppm.

scholarly journals Variation in the Volatile Constituents of Different Plant Parts of Ligusticopsis wallichiana from Western Himalaya, India

2012 ◽  
Vol 7 (8) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Rajendra C. Padalia ◽  
Ram S. Verma ◽  
Amit Chauhan ◽  
Chandan S. Chanotiya ◽  
Anju Yadav
Keyword(s):  
Essential Oil ◽  
Western Himalaya ◽  
Essential Oil Composition ◽  
Major Constituent ◽  
Oil Composition ◽  
Plant Parts ◽  
Germacrene D ◽  
Leaf Essential Oil ◽  
First Time ◽  
Acetylenic Compounds

The essential oil composition of the leaves, stem, flowers and roots of Ligusticopsis wallichiana (DC.) Pimenov & Kljuykov were analyzed by GC-FID and GC-MS methods. Forty-five constituents, forming 93.2%–97.8% of the oil compositions, were dominated by acetylenic (31.5%–92.8%) compounds and sesquiterpenoids (0.3%–44.4%). The leaf essential oil was mainly composed 3,5-nonadiyne (35.8%), β-selinene (20.9%), α-funebrene (10.1%) and ( Z)-falcarinol (6.1%). The stem oil was dominated by acetylenic compounds (73.8%) represented by 3,5-nonadiyne (67.8%) and ( Z)-falcarinol (5.7%). On the contrary, the major components of the flower essential oil were sesquiterpenoids (37.5%), such as germacrene D (16.6%), α-funebrene (7.4%), and acetylenic compounds (31.5%), such as ( Z)-falcarinol (21.0%) and 3,5-nonadiyne (10.0%). Monoterpenoids constituted 23.9% of the flower oil with limonene (19.9%) as the single major constituent. The essential oil of the roots was dominated by 3,5-nonadiyne (90.5%). The results showed considerable qualitative and quantitative variations in the essential oil compositions of the different plant parts of L. wallichiana. ( Z)-Falcarinol (1.9%–21.0%) and α-funebrene (0.1%–10.1%) were reported for the first time from the essential oils of L. wallichiana.

scholarly journals Characterization of Leaf Essential Oil Composition of Homozygous and HeterozygousCitrus clementinaHort. Extan. and its Ancestors

2013 ◽  
Vol 16 (1) ◽  
pp. 92-101 ◽  
Author(s):  
Maria Antonietta Germanà ◽  
Eristanna Palazzolo ◽  
Benedetta Chiancone ◽  
Filippo Saiano
Keyword(s):  
Essential Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Leaf Essential Oil

Leaf Essential Oil Composition ofEphedranthus amazonicusR.E. Fr

2007 ◽  
Vol 10 (3) ◽  
pp. 194-197 ◽  
Author(s):  
Eloisa Helena A. Andrade ◽  
Jorge Oliveira ◽  
José Guilherme S. Maia
Keyword(s):  
Essential Oil ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Leaf Essential Oil

scholarly journals Leaf Essential Oil Composition of Selected Strawberry Cultivars with Different Degrees of Susceptibility to Two-spotted Spider Mites

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 831C-831
Author(s):  
Shahrokh Khanizadeh ◽  
Andre Belanger
Keyword(s):  
Essential Oil ◽  
Spider Mite ◽  
Field Trials ◽  
Spider Mites ◽  
Essential Oil Composition ◽  
Considerable Variability ◽  
Oil Composition ◽  
Leaf Essential Oil ◽  
Two Spotted Spider Mite ◽  
Strawberry Cultivars

Considerable variability in susceptibility to two-spotted spider mite (TSSM) were observed for the strawberry cultivars used as parents and some of our promising selections. Large variation was observed for 9-octadecenal oil composition followed by linalool, C9H1002, decanal, β-cyclocitral, α-terpineol and (Z)-3-hexenol. The purpose of this research was to identify the relative susceptibility of selected strawberry lines to TSSM in relation to leaf essential oil composition. One objective of our breeding program is the early identification of susceptible lines and/or seedlings so that they can be eliminated prior to field trials.

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