Chemical Constituents and Chemotypes of Fresh Leaf Essential Oil of Wild Species Belonging to Sect. Camphor (Trew.) Meissn. in Southeastern China

2019 ◽  
Vol 22 (4) ◽  
pp. 1115-1122 ◽  
Author(s):  
Beihong Zhang ◽  
Chunsheng Wu ◽  
Zufei Xiao ◽  
Haiyan Zhang ◽  
Meng Cao ◽  
...  
Keyword(s):  
Essential Oil ◽  
Wild Species ◽  
Chemical Constituents ◽  
Southeastern China ◽  
Fresh Leaf ◽  
Leaf Essential Oil

scholarly journals Behavioural activities and chemical composition of fresh leaf essential oil of Plectranthus aegyptiacus from Southwest Nigeria in mice

2021 ◽  
Vol 14 (2) ◽  
pp. 064-076
Author(s):  
Enimeya Dressman Akuegbe ◽  
Idris Ajayi Oyemitan ◽  
Ifeoluwa Isaac Ogunlowo ◽  
Gugulethu Mathew Miya ◽  
Opeoluwa Oyehan Oyedeji ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Inhibitory Effect ◽  
Gas Chromatography Mass Spectrometry ◽  
Gabaergic Neurotransmission ◽  
Fresh Leaf ◽  
Central Nervous System Depressant ◽  
Southwest Nigeria ◽  
Leaf Essential Oil ◽  
Hole Board

Objectives: This study determined the chemical composition of essential oil obtained from fresh leaf of Plectranthus aegyptiacus, and evaluated it for novelty-induced behavioural (NIB) and determine its mechanism(s) of action in mice. Methods: The oil was hydro-distillated, and analyzed using gas chromatography-mass spectrometry. The effects of the oil (50, 100 and 150 mg/kg; i.p., n=6) on novelty-induced behavioural was assessed using open field test and head dipping on hole board. Probable mechanism(s) were evaluated using antagonists: flumazenil, naloxone and cyproheptadine at 2 mg/kg each, atropine and yohimbine at 5 mg/kg and 1 mg/kg respectively. Key Findings: The LD50 values obtained were 2154 and 490 mg/kg for oral and intraperitoneal routes respectively. The oil (50, 100 and150 mg/kg) significantly (p<0.05, 0.01 and 0.01) inhibited all NIB and head dips. Flumazenil significantly (p<0.05) reversed the effect of the oil on NIB; atropine, naloxone and cyproheptadine significantly (p<0.01, 0.01 and 0.001) potentiated inhibitory effect on NIB respectively, while yohimbine showed no significantly effect. The analyzed oil showed 61 compounds, and the major compounds were carvacrol, germacrene-D, p-cymene and [1,1'-Bicyclopentyl]-2,2'-diol. Conclusions: The study concluded that the oil possessed central nervous system depressant activity, which could be mediated mainly through augmentation of GABAergic neurotransmission, while cholinergic-(muscarinic), adrenergic and serotonergic pathways may be involved.

Chemical Constituents of Leaf Essential Oil of Curcuma angustifolia Roxb. Growing in Eastern India

2016 ◽  
Vol 19 (6) ◽  
pp. 1527-1531 ◽  
Author(s):  
Sudipta Jena ◽  
Asit Ray ◽  
Ambika Sahoo ◽  
Basudeba Kar ◽  
Pratap Chandra Panda ◽  
...  
Keyword(s):  
Essential Oil ◽  
Chemical Constituents ◽  
Eastern India ◽  
Leaf Essential Oil

Chemical Constituents and Antimicrobial Activity of the Leaf Essential Oil of Garcinia kola Heckel (Clusiaceae) from Nigeria

2016 ◽  
Vol 13 (4) ◽  
pp. 1-7 ◽  
Author(s):  
Samuel Okhale ◽  
Chukkol Buba ◽  
Peters Oladosu ◽  
Henry Egharevba ◽  
Grace Ugbabe ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Chemical Constituents ◽  
Garcinia Kola ◽  
Leaf Essential Oil ◽  
Garcinia Kola Heckel

scholarly journals Chemical constituents and antibacterial activity of the leaf essential oil of Feronia limonia

2010 ◽  
Vol 50 (S1) ◽  
pp. 70-73 ◽  
Author(s):  
A. Senthil Kumar ◽  
V. Venkatesalu ◽  
K. Kannathasan ◽  
M. Chandrasekaran
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Chemical Constituents ◽  
Leaf Essential Oil

scholarly journals Analysis of Chemical Constituents of Tithonia Rotundifolia Leaf Essential Oil Found in Nigeria

2008 ◽  
Vol 3 (9) ◽  
pp. 1934578X0800300
Author(s):  
Adebayo A. Gbolade ◽  
Vânia Tira-Picos ◽  
J.M.F. Nogueira
Keyword(s):  
Essential Oil ◽  
Chemical Constituents ◽  
Oxygenated Monoterpenes ◽  
Monoterpene Hydrocarbons ◽  
Sesquiterpene Hydrocarbons ◽  
Germacrene D ◽  
Leaf Essential Oil ◽  
Total Oil ◽  
First Time

The essential oil from Tithonia rotundifolia leaf growing wild in Osun State, Nigeria obtained by hydro-distillation has been characterised for the first time by combined GC and GC-MS analyses. Forty-six components representing 93.8% of the total oil have been fully identified. The oil is characterised largely by sesquiterpene hydrocarbons (78.1%), represented chiefly by germacrene D (33%) and β-caryophyllene (25.8%). The less important classes of components are monoterpene hydrocarbons (5.1%), oxygenated monoterpenes (0.3%), oxygenated sesquiterpenes (3.1%) and non-terpenes (7.2%).

CHEMICAL CONSTITUENTS AND ESSENTIAL OIL ANALYSIS FROM THE LEAVES OF PIPER BETLE L. VARIETY DESI

INDIAN DRUGS ◽  
2018 ◽  
Vol 55 (06) ◽  
pp. 14-20
Author(s):  
S Sultana ◽  
◽  
M. Ali ◽  
S. R Mir ◽  
Keyword(s):  
Essential Oil ◽  
Caffeic Acid ◽  
Methanolic Extract ◽  
Chemical Constituents ◽  
Piper Betle ◽  
Spectroscopic Methods ◽  
Oil Analysis ◽  
Phytochemical Investigation ◽  
Leaf Essential Oil ◽  
First Time

Piper betle L. (Piperaceae) is used in traditional medicinal diseases. Our study was planned to isolate chemical constituents from the leaves of P. betle variety desi and to characterized their structures. Phytochemical investigation of the methanolic extract of the leaves of P. betle variety desi led to isolate n-nonyl benzene (1-phenylnonane, 1), 4′-phenyl butanoxy n-hexanoate (4′-phenyl butanoxy caproate, 2), caffeic acid (3),1′-phenoloxy 5′α-hydroxyltetradecane (4) and 5-prop-2a-enyl-4,4′-(2′′α-arachidyloxy-3′′α-hydroxypropyl)-bispyrocatechol (1′′, 2′′-dihydro-2′′α-arachidyloxy-3′′α-hydroxybischavicol, 5). The structures of these phytoconstituents, isolated from this variety of P. betle for the first time, were established by spectroscopic methods and chemical constituents. The leaf essential oil was characterized by high percentage of farnesol (41.13%), acetyl eugenol (26.40%), valencene (6.34%), α - amorphene (3.43%), γ - cadinene (3.56%), isovanillin (2.27%), eugenol (1.21%), cadina-1,4-dione (1.77%) and α - bisabolene (1.15%).

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