The sesquiterpene hydrocarbons of the gorgonian, Pseudopterogorgia americana, the nonisoprenoid β-gorgonene.

1968 ◽  
Vol 0 (18) ◽  
pp. 1070-1071 ◽  
Author(s):  
Alfred J. Weinheimer ◽  
Paul H. Washecheck ◽  
Dick van der Helm ◽  
M. Bilayet Hossain
Keyword(s):  
Sesquiterpene Hydrocarbons ◽  
Pseudopterogorgia Americana

scholarly journals Secondary Metabolic Profile as a Tool for Distinction and Characterization of Cultivars of Black Pepper (Piper nigrum L.) Cultivated in Pará State, Brazil

2021 ◽  
Vol 22 (2) ◽  
pp. 890
Author(s):  
Luccas M. Barata ◽  
Eloísa H. Andrade ◽  
Alessandra R. Ramos ◽  
Oriel F. de Lemos ◽  
William N. Setzer ◽  
...  
Keyword(s):  
Black Pepper ◽  
Plant Diseases ◽  
Gas Chromatography Mass Spectrometry ◽  
Piper Nigrum ◽  
Volatile Components ◽  
Chemical Compositions ◽  
Multivariate Statistical ◽  
Protein Targets ◽  
Fruit Samples ◽  
Sesquiterpene Hydrocarbons

This study evaluated the chemical compositions of the leaves and fruits of eight black pepper cultivars cultivated in Pará State (Amazon, Brazil). Hydrodistillation and gas chromatography–mass spectrometry were employed to extract and analyze the volatile compounds, respectively. Sesquiterpene hydrocarbons were predominant (58.5–90.9%) in the cultivars “Cingapura”, “Equador”, “Guajarina”, “Iaçará”, and “Kottanadan”, and “Bragantina”, “Clonada”, and “Uthirankota” displayed oxygenated sesquiterpenoids (50.6–75.0%). The multivariate statistical analysis applied using volatile composition grouped the samples into four groups: γ-Elemene, curzerene, and δ-elemene (“Equador”/“Guajarina”, I); δ-elemene (“Iaçará”/“Kottanadan”/“Cingapura”, II); elemol (“Clonada”/“Uthirankota”, III) and α-muurolol, bicyclogermacrene, and cubebol (“Bragantina”, IV). The major compounds in all fruit samples were monoterpene hydrocarbons such as α-pinene, β-pinene, and limonene. Among the cultivar leaves, phenolics content (44.75–140.53 mg GAE·g−1 FW), the enzymatic activity of phenylalanine-ammonia lyase (20.19–57.22 µU·mL−1), and carotenoids (0.21–2.31 µg·mL−1) displayed significant variations. Due to black pepper’s susceptibility to Fusarium infection, a molecular docking analysis was carried out on Fusarium protein targets using each cultivar’s volatile components. F. oxysporum endoglucanase was identified as the preferential protein target of the compounds. These results can be used to identify chemical markers related to the susceptibility degree of black pepper cultivars to plant diseases prevalent in Pará State.

scholarly journals  New menthone type of Mentha pulegium L. volatile oil from northwest Iran

2011 ◽  
Vol 29 (No. 3) ◽  
pp. 285-290 ◽  
Author(s):  
M.B. Hassanpouraghdam ◽  
A.B. Akhgari ◽  
M.A. Aazami ◽  
J. Emarat-Pardaz
Keyword(s):  
Essential Oil ◽  
Volatile Oil ◽  
Oil Composition ◽  
Mentha Pulegium ◽  
Food Industries ◽  
Aerial Parts ◽  
Sesquiterpene Hydrocarbons ◽  
Main Class ◽  
Northwest Iran ◽  
A Minor

The constituents of the volatile oil of air-dried aerial parts of Mentha pulegium L. (Lamiaceae) plants wildly growing in Northwest Iran were analysed by GC/MS. 46 components were identified, comprising 96.6% of the essential oil. Monoterpenes (78.9%) were the main class of the identified components followed by a minor proportion of sesqui-<br />terpenes (11%). Oxygenated monoterpenes (75.3%) were the major subclass of volatile oil components with menthone (38.7%), menthol (11.3%), neomenthol (10.5%), and pulegone (6.8%) as major compounds. Sesquiterpene hydrocarbons (10.6%) were the highlighted subclass of 15 carbons sesquiterpenoidal compounds with (E)-caryophyllene (4.9%) and &beta;-cubebene (2.5%) as their principle representatives. Furthermore, menthyl acetate (C<sub>12</sub> acetylated monoterpene derived compound) was contained considerable amounts (5.2%) in the essential oil. In total, volatile oil composition of M. pulegium L. plants studied in the present experiment was characterised as a new menthone type with appreciable amounts of menthol and neomenthol, and it could be used as a potential source of these high value monoterpenes in pharmaceutical and food industries.

scholarly journals Profiling versus fingerprinting analysis of sesquiterpene hydrocarbons for the geographical authentication of extra virgin olive oils

2020 ◽  
Vol 307 ◽  
pp. 125556 ◽  
Author(s):  
Beatriz Quintanilla-Casas ◽  
Sofia Bertin ◽  
Kerstin Leik ◽  
Julen Bustamante ◽  
Francesc Guardiola ◽  
...  
Keyword(s):  
Virgin Olive Oils ◽  
Fingerprinting Analysis ◽  
Olive Oils ◽  
Sesquiterpene Hydrocarbons ◽  
Geographical Authentication

ANTIOXIDANT AND ANTITYROSINASE ACTIVITIES OF PIPER MAINGAYI HK. ESSENTIAL OILS

2015 ◽  
Vol 78 (1) ◽  
Author(s):  
Nur Athirah Hashim ◽  
Farediah Ahmad ◽  
Deny Susanti
Keyword(s):  
Essential Oils ◽  
Chemical Components ◽  
Caryophyllene Oxide ◽  
Volatile Oils ◽  
Ms Analysis ◽  
Sesquiterpene Hydrocarbons ◽  
Fruit Oil

The study was aimed to investigate the chemical components of stem and fruit volatile oils of Piper. maingayi Hk. with their antioxidant and antityrosinase activities. GC and GC-MS analysis of the essential oils obtained from the fresh stem and fruit of P. maingayi Hk. resulted in the identification of 34 and 18 components accounting for 83.6% and 78.7% of the total amount, respectively. Sesquiterpene hydrocarbons and oxygenated sesquiterpenes were the most highly represented classes as the former ranging from 64.7% to 70.7%, and the latter varying from 7.4% to 8.6%. The main constituents of the stem oil were: β-caryophyllene (26.2%), a-cedrene (8.4%), caryophyllene oxide (6.7%) and cis-calamenene (6.2%), while the fruit oil was dominated by δ-cadinene (22.6%), β-caryophyllene (18.8%), a-copaene (11.2%) and a-cadinol (7.1%). The stem and fruit of P. maingayi oils showed significant value for antioxidant and antityrosinase activities. 

scholarly journals Chemical composition and insecticidal activity of Garcinia gardneriana (Planchon & Triana) Zappi (Clusiaceae) essential oil

2021 ◽  
Vol 20 (5) ◽  
pp. 503-514
Author(s):  
Carla Maria Mariano Fernandez ◽  
◽  
Fabiana Brusco Lorenzetti ◽  
Sirlene Adriana Kleinubing ◽  
Joao Paulo Pinguello de Andrade ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Chemical Analysis ◽  
Essential Oil ◽  
Immersion Test ◽  
Acaricidal Activity ◽  
Gas Chromatography Mass Spectrometry ◽  
Larvicidal Effect ◽  
Sesquiterpene Hydrocarbons

The present study aimed to analyze the chemical composition of the essential oil from Garcinia gardneriana (Planchon & Triana) Zappi leaves and fruits, and to determine its acaricidal activity on Rhipicephalus microplus by larval packet test and larvicidal action on Aedes aegypti by larval immersion test. The chemical analysis of the essential oil by gas chromatography-mass spectrometry identified sesquiterpene hydrocarbons and oxygenated sesquiterpenes in bacupari leaves and fruits, and α-cedrene, α-chamigrene, α-trans-bergamotene, and β-curcumene as major compounds. Essential oil from leaves of G. gardneriana presented acaricidal activity on R. microplus (LC50 = 4.8 mg/mL; LC99 = 10.8 mg/mL) and larvicidal effect on A. aegypti (LC50 = 5.4 mg/mL; LC99 = 11.6 mg/mL), whereas essential oil from the fruits of G. gardneriana showed LC50 = 4.6 mg/mL and LC99 = 8.9 mg/mL against R. microplus and LC50 = 6.4 mg/mL and LC99 = 13.9 mg/mL against A. aegypti. These results thus demonstrate the potential acaricidal and larvicidal activity of essential oil of G. gardneriana, offering new perspectives for the realization of bioassays from this essential oil.

scholarly journals Chemical Composition of Vernonia albicans Essential Oil from India

2014 ◽  
Vol 9 (7) ◽  
pp. 1934578X1400900
Author(s):  
Rajesh K. Joshi
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Flame Ionization Detector ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Aerial Parts ◽  
Sesquiterpene Hydrocarbons ◽  
Total Oil

The chemical composition of the hydro-distilled essential oil obtained from the flowering aerial parts of Vernonia albicans DC. (Asteraceae) was analyzed by gas chromatography equipped with a flame ionization detector (GC-FID) and gas chromatography coupled with a mass spectrometry (GC/MS). Thirty-nine compounds have been identified, representing 97.5% of the total oil. The major constituents were β-caryophyllene (34.3%), γ-amorphene (19.5%), 9-epi-β-caryophyllene (6.9%), and α-pinene (6.9%). The oil was found to be rich in sesquiterpene hydrocarbons (73.9%).

scholarly journals Chemical Composition of the Essential Oil of Croton bonplandianus from India

2014 ◽  
Vol 9 (2) ◽  
pp. 1934578X1400900
Author(s):  
Rajesh K. Joshi
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Gas Chromatography Mass Spectrometry ◽  
Caryophyllene Oxide ◽  
Aerial Parts ◽  
Sesquiterpene Hydrocarbons ◽  
Germacrene D ◽  
Total Oil

The essential oil obtained from the aerial parts of Croton bonplandianus Baill. was analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). A total of 37 compounds have been identified, representing 96.2% of the total oil. The main constituents were identified as β-caryophyllene (16.7%), germacrene D (14.7%), borneol (8.3%), Z-β-damascenone (6.(%), isobornyl acetate (6.2%), α-humulene (6.1%), germacrene A (5.2%) and caryophyllene oxide (4.5%). The oil was rich in sesquiterpene hydrocarbons (60.1%).

scholarly journals Volatiles of Tanacetum macrophyllum Obtained by Different Extraction Methods

2018 ◽  
Vol 13 (7) ◽  
pp. 1934578X1801300
Author(s):  
Biljana Nikolić ◽  
Milić Matović ◽  
Marina Todosijević ◽  
Jovana Stanković ◽  
Mirjana Cvetković ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Extraction Methods ◽  
Static Headspace ◽  
Oxygenated Monoterpenes ◽  
Ms Analysis ◽  
Sesquiterpene Hydrocarbons ◽  
Germacrene D ◽  
Headspace Gc

Terpene compounds of Tanacetum macrophyllum as 1) essential oils, obtained by hydrodistillation (HD), 2) essential oil extracts, obtained by simultaneous hydrodistillation and extraction (SDE) and 3) volatiles, obtained by Static Headspace GC-MS analysis (HS) were processed. Monoterpenes were the most dominant (49.2%, 49.5% and 90.4%, respectively). Profiles of essential oils obtained by HD and SD were quite similar, with oxygenated monoterpenes (39.3% and 39.4%) being the most abundant. In HS volatiles oxygenated monoterpenes also dominated (57.4%). Total sesquiterpenes were abundant in HD and SDE volatiles (38.2% and 39.2%, resp.), where sesquiterpene hydrocarbons were prevalent (27.3% and 28.7%, resp.). Germacrene D was dominant in HD and SDE oils (22.0% and 23.3%, resp.) and 1,8-cineole in HS volatiles (34.3%). To our knowledge, this is the first use of Headspace technique on T. macrophyllum. Furthermore, this is the first comparison of different techniques of volatile extraction in T. macrophyllum.

scholarly journals Endemic Veronica saturejoides Vis. ssp. saturejoides–Chemical Composition and Antioxidant Activity of Free Volatile Compounds

Plants ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 1646
Author(s):  
Marija Nazlić ◽  
Dario Kremer ◽  
Renata Jurišić Grubešić ◽  
Barbara Soldo ◽  
Elma Vuko ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Essential Oils ◽  
Volatile Compounds ◽  
Glandular Trichomes ◽  
Stalk Cell ◽  
Total Phenolic ◽  
Hexahydrofarnesyl Acetone ◽  
Sesquiterpene Hydrocarbons ◽  
Scanning Electron Microscope Investigation ◽  
Fatty Aldehydes

Chemical profile and antioxidant activity of the species Veronica saturejoides Vis. ssp. saturejoides (Plantaginaceae)—which is endemic to Croatia, Bosnia and Herzegovina and Montenegro —were investigated. Volatile compounds produced by glandular trichomes (composed of one stalk cell and two elliptically formed head cells according to scanning electron microscope investigation) were isolated from the plants collected in two locations. Additionally, as a part of specialized metabolites, total polyphenols, total tannins, total flavonoids and total phenolic acids were determined spectrophotometrically. In the lipophilic volatile fractions-essential oils, the most abundant compounds identified were hexahydrofarnesyl acetone, caryophyllene oxide and hexadecanoic acid. In total, the class of oxygenated sesquiterpenes and the group of fatty aldehydes, acids and alcoholic compounds dominated in the essential oils. In the hydrophilic volatile fractions-hydrosols, the most abundant compounds identified were trans-p-mentha-1(7),8-dien-2-ol, allo-aromadendrene and (E)-caryophyllene. A group of oxygenated monoterpenes and the sesquiterpene hydrocarbons dominated in the hydrosols. Antioxidant activity of essential oils and hydrosols was tested with two methods: 2,2′-diphenyl-1-picrylhydrazyl (DPPH) and oxygen radical absorbance capacity (ORAC). Essential oils showed higher antioxidant activity than hydrosols and showed similar antioxidant activity to Rosmarinus officinalis essential oil. Obtained results demonstrate that this genus is a potential source of volatiles with antioxidant activity.

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