scholarly journals Volatile Metabolites in Liverworts of Ecuador

Metabolites ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 92 ◽  
Author(s):  
Eduardo Valarezo ◽  
Oswaldo Tandazo ◽  
Kathia Galán ◽  
Jandry Rosales ◽  
Ángel Benítez
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Volatile Compounds ◽  
Gas Chromatography Mass Spectrometry ◽  
Caryophyllene Oxide ◽  
Ionization Detector ◽  
Volatile Metabolites ◽  
Flame Ionization ◽  
Germacrene D

Volatile metabolites from Frullania brasiliensis Raddi, Herbertus juniperoideus (Sw.) Grolle, Leptoscyphus hexagonus (Nees) Grolle, and Syzygiella anomala (Lindenb. & Gottsche) Steph collected in the south of Ecuador were investigated. Volatile secondary metabolites were extracted by hydrodistillation and analyzed by gas chromatography/flame ionization detector (GC/FID) and Gas chromatography/Mass spectrometry (GC/MS). Sixty-seven volatile compounds were identified in the four species, which represent between 80.12–90.17% of the total chemical composition. The major components were τ-muurolol (32.14%) and Germacrene-D (11.98%) in the essential oil of F. brasiliensis, bicyclogermacrene (18.23%), and Caryophyllene oxide (15.29%) in the oil of H. juniperoideus, Cabreuva oxide D (33.77%) and Elemol (18.55%) in the oil of Leptoscyphus hexagonus, and Silphiperfola-5,7(14)-diene (25.22%) and Caryophyllene oxide (8.98%) in the oil of Syzygiella anomala. This is the first report on volatile compounds for the species Herbertus juniperoideus, Leptoscyphus hexagonus, and Syzygiella anomala.

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 Essential Oil Constituents of Etlingera yunnanensis and Hornstedtia sanhan grown in Vietnam

2015 ◽  
Vol 10 (2) ◽  
pp. 1934578X1501000 ◽  
Author(s):  
Dao T. M. Chau ◽  
Do N. Dai ◽  
Tran M. Hoi ◽  
Tran H. Thai ◽  
Tran D. Thang ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Ionization Detector ◽  
Methyl Chavicol ◽  
Flame Ionization ◽  
Germacrene D ◽  
Leaf Oil ◽  
Different Parts

The chemical composition of the essential oils obtained from the hydrodistillation of different parts of Etlingera yunnanensis (T.L. Wu &S.J. Chen) R.M. Sm. and Hornstedtia sanhan M.F. Newman (Zingiberaceae) grown in Vietnam are reported. The analysis was performed by means of a gas chromatography-flame ionization detector (GC-FID) and gas chromatography coupled with mass spectrometry (GC-MS). The essential oil of the leaves of E. yunnanensis comprised mainly germacrene D (19.2%), β-pinene (11.6%), and α-amorphene (11.2%), while that of the stems was rich in β-pinene (23.7%), 1,8-cineole (11.0%) and α-pinene (9.6%). The major components of the root oil of E. yunnanensis were β-pinene (31.9%), α-pinene (13.7%) and 1,8-cineole (9.4%). However, α-pinene (25.9%, 36.3% and 14.1% for leaves, stems and roots, respectively), β-pinene (9.7%, 11.8% and 7.2% for leaves, stems and roots, respectively) and limonene (22.1%, 24.6% and 16.2% for leaves, stems and roots, respectively) were the major compounds of H. sanhan. In addition, α-humulene (15.9%) was present in larger amounts in the leaf oil while the root oil contained the largest proportion of methyl chavicol (43.7%).

scholarly journals Chemical Composition of the Essential Oil of Lepidagathis Fasciculata from Bondla Forest of Goa, India

2013 ◽  
Vol 8 (8) ◽  
pp. 1934578X1300800
Author(s):  
Rajesh K. Joshi
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Aerial Parts ◽  
Sesquiterpene Hydrocarbons ◽  
Germacrene D ◽  
Total Oil

The hydro-distilled essential oil obtained from the flowering aerial parts of Lepidagathis fasciculata Nees was analyzed by gas chromatography equipped with a flame ionization detector (GC-FID) and gas chromatography coupled with mass spectrometry (GC/MS). A total of 38 compounds have been identified, representing 91.2% of the total oil. The major constituents were δ-cadinene (14.4 %), γ-curcumene (9.8%), sandaracopimarinal (6.6%), germacrene D-4-ol (6.1%), cembrene (5.0%), β-calacorene (3.6%), ar-curcumene (3.3%), trans–4,10-epoxy-amorphane (3.2%), abietatriene (2.9%), and α-cubebene (2.8%). The oil was rich in sesquiterpene hydrocarbons (43.8%).

Chemical Composition of the Essential Oil From Minthostachys acris Schmidt-Leb. Grown in the Peruvian Andes

2019 ◽  
Vol 14 (7) ◽  
pp. 1934578X1985749
Author(s):  
Jorge A. Pino ◽  
María Milagros Dueñas-Mendoza ◽  
Leoncio Solís-Quispe
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Steam Distillation ◽  
Gas Chromatography Mass Spectrometry ◽  
Ionization Detector ◽  
Peruvian Andes ◽  
Flame Ionization ◽  
Aerial Parts

The chemical composition of the essential oil from aerial parts of Minthostachys acris Schmidt-Leb. grown in Cuzco was studied. A total of 59 volatile compounds were identified by gas-chromatography-flame ionization detector and gas chromatography-mass spectrometry in the essential oil obtained by steam distillation, of which the most prominent were pulegone (54.4%), cis-menthone (11.0%), and thymol (6.3%).

scholarly journals Chemical profile of Taxodium distichum winter cones

2017 ◽  
pp. 77-83
Author(s):  
Nina Djapic ◽  
Mihailo Ristic
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Retinoic Acid ◽  
Taxodium Distichum ◽  
Gas Chromatography Mass Spectrometry ◽  
Bornyl Acetate ◽  
Caryophyllene Oxide ◽  
Ionization Detector ◽  
Chemical Profile ◽  
Flame Ionization

This work is concerned with the chemical profile of Taxodium distichum winter cones. The extract obtained after maceration in absolute ethanol was subjected to qualitative analysis by gas chromatography/mass spectrometry and quantification was done by gas chromatography/ flame ionization detector. The chromatogram revealed the presence of 53 compounds, of which 33 compounds were identified. The extract contained oxygenated monoterpenes (12.42%), sesquiterpenes (5.18%), oxygenated sesquiterpenes (17.41%), diterpenes (1.15%), and oxygenated diterpenes (30.87%), while the amount of retinoic acid was 0.32%. Monoacylglycerols were detected in the amount of 4.32%. The most abundant compounds were: caryophyllene oxide (14.27%), 6,7-dehydro-ferruginol (12.49%), bornyl acetate (10.96%), 6- deoxy-taxodione (9.50%) and trans-caryophyllene (4.20%).

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 FROM LEAVES OF CALLICARPA ARBOREA ROXB. GROWING IN VIETNAM

2021 ◽  
Vol 58 (6A) ◽  
pp. 280
Author(s):  
Hung Huy Nguyen ◽  
Dai Ngoc Do ◽  
Prabodh Satyal ◽  
Chung Thanh Nguyen ◽  
Nguyen Van Bui ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Gas Chromatography Mass Spectrometry ◽  
Caryophyllene Oxide ◽  
Chromatography Mass Spectrometry ◽  
First Time

The essential oil from the leaves of Callicarpa arborea Roxb. growing wild in Vietnam, was obtained by hydrodistillation and analyzed by gas chromatography – mass spectrometry. The major constituents of leaves of C. arborea were β-selinene (23.9%), ar-turmerone (17.5%) and α-copaene (8.9%), with lesser concentrations of caryophyllene oxide (4.9%) and ar-turmerol (3.9%). The chemical composition of this essential oil sample is being reported for the first time.

Characterization of Agarwood Incense using Gas Chromatography - Mass Spectrometry (GC-MS) coupled with Solid Phase Micro Extraction (SPME) and Gas Chromatography - Flame Ionization Detector (GC-FID)

2015 ◽  
Vol 12 (2) ◽  
pp. 67
Author(s):  
Nurlaila Ismail ◽  
Mastura Lbrahim ◽  
Seema Zareen ◽  
Mohd Hezri Fazalul Rahiman ◽  
Saiful Nizam Tajuddin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Solid Phase ◽  
Flame Ionization Detector ◽  
Gas Chromatography Mass Spectrometry ◽  
Solid Phase Micro Extraction ◽  
Ionization Detector ◽  
Polydimethyl Siloxane ◽  
Flame Ionization ◽  
Chromatography Mass Spectrometry

This paper presents the application of Solid Phase Micro Extraction (SPME) coupled with Gas Chromatography-Mass Spectrometry (GC-MS) and Gas Chromatography-Flame Ionization Detector (GC-FID) to charaterize agarwood incense. The work involved three types of SPME fibres at 30 minutes sampling time. The fibres are 50/30 µm divinylbenzene-carboxen­polydimethysiloxane (DVB-CAR-PDMS), 65 µm polydi methylsiloxane­divinylbenzene (PDMS-DVB) and 85 µm carboxen-polydimethyl siloxane (CAR-PDMS). The results showed that among many compounds extracted by GC-MS coupled with SPME, six compounds were found significantly presence in high quality aganvood incense due to their high percentage area (%). They are beta-maaliene, alpha-elemol, beta-selinene, 10-epi-gamma-eudesmol, agarospirol and caryophellene oxide. The finding offers a new approach for establishing the volatile profile of agarwood incense components which is beneficial for agarwood grading and discrimination.

Frontline ® immunochromatographic device for on-site urine testing of amphetamines: laboratory validation using authentic specimens

2000 ◽  
Vol 37 (2) ◽  
pp. 199-204 ◽  
Author(s):  
O Beck ◽  
M Kraft ◽  
M R Moeller ◽  
B L Smith ◽  
S Schneider ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Close Agreement ◽  
Flame Ionization Detector ◽  
Gas Chromatography Mass Spectrometry ◽  
Ionization Detector ◽  
Test Device ◽  
Flame Ionization ◽  
Colour Scale ◽  
Urine Testing

We evaluated a new test device for amphetamines and methamphetamines (Frontline ®, cut-off limit 300 ng/mL) using authentic clinical and forensic specimens. The device is based on immunochromatography and is dipped into urine and read visually by comparison with a colour scale after a few minutes. A total of 658 specimens were tested by comparing results of the screening procedure with established immunoassays. Discordant results were further investigated by gas chromatography- mass spectrometry or gas chromatography (with flame ionization detector). The Frontline device had a sensitivity of 93% and a specificity of 98%. When specimens were classified by urine amphetamine concentration, close agreement was obtained at concentrations below 150 ng/mL and above 1000 ng/mL. A small number of specimens with amphetamine concentrations between 300 and 1000 ng/mL tested negative in the Frontline test. This finding could to some extent be explained by the enantioselectivity of the antibodies in the Frontline test to d-amphetamine. We conclude that the performance of the Frontline test device for amphetamines is adequate for presumptive clinical and forensic screening.

scholarly journals GC/MS Analysis of the Essential Oil of Leucas indica from India

2014 ◽  
Vol 9 (11) ◽  
pp. 1934578X1400901 ◽  
Author(s):  
Rajesh K. Joshi
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Ionization Detector ◽  
Flame Ionization ◽  
Aerial Parts ◽  
Sesquiterpene Hydrocarbons ◽  
Total Oil ◽  
First Time

The aim of the present study was to investigate and identify the essential oil constituents of Leucas indica (L.) R.Br. (Lamiaceae). The chemical composition of the hydro-distilled essential oil was obtained from the flowering aerial parts of L. indica for the first time. The oil was analyzed by gas chromatography equipped with flame ionization detector (GC-FID) and gas chromatography coupled with mass spectrometry (GC/MS). Fifty-six compounds were identified, representing 99.1% of the total oil. The main constituents were β-caryophyllene (51.1%) and α-caryophyllene (10.2%). The oil was found to be rich in sesquiterpene hydrocarbons (71.8%).

Sign in / Sign up

Export Citation Format

Share Document