Sesquiterpene Hydrocarbons of Commercial Copaiba Balsam and American Cedarwood Oils

1967 ◽  
Vol 50 (6) ◽  
pp. 1304-1313
Author(s):  
John A Wenninger ◽  
Ronald L Yates ◽  
Meyer Dolinsky
Keyword(s):  
Gas Chromatography ◽  
Silver Nitrate ◽  
Column Chromatography ◽  
Infrared Spectra ◽  
Chromatographic Retention ◽  
Retention Data ◽  
Sesquiterpene Hydrocarbons

Abstract The sesquiterpene hydrocarbons of commercial samples of copaiba balsam and American cedarwood oils were separated by a combination of techniques including silver nitrate adduction, column chromatography on alumina, distillation, and gas chromatography. Components were identified by their infrared spectra. Of the 24 sesquiterpene hydrocarbons detected in copaiba balsam oil, 18 were identified as follows: δ-elemcne, copaene, β-cubebene, cyperene, α-bergamotene, β-elemene, caryophyllene,γ -elemene, β-farnesene, allo-aromadendrene, α-, β-humuIene, β-bisabolene, α-selinene, β-selinene, δ-cadinene, ar-curcumene, γ -cadinene, calamenene, and a-cubebene (tentatively identified). The following sesquiterpene hydrocarbons were identified in American cedarwood oil: β-eIemene, acedrene, caryophyllene, thujopsene, α-,βhumulene, "acorene," valencene, cuparene, a cuprenene, and two additional hydrocarbons (tentatively identified). Gas chromatographic retention data are reported for 27 of the sesquiterpene hydrocarbons isolated

Constituents of Opoponax Oil: Sesquiterpene Hydrocarbons

1969 ◽  
Vol 52 (6) ◽  
pp. 1155-1161
Author(s):  
John A Wenninger ◽  
Ronald L Yates
Keyword(s):  
Gas Chromatography ◽  
Acetic Acid ◽  
Nmr Spectroscopy ◽  
Silver Nitrate ◽  
Column Chromatography ◽  
Sodium Acetate ◽  
Ir And Nmr Spectroscopy ◽  
Sesquiterpene Hydrocarbons

Abstract Sesquiterpene hydrocarbons of opoponax oil were studied, using a combination of separat i on techniques which included column chromatography on alumina, silver nitrate adduction, and gas chromatography. Compounds isolated were identified by IR and NMR spectroscopy. Eighteen sesquiterpene hydrocarbons were identified as follows: Δ-elemene, α-cubebene, α-copaene, cis-α-bergamotene, β-elemene, α-santalene, trans-α-bergamotene, caryophyllene, γ-elemene, epi-β-santalene, β-santalene, humulene, γ-muurolene, trans-α-bisabolene, β-bisabolene, ar-curcumene, Δ-cadinene, and γ-cadinene. The major products obtained when hydrocarbons are regenerated from bisabolene trihydrochloride, using sodium acetate and acetic acid as reagents, were also characterized and identified as cis-α-bisabolene and β-bisabolene.

High Resolution Infrared Spectra of Some Naturally Occurring Sesquiterpene Hydrocarbons

1967 ◽  
Vol 50 (6) ◽  
pp. 1313-1335 ◽  
Author(s):  
John A Wenninger ◽  
Ronald L Yates ◽  
Meyer Dolinsky
Keyword(s):  
High Resolution ◽  
Essential Oils ◽  
Infrared Spectra ◽  
Internal Standard ◽  
Chromatographic Retention ◽  
Chromatographic Techniques ◽  
Naturally Occurring ◽  
Sesquiterpene Hydrocarbons

Abstract High resolution infrared spectra in the region from 4000 to 300 cm- 1 are presented for 36 sesquiterpene hydrocarbons. The compounds were isolated from commercial essential oils and purified by gas chromatographic techniques. The gas chromatographic retention times relative to isodurene as an internal standard and the five strongest infrared hands in the 1250— 300 cm- 1 region are also tabulated

Chemical Constituents of the Essential Oils of Aroliaceae and Lauraceae Families

1975 ◽  
Vol 30 (5-6) ◽  
pp. 421-421
Author(s):  
Nanao Hayashi ◽  
Kôki Yokochyô ◽  
Hisashi Komae
Keyword(s):  
Gas Chromatography ◽  
Essential Oils ◽  
Column Chromatography ◽  
Infrared Spectra ◽  
Steam Distillation ◽  
Chemical Constituents ◽  
Preparative Gas Chromatography ◽  
The Individual

Abstract In the course of the chemosystematic study of Aroliaceae and Lauraceae families, the leaf oils of some plants were investigated. The leaf oils were obtained by steam distillation of the fresh leaves. The individual constituents were isolated by column chromatography followed by preparative gas chromatography, and identified by gas chromatography and by infrared spectra.

Constituents of Olibanum Oil: Sesquiterpene Hydrocarbons

1970 ◽  
Vol 53 (5) ◽  
pp. 941-948
Author(s):  
Ronald L Yates ◽  
John A Wenninger
Keyword(s):  
Ir Spectra ◽  
Silver Nitrate ◽  
Column Chromatography ◽  
Nmr Spectra ◽  
Commercial Sample ◽  
Sesquiterpene Hydrocarbons

Abstract The sesquiterpene hydrocarbons of a commercial sample of olibanum oil were isolated and purified by a combination of techniques, including column chromatography, silver nitrate adduction, distillation, and preparative GLC. Most components were identified by their IR spectra. In some cases NMR spectra were used for identification. A total of 27 sesquiterpene hydrocarbons were identified: δ-elemene, α-cubebene, α-ylangene, α-copaene, β-bourbonene, α-gurjunene, β-elemene, transa- α-bergamotene, α-guaiene, β-ylangene, caryophyllene, β-copaene, aromadendrene, thujopsene, allo-aromadendrene, α–+ β-humulene, selina-4,ll-diene, γ-muurolene, α-muurolene,β-selinene, α-selinene, δ-cadinene, γ-cadinene, “cubenene”, β-cadinene, calamenene, and α-calacorene. The identification of β-ylangene and β1-cadinene are tentative.

scholarly journals Gas-Liquid Chromatographic Retention Data for Some isoThiocyanates.

1961 ◽  
Vol 15 ◽  
pp. 1223-1230 ◽  
Author(s):  
Aage Jart ◽  
Knud Engel ◽  
Robert Nilsson ◽  
Gert E. Olsen ◽  
Christian Pedersen ◽  
...  
Keyword(s):  
Chromatographic Retention ◽  
Retention Data ◽  
Liquid Chromatographic

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.

Chemical Identification of Meat

1966 ◽  
Vol 49 (4) ◽  
pp. 877-880
Author(s):  
H R Cook ◽  
John D Sturgeon
Keyword(s):  
Gas Chromatography ◽  
Unsaponifiable Matter ◽  
Column Chromatography ◽  
Chemical Identification

Abstract Horse, pork, and beef fat are identified by gas chromatography of the unsaponifiable matter which is first fractionated by column chromatography. Fractions two and three give peaks which identify the fats.

The Effect of Various UHT Processing Parameters and Storage Conditions on the Saturated Aldehydes In Half-and-Half Cream

1991 ◽  
Vol 54 (2) ◽  
pp. 109-112 ◽  
Author(s):  
R.K. HUTCHENS ◽  
A.P. HANSEN
Keyword(s):  
Gas Chromatography ◽  
High Temperature ◽  
Column Chromatography ◽  
Steam Injection ◽  
Processing Parameters ◽  
Storage Conditions ◽  
Tetra Pak ◽  
And Storage ◽  
Ultra High Temperature

Raw cream was standardized to 10% fat and processed by ultra-high-temperature (UHT) steam injection at 149°C for 20 s, 149°C for 3.4 s, 138°C for 20 s, and 143°C for 7 s, then aseptically packaged by a Tetra Pak AB3-250 filler. Packages were stored for 12 months at 24°C and analyzed at 0, 1, 3, 6, and 12 months. Fat-soluble carbonyls were extracted from the UHT cream with carbonyl-free hexanes and converted to their 2,4-dinitrophenyl-hydrazone derivatives. Alkanal hydrazones were separated by column chromatography into pure fractions. Spectrophotometry and gas chromatography were used to identify the alkanals. Butanal, hexanal, heptanal, nonanal, and decanal were identified and found to decrease in concentration during storage.

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%).

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