scholarly journals THE ESSENTIAL OIL OF ILLICIUM ANISATUM LINN.

1966 ◽  
Vol 44 (21) ◽  
pp. 2461-2464 ◽  
Author(s):  
W. B. Cook ◽  
A. S. Howard
Keyword(s):  
Liquid Chromatography ◽  
Essential Oil ◽  
Sesquiterpene Hydrocarbon ◽  
Striking Difference ◽  
Gas Liquid Chromatography ◽  
Star Anise ◽  
Commercial Oil

The oil of the Japanese star anise tree, Illiciumanisatum Linn., was analyzed by gas–liquid chromatography. The major constituents were found to be cineole (18.1%), linalool (10.1%), methyleugenol (9.8%), α-terpenyl acetate (6.8%), safrole (6.6%), and a sesquiterpene hydrocarbon of unknown constitution (7.2%). The composition of this oil differs widely from that of the commercially used star anise oil obtained from Illiciumverum Hooker. The most striking difference between the two oils is found in the anethole content, which constitutes 88% of the commercial oil but only 1.2% of the oil here investigated.

Antifungal Activity of the Essential Oil of Origanum syriacum L.

1995 ◽  
Vol 58 (10) ◽  
pp. 1147-1149 ◽  
Author(s):  
RASHA K. DAOUK ◽  
SHAWKY M. DAGHER ◽  
ELSA J. SATTOUT
Keyword(s):  
Liquid Chromatography ◽  
Antifungal Activity ◽  
Essential Oil ◽  
Inhibitory Action ◽  
Inhibitory Concentration ◽  
Volatile Oil ◽  
Gas Liquid Chromatography ◽  
Penicillium Species ◽  
Origanum Oil ◽  
Yeast Extract Sucrose

The volatile oil of the Lebanese Za'atar (Origanum syriacum L.) was characterized for its thymol and carvacrol content using gas-liquid chromatography. These two compounds constituted the major components of the oil and were present in equal proportions of 30% in the volatile oil extracted from the leaves and shoot tips of the Origanum plant during the preflowering stage. The percentage of carvacrol in the essential oil increased to 62% after flowering and maturation, while the concentration of thymol decreased to 14%. Origanum oil extracted from plants collected during midseason was evaluated for its antifungal activity against Aspergillus niger, Fusarium oxysporum, and Penicillium species. The oil exhibited strong inhibitory action against the three fungi tested. The minimum inhibitory concentration (MIC) of the oil was found to be 0.1 μl/ml of yeast extract sucrose broth for the fungi tested.

GAS–LIQUID CHROMATOGRAPHY OF TERPENES: PART VIII. THE VOLATILE OIL OF TANACETUM VULGARE L.

1963 ◽  
Vol 41 (7) ◽  
pp. 1737-1743 ◽  
Author(s):  
E. von Rudloff
Keyword(s):  
Liquid Chromatography ◽  
Chemical Composition ◽  
Volatile Oil ◽  
Gas Liquid Chromatography ◽  
Minor Components ◽  
Tanacetum Vulgare ◽  
Retention Characteristics ◽  
Local Plants ◽  
Methylene Group ◽  
Commercial Oil

The chemical composition of the commercial oil of tansy and of that obtained from a local tansy species was determined by means of gas–liquid chromatography. Both oils contained d-isothujone as the major component (68.5%, 58%). The commercial oil contained fairly large amounts of l-camphor (13.9%), whereas that from local plants had only traces of camphor and 19.8% of l-thujone. The minor components isolated and identified in both oils were l-α -pinene, l-camphene, d-sabinene, d-limonene, 1:8-cineole, γ-terpinene, p-cymene, d-terpinen-4-ol, l-carvotanacetone, and l-borneol. Small amounts of α-thujene, β-pinene, α-terpinene, terpinolene, neoisothujyl and isothujyl alcohols, and dihydrocarvone were identified by retention characteristics only. Car-4-ene, isomeric alloocimenes, and carvomenthone may also be present. An unknown, crystalline monoterpene alcohol with a terminal methylene group was isolated in small amounts. A sesquiterpene (3.7%) was obtained from the oil of local plants.Prefractionation of these oils by fractional distillation resulted in extensive isomerization of isothujone to dl-carvotanacetone. Such a rearrangement was not encountered during prefractionation by preparative gas–liquid chromatography.

GAS–LIQUID CHROMATOGRAPHY OF TERPENES: PART IX. THE VOLATILE OIL OF THE LEAVES OF JUNIPERUS SABINA L.

1963 ◽  
Vol 41 (11) ◽  
pp. 2876-2881 ◽  
Author(s):  
E. Von Rudloff
Keyword(s):  
Liquid Chromatography ◽  
Chemical Composition ◽  
Methyl Ester ◽  
Volatile Oil ◽  
Gas Liquid Chromatography ◽  
Chromatographic Technique ◽  
Citronellic Acid ◽  
Pungent Odor ◽  
Juniperus Sabina ◽  
Commercial Oil

The chemical composition of the volatile oil of the leaves of local savin juniper and of commercial oil of savin was determined by an improved gas chromatographic technique. Both oils contain d-sabinyl acetate (38, 37.5%) and d-sabinene (30.5, 26%) as the major constituents. Smaller amounts of d,α-pinene, d-myrcene, d-limonene, γ-terpinene, p-cymene, d-isothujone, d-terpinen-4-ol, d-sabinol, d-citronellol, d-cadinene, and l-elemol were isolated. Trace amounts of α-thujene, camphene, α-terpinene, 1,8-cineole, terpinolene, thujone, geraniol, a cadinene isomer, and δ-cadinol were tentatively identified. A fraction having the typical pungent odor of juniper leaves was isolated, but it was found to consist mainly of the methyl ester of d-citronellic acid. Several unidentified oxygenated sesquiterpenes and a phenol ether were isolated in trace amounts.Some phylogenetic relationships with other thujone-bearing oils analyzed in this series are discussed.

A study of asphalt-aggregate interactions using inverse gas-liquid chromatography

1974 ◽  
Vol 24 (11) ◽  
pp. 645-654 ◽  
Author(s):  
F. Alan Barbour ◽  
Richard V. Barbour ◽  
J. Claine Peterson
Keyword(s):  
Liquid Chromatography ◽  
Gas Liquid Chromatography

GASCHROMATOGRAPHIC DETERMINATION OF STEROIDS IN THE URINE OF PATIENTS WITH CUSHING'S SYNDROME

1971 ◽  
Vol 67 (2) ◽  
pp. 303-315 ◽  
Author(s):  
A. J. Moolenaar ◽  
A. P. van Seters
Keyword(s):  
Liquid Chromatography ◽  
Cushing’S Syndrome ◽  
Normal Subjects ◽  
Diagnostic Value ◽  
Cushing's Syndrome ◽  
Gas Liquid Chromatography ◽  
Obese Subjects

ABSTRACT The 17-oxosteroids were estimated in the urine of 27 patients with Cushing's syndrome by gas-liquid chromatography (G. L. C.). The values of the various steroid fractions are compared with those of normal subjects, patients with thyrotoxicosis and obese subjects. The effect of the age of the patients on the diagnostic value of the invidual 17-oxosteroids and their ratios is discussed.

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