摘要:

The chemical composition of the essential oil ofAmyris elimiferaL. was studied by GC/MS. Forty-one components have been identified, of which β-caryophyllene (37.8%), caryophyllene oxide (13-0%) and α-eudesmol (16.7%) are the major ones.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712037

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The phylogenetic relationships of the threeAbiesspecies grown in Balkan Peninsula were investigated through their volatile secondary metabolites. The leaf oil of a statistically representative sample of sympatricAbies alba, A. cephalonicaandA. borisii-registrees was obtained and analyzed by means of GC and GC/MS. Forty components were identified and quantified on the basis of their retention indices, their mass spectra characteristics and relative peak areas. The majority of the investigated oils were found to consist of monoterpenes. The major constituents were the same in all studied species but their content varied significantly, thus allowing the assignment of characteristic chemical profiles based on their contribution rank. The variation of the oil constituents and their possible taxonomic significance is discussed.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712038

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The essential oil of the leaves ofCurcuma aeruginosaRoxb. from South India was investigated by GC and GC/MS. More than 50 components have been identified with 1,8-cineole (17.7%), curzerenone (10.5%), furanogermenone (7.8%), camphor (7.5%), (Z)-3-hexenol (5.8%), furanodienone (5.1%), curcumenol (4.3%), isocurcumenol (3.7%) and β-elemene (3.3%) as main compounds.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712039

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The peel oil of Kagzi lime (Citrus aurantifoliaSwingle) was isolated by hydrodistillation at six ripening stages and analyzed by GC. Nineteen components were identified and some important aroma components were observed at higher concentrations than normally reported such as neral and geranial (7.8%), geraniol (7.3%) and citronellol (1.2%), particularly in green fruits. A decrease in oxygenated monoterpenes and an increase in monoterpene hydrocarbons was observed during ripening. The peel of mature green lime fruits was found rich in organoleptically important oxygenated constituents (29.7%).

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712040

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The chemotype composition ofAchillea crithmifoliapopulations were studied in selfed and crossed progenies in order to gain information on their genetical background, with special respect to the main essential oil components: camphor, 1,8-cineole and borneol. Distilled flower oils of individual samples of the original population, 36 self-pollinated progenies (1-1, 1-2, 1-3), 25 F-1 and 44 F-2 hybrid generations were analyzed by GC. Camphor and borneol proved to be present in each sample, while 1,8-cineole was missing only in 0.17% of them. Based on the results, a quantitative description of the main chemotypes (camphoraceous, cineolic and mixed) was given. In the established progenies, the proportion of the chemotypes varied according to the mother plants and breeding method. The segregation reveals that each of the mother plants possessed a heterozygotic structure for genes regulating the level of the main compounds. Further, the same chemotype detectable as a phenotype might exist on the basis of a different genotypical background. The correlation system of the three monoterpenes was in harmony with these findings and the accepted biochemical models of their synthesis. It was concluded that a homogenous chemical constitution in the populations might be obtained only after several years inbreeding, and the examined compositional traits should be treated in breeding like quantitative features of polygenic determination.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712041

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

Volatile compounds fromCupressus macrocarpaHartw.,C. arizonicaGreene andC. torulosaDon. leaves collected in the Argentinian Patagonia were isolated by steam distillation yielding 0.78%, 1.01% and 0.61% of essential oils, respectively. Leaf oils were analyzed by GC and GC/MS. The main constituents of each oil were: (i)C. macrocarpaoil: α-pinene (20.2%), sabinene (12.0%), p-cymene (7.0%) and terpinen-4-ol (29.6%); (ii)C. arizonicaoil: α-pinene (22.9%), limonene (8.5%), umbellulone (16.5%), terpinen-4-ol (5.5%) and cis-muurola-4(14), 5-diene (90%); and (iii)C. torulosaoil: α-thujene (4.2%), α-pinene (25.8%), sabinene (22.3%), myrcene (4.7%) and terpinen-4-ol (9.3%).

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712042

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The leaf oil ofArtemisia scopariaWaldst et Kit. (Asteraceae) was analyzed by capillary GC and GC/MS. Monoterpenes and phenyl propanoids amounted to 81.7%. The more important costituents were found to be γ-terpinene (21.8%), eugenol (20.4%), eugenyl valerate (5.5%), limonene (5.0%), p-cymene (4.6%), eugenyl isovalerate (4.2%) and eugenyl butyrate (2.9%).

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712043

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The essential oil of the aerial parts ofErica manipulifloraSalisb. from two Greek regions were investigated by GC/MS. Thirty four and fifty one components were identified in the two oils representing 88.3% and 92.0% respectively.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712044

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The essential oil ofHaplophyllum tuberculatum(Forssk.) A. Juss. was analyzed by GC and GC/MS. The main constituents were limonene (27.3%) and α-pinene (21.9%).

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712045

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

Volatile compounds of the fruits genipap (Genipa americanaL.) and bacuri(Platonia insignisMart.) were investigated by GC/MS. GC-olfactometry by AEDA pointed the main aroma impact compounds in both fruit extracts, mainly linalool and methyl hexanoate in bacuri. In genipap, high amounts of carboxylic acids were detected after a KOH impregnated silica gel open column chromatography, used to separate the carboxylic acids from the neutral compounds presented. GCO/AEDA pointed to butyric, 2-methylbutyric and hexanoic acids as the impact aroma compounds responsible for the acidic and pungent notes observed in genipap. Beside these, the ethyl esters of 2- and 3-methylbutyric acids were also pointed as the most intense and characteristic fruity notes in that fruit.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712046

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor