摘要:

Two undescribed species of the genusAustromyrtuspossess leaf essential oils rich in (E)-β-ocimene. This compound accounts for approximately 83% of the oil in one species, the remainder of the oil being composed of mono- and sesquiterpenes in small amounts. The second species has more variation in its oil with (E)-β-ocimene accounting for 51–80% of the oil and myrcene accounting for 0.2–35.0%. The oil yield, in both species, was 0.2–0.9% based on fresh leaves.

ISSN:1041-2905    

DOI:10.1080/10412905.1995.9698454

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

The absolute ofCestrum nocturnumL. (Jessamine, “Night Queen,” Solanaceae) was analyzed by GC and GC/MS. More than 130 compounds could be detected of which more than 100 were identified. The olfactorially valuable compounds that were found with a concentration higher than 1% were: linalool (3.1%), benzaldehyde (2.5%), benzyl alcohol (2.4%), phenylacetaldehyde (2.4%), cis-jasmone (2.1%), benzyl acetate (1.8%), phenol (1.6%), methyl jasmonate (1.5%), 1,8-cineole (1.4%), borneol (1.3%), eugenol (1.3%), linalyl acetate (1.2%) and citronellyl propionate (1.1%). In addition, more than 70 other interesting volatiles as well as more than 10 higher hydrocarbons (higher than C16) and more than 10 fatty acids and their esters were also identified in the absolute.

ISSN:1041-2905    

DOI:10.1080/10412905.1995.9698455

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

The genetic variability of the major essential oil constituents in a germplasm collection of dill (Anethum graveolensL.) from the National Plant Germplasm System was characterized. The oil content in the dill herb ranged from 0.10% to 0.30% (v/fresh weight), and in the dill seed from 1.75% to 4.0% (v/dry weight). The three major constituents in the dill herb oil were α-phellandrene, β-phellandrene, and 3,9-oxy-p-menth-1-ene (dill ether) comprising 90% to 97% of the total oil constituents. Of these three constituents, α-phellandrene comprised 51.1% to 64.7% of the total oil. The major constituents in dill seed oil were carvone and dihydrocarvone comprising 68% to 83% of the total oil constituents. The other major constituent was limonene, which ranged from 14.18% to 21.43%. Carvone was not detected in the herb oil; and dill ether could not be detected in the seed oil.

ISSN:1041-2905    

DOI:10.1080/10412905.1995.9698456

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

Analytical investigation of a concrete ofJasminum azoricumL. by GC and GC/MS allowed us to identify about 40 constituents. The major components were (E,E)-farnesol (30.1%) and geranyl linalool (21.7%). The composition of the concrete is compared with a laboratory prepared concrete ofJasminum sambac(L.) Soland.

ISSN:1041-2905    

DOI:10.1080/10412905.1995.9698457

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

The composition of the volatile fraction of 236 samples of genuine Uruguayan lemon oils obtained by industrial processing during the 1992 and 1993 seasons was studied by GC. The samples were representative of all production areas situated in the North and South of the country. Forty-three components were identified in the oils. The quantitative data regarding all the samples were divided according to the production areas (North and South), production year and month. These data show that except for a slight decrease of limonene and an increase of some other monoterpenes such as sabinene and β-pinene, the oil compositions do not show much variation during the production season, while the oils obtained from fruits growing in the South have a higher content of oxygenated compounds than those growing in the North. This difference is in good agreement with the better olfactive properties of the South oils. The quantitative composition of the Italian oils is more similar to Uruguayan South oils than to the North ones.

ISSN:1041-2905    

DOI:10.1080/10412905.1995.9698458

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

The essential oil was obtained (0.66%) from the aerial plant parts of wildHyssopus officinalisL., which was collected around Petnjica (Montenegro). It was examined by a combination of GC and GC/MS. Fifty-seven constituents were found, of which the major ones were methyl eugenol (38.3%), limonene (37.4%) and β-pinene (9.6%).

ISSN:1041-2905    

DOI:10.1080/10412905.1995.9698459

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

Chemical composition of the essential oils of 85 individuals ofArtemisia annuaL. was determined by GC. The plant material was cultivated in Budaörs (near Budapest). The essential oil content varied between 0.48–0.81%. The main components of the oil obtained from fresh flowering shoots were artemisia ketone (33–75%) and artemisia alcohol (15–56%). Five other components of the oils were identified by GC/MS. Four different types ofA. annuaoils were identified: (a) 41% of the individuals contained artemisia ketone (75%) and artemisia alcohol (15%); (b) a decreasing ratio of artemisia ketone and an increasing ratio of artemisia alcohol (38% of the individuals); (c) artemisia ketone (50%) and artemisia alcohol (45%) (14% of individuals); and (d) artemisia ketone (33%) and artemisia alcohol (56%) (7% of individuals).

ISSN:1041-2905    

DOI:10.1080/10412905.1995.9698460

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

The composition of the leaf oils ofJuniperus rigidafrom northeast China, Japan and Korea are reported. The Japanese samples were very similar to previous literature reports being rich in bornyl acetate (40.5–59.0%) and α-pinene (13.5–15.4%), but the samples from northeast China and Korea showed geographical differentiation in the production of increased amounts of α-pinene (39.7% and 53.5% respectively) and reduced amounts of bornyl acetate (1.3% and 2.8% respectively).

ISSN:1041-2905    

DOI:10.1080/10412905.1995.9698461

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

The essential oils obtained by steam distillation of the root bark and wood ofCinnamomum parthenoxylon(Jack) Nees growing wild in Vietnam were investigated by a combination of GC and GC/MS. More than 30 compounds in the root bark oil, and about 20 components in the wood oil have been identified. The main constituent of the root bark oil was benzyl benzoate (52.0%), whereas the wood oil consisted mainly of safrole (90.3%). The oil yield and the safrole content of the wood oil from different geographic regions in Vietnam showed little variation.

ISSN:1041-2905    

DOI:10.1080/10412905.1995.9698462

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor

摘要:

Trials conducted on Japanese mint (Mentha arvensisL. var.piperascensMalinv.) during winter under glasshouse conditions indicated that biomass, essential oil, total chlorophyll, menthol content and Mn uptake followed a quadratic trend with graded levels of Mn application in nutrient solution. Oil concentration and menthol contents were positively associated with both fresh herbage yield and total chlorophyll contents, the latter two characters being positively correlated significantly. On graphical analysis using the Cate and Nelson graphical model the critical Mn concentration was found to be 0.125 μg/mL on a dry weight basis in nutrient solution, while using regression analysis, it was determined to be 0.118 μg/mL.

ISSN:1041-2905    

DOI:10.1080/10412905.1995.9698463

出版商:Taylor & Francis Group    

年代:1995

数据来源: Taylor