摘要:

An investigation of 14 samples of Tansy(Tanacetum vulgareL.), naturally occurring in the North-Eastern part of the Netherlands, revealed the presence of an artemisia ketone, a chrysanthenol/chrysanthenyl acetate, a lyratol/lyratyl acetate and a β-thujone chemotype. The essential oils of the flower heads contained a higher percentage of the main constituent than the oil obtained from the leaves. Vulgarone A and B were detected in five samples; however, vulgarone A was only found in the leaf oils. Cis-longipinane-2, 7-dione, a component of Bulgarian Tansy, could be detected only in two samples.

ISSN:1041-2905    

DOI:10.1080/10412905.1990.9697853

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

The essential oil from the leaves ofCanella winterana(L.) Gaertn from the Dominican Republic was analyzed and found to contain a large amount of myrcene (66.41%), with lesser amounts of caryophyllene (7.12), cis-ocimene (4.92), trans-ocimene (4.11), and 1, 8-cineole (3.76). Yield (fresh wt. basis) was 0.42%. No eugenol was found in the leaf oil in contrast to its occurrence in the trunk bark.

ISSN:1041-2905    

DOI:10.1080/10412905.1990.9697854

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

Polygonum minus(kesom) was steam distilled to produce an oil in 0.3% yield. The chemical composition of the oil was examined in detail using a combination of GC/MS. Results obtained from the chemical analysis in combination with some preliminary plant propagation studies indicate that it is possible to obtain kesom oil which possesses a total aldehyde content > 87%. This can be achieved only when the plants are grown under controlled conditions. In total 28 compounds were identified in the oil.

ISSN:1041-2905    

DOI:10.1080/10412905.1990.9697855

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

Baccharis genistelloidesPers. is an Asteracea widely diffused in Brazil where it is called Carqueja. Thirty five new components were separated from the essential oil by using both HRGC and GC/EI-MS. Carquejyl acetate ((1S, 6R)-6-isopropenyl-5-methylene-2-cyclohexen-l-yl acetate) was the main constituent representing the 42.8% of the total oil composition. β-Pinene (8.2%), palustrol (5.7%), germacrene D (4.3%) and some other sesquiterpene hydrocarbons and oxygenated sesquiterpenes were also identified. Carquejol was also present and represented about 2% of the total oil.

ISSN:1041-2905    

DOI:10.1080/10412905.1990.9697856

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

The chemical composition of the essential oils of Swangi(Citrus hystrixDC) were investigated by gas chromatography and gas chromatography-mass spectrometry. (−)-Citronellal was characterized as the main component (81%) of the leaf oil. It was also found as the main component of the twig oil (78.64%), and a major component of the peel oil (23.64%) in combination with β-pinene (25.93%) and sabinene (20.36%). In total 57 constituents were characterized in the leaf oil. 2, 6-Dimethyl-5-heptenal, citronellic acid, and safrole were some of the more unusual components found in the various oils ofC. hystrix.An extract of the juice, which was found to contain β-pinene (39.50%) and terpinen-4-ol (17.55%), was not very similar in composition to an extract of the peel. This latter extract, which contained β-pinene (31.54%), sabinene (15.57%) and citronellal (16.80%), was qualitatively relatively similar in composition to the peel oil.

ISSN:1041-2905    

DOI:10.1080/10412905.1990.9697857

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

Hay blossom extracts were analyzed by preparative TLC, GC, GC/MS, GC/FTIR and other modern analytical techniques in order to determine the components responsible for their aroma. These analyses were compared with the headspace analysis of hay-blossoms used in aromatherapy as ingredients of herbal pillows. The main volatile and therefore “aroma-therapeutically” interesting compounds in the headspace identified were linalool, linalyl acetate, geraniol and coumarin. Small amounts of nerol, citronel-lol, farnesol and nerolidol were also found; however their concentration was very low. In total more than 40 compounds were identified.

ISSN:1041-2905    

DOI:10.1080/10412905.1990.9697858

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

The essential oil ofThymus‘Pinewood’ was analyzed by GC/MS. Major compounds identified were: (E)- and (Z)-sabinene hydrates (10.0% and 9.99%), β-caryophyllene (9.25%), borneol (7.94%), terpinen-4-ol (7.10%) and camphor (5.66%).

ISSN:1041-2905    

DOI:10.1080/10412905.1990.9697859

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

The volatile flavor compounds ofTamarindus indicaL. were isolated by simultaneous steam distillation/solvent extraction and analyzed by GC/MS. A total of 28 compounds were identified with furfural, 5-methyl-2(3H)-furanone, phenylacetaldehyde and 5-methylfurfural as the major volatile components which accounted for 88.74% of the total amount of volatiles.

ISSN:1041-2905    

DOI:10.1080/10412905.1990.9697860

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

The steam distilled oils from leaves of six different sweet orange cultivars were examined by GC/MS. Although twenty-eight constituents were identified in the oils, there were both qualitative and quantitative differences between them.

ISSN:1041-2905    

DOI:10.1080/10412905.1990.9697861

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor

摘要:

The leaf oils of three major commercial varieties of sweet orange growing in Israel were investigated using GC/MS. The study revealed that all three varieties belong to the same chemical type. Each of the forty-five identified constituents was found in the three essential oils examined. Major components were found to be sabinene (15.81–32.58%), linalool (5.13–20.92%), and γ-terpinene (7.41–10.50%).

ISSN:1041-2905    

DOI:10.1080/10412905.1990.9697862

出版商:Taylor & Francis Group    

年代:1990

数据来源: Taylor