摘要:

The essential oils obtained by steam distillation of roots and leaves ofZanthoxylum rugosumSt. Hill were analyzed using GC (retention indices) and GC/MS. The major components found in the root oil were γ-muurolene (18,5%) and β-gurjunene (10.3%). The leaf oil showed as main constituents epi-α-bisabolol (37.7%) and (E)-nerolidol (25.4%).

ISSN:1041-2905    

DOI:10.1080/10412905.1999.9701063

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Steam distilled oil from aerial parts ofAcinos alpinus(L.) Moench. was analyzed by GC/MS. From the 50 separated compounds, 45 were identified. The essential oil is characterized by a high amount of sesquiterpene hydrocarbons. The main compounds were germacrene A (32.3%), epi-bicyclosesquiphellandrene (15.8%), β-elemene (12.5%) and β-caryophyllene (12.2%).

ISSN:1041-2905    

DOI:10.1080/10412905.1999.9701064

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Simultaneous distillation and solvent extraction of the sapwood of the Australian softwoodAraucaria cunninghamiiAiton ex D. Don (common name “hoop pine”) gave a minute amount of an oil (3 ppm on wood oven-dry weight), the major components of which were hexanal (11.5%), αcopaene (31.1%), and β-farnesene (11.3%). The heartwood oil (20 ppm on wood oven-dry weight) contained hexanal (9.5%), decadienal isomers (37.0%) and propionic, butyric, valeric and octanoic acids (10.3% total).

ISSN:1041-2905    

DOI:10.1080/10412905.1999.9701065

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

An oil produced fromMenthaxvillosaHuds. by steam distillation of plant material collected in Fortaleza was analyzed by GC/MS and retention indices. The oil was found to be rich in piperitenone oxide (55.4%) and γ-muurolene (13.1%).

ISSN:1041-2905    

DOI:10.1080/10412905.1999.9701066

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

The oil ofBlepharocalyx salicifolius(Humb., Bonpl. et Kunth) Berg. (Myrtaceae) was analyzed by gas chromatography employing modified cyclodextrins as chiral stationary phases. The major compounds were identified as 1,8-cineole (45.8%), (−)-β-pinene(12.3%), (+)-limonene(7.9%),(−)-limonene(3.96%), myrcene(3.06%), (−)-α-pinene (2.40%), (+)-α-pinene (1.80%) and (S)-linalool (1.33%).

ISSN:1041-2905    

DOI:10.1080/10412905.1999.9701067

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

The presence of terpinen-4-ol in the steam distillates fromMelaleuca argentea, M. dissitifloraandM. linariifoliacan be linked to high levels of (+)-sabinene and cis- and trans-sabinene hydrate in the leaf material. Incorporation of18O into the terpinen-4-ol from steam distillates performed in H218O confirms the generation of the terpinen-4-yl carbocation intermediate from (+)-sabinene and cis- and trans-sabinene hydrate. This same mechanism is also operating during leaf aging.

ISSN:1041-2905    

DOI:10.1080/10412905.1999.9701068

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

The chemical composition of two North Indian (freshly distilled and a commercial oil samples) and four South Indian cornmint oils produced from different cultivars (‘Gomti,’ ‘MAS-1,’ ‘HY-77’ and ‘Shivalik’) were compared. All the oils contained menthol as their major constituent which varied from 70.4% in commercial North Indian oil to 87.2% in cultivar ‘MAS-1’ of South Indian origin. The North Indian oils contained minor quantities of camphene, (E)-β-ocimene, isopulegol and were richer in isomenthone, isomenthol + αterpineol and menthyl acetate compared to the South Indian oils. Among all the oils, one cultivar (‘MAS-1’) oil was unique with its high menthol content (87.2%).

ISSN:1041-2905    

DOI:10.1080/10412905.1999.9701069

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

The essential oil, isolated from the flowering tops of the Tuscan endemicArtemisia coerulescensL. subsp.cretacea(Fiori) Br.-Catt. et Gubell. by hydrodistillation, was investigated by GC/MS. Fifty compounds were identified, constituting altogether 88.6% of total composition; the presence of 25 compounds inA. coerulescensssp. cretaceaoil is reported for the first time. The main components of the oil were αthujone (19–0%), β-thujone (7.7%), camphor (10.4%) and borneol (11.5%). If the oil content is compared with those of otherArtemisiaspecies,A. coerulescensssp.cretaceawas found to be extremely rich in oil.

ISSN:1041-2905    

DOI:10.1080/10412905.1999.9701070

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

The water distilled essential oil from the herbal parts ofTeucrium antitauricum, endemic in Turkey, was analyzed by GC/MS. Fifty one compounds were identified representing 97% of the oil with germacrene D (28.2%), and β-caryophyllene (27.6%) as major constituents.

ISSN:1041-2905    

DOI:10.1080/10412905.1999.9701071

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor

摘要:

Nineteen volatile components were identified by GC/MS from the dichlo-romethane extract of air-driedStachys corsica.Carvacryl acetate, linalool, α-terpenyl acetate and α-terpineol were the main volatiles.

ISSN:1041-2905    

DOI:10.1080/10412905.1999.9701072

出版商:Taylor & Francis Group    

年代:1999

数据来源: Taylor