摘要:

The occurrence of oxygen heterocyclic compounds in the peel oils from differentCitrusspecies has been investigated by high performance liquid chromatography. The use of a photodiode array detector has facilitated the identification and quantification of the individual coumarins, psoralens and polymethoxyflavones present. Certain oxygen heterocyclic compounds are unique to a particular species, but the majority occur widely in the peel oils. Nevertheless, the patterns of occurrence are sufficiently diverse to permit the detection of peel oil from one species in that from another.

ISSN:1041-2905    

DOI:10.1080/10412905.1989.9697775

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

To compare the regional variations of the quantitative chemical composition, some Mediterranean citrus oils (lemon, sweet orange, bitter orange, and mandarin) from Italy and Spain have been studied. Over 100 constituents were identified in the various oils, from which 80 components could be quantified.

ISSN:1041-2905    

DOI:10.1080/10412905.1989.9697776

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The cultivation possibilities of essential oil bearing plants under the Nordic climate conditions were studied at a new experimental station in Puumala, South-Finland. About 20 different plants have shown encouraging results with respect to marketable dry herb crops.

ISSN:1041-2905    

DOI:10.1080/10412905.1989.9697777

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

Coarsely ground cinnamon(Cinnamomum zeylanicum)was extracted using supercritical CO2in commercially available equipment. The extracts were made at 50°C with pressures varying from 300–600 bar. The extracts were compared chemically with a methylene chloride oleoresin and a water-distilled oil. It was found that the chemical composition between all of the materials was very similar. The cinnamaldehyde and eugenol contents varied from 75.72% to 83.19% and 1.57% to 2.40%, respectively. From this study, it can be concluded that for supercritical CO2extraction of cinnamon at 500C, pressures greater than 300 bar are not necessary.

ISSN:1041-2905    

DOI:10.1080/10412905.1989.9697778

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The cutaneous reactions of commercially available absolutes, concretes and extracts used as raw materials in the fragrance industry were examined in detail. Using epicutaneous and photo patch tests on undiluted products, the concentration at which the irritant activity and phototoxicity was no longer observed was determined for 42 different raw materials. Further-more, the allergic reaction to the test substances by subjects previously sensitized by Peru balsam oil and/or perfumes and other fragrance materials also was determined. It was found that extracts that should be used at restricted concentrations because of their phototoxic or irritant activity were the absolutes of Aleppo pine needle, juniper, Kuberose laurel leaf, nutmeg, tarragon (estragon), rae, clove bud, jasmin, sage, lavender, lavandin, thyme, immortelle and wild chamomile.

ISSN:1041-2905    

DOI:10.1080/10412905.1989.9697779

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The leaf oil of A.villosumproduced in Yunnan was examined by a combination of GC/MS and GC/FTIR. The major compounds of the oil were: α-pinene (31.29%) and β-pinene (58.52%).

ISSN:1041-2905    

DOI:10.1080/10412905.1989.9697780

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

摘要:

The essential oil obtained fromLaurus nobilisleaves, which were collected throughout the year, were studied using gas chromatography. During the period of highest essential oil yield (end of August), lower percentages of hydrocarbons and higher percentages of oxygenated compounds were found.

ISSN:1041-2905    

DOI:10.1080/10412905.1989.9697781

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

ISSN:1041-2905    

DOI:10.1080/10412905.1989.9697782

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor

ISSN:1041-2905    

DOI:10.1080/10412905.1989.9697774

出版商:Taylor & Francis Group    

年代:1989

数据来源: Taylor