摘要:

A field experiment was conducted during 1994–95 at the Research Farm of the Central Institute of Medicinal and Aromatic Plants (CIMAP), Lucknow, India to study the yield potential ofArtemisia annuaplanted at different times on sandy loam soil in a subtropical environment. Results revealed that the crops planted between September to December produced significantly higher herbage yield measured directly, or after drying compared with that of February planted crop. September planted crop yielded the highest amount of artemisinin. Therefore, the plants established during pre-winter (August-September) weather and allowed to grow through the entire winter synthesized and accumulated more artemisinin than plants established during early (October-November) and late (February) winter periods. The crop planted in November (or the beginning of winter) was found to be significantly superior to a crop planted in August, January or February, both in herbage production and oil yield. The September planted crop yielded relatively less oil than the November planted crop but the artemisia ketone content of the oil of the former was better. It is concluded that the artemisinin content is dependent on the weather conditions, and high yields of artemisinin do not necessarily depend on high dry matter production by the crop. Under northern Indian plains conditions, theArtemisia annuacrop should be planted in September for getting higher artemisinin yield with superior quality of oil as measured by the artemisia ketone content, and in November for obtaining maximum oil yield.

ISSN:1041-2905    

DOI:10.1080/10412905.1997.9699458

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

Activity against the acute inflammatory process induced by carrageenin and histamine in rats and the anti-nociceptive effect in mice were investigated after administration ofSalvia sclareaoil and some of its constituents. The oil showed a significant anti-inflammatory effect and moderate analgesic action after subcutaneous injection at a dose of 250 mg/kg. The anti-inflammatory action was more conspicuous in the carrageenin-induced edema, where it produced the equivalent effect of a 5 mg/kg dose of indomethacin, than in the histamine-induced edema. The effect was correlated to the presence of methyl chavicol, linalool, α-terpineol and linalyl acetate. The results show that these constituents produce less anti-inflammatory action when administered separately than the oilin toto, and are also less effective than the oxygenated fractions obtained by Flash chromatography of the oil. This indicates that the action of the oil is determined by synergistic action of its constituents. The moderate peripheral analgesia (evaluated by writhing test) produced byS. sclareaoil appears to be mainly attributable to its alcoholic component.

ISSN:1041-2905    

DOI:10.1080/10412905.1997.9699459

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

Water-distilled essential oil from aerial parts ofSideritis scardicasubsp.scardica, was analyzed by GC and GC/MS. The major constituents were β-pinene (17.91%), carvacrol (14.78%) and α-pinene (7.26%).

ISSN:1041-2905    

DOI:10.1080/10412905.1997.9699460

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

The essential oils of three species ofPerseaof southeastern North America were examined by GC/MS.Persea borboniais characterized by camphor (34.77±3.69%) and 1,8-cineole (17.71±4.50%);P. humilisis characterized by camphor (46.95±2.82%) and 1,8-cineole (12.71±5.40%); whileP. palustrisis characterized by 1,8-cineole (17.05±8.71%), p-cymene (14.81±17.29%), and camphor (10.60±13.71%).

ISSN:1041-2905    

DOI:10.1080/10412905.1997.9699461

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

Investigation on the antifungal activity of naturally occurring citral containing essential oil ofLitsea cubebaPers. at various dilutions revealed the possibility of its utilization as an antifungal agent. The oil isolated from the fruits ofL. cubebawas testedin vitrofor its activity at different concentrations againstFusarium moniliforme, Fusarium solani, Alternaria alternataandAspergillus niger.The oil was found to be effective against these fungal pathogens under laboratory screening. The antifungal activities of the oil increased with an increase in the concentration. Minimum effective concentrations of the oil against fungal pathogen was also different.

ISSN:1041-2905    

DOI:10.1080/10412905.1997.9699462

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

The essential oil ofUvaria narumWall. (Annonaceae) leaves was analyzed by GC, GC/MS, GC/FTIR and GC-sniffing techniques. The sample was found to be rich in β-caryophyllene (9.99%), benzoic acid (9.75%), benzyl benzoate (6.23%), α-bulnesene (5.74%), β-elemene (5.6l%), α-copaene (5.39%), 3-hexenoic acid (4.46%) and germacrene-D (4.26%). In addition, further more sixty compounds, mainly sesquiterpenes (ca. 60% incl. main compounds), aromatic components (ca. 20% incl. main compounds), hexane derivatives (ca. 10% incl. main compounds) and monoterpenes (ca. 8% incl. main compounds), were also identified to be of olfactoric importance for the characteristic dry-fruity, damascone-like and osmanthus-like odor of this natural product.

ISSN:1041-2905    

DOI:10.1080/10412905.1997.9699463

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

The water-distilled essential oil of sage (Salvia officinalisL.) grow in Cuba was analyzed by GC/MS. Among the 29 compounds identified, manool (14.74%), viridiflorol (13.46%), α-thujone (12.95%), β-thujone (10.89%) and camphor (10.36%) were the major constituents.

ISSN:1041-2905    

DOI:10.1080/10412905.1997.9699464

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

The essential oils ofIchthyothere terminalis(leaves and stems) and I.cunabi(leaves) produced from wild plants growing at different locations of Amazon have been examined by GC and GC/MS. The chief constituent found in the leaf oil of sample of,I terminaliscollected at Marapanim (PA) was sabinene (18.0%). The leaf oil ofI. terminaliscollected at Manaus (AM) was dominated by α-pinene (19–8%), sabinene (14.8%) and limonene (35.8%), while the main components identified in the stem oil were α-pinene (13.9%) and limonene (20.0%). The chief components of leaf oil ofI. cunabicollected at Vigia (PA) were α-pinene (8.5%) and β-pinene (5.2%).

ISSN:1041-2905    

DOI:10.1080/10412905.1997.9699465

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

The essential oil ofIllicium griffithiiHook. f. et Thorns., obtained by hydrodistillation of mature fruit was analyzed by GC/MS. Twenty-six components were identified constituting 91.1% of the oil, the major components being linalool (19.6%), p-methoxy phenyl acetone (11.8%), terpinen-4-ol (11.0%), limonene (10.6%) and safrole (10.1%).

ISSN:1041-2905    

DOI:10.1080/10412905.1997.9699466

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor

摘要:

The water-distilled oils from two chemotypes ofThymus leucostomusvar.leucostomus, an endemic plant of Turkey were analyzed by GC/MS. One chemotype contained carvacrol (21.59%), p-cymene (17.80%) and thymol (14.10%); and the other chemotype contained α-terpinyl acetate (23.80%), borneol (12.85%), linalool (13.67%) and thymol (11.31%) as major constituents.

ISSN:1041-2905    

DOI:10.1080/10412905.1997.9699467

出版商:Taylor & Francis Group    

年代:1997

数据来源: Taylor