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Toplam kayıt 28, listelenen: 1-10
Composition of the essential oils of Galium aparine L. and Gallium odoratum (L.) Scop. from Turkey
(Allured Publ Corp, 2004)
Water distilled essential oils from aerial parts of Galium aparine and Galium odoratum collected from Ankara and Kastamonu were analyzed by GC/MS. Seventy-two compounds representing 64.7% of the essential oil G. aparine, ...
The volatiles of fresh-cut Osyris alba L. flowers
(Wiley, 2004)
Osyris alba L. (Santalaceae) was subjected to headspace-solid phase microextraction (HS-SPME) and subsequent GC-MS analysis due to the strong fragrance of volatiles emitted by the freshly collected flowering branches. SPME ...
Antioxidant properties and phenolic composition of Sideritis species
(Kluwer Academic/Plenum Publishers, 2004)
The antioxidant properties and phenolic composition of 27 Sideritis species were studied. Plant samples were extracted with petroleum ether using a Soxhlet apparatus. The defatted plant materials were extracted with 70% ...
Essential oils of Sideritis species of turkey belonging to the section Empedoclia
(Springer, 2004)
The paper summarizes the work done on the essential oil content and composition of fifty Sideritis species of Turkey belonging to the section Empedoclia. The water-distilled oils were analyzed by GC/MS. The oils were ...
An improved HPLC post-column methodology for the identification of free radical scavenging phytochemicals in complex mixtures
(Springer Heidelberg, 2004)
The importance of natural antioxidants principally relates to their health-promoting properties. The discovery of new sources of established compounds or more potent compounds is a costly exercise and any technique capable ...
Essential Oil of Betula pendula Roth. Buds
(Hindawi LTD, 2004)
The essential oil of Betula pendula Roth. buds was obtained using both hydrodistillation and microdistillation techniques and their chemical compositions were analyzed using both gas chromatography ( GC) and gas ...
Screening of free radical scavenging compounds in water extracts of Mentha samples using a postcolumn derivatization method
(American Chemical Society, 2004)
An on-line high-performance liquid chromatography-1,1-diphenyl-2-picrylhydrazyl (HPLC-DPPH.,) method has been improved for the detection of polar and nonpolar radical scavenging compounds in complex plant extracts. Nine ...
Composition of the essential oil of Centaurea dichroa
(Kluwer Academic/Plenum Publishers, 2004)
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In vitro biological activity and essential oil composition of four indigenous South African Helichrysum species
(Elsevier Sci Ireland LTD, 2004)
Helichrysum species are used widely to treat various medical conditions. In this study, the anti-microbial, anti-oxidant (DPPH assay) and anti-inflammatory activity (5-lipoxygenase assay) of Helichrysum dasyanthum, Helichrysum ...
Composition of the essential oil of Cachrys alpina bieb.
(Allured Publ Corp, 2004)
A hydrodistilled essential oil from fruits of Cachrysalpina,was analyzed by GUMS. Twenty-nine compounds representing 98% of the oil were identified with alpha-humulene (33.1%), p-cymene (9.3%). alpha-phellandrene (9.1%) ...