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1. Essential Oil of Betula pendula Roth. Buds

Author

K. Hüsnü Can Başer, Betül Demirci, Fatih Demirci, Gerhard Franz, D. H. Paper, Anadolu Üniversitesi, Eczacılık Fakültesi, Farmakognozi Anabilim Dalı, Demirci, Betül, Demirci, Fatih, and Başer, K. Hüsnü Can

Subjects
GC, Chromatography, birch, Chemistry, microdistillation, hydrodistillation, lcsh:Other systems of medicine, Mass spectrometry, lcsh:RZ201-999, essential oil, law.invention, Complementary and alternative medicine, Betula pendula, law, Betulaceae, Original Article, Gas chromatography, Gas chromatography–mass spectrometry, GC-MS, Essential oil, Germacrene D
Abstract

WOS: 000207179200012, PubMed ID: 15841263, 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 chromatography-mass spectrometry (GC-MS). Overall, more than 50 compounds were identified representing 80% and 92% for hydrodistillation and microdistillation, respectively. The main components ( by hydrodistillation and microdistillation, respectively) found were alpha-copaene (12% and 10%), germacrene D (11% and 18%) and delta-cadinene (11% and 15%) in the analyzed essential oils. The microdistillation technique proved to be a useful tool and compliant alternative when compared to hydrodistillation.

Published
2004

2. Effects of Salvia Essential Oils on the Chorioallantoic Membrane (CAM) Assay.

Author

Demirci, Betül, Demirci, Fatih, Dönmez, Ali A., Franz, Gerhard, Paper, Dietrich H., and Hüsnü Can Başer, K.

Subjects
SALVIA, MICROBIOLOGICAL assay, ESSENTIAL oils, GAS chromatography, CHROMATOGRAPHIC analysis, NEOVASCULARIZATION
Abstract

The aerial parts of Salvia hedgeana Dönmez, Salvia huberi Hedge, Salvia pisidica Boiss. & Heldr. ex Bentham. were subjected to hydrodistillation. The obtained essential oils were analyzed both by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). The analyses showed that S. hedgeana essential oil consisted of β-pinene (30.0%) as a major component, in addition to 65 identified components, representing 89.9% of the total essential oil. The major component of S. huberi was identified as 1,8-cineole (20.4%), and 76 further components were characterized representing 87.6%. S. pisidica essential oil revealed the occurrence of camphor (21.7%) as the main constituent among another 59 identified components of 76.8% of the total. Furthermore, the biological properties of the analyzed essential oils were tested using the in vivo method on the chorioallantoic membrane (CAM) in order to examine the anti-inflammatory and anti-angiogenic activity as well as possible irritant or toxic side effects. All essential oils tested at a concentration of 100 µg/pellet showed no pronounced anti-inflammatory, angiogenic, or membrane-toxic properties. [ABSTRACT FROM AUTHOR]

Published
2005
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3. The standardization of gas—liquid chromatography for the analysis of simple hydrocarbon mixtures

Author

summarized in this paper

Subjects
Chromatography, Sample (material), Organic Chemistry, Analytical chemistry, Retention distance, General Medicine, Biochemistry, Toluene, Analytical Chemistry, Hydrocarbon mixtures, chemistry.chemical_compound, chemistry, Calibration, Gas chromatography, Benzene
Abstract

Nine European laboratories have taken part in a joint exercise in which two samples, one containing about 98% benzene and the other 90% toluene, were analysed, using chromatographic equipment available to each laboratory. For each sample, a known quantity of a specified internal standard was used and the composition of the samples was calculated from calibration data based on (I) peak height, (2) peak height X retention distance, (3) peak height x width of peak at half peak height. The precision of the results is least for method (3), but method (I) is preferred because it is the simpliest. The results for the toluene sample were less precise than those for the benzene sample. Further work is in progress.

Published
1963