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379 results on '"Buchbauer G"'

23. Inhaltsanalyse des Rebstocksekretes (Rebtränen) mittels GC-FTIR-MS

Author

Jirovetz, L., Buchbauer, G., Remberg, G., and Nikiforov, A.

Abstract

Research Note Analysis of grapevine seretion 8grapevine tears) using GC-FTIR-MS The aqueous secretion of grapevine (cutting secretion) is valued in folk medicine since ancient time as a haemostatic, astringent medicine as well as a disinfectant and bactericide in the case of diseases concerning the eye or ear region (WOLLFORT 1982). But there are no reports on constituents responsible for these effects so far. Therefore it was the aim of this investigation to get more knowledge about this folk medicine., VITIS - Journal of Grapevine Research, Vol. 33 No. 2 (1994): Vitis

Published
2015
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27. Chemical composition, olfactory evaluation and antioxidant effects of essential oil from Mentha canadensis

Author

Jirovetz, L., Wlcek, K., Buchbauer, G., Stoilova, I., Atanasova, T., Stoyanova, A., Albert Krastanov, and Schmidt, E.

Subjects
Pharmacology, Hydroxyl Radical, Biphenyl Compounds, Plant Science, General Medicine, Iron Chelating Agents, Oxidants, Thiobarbituric Acid Reactive Substances, Antioxidants, Gas Chromatography-Mass Spectrometry, Linoleic Acid, Plant Leaves, Complementary and alternative medicine, Picrates, Drug Discovery, Odorants, Oils, Volatile, Quercetin, Mentha
Abstract

The chemical composition of the essential oil from cornmint ( Mentha canadensis L.) was analyzed by GC/FID and GCMS. The main constituents were menthol (41.2%) and menthone (20.4%). It was established that cornmint oil had antiradical activity with respect to the DPPH and hydroxyl (OH•) radicals. The concentrations necessary for 50% neutralization of the respective radicals (IC50) were 365.0 μg/mL for DPPH and 0.3 μg/mL for OH•, which was indicative that the antioxidant activity in terms of OH• was higher than that of quercetin. Cornmint oil chelated the Fe3+ ions present in the solution. The oil demonstrated antioxidant activity in a linoleic acid emulsion model system, where at 0.1% concentration it inhibited the formation of conjugated dienes by 57.1% and the generation of secondary oxidized products of linoleic acid by 76.1%.

Published
2009

28. The leaf essential oil of Murraya crenulata (Turcz.) Oliver from New Caledonia

Author

Hnawia, E., Cabalion, Pierre, Raunicher, I., Waikedre, Jean, Patissou, Josiane, Buchbauer, G., and Menut, C.

Subjects
New Caledonia, Murraya crenulata Turcz. Oliver, Lifou Island, leaves, essential oil
Abstract

The essential oil of Murraya crenulata (Turcz.) Oliver (Rutaceae) was obtained from fresh leaves by hydrodistillation of plant material collected in Lifou, Loyalty Islands, New Caledonia. Analysis by a combination of GC and GC-MS indicates a characteristic chemical composition dominated by p-menthane derivatives, mainly perilla aldehyde (73.2%), limonene (8.2%), perilla alcohol (6.5%) and its acetate (6.0%). Copyright

Published
2007

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