Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Wilfried Bretschneider"'
Autor:
Stefan Brennecke, Peter Werkhoff, Wilfried Bretschneider, Rudolf Dr Hopp, Horst Surburg, Matthias Güntert
Publikováno v:
Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung. 196:307-328
Knowledge of the difference in character and intensity of organoleptically important enantiomeric flavor and fragrance components has initiated the development of new analytical and preparative methods for the separation of optical isomers. In recent
Publikováno v:
Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung. 192:111-115
The direct capillary gas Chromatographic separation oftrans-α-ionone andtrans-α-damascone enantiomers is reported using heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin in polysiloxane as a suitable chiral stationary phase. The method described has bee
Autor:
Rudolf Dr Hopp, Volker Schurig, Martin Jung, Peter Werkhoff, Wilfried Bretschneider, Johann Jauch, Dieter Schmalzing
Publikováno v:
Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung. 191:28-31
By inclusion gas chromatography on (2,6-di-O-methyl-3-O-perfluoroacyl)-β-cyclodextrins (perfluoroacyl=trifluoroacetyl or heptafluorobutanoyl), the aroma compound of hazelnuts,E-5-methyl-hept-2-en-4-one, filbertone, was quantitatively separated into
Publikováno v:
Flavor, Fragrance, and Odor Analysis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fe30a2f35b095de17f7c98701568893
https://doi.org/10.1201/9780203908273.ch6
https://doi.org/10.1201/9780203908273.ch6
Autor:
Peter Werkhoff, Wilfried Bretschneider
Publikováno v:
Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung. 182:298-302
Es wird eine Analysenmethode zur quantitativen Bestimmung von Diethylenglykol (DEG) in Weinen, Traubensaften and Traubensaftkonzentraten vorgestellt. Die Methode beinhaltet die Extraktion von Diethylenglykol mit Ethylacetat in einem Rotationsperforat
Autor:
Peter Werkhoff, Wilfried Bretschneider
Publikováno v:
Journal of Chromatography A. 405:99-106
The possibilities of dynamic headspace sampling for different applications in flavour and fragrance chemistry are demonstrated. A system for analysis of volatile components by means of the purge and trap technique with cryofocusing as an appropriate