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Dive into the research topics where Claus Oliver Schmidt is active.

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Featured researches published by Claus Oliver Schmidt.


Journal of Essential Oil Research | 2006

Extensive Study on the Minor Constituents of the Essential Oil of Eucalyptus dives Schau. Type

Berthold Weber; Beate Hartmann; Detlef Stöckigt; Birgit Kohlenberg; Claus Oliver Schmidt; Heinz-Jürgen Bertram; Bernd Hölscher

Abstract An oil of the piperitone type of Eucalyptus dives produced from trees cultivated in South Africa was analyzed by GC and GC/MS. Seventy-three constituents were characterized with piperitone ranging from 29.2% to 64.9%, depending on whether the oil was produced from dried or fresh leaves. Two novel constituents such as p-menth-5-en-2-one and p-menth-6-en-3-one were characterized as minor constituents of the oil; the former being found in nature for the first time.


Developments in food science | 2006

The flavour chemistry of culinary Allium preparations

Gerhard Krammer; Christopher Sabater; Stefan Brennecke; Margit Liebig; Kathrin Freiherr; Frank Ott; Jakob Ley; Berthold Weber; Detlef Stöckigt; Michael Roloff; Claus Oliver Schmidt; Ian Gatfield; Heinz-Jürgen Bertram

Abstract In culinary preparations cooked, roasted and fried Allium products play a major role in the taste and the aroma of the final product. In this study the correlation of various culinary preparation techniques such as cooking and frying and the resulting differences in the flavour chemistry (volatiles and non-volatiles) are demonstrated. Different preparation techniques performed on shallots, garlic and/or scallions influence the profile of volatiles and non-volatiles in culinary preparations significantly.


Journal of Agricultural and Food Chemistry | 2006

Liquid Chromatography/Mass Spectrometry and Liquid Chromatography/Nuclear Magnetic Resonance as Complementary Analytical Techniques for Unambiguous Identification of Polymethoxylated Flavones in Residues from Molecular Distillation of Orange Peel Oils (Citrus sinensis)

Berthold Weber; Beate Hartmann; Detlef Stöckigt; Klaus Schreiber; Michael Roloff; Heinz-Jürcen Bertram; Claus Oliver Schmidt


European Food Research and Technology | 2008

HPLC/MS and HPLC/NMR as hyphenated techniques for accelerated characterization of the main constituents in Chamomile (Chamomilla recutita [L.] Rauschert)

Berthold Weber; Martina Herrmann; Beate Hartmann; Holger Joppe; Claus Oliver Schmidt; Heinz-Jürgen Bertram


Perfumer and flavorist | 2005

Evaluating naturals: Application of vibrational spectroscopy methods in essential oil analysis

Claus Oliver Schmidt; Gerhard Krammer; Berthold Weber; Detlef Stöckigt; Klaus Herbrand; Frank Ott; Günter Kindel; Stefan Brennecke; Ian Gatfield; Heinz-Jürgen Bertram


Magnetic Resonance in Chemistry | 2000

Determination of the substitution pattern of di- and trisubstituted pyrazines by15N,13C and1H NMR spectroscopy

Horst Sommer; Heinz-Juergen Dr Bertram; Gerhard Krammer; Claus Oliver Schmidt; Wolfgang Stumpe; Peter Werkhoff; Michael Zviely


Molecular Nutrition & Food Research | 2006

Product‐oriented flavor research: Learnings from the past, visions for the future

Gerhard Krammer; Bernhard Weckerle; Stefan Brennecke; Berthold Weber; Günter Kindel; Jakob Ley; Jens-Michael Hilmer; Gerald Reinders; Detlef Stöckigt; Franz Josef Hammerschmidt; Frank Ott; Ian Gatfield; Claus Oliver Schmidt; Heinz-Jürgen Bertram


Journal of Agricultural and Food Chemistry | 2007

Identification of allyl esters in garlic cheese.

Klaus Herbrand; Franz Josef Hammerschmidt; Stefan Brennecke; Margit Liebig; Gerd Lösing; Claus Oliver Schmidt; Ian Gatfield; Gerhard Krammer; Heinz-Jürgen Bertram


Perfumer and flavorist | 2003

HPLC-NMR: a powerful tool for the identification of non-volatiles in lemon peel oils

Horst Sommer; H.-J. Bertram; Gerhard Krammer; Günter Kindel; T. Kühnle; G. Reinders; I. Reiss; Claus Oliver Schmidt; K. Schreiber; Wolfgang Stumpe; Peter Werkhoff


Perfumer and flavorist | 2002

Solving quality problems in several flavor aroma chemicals

Michael Zviely; Reuven Giger; Elias Abushkara; Alexander Kern; Horst Sommer; Heinz-Juergen Dr Bertram; Gerhard Krammer; Claus Oliver Schmidt; Wolfgang Stumpe; Peter Werkhoff

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