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Stuttgart, Germany

Kahl J.,University of Kassel | Bodroza-Solarov M.,University of Novi Sad | Busscher N.,University of Kassel | Hajslova J.,Institute of Chemical Technology Prague | And 5 more authors.
Journal of the Science of Food and Agriculture | Year: 2014

Organic food quality determination needs multi-dimensional evaluation tools. The main focus is on the authentication as an analytical verification of the certification process. New fingerprinting approaches such as ultra-performance liquid chromatography-mass spectrometry, gas chromatography-mass spectrometry, direct analysis in real time-high-resolution mass spectrometry as well as crystallization with and without the presence of additives seem to be promising methods in terms of time of analysis and detecting organic system-related parameters. For further methodological development, a system approach is recommended, which also takes into account food structure aspects. Furthermore, the authentication of processed organic samples needs more consciousness, hence most of organic food is complex and processed. © 2013 Society of Chemical Industry.


Strube J.,Kwalis Quality Research GmbH | Stolz P.,Kwalis Quality Research GmbH
Biological Agriculture and Horticulture | Year: 2010

Systematic changes in wheat and carrots caused by organic or conventional farming were investigated by fluorescence excitation spectroscopy of whole samples. It was possible to identify the farming conditions of coded samples from scientific trials. The method developed and its validation for wheat and carrots is described. © 2010 A B Academic Publishers.


Stolz P.,Kwalis Quality Research GmbH | Strube J.,Kwalis Quality Research GmbH
Biological Agriculture and Horticulture | Year: 2010

Wheat and carrots produced by organic or conventional farming have been investigated by chemical analysis to estimate potential effects on their physiological amino acid status. The samples came from scientific field trials. The methods used are based on precise chemical analysis of substances of the N-metabolism of the plant. The approach for the differentiation and identification of samples of carrots and wheat and its validation are described. It is shown, that the significant differentiation and the correct identification of coded samples of different production conditions were possible. This was achieved by optimizing the precision and accuracy of measurement and by a view of the plant organism, which is oriented on the N-metabolism and its functions. © 2010 A B Academic Publishers.

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