Referent:Prof. Dr. Nikolai Kuhnert, Professor of Chemistry, School of Engineering& Science, Jacobs University Bremen
Titel: Characterisation of chlorogenic acids from dietary materials by mass spectrometry
Abstract: Chlorogenic acids are among the most widespread secondary plant metabolites produced by almost all plants. In a typical human diet the daily human intake is estimated at 2-g per human per day. Chlorogenic acids are characterised by an astonishing degree of isomerism with some plants such as coffee producing close to 100 different derivatives. During food processing such as coffee roasting or brewing the number of compounds present in the beverage increases to over 200. In recent years we have developed methods based on tandem mass spectrometry that are able to distinguish and unambigiously assign chlorogenic acid regio- and stereochemistry. Using these tools we will describe the chlorogenic acid profiles in selected plants (coffee AND stevia rebaudiana) and describe their chemistry during food processing in detail. Next to structural aspects we will as well report on biological activities of food processing products derived from chlorogenic acids.
Raum: 2.145
Uhrzeit: 16:30