Karine Ndjoko

TL;DR: An outline is presented here covering the results obtained by the Institute of Pharmacognosy and Phytochemistry of the University of Lausanne during 15 years' work on African plants, covering all aspects from the selection of plant material to the isolation of pure natural products.

TL;DR: The collision-induced dissociation MS-MS spectra of ubiquitous C-glycosidic flavonoids have been systematically studied using hybrid quadrupole time-of-flight and ion-trap mass analysers under various CID energy conditions.

TL;DR: The combination of metabolite profiling and LC/bioassays provides the possibility of distinguishing between already known bioactive compounds (dereplication) and new molecules directly in crude plant extracts, so the tedious isolation of compounds of low interest can be avoided and targeted isolation of new bioactive products or constituents presenting novel or unusual spectroscopic features can be undertaken.

TL;DR: LC-NMR thus represents a potentially interesting complementary technique to LC-UV-MS in phytochemical analysis for the detailed on-line structural analysis of natural products and an analysis of the future development of the technique with respect to its application inPhytochemicalAnalysis.

TL;DR: Apple polyphenols were characterised by means of hyphenated techniques such as HPLC coupled to UV photodiode array detection ( LC-DAD) and to mass spectrometry (LC-MS) and isorhamnetin-3-O-rhamnoglucoside was identified unambiguously by comparison with a standard.