• Publications
  • Influence
Patterns of quinolizidine alkaloids in 56 species of the genus Lupinus
The alkaloid composition of 56 species of the genus Lupinus was studied by capillary gas-liquid chromatography and GLC-mass spectrometry and their relative abundances in leaves and seeds are recorded. Expand
Capillary gas chromatography-mass spectrometry of Amaryllidaceae alkaloids
Abstract An alkaloid extract of Narcissus/pseudonarcissus was examined by means of gas chromatography-mass spectrometry (GC-EIMS and GC-CIMS). GC-MS of underivatized Amaryllidaceae alkaloids wasExpand
Comparative analysis of pyrrolizidine alkaloids from natural sources by gas chromatography-mass spectrometry
Abstract Underivatized pyrrolizidine alkaloids (PAs) from natural sources (plants and insects) were analysed by capillary gas chromatography-mass spectrometry. GC-MS data (retention indices and [M]+)Expand
Investigation of the Alkaloid Pattern of Datura innoxia Plants by Capillary Gas-Liquid-Chromatography-Mass Spectrometry.
The alkaloid composition of DATURA INNOXIA plants was analysed by quartz capillary GLC and GLC-MS and two hitherto unknown hygrine derivatives, presumably isomeric N-methylpyrrolidinyl-hygrines, were characterized. Expand
Chemotypes of two pyrrolizidine alkaloid-containing Senecio species
Evaluation of the pyrrolizidine alkaloids of Senecio jacobaea and S. erucifolius from different geographic locations revealed the existence of different chemotypes, which were established within each species. Expand
Chemical and Physical Characterization of Four Interfacial-Active Rhamnolipids from Pseudomonas spec. DSM 2874 Grown on n-Alkanes
Four extracellular glycolipids produced under growth-limiting conditions were isolated from the culture broth of Pseudomonas spec. DSM 2874. After purification by column and thick-layerExpand
Levels and tissue distribution of loline alkaloids in endophyte-infected Festuca pratensis
Festuca pratensis infected with the endophyte Acremonium uncinatum produces loline alkaloids that are not found in the uninfected grass or the fungus alone, and within a seed the embryo was found to contain a two-fold higher alkaloid concentration than the remaining seed tissue. Expand
Qualitative and Quantitative Analysis of the Phenolic Constituents from Orthosiphon aristatus.
The caffeic acid derivatives including the major compounds rosmarinic acid and 2,3-dicaffeoyltartaric acid predominated over the flavones in an aqueous MeOH extract that was comparable to a herbal tea. Expand