Publications by authors named "Dietmar Baumann"
Article Synopsis
- The study examined how pressure and ethanol as a co-solvent affect the extraction of anti-inflammatory faradiol esters from marigold using supercritical fluid extraction.
- The optimal extraction occurred at a pressure of 689 bar and 0.5% ethanol, yielding the highest concentration of faradiol esters, while higher ethanol concentrations at lower pressures diluted the extracts.
- Results showed that the extraction yields and concentration of faradiol esters were similar between the analytical and pilot scale extractors under consistent conditions.
Cold-pressed, non-raffinated evening primrose oil was found to contain lipophilic radical scavengers. A highly enriched fraction of these compounds could be obtained from the oil by extraction with aqueous ethanol and subsequent liquid-liquid partitioning with petroleum. LC-DAD-MS analysis revealed that the fraction contained three aromatic compounds with identical UV and ESI-MS spectra.
View Article and Find Full Text PDFIsatis tinctoria L. is an old European and Chinese dye plant and anti-inflammatory herb from which the potent cyclooxygenase-2 and 5-lipoxygenase inhibitor tryptanthrin (1) (indolo-[2,1-b]-quinazoline-6,12-dione) was recently isolated as one of the active principles. An HPLC method for the quantitative analysis of the compound in plant material was developed.
View Article and Find Full Text PDF