| | 1 | Author
| Robert Verpoorte, M. Thea, Rommert Ulder-Krieger, JacquesM. Wijnsma, AndersBaerheim Verzijl, Svendsen | Requires cookie* | | | Title
|  | | | | Abstract
| The quantitative analysis o f the alkaloids in Cinchona tissue cultures by means o f a reversed-phase ion pair HPLC method is reported. | | | |
Reference
| Z. Naturforsch. 39c, 680—6 (1984); received November 29 1983 | | | |
Published
| 1984 | | | |
Keywords
| Cinchona, Tissue Culture, Alkaloids, Quantitative Analysis, HPLC | | | |
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| default:Reihe_C/39/ZNC-1984-39c-0680_n.pdf | | | | Identifier
| ZNC-1984-39c-0680_n | | | | Volume
| 39 | |
| 2 | Author
| E. Rá, F. T., J.M N | Requires cookie* | | | Title
| from Sideritis leucantha (Lam iaceae) | | | | Abstract
| A quantitative and qualitative study of the seasonal var iation of free flavone aglycones from Sideritis leucantha (Lamiaceae) has been carried out by means of HPLC. The flavonoid pattern remained unvariable with seasonal varia tion supporting flavonoid aglycones as idoneous taxonomic markers. Quantitative variations were observed, being the summer months which yielded a higher content in these compounds. These highly methylated flavone aglycones are located in the leaves surface as part of the excretion mate rial. | | | |
Reference
| Z. Naturforsch. 40c, 914 (1985); received September 10 1985 | | | |
Published
| 1985 | | | |
Keywords
| Sideritis leucantha, Lamiaceae, Exudate Flavonoids, Monthly Variation, HPLC | | | |
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| default:Reihe_C/40/ZNC-1985-40c-0914_n.pdf | | | | Identifier
| ZNC-1985-40c-0914_n | | | | Volume
| 40 | |
| 3 | Author
| Rudolf Brenneisen, Stefan Borner | Requires cookie* | | | Title
| The Occurrence of Tryptamine Derivatives in Psilocybe semilanceata | | | | Abstract
| The content of tryptamine derivatives in Psilocybe semilanceata, a popular hallucinogenic mushroom, was measured by high-performance liquid chromatography. Most of the 52 samples have been collected at several localities in Switzerland during a 1—5 year period. The content of psilocybin and baeocystin varied in the range of 0.21—2.02% and 0.05—0.77%, respectively, whereas only traces of psilocin were present. The variability of the alkaloid level depending on origin, year of collection, size and part of mushrooms is discussed. | | | |
Reference
| Z. Naturforsch. 43c, 511—514 (1988); received April 14/May 18 1988 | | | |
Published
| 1988 | | | |
Keywords
| Psilocybe semilanceata, Hallucinogenic Mushrooms, Psilocybin, Baeocystin, HPLC | | | |
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| default:Reihe_C/43/ZNC-1988-43c-0511.pdf | | | | Identifier
| ZNC-1988-43c-0511 | | | | Volume
| 43 | |
| 4 | Author
| B. Posner, G. B. Feige, S. H. Uneck | Requires cookie* | | | Title
| Studies on the Chemistry of the Lichen Genus Umbilicaria Hoffm | | | | Abstract
| The aromatic com pounds o f more than 400 specimens o f 33 species o f the lichen genus Umbilicaria have been investigated by HPLC. Additionally to gyrophoric, hiascic, lecanoric, ovoic and umbilicaric acids, atranorin, norstictic and stictic acids, the new depside crustinic acid has been found. Structure elucidation o f crustinic acid was made by means o f HPLC cochromatography, N M R , UV and mass spectrometry. N ow the secondary product patterns o f Umbilicaria species are discussed and their significance for systematic purposes is shown. | | | |
Reference
| Z. Naturforsch. 47c, 1 (1992); received July 22/October 24 1991 | | | |
Published
| 1992 | | | |
Keywords
| Lichens, Umbilicaria, Aromatic Lichen Substances, Crustinic Acid, HPLC | | | |
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| default:Reihe_C/47/ZNC-1992-47c-0001.pdf | | | | Identifier
| ZNC-1992-47c-0001 | | | | Volume
| 47 | |
| 5 | Author
| Gerhard Sandmann, Peter Böger | Requires cookie* | | | Title
| Accumulation of Protoporphyrin IX in the Presence of Peroxidizing Herbicides | | | | Abstract
| Peroxidizing herbicides were assayed for their capacity to accumulate tetrapyrrole-like com-pounds in the liquid culture medium when growing the xanthophycean alga Bumilleriopsis filifor-mis. We have isolated and purified this compound by HPLC. For identification optical, fluores-cence, NMR and mass spectroscopy were employed. All these techniques showed that the accu-mulation product is protoporphyrin IX. This tetrapyrrole was found, although to a different extent, using either chlorophthalim, oxadiazon, oxyfluorfen or LS 82-556. Accumulation of proto-porphyrin IX caused by peroxidizing compounds was also found in light-grown Bumilleriopsis cells and heterotrophically (dark-)grown Scenedesmus cells, but neither in light-grown Scenedes-mus cells nor in dark-grown Neurospora. | | | |
Reference
| Z. Naturforsch. 43c, 699—704 (1988); received August 10 1988 | | | |
Published
| 1988 | | | |
Keywords
| Bumilleriopsis, FAB Mass Spectrometry, HPLC, NMR Spectrometry, Chlorophthalim, Neuro-spora | | | |
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| default:Reihe_C/43/ZNC-1988-43c-0699.pdf | | | | Identifier
| ZNC-1988-43c-0699 | | | | Volume
| 43 | |
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