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1992 (1)
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1Author    Robert Verpoorte, M. Thea, Rommert Ulder-Krieger, JacquesM. Wijnsma, AndersBaerheim Verzijl, SvendsenRequires cookie*
 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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 TEI-XML for    default:Reihe_C/39/ZNC-1984-39c-0680_n.pdf 
 Identifier    ZNC-1984-39c-0680_n 
 Volume    39 
2Author    E. Rá, F. T., J.M NRequires 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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 TEI-XML for    default:Reihe_C/40/ZNC-1985-40c-0914_n.pdf 
 Identifier    ZNC-1985-40c-0914_n 
 Volume    40 
3Author    Rudolf Brenneisen, Stefan BornerRequires 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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 TEI-XML for    default:Reihe_C/43/ZNC-1988-43c-0511.pdf 
 Identifier    ZNC-1988-43c-0511 
 Volume    43 
4Author    B. Posner, G. B. Feige, S. H. UneckRequires 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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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0001.pdf 
 Identifier    ZNC-1992-47c-0001 
 Volume    47 
5Author    Gerhard Sandmann, Peter BögerRequires 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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 TEI-XML for    default:Reihe_C/43/ZNC-1988-43c-0699.pdf 
 Identifier    ZNC-1988-43c-0699 
 Volume    43