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1990 (1)
1986 (1)
1983 (1)
1Author    NikolaosK. Andrikopoulos, Athanasia Siafaka-Kapadai, Nikoletta Yanovits-Argyriadis, ConstantinosA. Demopoulos, V. IoRequires cookie*
 Title    Evidence for the Presence of Neutral Glycerylether Derivatives in Pollen Lipids of Pine Tree Pinus halepensis  
 Abstract    The separation and identification of glyceryl ether (G E) derivatives from pollen neutral lipids of Pine tree Pinus halepensis (Miller) is described. The separation and purification of G E derivatives from the other lipid classes, especially from monoglycerides and diglycerides, was done by thin layer chromatography. The purified G E derivatives were examined by infrared spectrometry analyzed by gas liquid chromatography, and the glycerylether backbones were identified by gas chromatography-mass spectrometry of its isopropylidene derivatives. Fatty acids were detected as esterified constituents after mild alkaline hydrolysis of the G E fraction. The G E derivatives are characterized as l-0-(di)hydroxyalke(die)nyl-glycerols, the side hydroxyl group(s) of the O-carbonchain being esterified mainly with saturated fatty acids. 
  Reference    Z. Naturforsch. 41c, 396 (1986); received October 17 1985 
  Published    1986 
  Keywords    Glycerylethers, Pollen Lipids, Pinus halepensis, Gas Chromatography-Mass Spectrometry 
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 TEI-XML for    default:Reihe_C/41/ZNC-1986-41c-0396.pdf 
 Identifier    ZNC-1986-41c-0396 
 Volume    41 
2Author    Roland Greinwald, Gabriele Lurz, Ludger Witte, Franz-Christian CzyganRequires cookie*
 Title    A Survey of Alkaloids in Spartium junceum L. (Genisteae-Fabaceae)  
 Abstract    The alkaloid pattern of Spartium junceum has been investigated. Cytisine, N-methylcytisine, anagyrine, rhombifoline and epi-baptifoline occur as major compounds in most of the samples studied. Considerable quantitative differences were found between various parts of the plant. The alkaloid content changed strongly dependent on the seasons. Only a limited variation can be ascribed to geographical origin. 
  Reference    Z. Naturforsch. 45c, 1085—1089 (1990); received February 15/September 26 1990 
  Published    1990 
  Keywords    Spartium junceum, Fabaceae, Genisteae, Quinolizidine Alkaloids, Gas Chromatography/Mass Spectrometry, Chemotaxonomy 
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 TEI-XML for    default:Reihe_C/45/ZNC-1990-45c-1085.pdf 
 Identifier    ZNC-1990-45c-1085 
 Volume    45 
3Author    WolfgangG. RoßeRequires cookie*
 Title    Incorporation of ,5N-Ammonia into Serotonin in Cotyledons of Maturing Walnuts  
 Abstract    Cotyledons isolated from maturing seeds of Juglans regia incorporate supplied [l5N]-ammonia into serotonin (5-HT). A '5N incorporation of about 9% into the indolic nitrogen of 5-HT is detectable by gas chrom atography-mass spectrometry following isolation of 5-HT by p re­ parative HPLC. This l5N incorporation supports the hypothesis that biosynthesis and accum ulation of 5-HT play a role in ammonia detoxification in m aturing walnut seeds. 
  Reference    Z. Naturforsch. 38c, 1057—1058 (1983); received September 22 1983 
  Published    1983 
  Keywords    Serotonin Biosynthesis, Ammonia Detoxification, l5N Incorporation, Gas Chromatography-Mass-Spectrometry, Juglans regia 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-1057_n.pdf 
 Identifier    ZNC-1983-38c-1057_n 
 Volume    38