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'Epicuticular Wax Composition' in keywords
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1993 (1)
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1Author    Paul-Gerhard Gülz, Jutta Bodden, Edith Müller, Franz-Josef MarnerRequires cookie*
 Title    Epicuticular Wax of Euphorbia aphylla Brouss. ex. Willd., Euphorbiaceae  
 Abstract    Quantity and composition of epicuticular wax of Euphorbia aphylla were examined. The wax contained the common lipid components «-alkanes, wax esters, pr. alcohols, fatty acids and in traces aldehydes and acetates all occurring in homologous series. Additionally, several triter-penols such as ß-amyrin, a-amyrin, lupeol and simiarenol were found. With the exception of simiarenol these triterpenols occurred free as well as esterified with acetic acid and fatty acids. The ketones, oleanen-3-one, ursen-3-one and lupen-3-one have also been identified. 
  Reference    Z. Naturforsch. 43c, 19—23 (1988); received September 8/October 8 1987 
  Published    1988 
  Keywords    aphylla, Epicuticular Wax Composition, Triterpenols, Triterpenones, Triterpenol Esters 
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 TEI-XML for    default:Reihe_C/43/ZNC-1988-43c-0019.pdf 
 Identifier    ZNC-1988-43c-0019 
 Volume    43 
2Author    Sabine Hennig, Paul-Gerhard Gülz, Kurt HängstRequires cookie*
 Title    Organ Specific Composition of Epicuticular Waxes of C is tus albidus L., Cistaceae  
 Abstract    Epicuticular waxes from various organs of Cistus albidus L. showed always an organ specific composition. Leaf wax contained homologous series of very long chained and saturated wax components, such as hydrocarbons, wax esters, fatty acids and alcohols. Additionally in this wax extract triterpenoids and great amounts of resin were found. Sepal wax had nearly the same wax composi-tion like that of leaves with a trend to shorter chain lengths and not so great amounts of resin. Petal wax contained the common wax lipids, too, but the homologous series showed a shift to shorter chain lengths, and great amounts of unsaturated lipids were found in hydrocarbons, wax esters and fatty acids. In addition triterpenol esters were found but no resin. Stamen wax was similar to that of petals. The shift to shorter chain lengths and the presence of great amounts of unsaturated lipids showed a characteristic distribution for stamens. Seed wax contained only saturated wax lipids. In contrast to leaf waxes, the short chain com-pounds were dominating, and triterpenoids and resin were missing. The chemical wax composition of the various organs of C. albidus was correlated to the surface structures of these organs by SEM pictures. 
  Reference    Z. Naturforsch. 43c, 806—812 (1988); received August 25 1988 
  Published    1988 
  Keywords    Cistus albidus, Epicuticular Wax Composition, Organ Specific Patterns 
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 TEI-XML for    default:Reihe_C/43/ZNC-1988-43c-0806.pdf 
 Identifier    ZNC-1988-43c-0806 
 Volume    43 
3Author    R.B N Prasad, Paul-Gerhard GülzRequires cookie*
 Title    Epicuticular Waxes from Leaves of Maple (Acer pseudoplatanus L.)  
 Abstract    The epicuticular waxes from the leaves of maples (Acer pseudoplatanus L.) contained hydro­ carbons (6.9%), wax esters (5.5%), aldehydes (38.1%), primary alcohols (10.2%) and fatty acids (17.1%). In addition to these common wax lipids, benzyl acyl esters (2.1%) and triterpe­ noids were also present. ß-Sitosterol, ß-amyrin and 24-methylene-cycloartenol were found in the form of acetates (14.4%). ß-Amyrin was also present as free alcohol (4.9%) and esterified with long chain fatty acids (~ 0.7%). 
  Reference    Z. Naturforsch. 45c, 599—601 (1990); received February 13/April 6 1990 
  Published    1990 
  Keywords    Acer pseudoplatanus L, Leaves, Epicuticular Wax Composition 
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 TEI-XML for    default:Reihe_C/45/ZNC-1990-45c-0599.pdf 
 Identifier    ZNC-1990-45c-0599 
 Volume    45 
4Author    P.-G Gülz, E. MüllerRequires cookie*
 Title    Seasonal Variation in the Composition of Epicuticular Waxes of Quevcus robur Leaves  
 Abstract    The epicuticular leaf waxes of Quercus robur were analyzed continuously over a two years vegetation period with preparation every week from April to November. The folded leaflets in buds have waxes quite different in yield and composition from those of mature leaves. They contain homologous series of hydrocarbons, wax esters, primary alco­ hols, fatty acids and triterpenoids from the beginning, but not aldehydes. After leaf unfolding a dynamic biosynthesis of alcohols, aldehydes and fatty acids is observed in May and June. Wax content is doubled per dry weight or in cm2 leaf surface area and 80-fold per one leaf in that time. During leaf development tetracosanol becomes the dominant epicuticular wax component comprising ca. 40% of the wax. In both years of the study a reactivation of wax ester biosynthesis is observed in October and November. Esters with chain length C36 and C38 increased particularly. From July to November the wax composition remained nearly constant within mean values and their stand­ ard deviations. Within the two years studied most values concerning wax composition are reproducible and are therefore genetically determined. In spring the growing processes are influenced by climatic factors. 
  Reference    Z. Naturforsch. 47c, 800—806 (1992); received June 9 1992 
  Published    1992 
  Keywords    Quercus robur, Fagaceae, Leaves, Epicuticular Wax Composition, Seasonal Variation 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0800.pdf 
 Identifier    ZNC-1992-47c-0800 
 Volume    47 
5Author    M. Uham, M. Ad, Nazir, W. Aqar, Ahm Ad, NaeemA. Khtar, Rabi, Shafiq Ahm, K. HanRequires cookie*
 Title    Epicuticular Leaf Wax of Euphorbia helioscopia L. (Euphorbiaceae)  
 Abstract    The epicuticular wax of Euphorbia helioscopia was fractionated into fatty acids, hydrocar­ bons, wax esters, aldehydes, methyl esters, triterpenol acetates, alcohols, sterols, and polar components. The com position o f the fractions was determined by GC, GC-MS, HPLC. Main com ponents within these lipid classes are hentriacontane, wax esters C ^ and C4g, octacosanal, hexacosanol and octacosanol, hexadecanoic acid, and ß-sitosterol. Lupeol and its acetate were also confirmed. 
  Reference    Z. Naturforsch. 48c, 5 (1993); received September 23 1992 
  Published    1993 
  Keywords    helioscopia, Epicuticular Wax Composition, Fatty Acids, Hydrocarbons, Wax Esters 
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 TEI-XML for    default:Reihe_C/48/ZNC-1993-48c-0005.pdf 
 Identifier    ZNC-1993-48c-0005 
 Volume    48 
6Author    P.-GG. Ülz, E. M. Üller, T. H. Errm AnRequires cookie*
 Title    Chemical Composition and Surface Structures of Epicuticular Leaf Waxes from Castanea sativa and Aesculus hippocastanum  
 Abstract    Epicuticular leaf waxes of Castanea sativa and Aesculus hippocastanum contain the same lipids in form of homologous series o f hydrocarbons, wax esters, aldehydes, primary alcohols and fatty acids in similar concentrations without any main component dominating. In Ae. hip­ pocastanum wax acetates are present, additionally. Both waxes are found to contain triter-penols and triterpenol esters in remarkable amounts. ß-Amyrin, a-amyrin and lupeol are pres­ ent in both plant waxes, in Ae. hippocastanum wax friedelanol and friedelanone, additionally. The epidermis o f both plants are covered with a thin continuous wax layer without crystal­ loids. But the adaxial leaf surface o f C. sativa shows granular wax sculptures and therefore a different micromorphological ultrastructure for both leaf sides. 
  Reference    Z. Naturforsch. 47c, 661—666 (1992); received March 12/May 20 1992 
  Published    1992 
  Keywords    Castanea sativa, Aesculus hippocastanum, Leaves, Epicuticular Wax Composition, Surface Structures, Scanning Electron Microscopy 
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 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0661.pdf 
 Identifier    ZNC-1992-47c-0661 
 Volume    47