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--- populus_nigra_l [2014/09/01 01:11]
andreas
+++ populus_nigra_l [2014/09/01 01:34]
andreas
@@ Zeile 6: / Zeile 6: @@
 The sweet-cented exudate of fresh P.nigra buds is collected by bees as the basis of their genuine product [[http://en.wikipedia.org/wiki/Propolis|propolis]], which is subject of medical interest.
-"Fractions in which 37 organic compounds were identified by means of GC-MS method were isolated using extraction of four propolis samples and bud exudate from Populus nigra. Six of them were identified in propolis for the first time. They are: 4-hydroxybutyric acid (4-hydroxybutanoic acid), 3-hydroxybutyric acid (3-hydroxybutanoic acid), phthalic acid, 4-hydroxyhydrocinnamic acid (phenyllactic acid), imidazole and phenetole. The main components ofpropolis fraction are acids: benzoic,cis- and trans-p-coumaric, ferulic, caffeic and cinnamic. The compounds were determined by HPLC technique (according to analysis conditions estimated with Dry-Lab software) applying calibration curve calculation for the standards of those acids. Propolis ethanolic extracts consisted of 3. 5-8. 8% of dry residue and 2.9% bud exudate extract from Populus nigra." \\
+"Fractions in which 37 organic compounds were identified by means of GC-MS method were isolated using extraction of four propolis samples and bud exudate from Populus nigra. Six of them were identified in propolis for the first time. They are: 4-hydroxybutyric acid (4-hydroxybutanoic acid), 3-hydroxybutyric acid (3-hydroxybutanoic acid), phthalic acid, 4-hydroxyhydrocinnamic acid (phenyllactic acid), imidazole and phenetole. The main components of propolis fraction are acids: benzoic,cis- and trans-p-coumaric, ferulic, caffeic and cinnamic. The compounds were determined by HPLC technique (according to analysis conditions estimated with Dry-Lab software) applying calibration curve calculation for the standards of those acids. Propolis ethanolic extracts consisted of 3. 5-8. 8% of dry residue and 2.9% bud exudate extract from Populus nigra." \\
 [GC-MS and HPLC analysis of phenolic acids extracted from propolis and from Populus nigra bud exudate.  Maciejeicz, W., Daniewski, M., Dzido, T. H., Bal, K., Chemia analityczna, Vol.47(1), 2002, 21-30]
@@ Zeile 12: / Zeile 12: @@
 [Volatile compounds from leaf-buds of //Populus nigra// L.(Salicaceae). Jerković, Igor, and Josip Mastelić., Phytochemistry Vol.63(1), 2003, 109-113]
-Phenylethyl caffeate, benzyl ferulate and benzyl-trans-4-coumarate are the most characteristic compounds found in propolis from various geographic origin. \\
+Phenylethyl caffeate, benzyl ferulate and benzyl-trans-4-coumarate are characteristic compounds found in propolis from various geographic origin. \\
-[Chemical composition and antimicrobial activity of European propolis. Hegazi, Ahmed G., F. K. Abd El Hady, F. A. Abd Allah., Zeitschrift fur Naturforschung C 55.1/2, 2000, 70-75] \\
+[Chemical composition and antimicrobial activity of European propolis. Hegazi, Ahmed G., F. K. Abd El Hady, F. A. Abd Allah., Zeitschrift fur Naturforschung C 55.1/2, 2000, 70-75]
 [[http://zfn.mpdl.mpg.de/xtf/data/Reihe_C/55/ZNC-2000-55c-0070.pdf]]
 {{http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Illustration_Populus_nigra0.jpg/640px-Illustration_Populus_nigra0.jpg}}

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