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'Antibacterial Activity' in keywords
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1Author    Milena Popova3, Vassya Bankova3, Iva Tsvetkovab, Christo Naydenskib, MarioVides SilvacRequires cookie*
 Title    The First Glycosides Isolated from Propolis: Diterpene Rhamnosides  
 Abstract    Two diterpene glycosides, e«r-S(17)-labden-15-0-a-L-rhamnoside and e«r-8(17)-labden-15-0-(3'-0-acetyl)-a-L-rham noside (new natural compounds) were isolated from propolis from El Salvador. The compounds showed significant antibacterial activity and moderate toxicity to Artemia salina nauplii. These are the first glycosides reported in bee glue. 
  Reference    Z. Naturforsch. 56c, 1108—1111 (2001); received July 19/August 23 2001 
  Published    2001 
  Keywords    Propolis, Labdane Glycosides, Antibacterial Activity 
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 TEI-XML for    default:Reihe_C/56/ZNC-2001-56c-1108.pdf 
 Identifier    ZNC-2001-56c-1108 
 Volume    56 
2Author    ZornitzaG. Kamenarska3, StefkaD. Dimitrova-Konaklievab, Christina Nikolovac, AthanasIi Kujumgievd, KamenL. Stefanov3, SimeonS. Popov3Requires cookie*
 Title    Volatile Components of the Freshwater Algae Spirogyra and Mougeotia  
 Abstract    Several species of freshwater green algae belonging to the order Zygnematales (Spirogyra crassa (K tz.) Czurda, S. longata (Vauch.) Ktz., and Mougeotia viridis (K tz.) W ittr.) were found to have a specific composition of the volatile fraction, which confirms an earlier pro­ posal for the existence of two groups in the genus Spirogyra. Antibacterial activity was found in volatiles from S. longata. 
  Reference    Z. Naturforsch. 55c, 495—4 (2000); received February 4/M arch 13 2000 
  Published    2000 
  Keywords    Antibacterial Activity, Mougeotia, Spirogyra, Volatile Compounds 
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 TEI-XML for    default:Reihe_C/55/ZNC-2000-55c-0495.pdf 
 Identifier    ZNC-2000-55c-0495 
 Volume    55 
3Author    Alexander Spassov, Evgeny Golovinsky, Nadejda Spassovska, Liliana ManevaRequires cookie*
 Title    Effect of Thio-and Hydrazino-derivatives of Uracil, 6-Azauracil and 6-Azathymine on the Growth of Some Microorganisms in Vitro  
 Abstract    The antibacterial activity of 2-thiouracil, 2-methylthiouracil, 2-hydrazinouracil, 2,4-dithiouracil, 2-thio-4-hydrazinouracil, 2-thio-6-azathymine, 2-hydrazino-6-azathymine, 2,4-dithio-6-azathymine, 2-thio-4-hydrazino-6-azathymine, 2,4-dimethylthio-6-azathymine, 2-methylthio-4-hydrazino-6-azathy-mine, 4-thio-6-azauracil and 4-hydrazino-6-azauracil has been studied on the growth of: Staphylo-coccus aureus 209, Streptococcus faecalis 775, Escherichia coli 387, Pseudomonas aeruginosa, Bacil-lus subtilis, Candida tropicalis and Neurospora crassa 9863. The highest inhibitory effect was observed with 4-hydrazino-derivatives of 2-thiouracil, 6-aza-uracil and 2-thio-6-azathymine. 
  Reference    (Z. Naturforsch. 27b, 818—821 [1972]; received November 23 1971/March 27 1972) 
  Published    1972 
  Keywords    Hydrazino-Pyrimidine Derivatives, Hydrazino-Azapyrimidine Derivatives, Antibacterial Activity 
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 TEI-XML for    default:Reihe_B/27/ZNB-1972-27b-0818.pdf 
 Identifier    ZNB-1972-27b-0818 
 Volume    27 
4Author    V. Bankova3, R. Christov3, A. Kujumgievb, M. C. Marcuccic, S. Popov3Requires cookie*
 Title    Chemical Composition and Antibacterial Activity of Brazilian Propolis  
 Abstract    Four samples of Brazilian propolis were investigated by GC/MS of different fractions. 32 volatile compounds, (10 of them new for propolis), as well as 12 more polar compounds (one of them new for propolis) were identified. Antibacterial activity was found in some propolis fractions. 
  Reference    Z. Naturforsch. 50c, 167 (1995); received January 10/January 20 1995 
  Published    1995 
  Keywords    Propolis, Polyphenols, Volatiles, GC/MS, Antibacterial Activity 
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 TEI-XML for    default:Reihe_C/50/ZNC-1995-50c-0167.pdf 
 Identifier    ZNC-1995-50c-0167 
 Volume    50 
5Author    V. Bankova3, M. C. Marcuccib, S. Simova3, N. Nikolova3, A. Kujumgievc, S. Popov3Requires cookie*
 Title    Antibacterial Diterpenic Acids from Brazilian Propolis  
 Abstract    Four labdane-type diterpenic acids and syringaldehyde were isolated and identified from Brazilian propolis. A ll the com pounds exhibit antibacterial activity. The diterpenes, found for the first time in propolis, are typical for som e Araucaria species and thus indicate a possible plant source of Brazilian propolis. 
  Reference    Z. Naturforsch. 51c, 277 (1996); received Novem ber 23 1995/January 24 1996 
  Published    1996 
  Keywords    Propolis, Diterpenic Acids, Antibacterial Activity, Propolis Plant Sources 
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 TEI-XML for    default:Reihe_C/51/ZNC-1996-51c-0277.pdf 
 Identifier    ZNC-1996-51c-0277 
 Volume    51 
6Author    Oliver Kayser, H. Erbert KolodziejRequires cookie*
 Title    Antibacterial Activity of Simple Coumarins: Structural Requirements for Biological Activity  
 Abstract    The antibacterial activity of a series of simple coumarins was evaluated against 8 microor­ ganisms, including three Gram-positive (Staphylococcus aureus, beta-hemolytic Streptococcus and Streptococcus pneum oniae) and five Gram-negative bacteria (Escherichia coli, Klebsiella pneum oniae, Pseudom onas aeruginosa, Proteus mirabilis and H aemophilus influenzae), using the microdilution broth method. The coumarins tested showed broad diversity regarding growth inhibitory activity with minimum inhibitory concentrations ranging from 0.9 to >12.4 (j.M . This study, presenting the first systematic analysis of structure-activity relationships among this group of coumarins, revealed some interesting structural requirements. While coumarins with a methoxy function at C-7 and, if present, an OH group at either the C-6 or C-8 position are invariably effective against the spectrum of tested standard bacteria (Gram-negative microorganisms including the Gram-positive bacterium Staphylococcus aureus), the presence of an aromatic dimethoxy arrangement is apparently favourable against those mi­ croorganisms which require special growth factors (beta-hemolytic Streptococcus, Streptococ­ cus pneum oniae and Haem ophilus influenzae). A combination of these structural features, two methoxy functions and at least one additional phenolic group as reflected by the highly oxygenated coumarins, identify promising candidates with antibacterial broad-spectrum ac­ tivity. 
  Reference    Z. Naturforsch. 54c, 169—174 (1999); received November 11/December 8 1998 
  Published    1999 
  Keywords    Coumarins, Antibacterial Activity, Structure-Activity Relationships 
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 TEI-XML for    default:Reihe_C/54/ZNC-1999-54c-0169.pdf 
 Identifier    ZNC-1999-54c-0169 
 Volume    54 
7Author    Nikos Mihopoulosac, Constantinos Vagias3, Ioanna Chinou3, Christos Roussakisb, Michael Scoullosc, Catherine Harvala3, Vassilios Roussis3Requires cookie*
 Title    Antibacterial and Cytotoxic Natural and Synthesized Hydroquinones from Sponge Ircinia spinosula  
 Abstract    In order to check the structure-activity relationship and find more potent derivatives of the natural products 1 and 2 obtained from sponge Ircinia spinosula, a series of oxidation, hydrogenation, acetylation and methylation derivatives was prepared. All compounds (natu­ ral and synthetic ones) were screened for their cytotoxic and antibacterial activities. The biological studies showed a wide range of antibacterial activity even though only 2 and 2d showed a moderate cytotoxicity against the clone C98. The oxidation of the hydroquinone to quinone and the hydrogenation of the side-chain increased the antibacterial effect of the molecules. 
  Reference    Z. Naturforsch. 54c, 417 (1999); received January 29/March 9 1999 
  Published    1999 
  Keywords    Ircinia spinosula, Polyprenylated Hydroquinone, Synthetic Derivative, Antitumoral Activity, Antibacterial Activity 
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 TEI-XML for    default:Reihe_C/54/ZNC-1999-54c-0417.pdf 
 Identifier    ZNC-1999-54c-0417 
 Volume    54