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Antibacterial, antifungal and antiviral activity of propolis of different geographic origin.
It seems that propolis has general pharmacological value as a natural mixture and not as a source of new powerful antimicrobial, antifungal and antiviral compounds. Expand
Chemical Composition and Antibacterial Activity of Brazilian Propolis
Four samples of Brazilian propolis were investigated by GC/MS of different fractions and 32 volatile compounds, as well as 12 more polar compounds (one of them new for propolis) were identified. Expand
Cyclic peptides from a Ruegeria strain of bacteria associated with the sponge Suberites domuncula.
Two new cyclic peptides have been isolated from the cell extract of a Ruegeria strain associated with cell cultures of Suberites domuncula and exhibited moderate antimicrobial activity against Bacillus subtilis. Expand
Development in primary cell culture of demosponges.
The results suggest that the analysis of the chemical composition of sponge and cells give indication on the composition of the nutrient media. Expand
Minor and trace sterols in marine invertebrates 1. General methods of analysis
Fractional digitonin precipitation and alumina column chromatography were found to possess greater sterol separation abilities than previously recognized and many of the minor sterols were find to possess novel structures including a series of short side chain sterols, 19-nor sterols and 4-monomethyl sterols for which structure elucidation work is continuing. Expand
Phytochemical Evidence for the Plant Origin of Brazilian Propolis from São Paulo State
Abstract Propolis and plant secretions from three species, most frequently mentioned as botanical sources of the bee glue in Brazil (Baccharis dracunculifolia, Araucaria angustifolia and EucalyptusExpand
Comparative analysis of the volatiles from flowers and leaves of three Gentiana species
The volatiles from fresh flowers and leaves of Gentiana lutea L., Gentiana punctata L. and Gentiana asclepiadea were analyzed and 81 compounds identified, confirming the accepted taxonomical scheme of the genus Gentiana and in agreement with the evolutionary less advanced position of the yellow species. Expand
Development in a Primary Cell Culture of the Marine Sponge Ircinia muscarum and Analysis of the Polar Compounds
The results suggest that the classic mammalian nutrient medium was not satisfactory for I. muscarum cell growth, and sterols were needed to satisfy the membrane requirements. Expand
Preliminary study on biomarkers for the fungal resistance in Vitis vinifera leaves.
The leaf chemical composition of six seedlings obtained by self-pollination of the Bulgarian wine-making variety Storgozia as well as the cultivar Bouquet was investigated in the framework of a program for identification of metabolites associated with disease resistance in grape-vine. Expand
5-O-Allosylantirrinoside from Linaria species
The aerial parts of five Linaria species (L. genistifolia, L. dalmatica,L. simplex, L., pelisseriana and L. vulgaris) a no are distinguished from each other by a high degree of organization, especially in the case of the latter two. Expand