• Publications
  • Influence
Bioactive Diterpenoids Isolated from Salvia mellifera
Antimicrobial activity against some Gram (+) bacteria was observed for the diterpenoids ferruginol, taxodione, 7α‐hydroxi‐royleanone and demethylsalvican‐11‐12‐dione. Expand
Purification and peptidase activity of a bacteriolytic extracellular enzyme from Pseudomonas aeruginosa.
A bacteriolytic enzyme excreted by Pseudomonas aeruginosa Paks I was purified: samples were found to be homogeneous by gel filtration chromatography, ion exchange chromatography using CM-cellulose,Expand
Effect of the fungicide captafol on the survival and symbiotic properties of Rhizobium trifolii
Results indicate that captafol may act as a plasmid-curing agent in R. trifolii, indicating that the genetic alteration leading tocaptafol resistance was not necessarily detrimental to the ability of the bacteria to form nitrogen fixing nodules. Expand
Structure—antimicrobial activity relationships of abietane diterpenes from Salvia species
The results obtained show that the free catechol grouping is essential for antimicrobial activity against Gram-positive bacteria and that activity appears to be independent of the closing position of the lactone group in the class A compounds. Expand
Precipitation of Metallic Cations by the Acidic Exopolysaccharides from Bradyrhizobium japonicum and Bradyrhizobium (Chamaecytisus) Strain BGA-1
The results suggest that the precipitation is based on the interaction between carboxylate groups from different polysaccharide chains and the partially hydrolyzed aquoions of Fe, Al, Th, and Sn. Expand
The relationship between structure and antimicrobial activity in quinones from the Celastraceae
Triterpene quinones and related compounds isolated from Schaefferia cuneifolia Standley and Maytenus horrida Reiss were assayed for antimicrobial activity, but did not affect Gram negative bacteria. Expand
Alcian blue fixation allows silver staining of the isolated polysaccharide component of bacterial lipopolysaccharides in polyacrylamide gels
Treatment with Alcian Blue may prove useful to detect hydrophilic components of lipopolysaccharide samples that could no longer be stained by the usual silver staining procedures. Expand
Effects of staphylolytic enzymes from Pseudomonas aeruginosa on the growth and ultrastructure of Staphylococcus aureus.
Pseudomonas aeruginosa produces two extracellular staphylolytic enzymes able to lyse Staphylococcus aureus cells when they are added to liquid cultures of S. aureus. In addition, when cultivation wasExpand
Characterization of an aromatic amino acid aminotransferase from Rhizobium leguminosarum biovar trifolii.
The most abundant aromatic amino acid aminotransferase of Rhizobium leguminosarum biovar trifolii was partially purified and used aromatic keto acids and alpha-ketoglutaric and oxalacetic acids as amino-group acceptors. Expand