Related Products of 18464-25-0, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.18464-25-0, Name is N1,N5-Didodecyl-N1,N1,N5,N5-tetramethylpentane-1,5-diaminium bromide, molecular formula is C33H72Br2N2. In a Article£¬once mentioned of 18464-25-0
Influence of gemini surfactants on biochemical profile and ultrastructure of Aspergillus brasiliensis
In this study, we investigated the activities of hexamethylene-1,6-bis-(N,N-dimethyl-Ndodecylammonium bromide) (C6), pentamethylene-1,5-bis-(N,N-dimethyl-N-dodecylammonium bromide) (C5), and their two neutral analogues: hexamethylene-1,6-bis-(N-methyl-Ndodecylamine) (A6) and pentamethylene-1,5-bis-(N-methyl-N-dodecylamine) (A5) at concentrations of 1/2 MIC, MIC, and 2 MIC (minimal inhibitory concentration) against hyphal forms of Aspergillus brasiliensis ATCC 16404. Enzymatic profiles were determined using the API-ZYM system. Extracellular proteins were extracted from the mycelia and analyzed using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). The ultrastructure was evaluated using a transmission electron microscope (TEM). Both groups of surfactants caused changes in the enzyme profiles. Larger changes in the number and concentration of enzymes were noted after the action of non-ionic gemini surfactants, which may have been due to the 100¡Á higher concentration of neutral compounds. Larger differences between the protein profiles of the control sample and the biocide samples were observed following the use of cationic compounds. On the basis of TEM analyses, we found that, with increasing concentrations of compound C6, the mycelium cells gradually degraded. After treatment at 2 MIC, only membranous structures, multiform bodies, and dense electron pellets remained. Based on these results, we concluded that cationic gemini surfactants, in comparison with their non-ionic analogues, could have a wide range of practical applications as active compounds.
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Reference£º
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI