Novel analogues of N-piperazinyl fluoroquinolones were prepared and evaluated against a panel of Gram-positive and Gram-negative bacteria, to study the effect of introducing bulky anthracene and phenanthrene moieties on the antibacterial effects of norfloxacin, ciprofloxacin and gatifloxacin. Although most of the novel synthesized compounds had lower antibacterial effects, some derivatives show...

conclusions the ppi-g2 dendrimer with end amine groups exhibited a positive impact on the removal of dominant bacterial isolated strains. therefore, it is possible to use these nanodendrimers as a safe and effective material for water disinfection in the future. results the most important isolated bacteria were escherichia coli 37 (48.7%), klebsiella oxytoca 12 (15.8%), proteus mirabilis 3 (4%)...

this study was carried out to evaluate the antimicrobial and antioxidant effectiveness of different extracts from aerial parts of six salvia species including salvia ceratophylla, salvia chorassanica, salvia leriifolia, salvia macrosiphon, salvia chloroleuca and salvia virgata. the effect of the extracts against 3 gram positive and 3 gram negative bacteria was tested by the micro dilution metho...

.co m) . was displayed by Terminalia chebula seed extract against B. cereus. In fact, this plant extract (both aqueous and ethanolic) could inhibit all the bacterial strains investigated. Out of 50 aqueous extracts, 16 extracts showed activity against any one of grampositive bacteria, while only 10 extracts showed activity against any one of gram-negative bacteria. The plant extracts inhibited ...

introduction: thymbra spicata (t. spicata) is a conventional medicinal herb which is commonly used in the folklore medicine system of iran. aim of the study was to assess the antibacterial activity of the essential oil and hudroalcholic extract of the plant t. spicata on some important bacteria. materials & methods: the essential oil and extract of t. spicata were obtained by hydrodistillation ...

A new series of 2-(5-nitro-2-heteroaryl)-1,3,4-thiadiazole derivatives, including nitro furan, nitro thiophene and nitro imidazole, were synthesized and screened in vitro for their inhibitory activity against eight bacterial strains. The results showed that most of the synthesized compounds were active against Gram-positive bacteria, determined by MIC method. Among them, compounds <str...