Quinolone antibacterial agents are currently used for the treatment of various bacterial infections. The nature of functional group at the 7 position of the quinolone ring system is known to have strong influence on the spectrum and extent of in vitro antibacterial activity. Accordingly, a series of N-L2- oxo-2-(2- furyl) and N-[2- oxyimino (2- furyl) ethyl] piperazinyl quinolone derivatives...

sudarshan churna (sc) is very potent ayurvedic medicine ; composed of 42 medicinal plants, which is used traditionally in treatment of malaria, viral fever, and bacterial infection. the present study was designated to evaluate the antimicrobial activity of aqueous extract of sudarshan churna (asc) using the paper disc diffusion method. the asc was found active against the gram-negative bacteria...

Several species of anaerobic bacteria display variable Gram stain reactions which often make identification difficult. A simple, rapid method utilizing a 3% solution of potassium hydroxide to distinguish between gram-positive and gram-negative bacterial was tested on 213 strains of anaerobic bacteria representing 19 genera. The Gram stain reaction and KOH test results were compared with the ant...

Here we describe the study of sorption high-molecular components dissolved organic matter (DOM) natural waters - humic acids by eight bacterial strains isolated from freshwater. Isotherms DOM cells are described Langmuir equation. Gram-positive bacteria adsorb more than gram-negative bacteria, with high molecular weight fractions binding in a relatively selective manner. A positive correlation ...

The Danish microbiologist Hans Christian Gram developed a staining technique (1884) that classifies most bacteria into two large groups that are referred to eponymously, as Gram-positive and Gram-negative bacteria (1). His stain is still used in medical microbiology labs today, and because of its explanatory power, this classification is the most commonly used descriptor of a particular bacteri...