Showing papers on "Brilliant green published in 1992"

Activity of gentian violet and brilliant green against some microorganisms associated with skin infections

Abstract: The antimicrobial activity of gentian violet and brilliant green was tested against various strains of potential skin pathogens, by means of agar diffusion assay. The activity of both compounds was affected by pH. Gentian violet was found to be more active than brilliant green at pH 7.4, particularly against Pseudomonas aeruginosa. The spectrum of activity of gentian violet was not increased by the addition of brilliant green. An aqueous solution of gentian violet 0.5% turned out to be an adequate topical anti-infective drug. The preparation is particularly suitable for primary health care in tropical developing countries, because it is cheap, chemically and physically stable, and easy to prepare.

FLOW - Injection Determination of Traces of Sulfide by the Brilliant Green - Sulfide Reaction with Spectrophotometry Detection

Abstract: A flow injection system is proposed for the rapid and sensitive determination of trace amounts of sulfide based on the addition reaction of sulfide with Brilliant Green at pH 7 and 25 C° The effect of important parameters, such as reagent concentration, pH, reagent flow rate, sample volume, temperature and length of the reaction coil are reported Sulfide in the range of 40 - 2000 ng·ml−1 can be determined at a rate of 40 ± 5 samples per hour The limit of detection was obtained as 20 ng of sulfide The relative standard deviation for the determination of 100 ng·ml−1 of sulfide is 08% A system is proposed for elimination of potential interferences The method was applied to the determination of sulfide in synthetic samples and in spring water