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Bromothymol blue (also known as bromothymol sulfone phthalein and BTB) is a pH indicator. It is mostly used in applications that require measuring substances that would have a relatively neutral pH (near 7). A common use is for measuring the presence of carbonic acid in a liquid.
The increase in pH then causes color change in the bromothymol blue indicator, turning it blue. Under neutral conditions the medium remains a green color. The color change to blue is useful because growth on Simmons' citrate agar is often limited and would be hard to observe if it were not for the color change.
Place bromothymol blue in a jar with a plant. Bromothymol blue is then "exposed" to carbon dioxide (exhale into jar). Bromothymol Blue is now yellow color. During photosynthesis, the plant takes in carbon dioxide and gives out oxygen. will bromothhymol blue turn blue again I'm not so sure that stomach contents will be blue; the pH of the ...
Bromophenol is also used as a colour marker to monitor the process of agarose gel electrophoresis and polyacrylamide gel electrophoresis.Since bromophenol blue carries a slight negative charge at moderate pH, it will migrate in the same direction as DNA or protein in a gel; the rate at which it migrates varies according to gel density and buffer composition, but in a typical 1% agarose gel in ...
The species was first described scientifically by American mycologist Howard James Banker in 1913. [2] Italian Pier Andrea Saccardo placed the species in the genus Hydnum in 1925, [3] while Walter Henry Snell and Esther Amelia Dick placed it in Calodon in 1956; [4] Hydnum peckii (Banker) Sacc. and Calodon peckii Snell & E.A. Dick are synonyms of Hydnellum peckii.
Other uses of organobromine compounds include high-density drilling fluids, dyes (such as Tyrian purple and the indicator bromothymol blue), and pharmaceuticals. Bromine itself, as well as some of its compounds, are used in water treatment, and is the precursor of a variety of inorganic compounds with an enormous number of applications (e.g ...
The fruit is a small achene. Seed dispersal occurs by gravity. [5] A. absinthium grows naturally on uncultivated arid ground, on rocky slopes, and at the edge of footpaths and fields. Although once relatively common, it is becoming increasingly rare in Britain, where it has recently been suggested to be an archaeophyte rather than a true native ...
Roselle juice, often taken refrigerated, is a cool drink found in many West African countries and the Caribbean. [5] [6] It is a dark red-purple coloured juice.The Burkinabes, Senegalese, and Ivorians call it bissap, [7] the Nigerians call it zobo while the Ghanaians call it Zobolo. [8]