phenol red การใช้

• Phenol red solution is administered intravenously, the urine produced is collected.
• By measuring the amount of phenol red excreted colorimetrically, kidney function can be determined.
• The test is based on the fact that phenol red is excreted almost entirely in the urine.
• For example, phenol red exhibits an orange color between pH 6.8 and pH 8.4.
• Using phenol red as a differentiation factor, they produced human oocytes ( eggs ) from cells scraped from the surface of adult ovaries.
• Such cells had been taken from five women aged 39 to 52 and were cultured in the presence of phenol red, inducing oogenesis.
• Since the color of phenol red can interfere with some fluorescent assays, many types of tissue culture media are also available without phenol red.
• Since the color of phenol red can interfere with some fluorescent assays, many types of tissue culture media are also available without phenol red.
• In several sources, the structure of phenol red is shown with the sulfur atom being part of a cyclic group, similar to the structure of phenolphthalein.
• At about 70 % of confluence, the initial medium was replaced by another one lacking the amino acids Methionine, Leucine, Ile and Valine, as well as phenol red.
• Bromothymol blue has been used in conjunction with phenol red to monitor the fungal asparaginase enzyme activity with phenol red turning pink and bromothymol blue turning blue indicating an increase in pH and therefore enzyme activity.
• Bromothymol blue has been used in conjunction with phenol red to monitor the fungal asparaginase enzyme activity with phenol red turning pink and bromothymol blue turning blue indicating an increase in pH and therefore enzyme activity.
• OF-glucose deeps contain glucose as a carbohydrate, peptones, bromothymol blue indicator for Hugh-Leifson's OF medium or phenol red for King's OF medium, and 0.5 % agar.
• Several indicators share a similar structure to phenol red, including bromothymol blue, thymol blue, bromocresol purple, thymolphthalein, and phenolphthalein . ( A table of other common chemical indicators is available in the article on pH indicators .)
• Most cells are grown in tissue culture, the medium in which they grow is held close to this physiological pH . A small amount of phenol red added to this growth medium will have a pink-red color under normal conditions.
• This type of media uses the biochemical characteristics of a microorganism growing in the presence of specific nutrients or indicators ( such as neutral red, phenol red, eosin y, or methylene blue ) added to the medium to visibly indicate the defining characteristics of a microorganism.
• High levels of bromine can convert phenol red to bromophenol red ( dibromophenolsulfonephthalein, whose lowered p " K " a results in an indicator with a range shifted in the acidic direction-water at pH 6.8 will appear to test at 7.5 ).
• The "'TSI slant "'is a test tube that contains agar, a pH-sensitive dye ( phenol red ), 1 % lactose, 1 % sucrose, 0.1 % glucose, as well as sodium thiosulfate and ferrous sulfate or ferrous ammonium sulfate.