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4-Aminophenol (or para-aminophenol or p-aminophenol) is an organic compound with the formula H 2 NC 6 H 4 OH. Typically available as a white powder, [ 3 ] it is commonly used as a developer for black-and-white film , marketed under the name Rodinal .
Once the cheese curd is judged to be ready, the cheese whey must be released. As with many foods the presence of water and the bacteria in it encourages decomposition. To prevent such decomposition it is necessary to remove most of the water (whey) from the cheese milk, and hence cheese curd, to make a partial dehydration of the curd. There are ...
The three aminophenol isomers: Left: 2-Aminophenol (o-aminophenol) Center: 3-Aminophenol (m-aminophenol) Right: 4-Aminophenol (p-aminophenol) Aminophenol may refer to any of three isomeric chemical compounds: 2-Aminophenol; 3-Aminophenol; 4-Aminophenol; They are simultaneously an aniline and a phenol
Once the rennet is added, the mixture must be allowed to set and form curds. The mixture is kept at around 29 to 31 °C (84 to 88 °F). Temperature is controlled by flowing warm water through the jacket of the vat. Setting time varies, and allowing a proper amount of time is vital. It takes anywhere from 30 to 40 minutes to set the curd.
Recovery time is the length of time it takes a cooking medium, such as fat or water, to return to the desired cooking temperature after the food is submerged in it. [ 1 ] [ 2 ] The term also pertains to the recovery time for ovens to return to their preset cooking temperature after being opened.
Cheese ripening, alternatively cheese maturation or affinage, is a process in cheesemaking. It is responsible for the distinct flavour of cheese, and through the modification of " ripening agents ", determines the features that define many different varieties of cheeses, such as taste, texture, and body. [ 2 ]
Typically 60 ml (1 ⁄ 4 cup) water at 40–45 °C (105–115 °F) and 2 g (1 ⁄ 2 teaspoon) of sugar are used, [5] or expressed differently, a sugar weight of about 3.5% of the water's weight. While this sugar may be sucrose or table sugar, instead it may be glucose or maltose .
RODINAL. Rodinal is the trade name of a black and white developing agent produced originally by the German company Agfa based on the chemical 4-aminophenol. [1] Rodinal is a popular high acutance black and white developer and is used at different dilutions for development in rotary machines, by agitation, as well as for stand development.