Citric acid [formula C 3 H 4 OH (COOH) 3 )] is tricarboxylic hydroxy acid. Well soluble in water. Distributed in plant tissues. In living organisms, it is included in the tricarboxylic acid cycle (see. Biological oxidation). Citric acid salts (citrates, for example, sodium citrate) are used as a means of preventing blood from clotting, in the form of additives to certain drugs, food products, etc.
Citric acid is a tribasic organic hydroxy acid.
NOEP - CH 2 - C (OH) - CH 2 - COOH
Solid crystalline substance. First discovered in the juice of unripe lemons. It is present in large quantities in currants, mountain ash, lingonberries, in beet juice, etc .; it is especially abundant in the juice of wild pomegranate fruits and in the leaves of some varieties of tobacco (as a compound with nicotine); It is also found in animals and humans. Citric acid salts are called citrates. Alkali metal citrates are highly soluble in water.
A source of obtaining citric acid are the above plants. The ability of some mold fungi to convert carbohydrates to citric acid (with a yield of up to 50%) is also used.
Citric acid is used in the food industry (in the preparation of non-alcoholic fizzy drinks), in medicine (for the preparation of some pharmacological preparations; sodium citrate is used to prevent blood clotting), in color photography (as an additive to dye solutions). Citric acid plays an important role in the metabolism of the body: it is one of the essential components of the citrate cycle, which is of great importance in the metabolism of carbohydrates, fats and proteins. See also Biological oxidation.