Citric acid is an important organic acid, also known as citric
acid, colorless crystals, often containing a molecule of
crystalline water, odorless, has a strong sour taste, easily
soluble in water. Its calcium salts are easier to dissolve in cold
water than in hot water, and this property is often used to
identify and separate citric acid. Anhydrous citric acid can be
obtained by controlling the appropriate temperature during
crystallization. It has many uses in industry, food industry,
makeup industry, etc. For use in the food industryBecause
citric acid has a mild and refreshing sour taste, it is commonly
used in the manufacture of various beverages, soft drinks, wine,
candy, snacks, biscuits, canned juices, dairy products and other
foods. In all organic acid markets, citric acid has a market share
of more than 70%, and so far there is no sour agent that can
replace citric acid. Monomolecular crystalline water citric acid is
mainly used as an acidic flavoring agent for refreshing drinks,
juices, jams, fruit sugars and canned food, etc., and canned foods,
and can also be used as an antioxidant in edible oils. At the same
time, it improves the sensory properties of food, enhances appetite
and promotes the digestion and absorption of calcium and phosphorus
substances in the body. Citric acid anhydrous is used in large
quantities in solid beverages. Citric acid salts such as calcium
citrate and iron citrate are fortified agents that require the
addition of calcium and iron ions in some foods. Citric acid esters
such as triethyl citrate can be used as non-toxic plasticizers,
plastic films for food packaging, and are acidulants and
preservatives in the beverage and food industries. For use in
the chemical and textile industriesCitric acid can be used as a
reagent for chemical analysis in chemical technology, as a
laboratory reagent, a chromatographic analysis reagent and a
biochemical reagent; Used as a complexing agent, masking agent;
Used to prepare buffer solutions. The use of citric acid or citrate
as a builder can improve the performance of washing products, can
quickly precipitate metal ions, prevent contaminants from
reatdhesing to the fabric, and maintain the alkaline nature
necessary for washing; Disperse and suspend dirt and ash; Improve
the performance of surfactants, is an excellent chelating agent; It
can be used as a reagent to test the acid resistance of
architectural ceramic tiles.Formaldehyde pollution of clothing is
already a very sensitive problem, citric acid and modified citric
acid can be made into a formaldehyde-free anti-wrinkle finishing
agent, used for pure cotton fabric wrinkle-proof finishing. Not
only is the anti-wrinkle effect good, but also the cost is
low. For environmental protectionCitric acid-sodium
citrate buffer is used for flue gas desulfurization. China is rich
in coal resources and is a major part of the energy source, but
there has been a lack of effective flue gas desulfurization
processes, resulting in serious atmospheric SO2 pollution. At
present, China's ANNUAL SO2 emissions have reached nearly 40
million tons, and it is imperative to study an effective
desulfurization process. Citric acid-sodium citrate buffer solution
is a desulfurization absorber with great development value due to
its low vapor pressure, non-toxicity, stable chemical properties
and high absorption rate of SO2 Used in
cosmeticsCitric acid belongs to a kind of fruit acid, the main role
is to accelerate the renewal of keratin, commonly used in lotions,
creams, shampoos, whitening products, anti-aging products, acne
products and so on. The renewal of keratin contributes to the
peeling of melanin in the skin, the tightening of pores, the
dissolution of blackheads, etc. For example, Bioquan Vitae Soothing
Cleansing Mousse makes the skin soft and comfortable, and the
complexion is fresh and pure. For sterilizationThe
combined action of citric acid with 80 °C temperature has a good
effect of killing bacterial spores, and can effectively kill
contaminated bacterial spores in the pipeline of hemodialysis
machines. Lemons, which enjoy the reputation of "the king of
Western food", have a strong bactericidal effect, which is very
good for food hygiene, coupled with the fragrant smell of lemons,
people have always liked to use it to make cold dishes, which is
not only delicious and refreshing, but also enhances
appetite. For medicinal purposesCalcium ions must be
involved in the formation of prothrombin activators and later in
the coagulation process. Citric acid ions and calcium ions can form
a soluble complex that is difficult to dissociate, thereby reducing
the concentration of calcium ions in the blood and hindering blood
coagulation. The product is used as an in vitro anticoagulant
during blood transfusion or laboratory blood sample
anticoagulation. /* January 22, 2024 19:08:37
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