It is divided into organic acid, inorganic acid, and complex acidifier, which can improve the intestinal environment, increase the substance conversion rate, inhibit the harmful bacteria in the intestinal tract, and promote the growth of animals.
organic acid : citric acid
For the food industry
Because citric acid has a mild and sour acidity, it is commonly used in the manufacture of various beverages, sodas, wines, candies, snacks, biscuits, canned juices, dairy products and the like. In the market of all organic acids, citric acid market share of more than 70%, flavoring agents, can also be used as antioxidants in edible oils. At the same time, it improves the sensory traits of food, enhances appetite and promotes the digestion and absorption of calcium and phosphorus substances in the body. Anhydrous citric acid is used in large quantities in solid beverages Salts of citric acid such as calcium citrate and ferric citrate are fortifiers that require the addition of calcium and iron ions in certain foods. Esters of citric acid, such as triethyl citrate, can be used as a non-toxic plasticizer to make plastic film for food packaging. It is a sour agent and preservative in the beverage and food industry.
Used in the chemical and textile industries
Citric acid can be used as a chemical analysis reagent for chemical analysis, as an experimental reagent, a chromatographic reagent and a biochemical reagent; as a complexing agent and a masking agent; for preparing a buffer solution. The use of citric acid or citrate as a builder can improve the performance of the washing product, can quickly precipitate metal ions, prevent the re-attachment of contaminants on the fabric, maintain the necessary alkalinity for washing, and disperse and suspend the dirt and ash; It is an excellent chelating agent for improving the performance of surfactants; it can be used as an acid-resistant reagent for testing architectural ceramic tiles.
Formaldehyde pollution of clothing has become a very sensitive problem. Citric acid and modified citric acid can be made into a formaldehyde-free anti-wrinkle finishing agent for anti-wrinkle finishing of cotton fabrics. Not only is the anti-wrinkle effect good, but the cost is low.
For environmental protection
Citric acid-sodium citrate buffer is used for flue gas desulfurization. China is rich in coal resources and is a major component of energy. However, there has been a lack of effective flue gas desulfurization processes, resulting in serious atmospheric SO2 pollution. It is imperative to study an effective desulfurization process. The citric acid-sodium citrate buffer solution is a developmental desulfurization absorbent because of its low vapor pressure, non-toxicity, stable chemical properties, and high SO2 absorption rate.
For poultry production
Adding citric acid to piglet feed can early weaning, increase feed utilization by 5% to 10%, and increase sow litter size. Adding 1% to 2% citric acid to the growing and finishing pig diet can increase daily gain, reduce feed to meat ratio, increase protein digestibility, reduce back fat thickness, and improve meat quality and carcass characteristics. Rare earth citrate is a new type of high-efficiency feed additive suitable for pigs, chickens, fish, shrimps, cattle, sheep, rabbits, silkworms and other animals. It promotes animal growth, improves product quality, and improves disease resistance and survival rate. Improve the feed conversion rate and shorten the feeding cycle.
Citric acid is a kind of fruit acid. Its main function is to accelerate the renewal of keratin. It is often used in lotion, cream, shampoo, whitening products, anti-aging products, acne products and so on. The renewal of keratin helps the exfoliation of melanin in the skin, the shrinkage of pores, the dissolution of blackheads, and the like.
The combination of citric acid and temperature at 80 ° C has a good effect of killing bacterial spores and can effectively kill contaminated bacterial spores in the hemodialysis machine pipeline. Lemon, which enjoys the reputation of "king of western food", has a strong bactericidal effect and is good for food hygiene. Coupled with the fragrant smell of lemon, people have always liked to use it to make cold dishes, which is not only delicious but also appetizing.
In the formation of prothrombin activator and subsequent coagulation, calcium ions must be involved. The citrate ion and the calcium ion can form a soluble complex which is difficult to dissociate, thereby lowering the calcium ion concentration in the blood and blocking the blood coagulation. This product is used as an in vitro anticoagulant when blood transfusion or laboratory blood sample anticoagulation.
Chemical processing or deep processing of citric acid
Another major use of citric acid is deep processing, which is a rich industrial chain.