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Main uses:Citric acid is the first organic acid in organic acids, because of its physical and chemical properties,derivativeIt is the most important organic acid which is widely used in food, medicine, daily chemical and other industries.
Because citric acid has a mild and refreshing acidity, it is widely used in various beverages,Soda、WineSweets and pastries,BiscuitsThe manufacture of canned food, fruit juice, dairy products and other foods. Citric acid has a market share of more than 70% in all organic acids market, and there is no acid agent that can replace citric acid. A crystalline water, citric acid, is used mainly as a moleculeCool drinkJuice,Jam、Fruit dropAcidity of cans and so onFlavoring agentIt can also be used as cooking oilAntioxidant. At the same time, improve the sensory properties of food, enhance appetite and promote the digestion and absorption of calcium and phosphorus in the body. Anhydrous citric acid is used in large quantitiessolid drinks. Citric acidsaltCalcium citrate and so onFerric citrateIt's something that needs to be added in some foodscalcium ionIron ion fortifier. Citric acid esters, such as citric acid three ethyl ester, can be used as non-toxic plasticizers, plastic packaging for food packaging, beverages and food industry sour, preservatives.
Citric acid can be used as a reagent for chemical analysis in chemical technology. It can be used as an experimental reagent, a chromatographic analysis reagent and a biochemical reagentcomplexing agentA masking agent; used to make upbuffer solution. Using citric acid or citric acid salts as a builder, which can improve the performance of washing products, can rapid precipitation of metal ions, to prevent contaminants adhere to the fabric, keep washing necessaryalkalinityTo make dirt and ash disperse and suspend; to improvesurface active agentIt is a good chelating agent. It can be used as a reagent to test the acid resistance of building ceramic tiles.
GarmentformaldehydePollution is a very sensitive issue, citric acid and citric acid can be modified into a formaldehydeless Creaseproofing rectifying agent for cotton fabricCrease resistant finishing. Not only wrinkle proof effect is good, but also the cost is low.
Citric acid -Sodium citrateBuffer used in flue gasDesulphurization. China is rich in coal resources, which constitutes the main part of energy. However, there is a lack of effective flue gas desulfurization technology, which leads to serious SO2 pollution in the atmosphere. At present, China's SO2 emissions are nearly 40 million tons, it is urgent to study effective desulfurization process. Citric acid sodium citrate buffer solution because of its low vapor pressure, non-toxic, chemically stable, SO2 absorption rate is very high, desulfurization absorbent development value.
PigletsfeedAdding citric acid can early weaning, improve feed utilization rate 5% ~ 10%, increase sow litter size. Adding 1% ~ 2% citric acid in the diet of growing finishing pigs can increase daily gain, reduce feed to meat ratio, and increase the ratio of feed to meatProtein digestibilityReduce the back fat thickness, improve meat quality and carcass characteristics. Rare earth citrate is a new type of high efficiencyfeed additiveThat is suitable for pig, chicken, fish, shrimp, cattle, sheep, rabbit, silkworm and other animal, promote animal growth, improve product quality, improve disease resistance and improve the survival rate.Feed conversion rateShorten the feeding cycle and so on.
Citric acid combined with 80 temperature has good killing effectBacteriaSpores can kill blood effectivelydialysisContamination of bacteria in the pipe lineBacillus. Enjoy the reputation of "king of Western food" lemon has a strong bactericidal effect, rightFood HygieneVery good, plus a scent of lemon, people always love making salad, not only delicious, but also to enhance the appetite.
stayprothrombinCalcium must be involved in the formation of activators and subsequent coagulation processes. Citrate ions and calcium ions form a soluble form that is difficult to dissociateComplex compoundTherefore, the concentration of calcium ion in blood is reduced, and the blood coagulation is blocked. This product is used as anticoagulant in blood transfusion or laboratory anticoagulant.
Chemical processing or deep processing of citric acid 8.
In addition to the above citric acid itself, citric acid is another major use of deep-processing, which is a rich and colorful industry chain.
Citric acid is a hydroxy acid, in which there are four active groups, three carboxyl groups and one hydroxyl group. The four groups are esterified or alcoholysis or acylation reaction, generating esters, common products Trimethyl Citrate, citric acid ethyl ester three, citric acid three, citric acid three butyl octyl acetate, citric acid three, citric acid three butyl; carboxyl of citric acid can also become salt. Common products are sodium citrate, ammonium citrate, calcium citrate, ferric citrate and ferric ammonium citrate etc..
Tips for eating citric acidOften drinkYoghurt：YogurtContained inlactic acidAnd some other organic acids such as citric acid with the Portuguese, the dilution also has the sterilization and preservation effect, known as the mucosa of the "cleaning agent", sticky surface it helps soften the skin, remove the old dead cells, in this process, the wrinkles also will be eliminated.
Citric acid can also be used to produce the stomach acid drink, is a good choice for people who often drink gastric acid, gastric acid is citric acid after eating fruit or food with relaxation effect. But because when I drink drink acid stomach without food or food is not caused by, or health drink.
eat fruitReduce weightThat is not the girl of love is one of the most used method. Every 100 grams of lemon contains only 24CalorieQuantity of heat。 Citric acid lemon can promote energy metabolism, and itVitaminThe content of C is the leader in fruit, whitening effect is good, low heat, love to thin women can eat, but avoid fasting to eat. Like otherLitchi，OrangeAnd the grapes are rich in citric acid.
Vitiligo patients can't take acid containing citric acid is a kind of thing.
In our country, the provisions to allow the use ofAcidulateWith acetic acid, citric acid,Potassium citrateLactic acid,tartaric acid17. The use of citric acid is an acidifying agent widely. As acidifying agent and additives, the national standard is not the limited use, the food and Agriculture Organization (FAO) and WHO (WHO) announced the permitted daily consumption (ADI) is not to be limited use. From the above, people need to use citric acid treated food too much about