In our daily life, sodium citrate appears in all kinds of raw materials around us. How many people have known about it? Are you clear about its functions, features and uses? Let's take a look at some of its secrets.
Sodium citrate is the most important citrate at present, which is mainly produced by fermentation of starch and neutralization with alkali
It is safe and nontoxic. As the raw materials for the preparation of sodium citrate are basically from grain, it is absolutely safe and reliable, and will not harm human health. The food and Agriculture Department of the United Nations and the World Health Organization have no restrictions on its daily intake, so it can be considered as non-toxic.
It is biodegradable. Sodium citrate is diluted by a large amount of water in nature, and part of it becomes citric acid. Both of them coexist in the same system. Citric acid is easily biodegradable in water by the action of oxygen, heat, light, bacteria and microorganisms. Its decomposition pathway is generally aconitic acid, itaconic acid and citric anhydride, which are converted into carbon dioxide and water.
It has the ability of metal ion complexation. Sodium citrate has good complexation ability for Ca2 +, Mg2 + and other metal ions, such as Fe2 + plasma.
Excellent solubility, and the solubility increases with the increase of water temperature.
It has good pH adjustment and buffering performance. Sodium citrate is a kind of weak acid and strong base salt, which can form a strong pH buffer when combined with citric acid, so it has important use in some occasions where pH is not suitable for large range change. In addition, sodium citrate has excellent retarding performance and stability.
The application of sodium citrate can be divided into three categories
Food application: sodium citrate can be used in cool drinks to ease the sour taste and improve the taste. In the production of ice cream and ice cream, sodium citrate can be used as emulsifier and stabilizer, the dosage is 0.2% ~ 0.3%. This product can also be used as anti rancidity agent for dairy products, tackifier for processed cheese and fish products, and sweetener corrector for food.
Sodium citrate is nontoxic, pH adjustable and stable, so it can be used in food industry. Sodium citrate is used as food additive with the largest demand. It is mainly used as seasoning agent, buffer, emulsifier, expander, stabilizer and preservative. In addition, sodium citrate is compatible with citric acid and used as gelling agent, nutritional supplement and flavor agent for jam, jelly, juice, beverage, cold drink, dairy products and cakes.
Pharmaceutical applications: in medicine, sodium citrate is also widely used. It can be used as anticoagulant and blood transfusion agent to preserve and process blood products. Sodium citrate as a preservative is used to preserve syrup and other drugs. Sodium citrate injection, like potassium salt, is used to correct the acidity of blood, body fluid and urine, as a diuretic and expectorant. Sodium citrate combined with other reagents can be used to extract and purify animal liver RNA.
3. Chemical application: sodium citrate has good water solubility, excellent chelating ability to Ca2 +, Mg2 + and other metal ions in water, biodegradation, dispersing ability and strong anti redeposition ability, so it is gradually becoming a substitute for sodium tripolyphosphate, and is used to produce phosphorus free washing powder, especially phosphorus free liquid detergent. Adding a certain amount of sodium citrate into the detergent can significantly increase the decontamination ability of the detergent.
Desheng biotechnology is a professional manufacturer of vascular additives, in vitro diagnostic reagents, biological buffers, luminescent substrates and enzyme preparations. It has independent intellectual property rights and professional R & D and production capacity in the aspect of blood vessel additives, and can produce a variety of products. Desheng has been established for many years and has rich production experience. At present, its products are sold to more than 100 countries all over the world with excellent quality and favorable price. Interested in understanding can call consultation, Desheng welcome your call.
