First, an overview

Sodium diacetate is efficient, broad-spectrum antibacterial and antifungal agent, especially has strong inhibition on Aspergillus flavus, can effectively inhibit the 10 kinds of mildew element and the breeding and spread of a variety of bacteria, which can be used for food preservation can also be used to feed mildew and improve the nutritional value, palatability enhancement. Sodium diacetate was the first to be used for bread mildew; abroad began to grain, corn and feed mildew preservation, effect is obvious; the United States Food and Drug Administration approved, through the Gras (generally regarded as safe) qualification. At present, the United Nations Food and Agriculture Organization (FAO) and the World Health Organization (who) approved sodium diacetate as food, food, feed mould inhibitor. Sodium diacetate is China's Ministry of health and other departments approved new varieties of food additives, in recent years, the domestic research and development of more active, production and application is being promoted.

Sodium diacetate, its English name sodium hydrogen Diacetate referred to as SDA, chemical formula CH3COONa CH3COOH - xH2O or NAH (ch3co2) 2, the molecular weight of anhydrous material 142.09, white crystal, acetic acid odor, easily absorb moisture, easily soluble in water and alcohol, crystal structure is a regular hexahedron, length of 15.98 angstrom, the melting point of 96 97 DEG C, heated to 150 DEG C above decomposition, is following the propionic acid salts and fumaric acids after development of the development and application of the feed mildew inhibitor new varieties.

Two, the main use

1 food preservatives

The food in the storage and circulation process of the loss, half is caused by mildew and rot. Sodium diacetate can be used for all food preservatives, the storage period is extended for 4 months. The silage of rice, wheat, peanuts, beans and so on mould proof test, sodium diacetate can significantly inhibited the growth of mold, anti mildew preservation, palatability. Usually grains to be dried to below 19% of the water can be stored, of moisture content for 21.5% of cereal added 0.1% - 0.8% sodium diacetate, the storage time can be from 90 days extended to more than 200 days, without drying, saves time and effort. Analyze the real purpose of the mainstream funds and find the best profit opportunities! )

2 feed mildew

With the development of feed preservative feed industry came into being, the demand increased year by year. Use value greatly reduced was without fungicide feed especially under high humidity conditions, will soon produce mildew, the feed nutrients destroyed. At the same time, the transfer will be generated from livestock mildew toxins into the body, affect human health. Sodium diacetate mildew mechanism is lowering the water activity, and make the bacterial protein denaturation, by changes in cell shape and structure, to make the cell to die of dehydration, thus to mildew role. This product is 0.1 ~ 1.5% in the feed, mildew can effectively inhibit the feed, the storage period is prolonged for more than three months. At the same time enhance livestock on feed palatability, improve the utilization rate of crude protein in feed, improve the milk yield of dairy cows, milk fat percentage, pig lean meat rate and sow the fetal rate.

Preservative 3 kinds of food, fruit, meat, fish and shrimp etc.

Due to the sodium diacetate with acetic acid, acetic acid molecules and lipid solubility of these compounds better, acetic acid through the cell wall enable intracellular protein denaturation and antiseptic effect, so sodium diacetate is a good preservative, is a kind of excellent chelating agent, to extend the food preservation period and improve food flavor of the dual role. In the bread to add 0.2 ~ 0.4% sodium diacetate can extend shelf life and flavor does not change, in the dough by adding 0.2% sodium diacetate, at 37 deg.c save time by 3 hours extended to 72 hours. General grease, meat products, candy dosage of 0.1%; dosage of condiment is 0.25%; baking food is 0.4%; Cereals, soy products and pasta dosage is 0.1%.

4 veterinary drugs

Sodium diacetate can treat swine dysentery, and can improve the fertility of sows. Add 0.05% to 0.1% sodium diacetate in Turkey, drinking water, control and treatment of hemorrhagic enteritis.

In addition, double sodium acetate is also used as a chelating agent for the pharmaceutical industry, chemical industry of homogenizing agent and a buffer, mordant dye industry, machinery industry plating additive prepared sour flavoring agent as well as for the reaction of salicylaldehyde with anhydride in preparation of coumarin.

Three. Development at home and abroad

1920s foreign chemical method for the synthesis of sodium diacetate, early 1940s America will tried to apply it in the bread mold, in the 1970s for grain and feed mildew preservation, have achieved good results. In 1985, the United Nations Food and Agriculture Organization and the World Health Organization (FAO / who) approved sodium diacetate as food and feed preservative. In 1989, China's food hygiene standards will be listed for food and food preservative and as one of the China's focus on the development of fine chemical products, at present China's Ministry of health and the Bureau of technical supervision also approved to allow its use as a food and feed additive.

In China in the early 1990s began to research and development of sodium diacetate and put into market in 1994, industrial grade products to American VITACROP standard, food additives to FCC standards in the United States. Due to the sodium diacetate development and promotion application started late, compared with foreign countries, there are manufacturer is less, yield is low, unreasonable layout, application is not a common problem. At present, the major manufacturers are Jiangsu province Lianyungang Shuren Kechuang food additives Co., Ltd. more than and 10.

Four, the domestic market prospects
1 in line with China's industrial policy, is the country to encourage the development of one of the key products