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Application of iron pyrophosphate

    Iron is an essential microelement in animals, A necessary component of hemoglobin and myoglobin, and is closely related to the activities of cytochrome enzyme, peroxidase, catalase, acetyl coa, succinate dehydrogenase and xanthine oxidase. Iron participates in the normal transport of oxygen in the body tissue, directly affects the ability of the body and protein metabolism, but also affects the immune function and reproductive performance of animals. Ferric pyrophosphate is yellowish white to yellowish brown crystalline powder with a slight smell of iron. Iron pyrophosphate is an iron nutritional supplement, used in milk powder, baby food and general food; Can also be used for catalysts; Anticorrosive pigment.

    Iron pyrophosphate is light in color and does not have an iron fishy taste, causing no adverse color changes and limited flavor changes to food carriers. It has high safety, little gastrointestinal irritation, no adverse reactions and side effects, and was listed as GRAS (generally recognized safe) substances by the United States Food and Drug Administration in 1994. High bioavailability, like water soluble ferrous gluconate, which is mainly due to the pyrophosphate mineral absorption mechanism of iron exists in addition, under the condition of the gastric acidity (pH 2 ~ 3.5), quickly and a lot of iron is released, along with other factor to promote the efficiency of iron absorption in the food, can achieve higher bioavailability. In addition, the property is stable, can withstand high temperature, itself is not easy to be oxidized, will not accelerate the oxidation of fat, storage unchanged. Iron pyrophosphate is widely used in feed and food additives, flour, biscuits, bread, dry milk powder, rice flour, soy milk powder and other products. It is also used in infant formula food, health food, convenience food and functional fruit juice drinks and other products abroad. Examples of its applications are as follows:

    1) the preparation of a kind of pyrophosphate iron feed additive, it is a kind of load in the porous mineral materials pyrophosphate by iron, by weight percentage meter, pyrophosphate iron content in the porous mineral material is 1 ~ 10%, and its preparation method is used as dispersant, porous mineral materials is chemical synthesis of pyrophosphate load iron particles in porous mineral materials, Made by dry grinding or spray drying. The invention has a narrow particle size distribution, and can better solve the agglomeration problem of ferric pyrophosphate particles. The prepared load type ferric pyrophosphate has the advantages of high bioefficiency, and can be used as feed additive for supplementing iron in livestock, poultry, aquatic animals, etc., and also can be used for supplementing phosphorus in daily diet.

    2) PREPARATION of a coated iron pyrophosphate composition, in which, compared with 100 mass of iron pyrophosphate, the iron pyrophosphate is coated with 0.05-1 mass of enzyme to decompose lecithin and 1-10 mass of polyoxyethylene dehydrated sorbitol fatty acid ester or 1-10 mass glycerol fatty acid ester. The ξ potential of the composition is -25~-39mV. The average particle size is 1-4 μm. The invention also relates to a fermented milk with strengthened iron composition, in which, the fermented milk with absolute value of ξ potential below 10mV contains the coated iron pyrophosphate composition 1.0-10mg per 100g according to the iron conversion from iron pyrophosphate. The coated iron pyrophosphate composition of the invention can be used for yogurt, yogurt beverage, lactic acid bacteria beverage and other fermented milk.

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