Applications of Ferric Pyrophosphate_Industrial Additives

Overview^[1-2]

Iron is an essential trace element for animals. It is an essential component of hemoglobin and myoglobin and interacts with cytochrome enzyme, peroxidase, catalase, acetyl-CoA, and succinate dehydrogenase. , amino silicone oil emulsion xanthine oxidase activity is closely related. Iron participates in the normal transportation of oxygen within the body’s tissues, directly affects the body’s ability and protein metabolism, and also affects the immune function and reproductive performance of the animal body. Ferric pyrophosphate is a yellow-white to yellow-brown crystalline powder with a slight iron odor. Ferric pyrophosphate is an iron nutritional supplement used in milk powder, baby food and general food; it can also be used as a catalyst; as an anti-corrosion pigment.

Structure

Preparation^[2]

A method for producing iron pyrophosphate that improves whiteness and processing performance. The method emulsifies ordinary iron pyrophosphate through microencapsulation technology, and specifically includes the following steps: (1) Ultrafinely pulverized ordinary iron pyrophosphate Ferric phosphate or ordinary undried ferric pyrophosphate wet material is mixed with glyceryl monostearate and calcium carbonate to form a suspension above 80°C, and is emulsified by high-speed shearing and homogenization to obtain a mixed emulsion; (2) The emulsion is spray-dried with an inlet air temperature of 160-190°C and an outlet air temperature of 80-95°C. The spray-dried powder is screened to obtain the target product.

Apply^[3-4]

Iron pyrophosphate has a lighter color and no iron odor, causing no adverse color changes and limited flavor changes to food carriers. It is highly safe, has little gastrointestinal irritation, and has no adverse reactions or side effects. In 1994, the U.S. Food and Drug Administration listed it on the GRAS (Generally Recognized as Safe) list of substances. The bioavailability is high, similar to water-soluble ferrous gluconate. This is mainly due to the fact that ferric pyrophosphate has an additional mineral absorption mechanism. Under the acidic conditions of the stomach (pH 2 to 3.5), iron can be released quickly and in large quantities. , combined with the effects of other synergistic factors in food that promote iron absorption, can achieve higher bioavailability. In addition, it is stable in nature, can withstand high temperatures, is not easily oxidized, will not accelerate fat oxidation, and remains unchanged during storage. Ferric pyrophosphate has a wide range of applications and is mainly used in feed and food additives. It is suitable for flour, biscuits, bread, dry mixed milk powder, rice flour, soy milk powder and other products. It is also used in infant formula foods, health foods, and convenience foods abroad. and functional fruit drinks and other products. Examples of its application are as follows:

1) Prepare an iron pyrophosphate feed additive, which is an iron pyrophosphate salt loaded on a porous mineral material. The content of the iron pyrophosphate salt in the porous mineral material is 1~10% by weight. , its preparation method is to use porous mineral materials as dispersants, load iron pyrophosphate particles synthesized by chemical methods on porous mineral materials, and then dry and crush or spray dry them. The invention has a narrow particle size distribution and better solves the problem of agglomeration of iron pyrophosphate particles. The prepared loaded iron pyrophosphate has the advantage of high bioavailability and can be used as a feed additive for livestock, poultry and aquatic products. Iron supplementation for animals, etc. can also be used to supplement phosphorus in the diet.

2) Prepare a coated iron pyrophosphate composition, in which, relative to 100 parts by mass of iron pyrophosphate, the iron pyrophosphate is decomposed by 0.05 to 1 mass parts of enzyme lecithin and 1 to 10 mass parts of polyoxygen Coated with ethylene sorbitan fatty acid ester or 1 to 10 parts by mass of glycerol fatty acid ester, the composition has a ξ potential of -25 to -39 mV and an average particle size of 1 to 4 μm. The present invention also relates to fermented milk fortified with an iron component, wherein 100 g of fermented milk with an absolute value of ξ potential of 10 mv or less contains 1.0-10 mg of the coated iron pyrophosphate composition in terms of iron derived from iron pyrophosphate. . The coated ferric pyrophosphate composition of the present invention can be used for fermented milk such as yogurt, yogurt drinks, and lactic acid bacteria drinks.