Food preservatives are a type of food additives that prevent food spoilage due to the action of microorganisms and prolong the shelf life of food. Its anti-corrosion mechanism is mainly to reduce the water activity of the product, reduce the PH of the product, act on the specific structural parts of the microorganism, destroy the growth of the microorganism or the normal progress of the metabolic system, thereby inhibiting the growth of the microorganism and prolonging the shelf life of the product.

Vitamins are one of the important factors affecting the reproductive function of pigs, and pig diets need to contain a certain amount of various vitamins. They promote the synthesis and degradation of major nutrients, thereby controlling the body's metabolism. Vitamin deficiency will affect the synthesis of coenzymes, lead to metabolic disorders, various diseases in animals, and also affect the reproductive function of animals.

Vitamin C is a polyhydroxy compound with the chemical formula C6H8O6. The structure is similar to that of glucose, and the two adjacent enol hydroxyl groups at 2. and 3. Positions in the molecule are easily dissociated to release H, so that it has the property of an acid also known as L-ascorbic acid.

Vitamin B2 is one of the B vitamins, easily soluble in water and stable when heated in neutral or acidic solutions. It is part of the prosthetic group of yellow enzymes in the body (yellow enzymes play the role of hydrogen transfer in biological redox). If it is missing, it affects the biological oxidation of the body and causes metabolic problems. The lesions usually manifest themselves as inflammation of the mouth, eyes and external genitals, such as angular stomatitis, cheilitis, glossitis, conjunctivitis and scrotal inflammation, so this product can be used to prevent and treat the above diseases.

Vitamin C has strong reducibility and is easily oxidized to vitamin C, but its reaction is reversible. Aspartic acid and aspartic acid have the same physiological function, but if aspartic acid is more easily decomposed by water, it will produce ancient diketones. Laconic acid, the reaction is a non rebellious thief, and the physiological effect is completely lost.

Vitamin B2 is a water-soluble vitamin, but slightly water-soluble, with a solubility of 12 mg/100 ml at 27.5 °C. Soluble in sodium chloride solution, slightly soluble in dilute caustic soda, slightly soluble in alkaline solution, stable in strong acid solution. Heat and oxidation resistance. Light and UV radiation lead to irreversible decomposition.

China's feed additive industry is developing rapidly. Trace elements are one of the essential nutrients for animals and have irreplaceable physiological and biochemical effects. Changes in trace elements in animals not only affect the body itself, but also affect the growth, reproduction, metabolism and production of toxins in the body. More and more people are aware of the importance of trace elements, which has led to some problems in the trace element feed additive market. This article will detail these issues and suggest solutions.

L-carnitine is a type of amino acid that promotes the conversion of fat into energy. The pure product is white crystal or white transparent fine powder. It is easily soluble in water, ethanol and methanol, easily soluble in acetone and insoluble in ether, benzene and chloroform. Ethyl acetate. L-carnitine easily absorbs moisture, has good water solubility and water absorption and can withstand high temperatures over 200°C.

The disease of broiler chickens should be detected in time, treated early, diagnosed early, and controlled early, so as to minimize the stress caused by the disease and ensure the healthy growth of broiler chickens.

Feed additives are small amounts of nutritive or non-nutritive substances added to the feed to meet the special needs of animals. The development of modern intensive aquaculture has made feed additives play an increasingly important role in poultry feed processing. Rational use of feed additives can increase feed utilization, prevent diseases, promote healthy growth of poultry, improve product quality, enhance product competitiveness, and create better economic efficiency.

Vitamin B2 is a water-soluble vitamin, but slightly water-soluble, with a solubility of 12 mg/100 ml at 27.5 °C. Soluble in sodium chloride solution, slightly soluble in dilute caustic soda, slightly soluble in alkaline solution, stable in strong acid solution. Heat and oxidation resistance. Light a

Vitamin C is a polyhydroxy compound with the chemical formula C6H8O6. The structure is similar to that of glucose, and the two adjacent enol hydroxyl groups at 2. and 3. Positions in the molecule are easily dissociated to release H, so that it has the property of an acid also known as L-ascorbic aci

Vitamin C has strong reducibility and is easily oxidized to vitamin C, but its reaction is reversible. Aspartic acid and aspartic acid have the same physiological function, but if aspartic acid is more easily decomposed by water, it will produce ancient diketones. Laconic acid, the reaction is a non

Vitamin B2 is one of the B vitamins, easily soluble in water and stable when heated in neutral or acidic solutions. It is part of the prosthetic group of yellow enzymes in the body (yellow enzymes play the role of hydrogen transfer in biological redox). If it is missing, it affects the biological ox

The main function of sodium hexametaphosphate in food is to improve the color, aroma and taste of food, adjust the nutrient composition of food, and extend the shelf life of food. In order to use sodium hexametaphosphate correctly, the quality requirements for sodium hexametaphosphate must be limite

sodium benzoate are broad spectrum antimicrobial agents, but their antimicrobial effectiveness depends on the pH value of the food.As the acidity of the medium increases, its bactericidal and bacteriostatic effects are enhanced, but in alkaline medium bactericidal and bacteriostatic effects are lost

sodium tripolyphosphate is neutralized by phosphoric acid into sodium orthophosphate by soda ash, and then condensed. There are two methods of producing phosphoric acid, wet method and thermal method. The wet method is to react phosphate rock with inorganic acid (usually sulfuric acid, but also hydr

sodium benzoate is an organic substance with the chemical formula C7H5NaO2. It is a white granular or crystalline powder, odorless or slightly benzoine smelling, slightly sweet, with astringent taste. The relative molecular mass is 144,12. It is air stable and easily soluble. Water whose aqueous sol

sodium tripolyphosphate is an inorganic substance with the chemical formula Na5P3O10. It is a kind of amorphous water soluble linear polyphosphate. It is widely used in food as a moisture store, quality enhancer, pH regulator and metal chelating agent. What are the chemical properties of sodium trip

sodium hexametaphosphate is an inorganic substance with the molecular formula (NaPO3)6, a white powder crystal or a colorless transparent glass flake or block solid. Soluble in water, insoluble in organic solvents. It has a strong hygroscopicity, and when exposed to air, it can gradually absorb wate