A preparing method of a cassava polysaccharide-iron complex

Abstract

The invention relates to a preparing method of a cassava polysaccharide-iron complex. The method includes subjecting cassava starch to oxidative degradation by utilizing hydrogen peroxide to obtain anapplicable oligosaccharide solution; then adding dropwise an iron trichloride solution and a sodium hydroxide solution into the oligosaccharide solution to perform a complexing reaction to obtain a cassava polysaccharide-iron complex synthesis solution; performing filtration to remove water-insoluble impurities to obtain a cassava polysaccharide-iron complex solution; desalting and concentratingthe solution by adopting an ultrafiltration membrane process; and subjecting a product to spray-drying or vacuum evaporation drying, and crushing to obtain a cassava polysaccharide-iron complex product. The hydrogen peroxide is adopted to perform oxidative degradation on the cassava starch so as to replace previous acid-method or enzyme-method degradation processes, and therefore generation of a side product that is glucose in the method is significantly reduced than that in acid methods, a higher yield of applicable oligosaccharide is obtained, and the degradation time is greatly shortened than that of enzyme methods, thus reducing the production cost. Sodium chloride removal utilizing an ethanol or methanol solvent is replaced, thus avoiding use of flammable and combustible substances such as ethanol or methanol and eliminating hidden safety risks. The prepared cassava polysaccharide-iron complex can be used as an iron supplementing agent for livestock and poultry.

Description

technical field [0001] The invention relates to a synthesis method of a polysaccharide iron complex, in particular to a synthesis process for preparing cassava polysaccharide iron from starch, which belongs to the field of fine chemicals. Background technique [0002] Iron deficiency anemia is a common, worldwide nutritional disease that faces both humans and the animal kingdom. Taking iron supplements is an effective way to solve the problem of iron deficiency anemia. It is a long process for human beings to fight against iron deficiency anemia. The development of iron supplements has gone through three stages. The first generation of iron supplements is an inorganic acid iron salt represented by ferrous sulfate. The second generation of iron supplements The supplement is an organic acid iron salt represented by ferrous citrate, and the third-generation iron supplement is an organic iron complex represented by iron dextran and iron methionine. [0003] Polysaccharides are...

AI Technical Summary

Problems solved by technology

Acid degradation of starch is simple and easy to operate, but it consumes a lot of acid. After the degradation is completed, neutralizing the acid with alkali will produce more salt and increase the cost of subsequent desalination. The bigger defect is This method has poor selectivity for degrading starch, resulting in low yield of the target product - suitable oligosaccharides, and more glucose by-products, which affects the purity of the product; while enzymatic degradation of starch, although its selectivity is much better than the acid method, it is not enough. The disadvantage is that the operation steps of this method are complicated, especially the degradation time is as long as more than 6 hours, the production efficiency is low, and the cost is high

The ethanol or methanol used in the solvent process is a flammable and explosive dangerous chemical, which has hidden dangers in production safety, and methanol is very poisonous to the human body

In addition, in the production process, the amount of ethanol or methanol required is relatively large, the loss of raw materials is also large, and the cost of ethanol or methanol recovery is relatively high.

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