A method for enzymatically preparing metal chelating peptides

Abstract

The invention provides a method for preparing a metal chelated peptide by an enzyme method. The method comprises the steps of carrying out enzymolysis on raw materials, namely marine-sourced fish skin and fish scale protein, by adopting a complex of protamex and flavorzyme, separating to purify, and carrying out freeze drying, thereby obtaining the metal chelated peptide. The amino acid sequence of the peptide is vgpsgpa. According to the method, amino acids and small peptides play a role in promoting zinc absorption, and the amino acids or metal complexes of the peptide, e.g. Fe and Zn, have higher biological utilization ratio than that of inorganic salts and are free from toxic and side effects, so that the method has a very important significance in the research and development of biological-state zinc-protein hydrolysate chelated zinc.

Description

technical field [0001] The invention relates to a metal (Ca, Fe, Zn) chelating peptide, more specifically to a method for enzymatically preparing the metal chelating peptide, which belongs to the field of biotechnology. Background technique [0002] Bioactive peptides derived from marine protein have extremely high nutritional value, food safety and physiological health functions, and play an important role in promoting the growth, development and disease prevention of the body, and can be used as functional food or food additives and even medicines applied to people's daily life. [0003] Calcium deficiency is a global nutritional problem. Because our people mainly eat plant-based diets, the phenomenon of calcium deficiency is even more serious. Therefore, calcium supplementation has become an important topic in the study of dietary nutrition in our country. Traditional inorganic calcium salts, such as calcium carbonate, calcium phosphate, calcium chloride, etc., have a ce...

AI Technical Summary

Problems solved by technology

[0005] Although zinc sources are very abundant in nature, the absorption and metabolism of zinc in the human body is restricted by various factors. Zinc deficiency has become a public health problem in my country and many developing countries.

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