Fishbone bioactive polypeptide calcium powder and preparation method

Abstract

The invention discloses fishbone bioactive polypeptide calcium powder and a preparation method, belonging to the field of functional food or food additives. The preparation method comprises the following steps: freezing fishbone, coarse grinding, fine grinding, adding water, stirring, adding a compound protease to hydrolyze, centrifugating, and respectively collecting the supernatant and the precipitate; ultrafiltering the supernatant by a filter membrane, concentrating the filtrate, and freeze-drying to obtain the fishbone protein polypeptide powder; washing the precipitate, drying and pulverizing; activating by using citric acid, and drying to obtain the soluble calcium; and mixing the fishbone protein polypeptide powder and the soluble calcium to obtain the fishbone bioactive polypeptide calcium powder. The fishbone bioactive polypeptide calcium powder enables the biological absorptivity of calcium to reach above 65%, and meanwhile, maintains the functional characteristics of polypeptide. Hydrolysis is carried out by using the food-grade protease, and thus, the fishbone bioactive polypeptide calcium powder has the advantages of high safety and no side effect. The method of the invention has the advantages of simple and feasible realization, and low cost. The fishbone bioactive polypeptide calcium powder can be used as a food additive or directly eaten as nutritional food.

Description

technical field The invention belongs to the field of functional food or food additives, and in particular relates to a fish bone bioactive polypeptide calcium powder and a preparation method thereof. Background technique Fish bones contain various nutrients, mainly protein and mineral salts, 80% of which are collagen and chondroitin, which can strengthen the metabolism of cortical cells and prevent aging. Fish bones contain all the amino acids that make up human protein. The mineral content in fish bones is significantly higher than that of other foods. It also contains a lot of calcium salts, biologically active substances and various vitamins. The ratio of calcium to phosphorus in bones is approximately 2:1. Optimal ratio of calcium to phosphorus for absorption. Fish bones account for 5-15% of the fish body weight, but most of the fish bones have not been well utilized at present, and their value has not been reflected. Therefore, the comprehensive utilization of fish bo...

AI Technical Summary

Problems solved by technology

Although there have been some research reports on the processing and utilization of fish bones and product development, there are still few reports on the research on the bones of large freshwater fish, especially black snakehead, grass carp, and carp.

There are no reports of substances such as fish bone bioactive polypeptide calcium powder produced by bioenzyme hydrolysis combined with ionization technology