Process for preparing micro-molecular fish scale collagen peptides

Abstract

The invention discloses a process for preparing micro-molecular fish scale collagen peptides and belongs to the technical field of biological extraction. The process comprises the following steps of: 1, pretreating fish scales, and removing impurities and fat on the surfaces of fish scales; 2, extracting fish scale collagen peptides by using a high-temperature sulfuric acid extraction method, wherein the extraction yield is over 95 percent; 3, purifying the extracting solution by adopting the process technology combining centrifugal separation and membrane separation to obtain macro-molecularfish scale collagen peptides of which the purity is over 90 percent; 4, hydrolyzing the macro-molecular fish scale collagen peptides by using protease, and performing enzymic inactivation to obtain the solution of micro-molecular fish scale collagen peptides of which the purity is more than 90 percent and the relative molecular weight is less than 1.5kD; and 5, spray-drying and quickly drying thesolution of collagen peptides to obtain the finished product of micro-molecular fish scale collagen peptides. The micro-molecular fish scale collagen peptides prepared by the process have the advantages of low cost, high yield, high purity and low molecular weight; moreover, in the process, the fish scales discarded in fish processing are fully utilized, and the wastes are changed into the valuables.

Description

technical field

[0001] The invention relates to a preparation process of small molecule fish scale collagen peptide, which belongs to the technical field of biological extraction. Background technique

[0002] Collagen peptides are widely used in food, cosmetics, and health care products industries. In the past, the raw materials for the preparation of collagen peptides mainly came from the bones and skins of terrestrial animals. In recent years, due to the occurrence of mad cow disease, foot-and-mouth disease, bird flu and other epidemics, the source of collagen peptide products is limited. At the same time, considering the safety and cost of raw materials, fish scales, which are waste from fish processing, have become important raw materials for the preparation of collagen peptides.

[0003] Fish scale collagen peptides have been widely studied in Japan, the United States, Norway and other countries in the 1990s. After entering the 21st century, domestic research on the e...

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