Method for modifying freshwater fish skin collagen by adjusting alkalinity acidity

Abstract

The invention provides a method for modifying freshwater fish skin collagen by adjusting alkalinity acidity, wherein acids or alkali are employed for adjusting the pH of fresh water fish skin collagen aqueous solution to the isoelectric point of collagen, the acids can be hydrochloric acid, acetic acid or citric acid, the concentration being 0.5-1 mol / L, the alkali can be sodium hydroxide, sodium carbonate or potassium hydroxide, the concentration being 0.5-1 mol / L. The method can increase the gelatin strength of the fresh water fish skin collagen by one times, and high safety can be achieved.

Description

technical field

[0001] The invention relates to a method for modifying freshwater fish skin collagen by adjusting pH. Background technique

[0002] Collagen is the main protein component of all connective tissues (skin, tendons, ligaments, cartilage, etc.) in animals. Because collagen has many excellent properties, it has a wide range of uses, and its application fields involve medicine, food, daily cosmetics, photography, etc. Especially the application in medicine and food industry is more eye-catching. In the field of medicine, in addition to surgical dressings, hemostatic sponges, surgical sutures, and hemostatic agents, foreign researchers mainly focus on the preparation of collagen injections that can expand human soft tissues using collagen, collagen-based drug delivery systems, skin , bone, cardiovascular, esophagus, trachea, etc., while domestic research and clinical application are still in their infancy. In the food industry, collagen is mainly used as an emuls...