Extraction and shred drawing technology of cod collagen

The invention discloses an extraction and shred drawing technology of cod collagen, and relates to the field of high-polymer materials. The extraction and shred drawing technology comprises seven working procedures of pre-treating cod skins; removing impurities; adjusting PH, and performing ultrasonic extraction; performing constant-temperature enzymolysis; performing separation and purification; performing sterilization treatment; and performing shred drawing and shaping. According to the extraction and shred drawing technology disclosed by the invention, multiple technological steps are performed, so that the extraction and the shred drawing and shaping of the collagen are realized; and compared with a conventional liquid collagen product, or a conventional powder collagen product, or a conventional gelatinous collagen product, the collagen obtained by the method disclosed by the invention presents a solid-state 3D spiral structure, and is higher in water locking capacity, easier to preserve, more convenien