Preparation method of fish scale keratin
A technology of keratin and fish scales, which is applied in the preparation method of peptides, chemical instruments and methods, animal/human proteins, etc., can solve the problem of low added value, lack of means of resource utilization, and insufficient utilization of nutritional functional substances of fish scales, etc. problem, achieve high hydrolysis rate, high content and purity, and good quality
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Embodiment 1
[0039] After washing 1 part by weight of fish scales, it is added to 8 parts by weight of a hydrochloric acid solution with a mass concentration of 3%, stirred at 250 r / min for 2 hours at room temperature, and rinsed with deionized water to neutrality to obtain delimed scales; Add 1 part of delimed fish scales to 6 parts by weight of deionized water, heat to 100°C and keep for 1h; continue to add 1 part by weight of delimed fish scales, continue to keep at 100°C and keep for 2h to obtain a collagen solution with solid residue Centrifugal separation to obtain a solid residue, after adding 3 parts by weight of water to 1 part by weight of the solid residue, adding a composite protease with a total weight of 3‰ of the solid residue and water, and hydrolyzing at 55° C. for 2 hours to obtain crude fish scale keratin; The crude fish scale keratin product was added with 0.5% activated carbon of the crude fish scale keratin quality, adsorbed at 60°C for 40 minutes, decolorized and deodo...
Embodiment 2
[0042] After washing 2 parts by weight of fish scales, add it to 10 parts by weight of 5% hydrochloric acid solution, stirring at 300r / min for 1 hour at room temperature, and washing with deionized water to neutrality to obtain deliming fish scales; Add 1 part of delimed fish scales to 8 parts by weight of deionized water, heat to 100°C and keep for 1h; continue to add 1 part by weight of delimed fish scales, keep at 100°C and keep for 1h to obtain a collagen solution with solid residue ; Continue to add 1 part by weight of delimed fish scales, continue to keep at 100°C and keep for 2 hours to obtain a collagen solution with solid residue; centrifuge to obtain a solid residue, add 3 parts by weight of water to 1 part by weight of solid residue, Add a composite protease with a total weight of 1.5‰ of solid residue and water, hydrolyze it at 50℃ for 4h to obtain crude fish scale keratin; add 1% active carbon of crude fish scale keratin to the crude fish scale keratin, and absorb a...
Embodiment 3
[0045] After washing 2 parts by weight of fish scales, add 9 parts by weight of a hydrochloric acid solution with a mass concentration of 4%, stirring at 250 r / min for 2 hours at room temperature, and washing with deionized water to neutrality to obtain deliming fish scales; Add 1 part of delimed fish scales to 8 parts by weight of deionized water, heat to 100°C and keep for 2h; continue to add 1 part by weight of delimed fish scales, continue to keep at 100°C and keep for 1h to obtain a collagen solution with solid residue ; Continue to add 1 part by weight of deliming fish scales, continue to keep at 100°C and keep for 2 hours to obtain a collagen solution with solid residue; centrifuge to obtain solid residue, add 5 parts by weight of water to 1 part by weight of solid residue, Add a compound protease with a total weight of 2.5‰ of solid residue and water and hydrolyze it at 55℃ for 3h to obtain crude fish scale keratin; add 0.8% active carbon of crude fish scale keratin to t...
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