Colla corii asini low-molecule peptide as well as preparation method and application thereof
A low-molecular-weight peptide and donkey-hide gelatin technology, applied in the field of donkey-hide gelatin preparations, can solve the problems of undetectable traditional Chinese medicine odor, temporary paralysis of taste buds, masking, etc., to avoid indigestion, inhibit bitter taste, and reduce disgust.
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Embodiment 1
[0057] A low-molecular-weight peptide of donkey-hide gelatin, the preparation method of which is:
[0058] (1) Resin pretreatment: first soak 24h with 95% ethanol, remove the particles with poor quality floating on the liquid surface, then, soak 24h with 0.2mol / LHCl and 4% NaOH solution respectively, to remove resin Various organic substances mixed in the synthesis process were finally washed with deionized water until neutral for later use;
[0059] (2) 1000 g of donkey-hide gelatin was added with 7 times the amount of ultra-pure water to melt the gelatin to prepare a donkey-hide gelatin solution;
[0060](3) Adjust the pH of donkey-hide gelatin solution to 8.5, add 0.06% nattokinase by total weight, hydrolyze at 37°C for 3h, and treat at 100°C for 15min;
[0061] (4) Adjust the pH of the donkey-hide gelatin solution after enzymolysis to 4.0, add a total weight of 0.5% Aspergillus niger acid protease, hydrolyze at 33°C for 4 hours, and treat at 100°C for 15 minutes;
[0062...
Embodiment 2
[0066] A low-molecular-weight peptide of donkey-hide gelatin, the preparation method of which is:
[0067] (1) Resin pretreatment: first soak 24h with 95% ethanol, remove the particles with poor quality floating on the liquid surface, then, soak 24h with 0.2mol / LHCl and 4% NaOH solution respectively, to remove resin Various organic substances mixed in the synthesis process were finally washed with deionized water until neutral for later use;
[0068] (2) 1000 g of donkey-hide gelatin was added with 6 times the amount of ultra-pure water to melt the gelatin to prepare a donkey-hide gelatin solution;
[0069] (3) Adjust the pH of donkey-hide gelatin solution to 8.5, add 0.01% nattokinase by total weight, hydrolyze at 37°C for 3h, and treat at 100°C for 15min;
[0070] (4) Adjust the pH of the donkey-hide gelatin solution after enzymolysis to 4.0, add a total weight of 0.6% Aspergillus niger acid protease, hydrolyze at 33°C for 4 hours, and treat at 100°C for 15 minutes;
[007...
Embodiment 3
[0075] A low-molecular-weight peptide of donkey-hide gelatin, the preparation method of which is:
[0076] (1) Resin pretreatment: first soak 24h with 95% ethanol, remove the particles with poor quality floating on the liquid surface, then, soak 24h with 0.2mol / LHCl and 4% NaOH solution respectively, to remove resin Various organic substances mixed in the synthesis process were finally washed with deionized water until neutral for later use;
[0077] (2) 1000 g of donkey-hide gelatin is added with 8 times the amount of ultra-pure water to melt the gelatin to prepare a donkey-hide gelatin solution;
[0078] (3) Adjust the pH of donkey-hide gelatin solution to 8.5, add 0.1% nattokinase by total weight, hydrolyze at 37°C for 3h, and treat at 100°C for 15min;
[0079] (4) Adjust the pH of the donkey-hide gelatin solution after enzymolysis to 4.0, add 0.3% Aspergillus niger acid protease by total weight, hydrolyze at 33°C for 4h, and treat at 100°C for 15min;
[0080] (5) filteri...
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