Medicinal composition for treating skin injury and ulcer and application thereof
A composition and drug technology, applied in skin diseases, drug combinations, metabolic diseases, etc., can solve the problems of slow onset, limited clinical promotion and application, and long course of disease, so as to accelerate regeneration, promote wound healing and tissue repair, The effect of promoting blood circulation
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Embodiment 1
[0025] Take the newly slaughtered beef Achilles tendon, soak it with 2mol / L hydrochloric acid for 48 hours at room temperature, take it out, wash it with distilled water, neutralize it with 0.5mol / L sodium hydroxide solution, and then soak it in 0.1% pepsin at 20°C Put it in the solution for 12 hours, take it out, wash it with water, cut it into small pieces of 0.05-0.5 cm, pickle and enzymatically hydrolyze once under the same conditions as above, and dry it at 60°C-70°C to obtain collagen.
Embodiment 2
[0027] Take fresh pigskin, wash, remove hair and fat, cut into small pieces, add 50 times the amount of 0.45mol / L sodium chloride-trishydroxymethylaminomethane-hydrochloric acid buffer solution (pH7.5), the condition of 4 ℃ Freeze for 48 hours, stir once every 8 hours, 5 minutes each time, centrifuge (3000r / min) for 15 minutes, take the supernatant and store it at 4°C, repeat the above operation for the precipitate, and take the supernatant and store it at 4°C. Combine the obtained supernatants, add glacial acetic acid under the condition of stirring, make the solution contain 0.5mol / L of glacial acetic acid, pH2.5~3, then add sodium chloride under the condition of stirring, make the whole solution contain 1mol of sodium chloride / L, stirred at 60r / min for 12 hours at 4°C, centrifuged, discarded the supernatant, collected the precipitate, added 50 times of 0.5mol / L glacial acetic acid solution to dissolve, centrifuged, collected the supernatant , add the calculated amount of 0...
Embodiment 3
[0029] Take fresh pigskin, wash, remove hair and fat, grind it, add water at a concentration of 60g / L, transfer it into a fermenter, stir, heat up to 90°C, keep it for 5 minutes, then cool down to 37°C, add 1% pepsin enzyme Decompose for 2 hours, heat up to 60°C, add 2% trypsin for 12 hours, heat up to 90°C, inactivate for 5 minutes, pass through a 10kD ultrafiltration membrane, and spray dry to obtain collagen with a molecular weight of less than 40kD.
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