Method for extracting collagen polypeptide from tortoise shells and application of collagen polypeptide in preparation of sleeping mask
A collagen peptide, sleep mask technology, applied in skin care preparations, pharmaceutical formulations, cosmetic preparations, etc.
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Embodiment 1
[0041] A method for extracting tortoise shell collagen polypeptide through secondary fermentation, comprising the following steps in sequence:
[0042] (1) Boiling and extracting
[0043] Take tortoise shell (blood plate) 1Kg, water extraction three times, concrete operation is as follows:
[0044] Add 5Kg deionized water for the first time, heat to a slight boil and keep for 24h, collect the filtrate;
[0045] Add 3Kg deionized water for the second time, heat to slightly boil and keep for 24h, collect the filtrate;
[0046] Add 2Kg deionized water for the third time, heat to a slight boil and keep for 24h, and collect the filtrate.
[0047] The above three filtrates were combined, concentrated to 1Kg in a boiling water bath, and the concentrated solution was left to stand for use.
[0048] (2) Pepsin hydrolysis
[0049] Take 1Kg of the concentrated solution obtained in step (1), adjust the pH value to 1.8 with 1mol / L HCl, then add 20g of pepsin, and perform enzymatic hydr...
Embodiment 2
[0056] A method for extracting tortoise shell collagen polypeptide through secondary fermentation, comprising the following steps in sequence:
[0057] (1) Boiling and extracting
[0058] Take tortoise shell (blood plate) 1Kg, water extraction three times, concrete operation is as follows:
[0059] Add 4Kg deionized water for the first time, heat to slightly boil and keep for 20h, collect the filtrate;
[0060]Add 3Kg deionized water for the second time, heat to slightly boil and keep for 20h, collect the filtrate;
[0061] Add 3Kg of deionized water for the third time, heat to slightly boil and keep for 20h, and collect the filtrate.
[0062] The above three filtrates were combined, concentrated to 1Kg in a boiling water bath, and the concentrated solution was left to stand for use.
[0063] (2) Pepsin hydrolysis
[0064] Take 1 Kg of the concentrated solution obtained in step (1), adjust the pH value to 2.5 with 1 mol / L HCl, then add 50 g of pepsin, and perform enzymatic...
Embodiment 3
[0071] A method for extracting tortoise shell collagen polypeptide through secondary fermentation, comprising the following steps in sequence:
[0072] (1) Boiling and extracting
[0073] Take tortoise shell (blood plate) 1Kg, water extraction three times, concrete operation is as follows:
[0074] Add 4Kg deionized water for the first time, heat to a slight boil and keep for 18h, collect the filtrate;
[0075] Add 4Kg deionized water for the second time, heat to slightly boil and keep for 18h, collect the filtrate;
[0076] Add 4Kg deionized water for the third time, heat to slightly boil and keep for 18h, and collect the filtrate.
[0077] The above three filtrates were combined, concentrated to 1Kg in a boiling water bath, and the concentrated solution was left to stand for use.
[0078] (2) Pepsin hydrolysis
[0079] Take 1Kg of the concentrated solution obtained in step (1), adjust the pH value to 2 with 1mol / L HCl, then add 65g of pepsin, and perform enzymatic hydrol...
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