Preparation method and application of crocodile bone collagen peptide powder
A collagen peptide and bone collagen technology, which is applied in skin care preparations, medical preparations containing active ingredients, applications, etc., can solve the problems of insignificant biological effects, inability to hydrolyze crocodile bone collagen, etc. Good social value and economic value, significant inhibitory effect, significant effect
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Embodiment 1
[0027] Effects of different proteases on the hydrolysis of crocodile bone glue
[0028] Take fresh crocodile bones, remove excess meat and fat, wash, chop into small pieces, add appropriate amount of distilled water, the ratio of the weight of crocodile bones to the volume of water added is 1:3, cook in a pressure cooker (GI54, Zealway, USA) (Pressure about 0.4MPa) After 30 minutes, cool and concentrate to 50% of the total volume of the solution to obtain crocodile bone glue. Get 6 parts of equal amounts of crocodile bone glue, put them into 6 beakers respectively, add 1% neutral protease based on the weight of bone glue in each beaker (the neutral protease from Bacillus subtilis, Zaozhuang Jienuo Bioenzyme Co., Ltd. ), acid protease (acid protease from A. ), compound protease (CN compound protease, Wuxi Jieren Biotechnology Co., Ltd.), and trypsin (Wuxi Jieren Biotechnology Co., Ltd.). The specific enzymatic hydrolysis conditions are shown in Table 1. After 3 hours, heat ...
Embodiment 2
[0038] Embodiment 2: Preparation of crocodile bone collagen peptide powder
[0039] Take fresh crocodile bones, remove excess meat and fat, wash, chop into small pieces, add appropriate amount of distilled water (the weight of crocodile bones to the volume ratio of added water is 1:3) and cook in a pressure cooker (GI54, Zealway, USA) (Pressure about 0.4MPa) After 30 minutes, cool and concentrate to 50% of the total volume of the solution to obtain crocodile bone glue. Add 1.6% papain (Shanghai Sangong) based on the weight of crocodile bone glue, hydrolyze at 55° C. for 4 hours, heat and boil for 10 minutes to inactivate the enzyme. Then centrifuge at 4500 rpm for 15 minutes at room temperature, take the supernatant, and freeze-dry to obtain powdered crocodile collagen peptide.
[0040] The aqueous solution of crocodile collagen peptide powder has a maximum absorption peak at around 220nm after being scanned by full-wavelength ultraviolet light, which is the characteristic ...
Embodiment 3
[0041] Embodiment 3: the antioxidant effect of the crocodile collagen peptide powder of the present application
[0042] 1. The crocodile collagen peptide powder of the present application is effective against DPPH, . Effect of OH scavenging ability and reducing power 1) Effect on DPPH scavenging ability:
[0043] The aqueous solution (0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, 2.0, 2.2mg / mL) of the different concentrations of the crocodile collagen peptide powder prepared in Example 2 of 2mL was placed in a 15mL test tube, and 2mL of 0.1mol / LDPPH solution (prepared with 95% ethanol), mix well, react at room temperature for 30min, meanwhile use 95% ethanol as blank control, measure absorbance value (A) at 517nm wavelength, calculate DPPH . clearance rate. Clearance rate = (A 样品 -A 空白 ) / A 空白 ×100%.
[0044] 2 pairs . Effect of OH scavenging capacity:
[0045] The salicylic acid method was used to determine the scavenging of hydroxyl radicals ( . OH) capability. Add 1mL...
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