Polypeptide lyophilized powder and application thereof in preparing anti-aging cosmetics
A technology of freeze-dried powder and cosmetics, applied in the field of skin care products, can solve the problems of insufficient collagen biosynthesis and aging, and achieve good solubility, increase production, and obvious effects
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Embodiment 1
[0046] An experimental model of collagen biosynthesis was established using human skin fibroblasts. The cells were treated with each group of polypeptide freeze-dried powders prepared in Example 1, and then the content of collagen secreted by the cells was detected by enzyme-linked immunosorbent assay to measure the effect of the added substances. The fibroblast experimental model is as follows:
[0047] Fibroblasts are the main cell components of loose connective tissue, with vigorous functional activities, large cells and nuclei, clear outlines, large and obvious nucleoli, weakly basophilic cytoplasm, and obvious protein synthesis and secretion activities.
[0048] The fibroblast cell line was established by the conventional cell culture method, and the 3rd to 6th passage cells were selected for the experimental model experiment. The culture conditions are (complete medium: DMEM (containing 2mM L-glutamine)+10% newborn calf serum (NCS)), temperature 37.0°C, CO 2 Content 5%...
Embodiment 2
[0055] Example 2 Preparation and efficacy verification of freeze-dried powder and matching lotion
[0056] 1. Preparation of freeze-dried powder
[0057] Prepare freeze-dried powder and matching lotion according to the process for human body efficacy experiments. The combination ratio of peptides in the three groups is tripeptide-1:tripeptide-2=9:1 / 5:5 / 1:9, the percentage of the total combination 0.3%:
[0058] Table 2 each component mass fraction (%)
[0059]
[0060] Preparation Process
[0061] ① Add glycine, trehalose, mannitol, and serum albumin into the container, dissolve in deionized water, adjust the pH to 6.5 with sodium dihydrogen phosphate and disodium hydrogen phosphate;
[0062] ②Premix polysorbate-20 and peptide components until uniform, and add to the main container under stirring until uniform;
[0063] ③ Sterilize by ultraviolet irradiation for 30 minutes, filter and pack with 0.22 μm filter membrane;
[0064] ④Pre-freeze overnight in a refrigerator a...
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