Composition with anti-aging and moisturizing effects as well as preparation method and application thereof
A composition and anti-aging technology, applied in medical preparations containing active ingredients, skin care preparations, pharmaceutical formulations, etc.
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preparation example Construction
[0036] A preparation method of an anti-aging moisturizing composition is as follows:
[0037] 1) Add 3 parts of glycerin and 1 part of water to the active liposome in proportion, homogenize for 2 minutes, and homogenize at a speed of 6000-8000 rpm, keep warm for later use;
[0038] 2) Add 0.08 parts of sodium acrylate / sodium acryloyldimethyltaurate copolymer and 4 parts of water to the hyaluronic acid microcapsules in proportion, mix well and set aside;
[0039] 3) Slowly add the material obtained in 1) into the material obtained in 2) while stirring, mix evenly, homogenize the obtained material for 1 minute with a high-pressure homogenizer, and filter with a 1 μm filter to obtain a composition, all in parts by weight.
[0040] The preparation of the hyaluronic acid microcapsules comprises the following steps:
[0041] 1) Add 0.6 parts of hyaluronic acid derivatives to 25 parts of water and stir evenly to obtain the first component, keep it warm for later use;
[0042] 2) Ad...
experiment example 1
[0058] Experimental example 1. Cytotoxicity evaluation test: to detect the safety of the composition
[0059] MTT assay is an experimental method widely used in the detection of cytotoxicity or cell proliferation by measuring the number of living cells. The detection principle is that succinate dehydrogenase in the mitochondria of living cells can make the water-soluble yellow salt MTT (3- (4,5-dimethylthiazole-2)-2,5-diphenyltetrazolium bromide) is reduced to water-insoluble blue formazan and deposited in cells, while dead cells have no such function. The generated crystalline formazan is generally added to DMSO (dimethyl sulfoxide), and the absorbance is measured after dissolution. The specific experimental method is in a 96-well plate according to 1X10 4 Inoculate 100 μl of DMEM medium containing 10% bovine serum and 100 μl of keratinocytes (HaCaT) at a density of one per well, and replace with serum-free medium after 24 hours of culture. Different concentrations of the c...
experiment example 2
[0066] Experimental Example 2. Hyaluronidase Inhibition Experiment
[0067] Compositions 1-7 and Comparative Examples 1-3 were formulated into 1% aqueous solutions as sample liquids. Add 0.1mL 0.25mmol / L CaCl to the test tube 2 Solution and 0.5mL hyaluronidase solution, incubated at 37°C for 20min; added 0.5mL sample solution, incubated at 37°C for 20min; added 0.5mL sodium hyaluronate solution, incubated at 37°C for 30min; mol / L NAOH solution 0.1ml and acetylacetone solution 0.5ml, heat reaction in boiling water bath for 15min, then ice-bath for 5min; then add 1.0mL Ehrlich reagent and dilute with 3.0mL absolute ethanol, stand for 20min for color development , measure its absorbance value, and substitute it into the following formula to calculate the inhibition rate.
[0068] Hyaluronidase inhibition rate (%)=[(A-B)-(C-D)] / (A-B)*100%
[0069] In the formula: A is the absorbance value of the control solution (replace the sample solution with acetic acid buffer solution); B ...
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