Collagenase inhibitor composition, anti-aging face cream, preparation method of anti-aging face cream
A technology of inhibitor and collagenase, which is applied in the field of daily chemicals, can solve the problems of high molecular weight of hydrolyzed collagen and difficulty reaching the dermis, and achieve the effect of mild formula composition and effective efficacy
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Embodiment 1-5
[0073] Dilute the licorice root extract with deionized water to obtain 5 groups of test solutions with different concentrations (final concentrations). The mass concentration of licorice root extract is shown in Table 1 below when performing the collagenase inhibition activity test.
[0074] Inhibition of collagenase activity test
[0075] Folin phenol reagent can be reduced by phenolic compounds to give blue color (molybdenum blue and tungsten blue mixture) under alkaline conditions. Because protein molecules contain phenolic amino acids (such as tyrosine, tryptophan, etc.), Make the protein and its hydrolysate undergo the above reaction, so this principle can be used to determine the protease activity. Usually casein is used as the substrate to react with the enzyme solution under certain pH and temperature conditions. After a period of time, the enzymatic reaction is terminated with trichloroacetic acid. The casein precipitate is removed by centrifugation or filtration and the ...
Embodiment 6-10
[0093] The licorice root extract was dissolved in 5 deionized water corresponding to the volume of Comparative Example 1 to obtain 5 groups of test solutions with different concentrations. When measuring the inhibition mechanism of inhibiting collagenase activity, the mass concentration of licorice root extract is shown in Table 2 below.
[0094] Determination of inhibitory mechanism of licorice root extract in inhibiting collagenase activity
[0095] Add 0.25mL of the test solutions of Comparative Example 1 and Examples 6-10 to 30 test tubes, and add 0.05ml, 0.1ml, 0.15ml, 0.2ml, 0.25ml collagenase (32U / mL), and all add pH 7.4 D-PBS buffer solution to a final volume of 0.5mL, then add 0.5mL (1.0%) of the substrate casein solution and mix it immediately. After incubating in a water bath at 37°C for 10 minutes, add 1mL (6.5%) of trichloroacetic acid solution and mix well. After standing for 10 minutes, centrifuge at 10000 rpm for 5 minutes to obtain the supernatant M of the experim...
Embodiment 11-15
[0109] The licorice root extract was dissolved in 5 deionized water corresponding to the volume of Comparative Example 1 to obtain 5 groups of test solutions with different concentrations. When measuring the inhibition mechanism of inhibiting collagenase activity, the mass concentration of licorice root extract is shown in Table 3 below.
[0110] Determination of inhibition type of licorice root extract on collagenase
[0111] Add 0.5 mL, 0.4 mL, 0.3 mL, 0.2 mL, and 0.1 mL of the substrate casein solution (1.0%) to 30 test tubes, and add Tris HCl buffer with pH 7.4 to a final volume of 0.5 mL, and then separately Add 0.25mL of the test solution of Comparative Example 2 and Examples 11-15, then add collagenase (32U / mL) and mix it immediately. After incubating in a 37°C water bath for 10 minutes, add 1mL (6.5%) of trichloroacetic acid solution and mix it evenly After standing for 10 minutes, centrifuge at 10000 rpm for 5 minutes to obtain the control supernatant m.
[0112] Add 0.5mL...
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