A black fruit wolfberry moisturizing whitening cream and preparation method thereof
The technology of black fruit wolfberry and white face is applied in the field of black fruit wolfberry moisturizing and whitening cream and its preparation, which can solve the problems of slow skin metabolism, unbalanced oil-water secretion, collagen loss, etc., and achieves absorption of ultraviolet rays, rich moisturizing feeling, and awakening the skin. The effect of vitality
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[0031] The preparation method of the yeast extract is as follows: wash the beer yeast in water at 0-4°C to remove impurities, debitterize, and then perform coarse filtration to obtain a yeast slurry containing solids, and then add accelerators, plasmolytic agents and NaOH , adjust the pH to 6.0-7.0, autolyze and extract at 52°C±2°C for 2-2.5 hours, then boil, inactivate the enzyme, cool and stand, centrifuge, remove cell wall fragments, and concentrate under reduced pressure to a concentration of 10g / mL to obtain the yeast extract.
[0032] The preparation method of the seaweed extract is as follows: the seaweed after removing impurities is washed and minced with a dilute acid solution with a pH of 2 to 4, ground and homogenized in a dilute acid solution with a pH of 2 to 4, and then homogenized The pulped seaweed is matured and sterilized at a temperature of 121-135°C and a pressure of 1-5 MPa for 0.5-2 hours, the degraded seaweed pulp is adjusted to pH 5.0-7.0 by adding alk...
Embodiment 8
[0047] Stability detection of embodiment 5 product of the present invention:
[0048] 1. The pH value is 6.4.
[0049] 2. For heat resistance test, put the packaged sample in a thermostat (40±1)°C for 24 hours, and there will be no oil-water separation after returning to room temperature.
[0050] 3. For the cold resistance test, put the packaged samples in the refrigerator at -5~-10°C for 24 hours. After returning to room temperature, there will be no delamination, thickening and discoloration.
[0051] 4. Centrifuge test, put the packaged sample in a centrifuge at 2000 rpm, centrifuge for 30 minutes, no oil-water separation phenomenon.
[0052] It can be seen that the face cream prepared in Example 5 of the present invention has good stability.
Embodiment 9
[0053] Embodiment 9 Clinical experiment and result of the present invention
[0054] Experimental objects: 40 volunteers aged 32-48 were selected and randomly divided into two groups, the test group and the control group, 20 people in each group.
[0055] Experimental method: the trial subjects in the test group clean their faces every night before going to bed, and then apply the face cream prepared in Example 5 evenly on their faces. The test period is one month. The test subjects in the control group cleaned their faces every night before going to bed, and then evenly applied the face cream prepared in Example 1 to their faces. The test period was one month. Trial results are counted every 7 days, 15 days, and 30 days.
[0056] Evaluation criteria: effective means that the skin is moist and shiny, white and elastic, the spots are obviously lightened, and fine lines are also improved; invalid means that the skin texture has not changed from before the experiment; generally ...
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