A kind of three white skin lightening agent
A technology of whitening agent and Sanbaicao, which is applied in skin care preparations, pharmaceutical formulas, cosmetic preparations, etc., to achieve good inhibitory effect, whitening and brightening effect, and good effect
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Embodiment 1
[0024] A whitening agent, prepared by the following method:
[0025] (1) Weigh the whole herb of Sanbaicao flower, white water lily flower, ginkgo comfrey root, and beautiful egucao according to the mass ratio of 1:10:1:10, wash, dry, and crush through 40 sieves to obtain plant powder;
[0026] (2) Add 70 (V / V)% ethanol aqueous solution to the plant powder, wherein the added amount of the ethanol aqueous solution is 10 times the weight of the plant powder; mix well, stir at room temperature for 3 hours, turn on 200W ultrasonic assisted extraction for 20 minutes , to obtain crude extract;
[0027] (3) Concentrate the crude extract by vacuum rotary evaporation in a water bath at a temperature of 45°C to obtain an extract; The ratio is 60:35:5.
Embodiment 2
[0029] A whitening agent, prepared by the following method:
[0030] (1) Weigh the whole herb of Sanbaicao flower, white water lily flower, ginkgo comfrey root, and beautiful egucao according to the mass ratio of 10:1:10:1, wash, dry, and crush through 40 sieves to obtain plant powder;
[0031] (2) Add 70 (V / V)% ethanol aqueous solution to the plant powder, wherein the added amount of the ethanol aqueous solution is 20 times the weight of the plant powder; mix well, stir at room temperature for 1 hour, turn on 200W ultrasonic assisted extraction for 20 minutes , to obtain crude extract;
[0032] (3) Concentrate the crude extract by vacuum rotary evaporation in a water bath at a temperature of 45°C to obtain an extract; The ratio is 60:35:5.
Embodiment 3
[0034] A whitening agent, prepared by the following method:
[0035] (1) Weigh the whole herb of Sanbaicao flower, white water lily flower, ginkgo comfrey root, and beautiful yugu grass according to the mass ratio of 7:2:3:5, wash, dry, and crush through 40 sieves to obtain plant powder;
[0036] (2) Add 70 (V / V)% ethanol aqueous solution to the plant powder, wherein the added amount of the ethanol aqueous solution is 15 times the weight of the plant powder; mix well, stir at room temperature for 2 hours, turn on 200W ultrasonic assisted extraction for 20 minutes , to obtain crude extract;
[0037] (3) Concentrate the crude extract by vacuum rotary evaporation in a water bath at a temperature of 45°C to obtain an extract; The ratio is 60:35:5.
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