Plant extract composition with skin whitening effect, preparation method and application
A plant extract and composition technology, which is applied in the fields of skin whitening cosmetics and plant extract compositions to achieve the effects of accelerating melanin metabolism, promoting skin whitening, and whitening skin barrier
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Embodiment 1
[0040] Measure 1 g of Sophora flavescens, 34 g of bamboo leaves, 34 g of Acanthopanax fruit, and 31 g of Lycium barbarum, soak and extract once at 30°C with 20 times the amount [solution volume (ml): medicinal material weight (g)] of 80% ethanol aqueous solution, Soak for 2 hours each time to prepare an ethanol extract;
[0041] The ethanol extract was filtered and concentrated 10 times, purified with a macroporous adsorption resin, eluted with 95% ethanol aqueous solution, and collected the eluate after elution;
[0042] After the eluent is concentrated 10 times, add 3 times the volume of 1,3-butanediol, stir evenly, let stand for 24 hours, and collect the supernatant;
[0043] The supernatant is centrifuged to obtain the centrifuged supernatant, which contains the active ingredient required in the formula of the present invention, that is, the plant extract composition with whitening effect.
Embodiment 2
[0045] Measure 33g of Sophora flavescens, 34g of bamboo leaves, 32g of Acanthopanax fruit and 31g of Lycium barbarum, soak and extract 2 times at 40°C with 10 times the amount [solution volume (ml): medicinal material weight (g)] containing 10% ethanol aqueous solution, Soak for 48 hours each time to prepare an ethanol extract;
[0046] The ethanol extract was filtered and concentrated 50 times, purified with a macroporous adsorption resin, eluted with 75% ethanol aqueous solution, and collected the eluate after elution;
[0047]After the eluate is concentrated 15 times, add 0.5 times the volume of 1,3-butanediol, stir evenly, let stand for 36 hours, and collect the supernatant;
[0048] The supernatant is centrifuged to obtain the centrifuged supernatant, which contains the active ingredient required in the formula of the present invention, that is, the plant extract composition with whitening effect.
Embodiment 3
[0050] Measure 34 g of Sophora flavescens, 1 g of bamboo leaves, 33 g of Acanthopanax fruit and 32 g of Lycium barbarum, soak and extract 3 times at 50 °C with 5 times the amount [solution volume (ml): medicinal material weight (g)] containing 50% ethanol aqueous solution, Soak for 24 hours each time to prepare an ethanol extract;
[0051] The ethanol extract was filtered and concentrated 30 times, purified with a macroporous adsorption resin, eluted with 10% ethanol aqueous solution, and the eluate was collected after elution;
[0052] After the eluate is concentrated 13 times, add 1 times the volume of 1,3-butanediol, stir evenly, let stand for 12 hours, and collect the supernatant;
[0053] The supernatant is centrifuged to obtain the centrifuged supernatant, which contains the active ingredient required in the formula of the present invention, that is, the plant extract composition with whitening effect.
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