A kind of anti-aging whitening isolation cream and preparation method thereof
A barrier cream and anti-aging technology, applied in pharmaceutical formulations, cosmetic preparations, cosmetic preparations, etc., can solve the problems of single barrier cream effect and worsening skin problems, reduce pigmentation, improve metabolic status, and protect activity. Effect
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Embodiment 1
[0037] The preparation of embodiment 1 dandelion extract
[0038] Take dandelion, wash and dry, crush, pass through a 60-mesh sieve, add 12 times the mass of ethanol with a volume fraction of 85% to extract twice, each time for 1 hour, filter, combine the filtrates, distill off the ethanol under reduced pressure, and concentrate under reduced pressure to Concentrate with a density of 1.0 at 60°C, centrifuge the concentrate at 1200r / min for 15min, take the supernatant and perform ultrafiltration with a polysulfone membrane with a molecular weight cut-off of 20,000, and concentrate the ultrafiltrate under reduced pressure to a relative density of 1.20 at 60°C , spray-dried to obtain dandelion extract.
Embodiment 2
[0039] The preparation of embodiment 2 Tibetan forest grass extract
[0040] Take Tibetan forest grass, wash and dry, crush, pass through a 60-mesh sieve, add 15 times the mass of water, heat and reflux to extract twice, each time for 2 hours, filter, combine filtrates, and concentrate under reduced pressure to a density of 1.0 at 60°C The concentrated solution is centrifuged at 1200r / min for 15min, and the supernatant is ultrafiltered with a polysulfone membrane with a molecular weight cut-off of 20,000. The ultrafiltrate is concentrated under reduced pressure to a relative density of 1.20 at 60°C, and spray-dried to obtain Canglin grass extract.
Embodiment 3 4
[0041] The preparation of embodiment 3 Sijiqingye extract
[0042] Take Sijiqing leaves, wash and dry, crush, pass through a 60-mesh sieve, add water 16 times its weight, heat and reflux to extract twice, each time for 2 hours, filter, combine the filtrates, and concentrate the filtrates under reduced pressure to 60 ° C. The relative density is The concentrated solution of 1.0 was centrifuged at 1200r / min for 15min, and the supernatant was subjected to ultrafiltration with a polysulfone membrane with a molecular weight cut-off of 20,000. Green extract.
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