New application of kaempferol extractive and sunscreen cosmetic containing kaempferol extractive
A technology of cosmetics and extracts, which is applied in the field of traditional Chinese medicine and cosmetics, can solve the problems of no sun protection effect, etc., and achieve the effects of not being prone to allergic reactions, high absorption strength, and high sun protection index
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Embodiment 1
[0039] Grind the medicinal material of kaempferia, take 100g, heat and reflux with petroleum ether (60°C-90°C) to extract once, the temperature is 60°C, the amount of solvent used is 500ml, filter to obtain 490ml of filtrate, concentrate the filtrate under reduced pressure at 50°C to obtain kaempferia extract , which is yellow oily extract 5.2g.
[0040] The average ultraviolet absorption rate measured by the dilution transmittance method is 95.8%.
Embodiment 2
[0042]Grind the medicinal material of kaempferia, take 100g, heat and reflux with petroleum ether (60°C-90°C) to extract twice, the temperature is 75°C, and the solvent dosage is 500ml each time, filter to obtain 975ml of filtrate, concentrate the filtrate under reduced pressure at 50°C to obtain kaempferia The extract is 6.5g of yellow oily extract.
[0043] The average ultraviolet absorption rate is 96.2% as measured by the dilution transmittance method.
Embodiment 3
[0045] Grind the medicinal material of kaempferia, take 100g, heat and reflux with chloroform to extract twice, the temperature is 56°C, the solvent dosage is 300ml each time, filter to obtain 585ml of filtrate, concentrate the filtrate under reduced pressure at 45°C, and obtain the kaempferia extract, which is a yellow oily infusion. Cream 6.8g.
[0046] The average ultraviolet absorption rate is 96.4% as measured by the dilution transmittance method.
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