Preparation method of radix salviae miltiorrhizae extracts and application thereof to acne removal
A technology of extract and salvia miltiorrhiza, applied in the field of preparation of salvia miltiorrhiza extract, to achieve the effect of controlling the strong secretion of sebum
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Embodiment 1
[0074] 1 kg of Danshen medicinal material was crushed into 10 mesh powder, 20 kg of 80% (weight percentage) ethanol solution adjusted to pH 12 by 10% (w / w) sodium bicarbonate solution was added, and reflux extraction was carried out at 90° C. for 2 hours. After the extract was placed at room temperature, the dregs were removed to obtain the initial extract; then the initial extract was adjusted to a pH value of 6 with 5% (w / w) hydrochloric acid solution, left to stand for 8 hours to remove the precipitate, and then a 3000Da super The filter membrane removes macromolecular substances such as tannin, protein and pectin under the condition of 0.35Mpa, and the obtained ultrafiltrate is the extract of Danshen with anti-acne effect.
Embodiment 2
[0076] 1 kg of Danshen medicinal material was crushed into 80 mesh powder, 15 kg of 50% (weight percent) ethanol solution adjusted to pH 11 by 10% (w / w) sodium hydroxide solution was added, heated and refluxed at 100° C. for extraction twice, 1.5 hours / time, each time with 20kg of 50% (w / w) ethanol solution, the combined extract was placed at room temperature and then centrifuged to remove the medicinal residues to obtain the initial extract; then the initial extract was mixed with 5% (w / w) The pH value of the citric acid solution was adjusted to 6, and the precipitate was removed by centrifugation after standing for 8 hours. The centrifuged liquid passed through a 5000 Da ultrafiltration membrane, and the obtained ultrafiltrate was the Danshen extract with acne-removing effect.
Embodiment 3
[0078] 1 kg of Danshen medicinal material is crushed into 120 mesh powder, 10 kg of 80% (weight percentage) ethanol solution is added, and after stirring at room temperature for 24 hours, the dregs are separated and removed, and the dregs are added to adjust the pH value through 5% (w / w) sodium hydroxide solution 10kg of 50% (w / w) ethanol solution to 13, centrifuged to remove medicinal residues after heating and stirring for 1 hour at 80°C, combined two extracts to obtain the initial extract; then the initial extract was treated with 1% (w / w) ) citric acid solution to adjust the pH value to 7, and centrifuge to remove the precipitate after standing for 24 hours. The centrifugate passes through a 10000Da ultrafiltration membrane, and the obtained ultrafiltrate is the Danshen extract with acne-removing effect.
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