Camellia extract as well as preparation method and application thereof, and cosmetic containing camellia extract
A technology of camellia flower and extract is applied in the field of camellia flower extract, its preparation method and application, and the field of cosmetics containing the same, which can solve the problems of low extraction rate, low activity of the extract, low content of active ingredients in the extract, etc., and achieves anti-oxidation Strong activity, good for skin absorption
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[0049] According to one aspect of the present invention, a kind of preparation method of camellia extract, described preparation method comprises the following steps:
[0050] Ultrasonic extraction of camellia, and then reacting the extract with a metal ion complexing agent to obtain a precipitate A; then sequentially trans-solubilizing and extracting the precipitate A to obtain a camellia extract;
[0051] The ultrasonic extraction solvent includes ethanol and ammonium sulfate.
[0052]The preparation method of the camellia extract provided by the present invention, the preparation method first ultrasonically extracts the camellia, and then reacts the extract with a metal ion complexing agent to obtain a precipitate A; then the precipitate A is sequentially transferred and extracted, Camellia flower extract is obtained; the ultrasonic extraction solvent includes ethanol and ammonium sulfate. The above-mentioned preparation method first uses ethanol and ammonium sulfate as ul...
Embodiment 1
[0107] A kind of preparation method of camellia extract, described preparation method comprises the following steps:
[0108] (1) Crush the camellia into a 20-mesh sieve powder, add the extraction solvent according to the ratio of material to liquid of 1:30, and extract with ultrasound for 20 minutes under the conditions of ultrasonic power of 75kHZ and extraction temperature of 25°C, and then centrifuge at 4400rmp for 10min , extract the upper ethanol phase solution to obtain the extract;
[0109] In percent by volume, the extraction solvent includes 40% of absolute ethanol and 60% of ammonium sulfate aqueous solution;
[0110] The concentration of the ammonium sulfate aqueous solution is 0.28g / L;
[0111] (2), the content of tea polyphenols in the extract obtained in step (1) was detected by Folin’s phenol method to 4.003mg / mL, then aluminum chloride was added to the extract and mixed evenly and allowed to stand for 15min, then the extract Centrifuge at 4400rmp for 10min t...
Embodiment 2
[0117] A kind of preparation method of camellia extract, described preparation method comprises the following steps:
[0118] (1) Crush the camellia into a powder passing through a 200-mesh sieve, add an extraction solvent at a material-to-liquid ratio of 1:30, and conduct ultrasonic extraction for 30 minutes at an ultrasonic power of 80kHZ and an extraction temperature of 35°C, followed by centrifugation at 4400rmp for 10 minutes , extract the upper ethanol phase solution to obtain the extract;
[0119] In percent by volume, the extraction solvent includes 50% absolute ethanol and 50% ammonium sulfate aqueous solution;
[0120] The concentration of the ammonium sulfate aqueous solution is 0.32g / L;
[0121] (2), Utilize the tea polyphenols content in the extract obtained in step (1) to detect by Folin’s phenol method, then add the metal ion complexing agent into the extract and mix well and let it stand for 15min, then centrifuge the extract at 4400rmp 10min, obtain precipit...
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