Application of rubus corchorifolius juice in preparing composition for conditioning skin
A technology of composition and application, which is applied in the direction of skin care preparations, cosmetic preparations, medical preparations containing active ingredients, etc., which can solve the problems of unfriendly environment and ecology, harmfulness to human health, rough skin, etc. Achieve the effects of reducing hemoglobin content, reducing red spots, and preventing skin aging
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Embodiment 1
[0059] [Example 1]: the preparation of the juice of dewberry (Rubus fruticosus)
[0060] First, the fruit of Rubus fruticosus (from Chile) is cut into a size of 12 mm, and then water, alcohols, hydroalcohols or a combination thereof are used as an extraction solvent to simultaneously homogenize and extract Rubus fruticosus. Extraction, wherein the extraction temperature is between 75°C and 95°C, preferably 80°C to 90°C, and the volume ratio of the extraction solvent to dewberry is between 5-20:1-5, preferably 5:1. The extraction temperature ranges from 50°C to 100°C, preferably from 80°C to 90°C. The extraction time in this embodiment is 0.5-3 hours, preferably 1 hour.
[0061] After the dewberry juice obtained through the above extraction steps is cooled to room temperature, it can be further centrifuged at 15°C-25°C for 5-10 minutes at a speed of 800-1300rpm to obtain a supernatant, which can be 400 mesh (mesh ) through a strainer to remove residual solids. Further concen...
Embodiment 2
[0062] [Example 2]: Detection of total flavonoids and total polyphenols content of dewberry juice
[0063] The analysis method for detecting the content of total flavonoids is mainly based on the method described by Zhishen Jia et al., (1999), Food Chemistry, 64: 555-559 and modified. Take 200 μL of an appropriately diluted sample and add 1000 μL of H 2 O. After mixing evenly, add 200 μL of 5% sodium citrate (Sodium nitrite), let it stand for 6 minutes, then add 200 μL of 10% aluminum nitrate (Aluminum nitrate), and let it stand for another 6 minutes. Finally, 2 mL of 4% sodium hydroxide (Sodium hydroxide) and 1.4 mL of H 2 O, mix well, analyze at 500nm, take rutin (Rutin) as the standard substance to draw the standard curve. In this example, the content of total flavonoids in the dewberry juice of Example 1 is between 1000 and 3000 ppm, preferably between 2000 and 3000 ppm, specifically 2248.9 ppm.
[0064] The analysis method for the detection of the total polyphenol conte...
Embodiment 3
[0065] [Example 3]: Cell experiment - dewberry juice inhibits generation of reactive oxygen species (ROS)
[0066] Herein, the fluorescent probe DCFH-DA was combined with a flow cytometer to measure the changes in the content of reactive oxygen species in human skin fibroblasts CCD-966sk treated with the dewberry extract composition.
[0067] Materials and Instruments
[0068] 1. Cell line: human dermal fibroblast CCD-966sk (Biological Resource Conservation and Research Center (BCRC), No. 60153), hereinafter referred to as CCD-966sk cell.
[0069] 2. Medium: basal medium containing 10 vol% FBS (fetal bovine serum, purchased from Gibco). Wherein, the basal medium is Eagle's minimum essential medium (Eagle's minimum essential medium (MEM), purchased from Gibco, product number 15188-319) with additional components added to make it contain 1mM sodium pyruvate (sodiumpyruvate, purchased from Gibco), It was prepared with 1.5 g / L sodium bicarbonate (sodium bicarbonate, purchased fr...
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