Abstract:
An anti-oxidative composition is provided to show synergetic effect as an antioxidizing agent by mixing a water-soluble anti-oxidative material with an oil-soluble anti-oxidative material, reduce possible side effects caused by taking a single anti-oxidative material and increase the maintenance time of in vivo anti-oxidation efficacy. An anti-oxidative composition comprises a water-soluble anti-oxidative material such as vitamin C, epigallocatechin-3-gallate(EGCG), proanthocyanidin and gallic acid and an oil-soluble anti-oxidative material such as vitamin E, curcumin, carotene, lipoic acid and coenzyme Q10. Further, the water-soluble anti-oxidative material and the oil-soluble anti-oxidative material are mixed at a weight rate of 1:2 to 4:1.
Abstract:
A method of manufacturing green tea with a high content of Gallocatechin-3-gallate(GCG) by subjecting green tea leaf to steam treatment at high temperature and pressure to epimerize epigallocatechin-3-gallate(EGCG) after steaming or roasting treatment of the green tea leaf is provided to increase the content of GCG by a thermal conversion method. To make green tea with a high content of Gallocatechin-3-gallate, green tea leaf is treated with steam or roasted. In the process, the steam treatment is performed more than 2 times or roasting time is increased by more than 20%. The steam treatment or roasting is performed within 30min. After the steam treatment or roasting, steam sterilization treatment is additionally performed for 1 to 240min.
Abstract:
A method for preparing gallocatechin gallate is provided to increase the solubility of epigallocatechin gallate into a reaction solvent by using an organic solvent and increase the conversion rate into the gallocatechin gallate through epimerization by adjusting the pH, thereby capable of increasing the production amount of the gallocatechin gallate. A method for preparing gallocatechin gallate comprises a step of converting epigallocatechin gallate into the gallocatechin gallate by dissolving the epigallocatechin gallate in an alcohol-based solvent such as ethanol and methanol or a polyol based solvent such as butylene glycol, propylene glycol and polyethylene glycol and then heating the solution at a temperature of about 120 deg.C for 30-60 minutes.
Abstract:
A composition containing (-)catechin is provided to increase expression of adiponectin by inhibiting expression of a transition factor KLF7(Kruppel-like factor 7) and promotes sugar absorption in adipocytes of mammals, so that the composition is useful for preventing and treating diabetes mellitus, arteriosclerosis and obesity. A composition for preventing and treating diabetes mellitus, arteriosclerosis and obesity contains 0.01-30 wt.%, preferably 1-15 wt.% of (-)catechin represented by the formula(1), wherein the (-)catechin is isolated from green tea. The daily dosage of (-)catechin is 0.1-50 mg/kg, preferably 1-20 mg/kg and the expression of adiponectin in a mammal adipocyte is increased by treating an adipocyte with (-)catechin for 24 hours.
Abstract:
A composition comprising a benzimidazole amine derivative or an aminoquinoline derivative is provided to inhibit signaling of a cell in melanocyte with which a c-kit protein is involved so as to control the function of the melanocyte, thereby providing skin-whitening effect. The composition for inhibiting c-kit protein or skin-whitening comprises 0.0001-10 wt.% of a benzimidazole amine derivative such as 1-(4-methoxyphenyl)-N-(1-naphthalenylmethal)-1H-benzimidazole-5-amine represented by the formula(1) or an aminoquinoline derivative such as 2-amino-3-(3,4-dimethoxyphenyl)-quinoline represented by the formula(2).
Abstract:
A skin external composition for inhibiting phagocytosis of keratinocytes comprising genistein or daidzein is provided to reduce mobility of melanosomes transferred from melanocytes in keratinocytes by inhibiting phagocytosis of keratinocytes activated by exposure to ultra violet ray without cytotoxicity, so that chloasma, freckles and speckles are treated and prevented. The skin external composition for inhibiting phagocytosis of keratinocytes comprises at least one selected from genistein and daidzein, wherein the amount of genistein or daidzein is 0.0001-10 wt.%; the genistein or daidzein is an isoflavone produced from Leguminosae plants and shows estrogen effects; and the composition is formulated as cream, lotion, ointment, aqueous solution, suspension, dispersion or emulsion.
Abstract:
PURPOSE: Provided is a skin whitening cosmetic composition which contains rhaponticin and rhapontigenin as an active ingredient. Therefore, the composition has high skin absorption and inhibits the synthesis of melanin. CONSTITUTION: A skin whitening cosmetic composition is characterized by containing, based on the total weight of the composition, 0.0001-10 wt.% of one of rhaponticin and rhapontigenin which are extracted from Rheum coreanum Nakai.
Abstract:
PURPOSE: Provided is a melanogenesis-suppressing peptide which effectively suppresses the activation of tyrosinase in the melanogenesis cells. A topical skin-whitening composition containing the melanogenesis-suppressing peptide involves excellent skin whitening effect, and effective improvement and prevention of chloasma, freckles, and other melanin pigmentation. CONSTITUTION: The melanogenesis-suppressing peptide is selected from the group consisting of peptides with the amino acid sequences of SEQ ID NO 1-4. A method of manufacturing the melanogenesis-suppressing peptide comprises the steps of preparing chemical peptide random-sequenced mixtures with 76 cases of 4(locations)x19(amino acids); selecting two or three amino acids per the respective peptide locations with enzyme activity inhibitory effect from the peptide mixtures using tyrosinase extracted from mushrooms; synthesizing secondary peptides based on the selected peptide sequences; and testing the whitening effect and the cell stability of the secondary peptides, and finally selecting the peptide with the amino acid sequences of SEQ ID NO 1-4.
Abstract translation:目的:提供有效抑制黑素生成细胞中酪氨酸酶活化的黑素生成抑制肽。 含有黑素生成抑制肽的局部皮肤美白组合物具有优异的皮肤美白效果,有效改善和防止黄褐斑,雀斑和其他黑色素色素沉着。 构成:黑素生成抑制肽选自具有SEQ ID NO 1-4的氨基酸序列的肽。 制备黑素生成抑制肽的方法包括以下步骤:制备具有76个4(位置)x19(氨基酸)的76个化学肽随机排序的混合物; 使用从蘑菇提取的酪氨酸酶从肽混合物中选择两个或三个氨基酸,每个肽位置具有酶活性抑制作用; 基于所选择的肽序列合成二级肽; 并测试第二肽的美白效果和细胞稳定性,最后选择具有SEQ ID NO 1-4的氨基酸序列的肽。