Epidermal growth factor complex liposome and its preparation method and application
An epidermal growth factor and compound technology, which is applied in skin care preparations, pharmaceutical formulations, cosmetic preparations, etc. Prevent skin aging and other problems, achieve the effect of preventing bad cell growth, maintaining cell elasticity, clearing heat and draining skin fatigue
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Embodiment 1
[0031](1) Dissolve 30mg of hydrogenated lecithin, 10mg of cholesterol, 5mg of silibinin and 5mg of coix seed oil in 50ml of absolute ethanol to prepare a membrane material solution; 0.1mg of epidermal growth factor, 5mg of yeast extract, 5mg of microbial polysaccharide Dissolve 5mg glycerol in 10ml phosphate buffer (PH6.8) to prepare EGF solution;
[0032] (2) Put the above-mentioned membrane material solution and EGF solution into a supercritical autoclave, seal the supercritical autoclave, and feed CO2 through a carbon dioxide high-pressure pump 2 , emulsified at a pressure of 10Mpa and a temperature of 30°C for 20 minutes, CO 2 The flow rate is 15L / h; the emulsified product is separated under reduced pressure, the separation temperature is 30°C, and the separation pressure is 5Mpa; the separated emulsified product is collected to obtain the epidermal growth factor complex liposome I.
Embodiment 2
[0034] (1) Dissolve 50mg of hydrogenated lecithin, 15mg of cholesterol, 10mg of silibinin and 10mg of coix seed oil in 50ml of absolute ethanol to prepare a membrane material solution; 0.5mg of epidermal growth factor, 8mg of yeast extract, 8mg of microbial polysaccharide Dissolve 10mg glycerol in 10ml phosphate buffer (PH6.8) to prepare EGF solution;
[0035] (2) Put the above-mentioned membrane material solution and EGF solution into a supercritical autoclave, seal the supercritical autoclave, and feed CO2 through a carbon dioxide high-pressure pump 2 , emulsified at a pressure of 15Mpa and a temperature of 35°C for 25 minutes, CO 2 The flow rate is 15 L / h; the emulsified product is separated under reduced pressure, the separation temperature is 35° C., and the separation pressure is 6 MPa; the separated emulsified product is collected to obtain the epidermal growth factor complex liposome II.
Embodiment 3
[0037] (1) Dissolve 80mg of hydrogenated lecithin, 25mg of cholesterol, 12mg of silibinin and 20mg of coix seed oil in 50ml of absolute ethanol to prepare a membrane material solution; mix 1mg of epidermal growth factor, 10mg of yeast extract, 10mg of microbial polysaccharide and Dissolve 15mg glycerol in 10ml phosphate buffer (PH6.8) to prepare EGF solution;
[0038] (2) Put the above-mentioned membrane material solution and EGF solution into a supercritical autoclave, seal the supercritical autoclave, and feed CO2 through a carbon dioxide high-pressure pump 2 , emulsified at a pressure of 15Mpa and a temperature of 40°C for 30 minutes, CO 2 The flow rate is 15L / h; the emulsified product is separated under reduced pressure, the separation temperature is 40°C, and the separation pressure is 8Mpa; the separated emulsified product is collected to obtain the epidermal growth factor complex liposome III.
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