Propofol injection and its preparing method

[0047] In the preparation method of the present invention, the stirring time is controlled according to needs, and the stirring speed is selected at no less than 1500 revolutions per minute. This choice can be made according to needs. For homogenization by a high-pressure homogenizer, The homogenization conditions and time are well known to those skilled in the art, as long as the homogenized milk particles must not have particles larger than 5 μm, and particles larger than 1 μm should not exceed 3%.

[0048] In the preparation method of the present invention, the choice of inert gas is generally nitrogen.

[0049] In the preparation method of the present invention, the heating temperature is also well known to those skilled in the art, and is generally 65-80°C, preferably 70°C.

[0051] Example 1

[0052] Under the protection of nitrogen, weigh 100g soybean oil for injection and heat to 70℃, add 12g egg yolk lecithin and 10g propofol under high-speed stirring, and mix well as the oil phase; add 22.5g glycerol for injection into 600ml water for injection , After mixing, use a 0.45μm filter membrane to filter as the water phase. Add the oil phase to the water phase under high-speed stirring to make colostrum. Measure the pH value to 8.0, add water for injection to 1000ml, repeat homogenization with a high-pressure homogenizer, check the size of the milk particles, and all the particles are less than 1μm in diameter. After the emulsion is filtered, it is filled with nitrogen, fused and sealed, and sterilized in a rotary steam sterilizer. After cooling, the propofol injection is obtained after passing the inspection.

[0053] Example 2

[0054]Under the protection of nitrogen, weigh 300g of soybean oil for injection and heat it to 80°C, add 15g of egg yolk lecithin and 12g of propofol under high-speed stirring, and stir evenly as the oil phase; add 25g of glycerol for injection to 600ml of water for injection, After mixing, filter with 0.45μm filter membrane as the water phase. Add the oil phase to the water phase under high-speed stirring to make colostrum. Measure the pH value to be 8.0, add water for injection to 1000ml, homogenize repeatedly with a high-pressure homogenizer, check the size of the milk particles, and all the particles are less than 1μm in diameter. After the emulsion is filtered, it is filled with nitrogen, fused and sealed, and sterilized in a rotary steam sterilizer. Propofol injection is obtained after cooling.