Hyper-concentrated placenta tissue hydrolysate freeze-drying capsules and its preparation method
A placenta, tissue fluid technology, applied in freeze-drying delivery, capsule delivery, drug combination and other directions, can solve the problem of placenta, such as large molecular weight
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Embodiment 1
[0038]Put the placental tissue stock solution into the extraction kettle, pass in 30-40Mpa of carbon dioxide, and extract at 30-40°C for 8-12 hours; after one-stage decompression separation, the operating pressure is 8-12Mpa, and the operating temperature is 30-35 ° C; and then carry out two-stage decompression separation, the condition is that the operating pressure is below 6Mpa, and the operating temperature is 15-25 ° C to obtain the placenta extract. Then the placenta extract was treated with endonuclease TCCRAC (20 / 18) at 30°C for 24 hours to reduce the molecular weight of the main component to below 6000 Daltons. The obtained small molecule extract was freeze-dried at -40°C under a vacuum of 12 Pa to obtain a freeze-dried powder.
[0039] Weigh 80g of phospholipids, 40g of cholesterol and 33g of poloxamer (F68), dissolve with 1000ml of chloroform or dichloromethane to make liposome solution barium salt. Another 80g of extract and 240g of mannitol were passed through a ...
Embodiment 2
[0041] Put the placental tissue stock solution into the extraction kettle, pass in 20-30Mpa of carbon dioxide, and extract at 30-40°C for 8-12 hours; after one-stage decompression separation, the operating pressure is 8-12Mpa, and the operating temperature is 30-35 ° C; and then carry out two-stage decompression separation, the condition is that the operating pressure is below 6Mpa, and the operating temperature is 15-25 ° C to obtain the placenta extract. Then the placenta extract was treated with endonuclease CTGAAG (16 / 14) at 30° C. for 18 hours to reduce the molecular weight of the main component to below 6000 Daltons. The ultrafiltration membrane with a molecular weight cut-off of 6000 Daltons ( U.S. millipore company, standard ultrafiltration system) ultrafiltration extract, make ultrafiltrate through freeze-drying, obtain freeze-dried powder, carry out endonuclease treatment repeatedly with ultrafiltration retentate, carry out ultrafiltration again. Repeat until almost a...
Embodiment 3
[0044] Put the placental tissue stock solution into the extraction kettle, pass in 20-30Mpa of carbon dioxide, and extract at 30-40°C for 8-12 hours; after one-stage decompression separation, the operating pressure is 8-12Mpa, and the operating temperature is 30-35 ° C; and then carry out two-stage decompression separation, the condition is that the operating pressure is below 6Mpa, and the operating temperature is 15-25 ° C to obtain the placenta extract. Then the placenta extract was treated with endonuclease CTTGAG (16 / 14) at 30° C. for 24 hours to reduce the molecular weight of the main component to below 4000 Daltons. The extract was ultrafiltered with an ultrafiltration membrane with a molecular weight cut-off of 4000 Daltons (U.S. millipore company, standard ultrafiltration system), and the ultrafiltration retentate was repeatedly subjected to endonuclease treatment and then ultrafiltration. Repeat this until almost all the extract can pass through the ultrafiltration m...
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