Plant allergy-relieving agent and preparation method thereof
A plant soothing agent and extract technology, which is applied in the directions of drug combination, pharmaceutical formulation, allergic diseases, etc., can solve the problems of less retention of heat-sensitive ingredients, difficulty in applying cosmetics, and reduction in effective ingredients, so as to reduce channeling phenomenon, The color is not easy to change color and the extract is stable
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Embodiment 1
[0045] 30 parts of licorice, 30 parts of Artemisia annua, 10 parts of gentian, 20 parts of flavescens, and 10 parts of cnidium are used as raw materials. Add 5 times of 50% 1,2 propylene glycol, and extract in an extraction tank at 55°C. Such as figure 1 and figure 2 As shown, the expansion bed method and the fixed bed method are alternately extracted for 3 hours, and the expansion bed extraction stage is as follows figure 1 As shown, the fixed bed extraction stage is as figure 2 shown. The bed is fixed for 10 minutes first, followed by alternating 20 minutes of expanded bed-10 minutes of fixed bed, and finally 10 minutes of fixed bed extraction, the expansion of the expanded bed is 1.7 times, after the extraction is completed, filter with a 0.45 μm membrane, and then use a 5000D ultrafiltration The membrane is ultrafiltered under 3bar pressure until the permeate is 70% of the extract A, and the ultrafiltration is stopped, and the permeate is concentrated to 0.5g / ml of cr...
Embodiment 2
[0047] 20 parts of licorice, 20 parts of Artemisia annua, 20 parts of gentian, 20 parts of flavescens, 20 parts of Cnidium, add 8 times of 70% 1,2 propylene glycol, and extract in the extraction tank at 50 °C, such as figure 1 and figure 2 As shown, the expansion bed method and the fixed bed method are alternately extracted for 4 hours. First, the fixed bed is used for 10 minutes, and then the ratio of 10 minutes of expanded bed to 5 minutes of fixed bed is alternated. Finally, the fixed bed method is extracted for 10 minutes. The expansion factor of the expanded bed is 2 times. At the end of the extraction, filter with a 0.22 μm membrane, and then use an 8000D ultrafiltration membrane to perform ultrafiltration at a pressure of 5 bar until the permeate is 80% of the extract A. Stop the ultrafiltration, and use a nanofiltration membrane with a molecular weight cut-off of 150D for the permeate Concentrate to 0.5g / ml equivalent crude drug under 15bar pressure to obtain plant se...
Embodiment 3
[0049] 30 parts of licorice, 20 parts of Artemisia annua, 10 parts of gentian, 20 parts of flavescens, 20 parts of Cnidium, add 6.5 times of 60% 1,2 propylene glycol, and extract in an extraction tank at 40°C, such as figure 1 and figure 2 As shown, the expansion bed method and the fixed bed method are alternately extracted for 3.5 hours, and the bed is fixed for 10 minutes first, and then alternately according to the ratio of 15 minutes of the expanded bed to 7.5 minutes of the fixed bed, and finally the fixed bed method is extracted for 10 minutes, and the expansion factor of the expanded bed is 1.4 After the extraction, use a 0.22 μm membrane to filter, and then use an 8000D ultrafiltration membrane to perform ultrafiltration at a pressure of 4 bar until the permeate is 75% of the initial value. The filter membrane is concentrated to 0.5 g / ml equivalent to the crude drug under 12 bar pressure to obtain the phytosensitizer.
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