Preparation method and detection method of Himalayan teasel root standard decoction
A detection method and technology for decoction, which are applied in the field of preparation of continuum standard decoction, can solve problems such as insufficient quality and cannot reflect the quality of continuum standard decoction as a whole, and achieve good specificity and relative retention of characteristic maps. Time and relative peak areas are stable and reproducible
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[0138] As mentioned above, the present invention provides a kind of preparation method of standard decoction of dipsacrum, it comprises the following steps:
[0139] (1) Take Dipsacus medicinal material, add water to decoct, filter to obtain filtrate;
[0140] (2) Concentrating and drying the filtrate in step (1), and then freeze-drying. The freeze-drying is divided into three stages: a. pre-freezing: the pre-freezing temperature is -50 ° C ~ -45 ° C; The temperature is -20°C to 0°C; c. Secondary drying: the drying temperature is 5 to 25°C to obtain the Dipsacus standard decoction.
[0141] In a preferred specific embodiment of the present invention, wherein, in step (1), before adding water, the Dipsacus medicinal material needs to be washed, soaked and sliced, soaked after adding water, and before decocting. The time is 30 minutes.
[0142] In a preferred specific embodiment of the present invention, wherein, in step (1), the filtering is hot filtering, and the filtering i...
Embodiment 1
[0181] 1. The preparation method of Dipsacus standard decoction
[0182] (1) Take 100g of Dipsacus decoction pieces, add water to decoct twice, add 10 times the amount of water to the first decoction, soak for 30 minutes and start decocting, turn on strong fire (500W), after boiling, adjust to simmering fire (200W) for decoction For 30 minutes, filter with a 300-mesh filter cloth while it is hot, cool the filtrate in a water bath, add 7 times the amount of water to the second decoction, turn on a strong fire (500W), after boiling, adjust to a simmering fire (200W) and decoct for 20 minutes, and use a 300-mesh filter cloth while it is hot filter cloth to filter, and combine the two filtrates;
[0183] (2) Transfer the filtrate to a rotary evaporator for concentration (water bath temperature: 65°C, vacuum degree is -0.08~-0.09MPa), concentrate to a density of 1.03g / ml, adjust the solid content to 13%, and then transfer to a vacuum In the freeze dryer, pre-freeze first, the pre-...
Embodiment 2
[0306] 1. The preparation method of Dipsacus standard decoction
[0307] (1) Take 100g of Dipsacus decoction pieces, add water to decoct twice, add 10 times the amount of water to the first decoction, soak for 30 minutes and start decocting, turn on strong fire (500W), after boiling, adjust to simmering fire (200W) for decoction For 30 minutes, filter with a 300-mesh filter cloth while it is hot, add 7 times the amount of water to the second decoction, turn on a strong fire (500W), after boiling, adjust to a simmering fire (200W) and cook for 20 minutes, and filter with a 300-mesh filter cloth while it is hot , combined two filtrates;
[0308] (2) Transfer the filtrate to a rotary evaporator for concentration (water bath temperature: 50°C, vacuum degree is -0.08~-0.09MPa), concentrate to a density of 1.04g / ml, adjust the solid content to 14%, and then transfer to a vacuum In the freeze dryer, pre-freeze first, the pre-freeze temperature is -50°C, the pre-freeze time is 5h, an...
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