Preparation method and application of effective part of dracocephalum heterophyllum benth
A technology for the effective parts of Qinglan Heterophylla, which is applied to the preparation of the effective parts of Qinglan Heterophyllum. The effective parts of Qinglan Heterophyllum are used in the field of drugs for preventing and treating hypertension, and can solve the problems that the incidence of heart failure and mortality are not effectively controlled.
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Embodiment 1
[0015] Example 1: Preparation of the effective part of Qinglan heterophylla:
[0016] Grind 12 kg of dry above ground parts of Qinglan phoenix into 2 cm, add 5 times the volume of 50% ethanol to heat and reflux for extraction at a temperature of 75°C for 1 hour, cool to room temperature, and concentrate in vacuo to obtain the ethanol extract of Qinglan phoenix ;
[0017] The obtained ethanol extract is separated by AB-8 macroporous resin, first eluted with 3 times the column volume of water, and then eluted with 50% ethanol to obtain the ethanol fraction, and then concentrated in a vacuum to obtain Qinglan isophyllum Total flavonoids fraction 205g.
Embodiment 2
[0018] Embodiment 2: Preparation of the effective part of Qinglan heterophylla:
[0019] Grind 12 kg of dry aerial parts of Qinglan phoenix into 2 cm, add 10 times the volume of 70% ethanol to heat and reflux for extraction at a temperature of 90°C for 2 hours, cool to room temperature, and concentrate in vacuo to obtain the alcoholic extract of Qinglan phoenix ;
[0020] The obtained ethanol extract is separated by HPD-450 macroporous resin, first eluted with 3 times the column volume of water, and then eluted with 70% ethanol to obtain the ethanol fraction, and then concentrated in vacuum to obtain the green orchid The total flavonoid fraction is 187g.
Embodiment 3
[0021] Embodiment 3: Preparation of the effective part of Qinglan heterophylla:
[0022] Grind 12 kg of dry aboveground parts of Qinglan phoenix into 2 cm, add 15 times the volume of 60% ethanol to heat and reflux for extraction at a temperature of 80°C for 3 hours, cool to room temperature, and concentrate in vacuo to obtain the alcoholic extract of Qinglan phoenix ;
[0023] The obtained ethanol extract is separated by polyamide resin, first eluted with 3 times the column volume of water, and then eluted with 60% ethanol to obtain the ethanol fraction, and then vacuum concentrated to obtain the total flavonoids Part 190g.
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