Leaf extract of Herba siegesbeckiae, preparation method and uses thereof
A technology for the leaves and extracts of A. chinensis, which is applied in the field of natural medicinal chemistry, can solve problems such as birth defects, and achieve the effects of low cost and high yield.
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Embodiment 1
[0019] (1) Take 1500 g of dried scutellaria leaves, pulverize them, add 10 times of 95% ethanol to reflux and extract twice, each time for 1.0 hour, filter, combine the filtrates, concentrate to a solution with a relative density of 1.15 at 50°C, and pass through After the treated macroporous adsorption resin column D101 is eluted with 25% ethanol, the eluent is discarded, followed by elution with 80% ethanol, the eluted fraction is collected, concentrated to recover ethanol, and the relative density at 50°C is further concentrated The extract is 1.20, and vacuum-dried to obtain the extract of the leaves of Siberia chinensis.
[0020] (2) the preparation prescription of the present invention is:
[0021] 150 grams of the extract of the leaves of Westerus chinensis, 75 grams of starch, 75 grams of microcrystalline cellulose, 10 ml of 2% PVP ethanol solution, 20 grams of CMS-Na, 5 grams of magnesium stearate as pharmaceutical excipients;
[0022] (3) Weigh each preparation comp...
Embodiment 2
[0024] (1) Take 1200 g of dry Sisia chinensis leaves, pulverize them, add 8 times of 70% ethanol to reflux and extract 3 times, each time for 0.5 hours, filter, combine the filtrates, concentrate to a solution with a relative density of 1.05 when concentrated to 50 ° C, and pass through After the treated macroporous adsorption resin column D201 is eluted with 25% ethanol, the eluent is discarded, followed by elution with 80% ethanol, the eluted fraction is collected, concentrated to recover ethanol, and the relative density at 50°C is further concentrated The extract of 1.10 was vacuum-dried to obtain the extract of the leaves of Siberia chinensis.
[0025] (2) the preparation prescription of the present invention is:
[0026] 150 grams of the extract of the leaves of the scorpion grass, the medicinal excipients are 75 grams of starch, 75 grams of microcrystalline cellulose, 100 grams of lactose, 12 ml of 2% PVP ethanol solution, and 10 grams of magnesium stearate;
[0027] (...
Embodiment 3
[0029] (1) Take 1800g of dry Sisia chinensis leaves, crush them, add 6 times of 50% ethanol to reflux and extract 4 times, each time for 1 hour, filter, combine the filtrates, concentrate to a solution with a relative density of 1.12 at 50°C, and pass After the treated macroporous adsorption resin column D301 is eluted with 25% ethanol, the eluent is discarded, followed by elution with 80% ethanol, the eluted fraction is collected, concentrated to recover ethanol, and the relative density at 50°C is further concentrated The extract is 1.15, and vacuum-dried to obtain the extract of the leaves of Siberia chinensis.
[0030] (2) 200 grams of the extract of the leaves of the sage, the medicinal excipients are 200 grams of HPMC (K4M), and 10 grams of magnesium stearate;
[0031] (3) Weighing each preparation component, passing the extract of the leaves of Sickles grass and the above auxiliary materials through an 80-mesh sieve, mixing evenly, and pressing into tablets to obtain 10...
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