Medicament for preventing and treating Alzheimer's disease
A technology of drugs and pharmaceutical preparations, applied in the field of medicine
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Embodiment 1
[0045] Example 1 Extraction and preparation of total flavonoids of Selaginella:
[0046] Medicinal material 1kg, with 8 times of 30-95% ethanol (preferably 75% ethanol) reflux extraction 2-3 times, extract 1~3 hour each time, decolorize with the activated carbon of extracting solution 1.5% (w / v), reclaim ethanol to No alcohol smell, add deionized water to adjust the concentration to 1.5g / ml of medicinal materials, adjust the pH to 4~5, let it stand for 24 hours, filter or centrifuge, take the precipitate, dissolve it with ethanol, and mix the ethanol soluble part into the pre-treated In D101 or AB-8 macroporous resin, fully adsorb, shake off the ethanol, add the macroporous resin of the adsorbed sample to the upper end of the pre-installed macroporous resin column, first elute 3-4BV with 30-40% ethanol , and then eluted 3-4BV with 60-70% ethanol, collected the eluted part of 60-70% ethanol, recovered the ethanol, and dried to obtain the total flavonoids of Selaginella.
Embodiment 2
[0047] Example 2 Preparation of Biflavone
[0048] Separation and purification of the total flavonoids of Selaginella chinensis on a C-18 reverse-phase column (atmospheric pressure), using 20-50% aqueous methanol as the eluent, collecting the biflavonoid fractions of Selaginella chinensis, combining them after TLC identification, and evaporating part of the solvent , to obtain the crystallization of the biflavone of Suicha chinensis.
Embodiment 3
[0049] Example 3 (capsules)
[0050] 100g of abiflavonoids or total flavonoids raw materials, appropriate amount of medicinal starch, mixed evenly, granulated, dried, granulated, filled into No. 1 capsules, made into 1000 capsules, and ready. Take 1 capsule of biflavones each time and 2 capsules of total flavonoids each time, 3 times a day.
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