New usages of lotus plumule and alkaloid thereof and derivative thereof
A technology of lotus seed heart and usage, applied in the field of medicine, can solve the problem of no specific drug treatment for diseases
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Embodiment 1
[0031] Embodiment 1 The preparation of Lianxin total alkaloids of the present invention
[0032] Take the lotus seed heart, crush it, add 2 to 6 times of water, decoct 3 times, 0.5 to 2 hours each time, combine the filtrate, reflux to concentrate, filter, add 2 to 8 times of ethanol, so that the ethanol concentration in the water extraction solution reaches 50 to 60% . Let it stand for 12-24 hours, filter, and recover the ethanol from the filtrate under reduced pressure, concentrate it to a relative density of 1.20-1.40, dry it under reduced pressure, and obtain the lotus seed extract, that is, the total alkaloids of lotus heart. The content is determined by ultraviolet spectrophotometry, and the result: the weight percentage of the total alkaloids is 30-70%, and the weight percentage is 1-30% based on liensinine.
[0033]
Embodiment 2
[0034] The preparation of embodiment 2 Lianxin total alkaloids of the present invention
[0035] Take the lotus heart, crush it, use 2-5 times the amount of 70-85% ethanol to reflux extract 2-4 times, each time reflux extraction for 0.5-1.5h, filter the combined filtrate, recover ethanol under reduced pressure, and the relative density of concentration is 1.01-1.10 of concentrate. Use sulfuric acid to adjust the pH of the concentrated solution to 2.0-4.0, let it stand still, centrifuge, use 10-20% ammonia to alkalinize the centrifuged solution to adjust the pH to 8-10, let it stand still, filter to collect the precipitate, add ethanol to heat to dissolve, stand still, filter, The filtrate is recovered under reduced pressure to ethanol to the maximum, concentrated to a relative density of 1.20-1.40, and dried under reduced pressure to obtain the lotus heart extract, which is the total alkaloids of lotus heart. The total alkaloid content is 10% to 50%, accounting for 1% to 10% ...
Embodiment 3
[0037] The preparation of embodiment 3 Lianxin total alkaloids of the present invention
[0038] Take the lotus heart, crush it, put it into a percolator, add 2-6‰HCl to impregnate and expand for 24-48h, then add new 2-6‰HCl continuously, let it permeate through the medicinal material from top to bottom, from the lower part of the percolator Flow out and collect the leachate, combine all filtrates, alkalinize with 10-20% ammonia to pH 8-10, filter to obtain precipitate, and dry under reduced pressure to obtain total alkaloids of lotus heart, with a total alkaloid content of 2-30%. Alkali accounted for 1 to 15%. The content was determined by UV spectrophotometry.
[0039]
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