New application of Chinese flowing crabapple extractive and phlorizin
A technology of extract and phlorizin, applied in the field of crabapple extract and phlorizin, to achieve strong controllability, clear efficacy and mild effect
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Embodiment 1
[0039] Embodiment 1 The preparation of crabapple extract of the present invention, phlorizin
[0040] Take crabapple, add 10-30 times of water, heat and extract at 50-100°C for 2-3 times. The filtrate is concentrated under normal pressure or reduced pressure to obtain the extract for later use.
[0041] Phlorizin: isolated from Begonia, Hubei, the structure identification is as follows:
[0042] Phlorizin, gray needle-like crystals. Its ESI-MS mass spectrum shows its quasi-molecular ion peak 449[M+Na] + , combined with NMR data, its molecular formula is C 21 h 24 o 10 . Its one-dimensional carbon spectrum only shows 19 carbon signals, obviously two carbons overlap, which can be seen from the signal given by its one-dimensional hydrogen spectrum, the chemical shift is 7.04 (d, 8.5, 2H), 6.64 ( d, 8.5, the two hydrogen signals of 2H) are obviously adjacent hydrogen signals on the benzene ring, and its coupling constant is 8.5Hz, and its integral area is 2, indicating that...
Embodiment 2
[0047] Embodiment 2 The preparation of crabapple extract of the present invention
[0048] Take crabapple, add 10-30 times of 50-95% (v / v) ethanol to reflux and extract for 2-3 times. The filtrate is concentrated under normal pressure or reduced pressure to obtain the extract for later use.
Embodiment 3
[0049] Embodiment 3 The preparation of crabapple extract of the present invention
[0050] Take crabapple, add 10 times of water and heat at 50°C to extract twice. The filtrate is concentrated under normal pressure or reduced pressure to obtain the extract for later use.
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