Compound extracted and separated from Tibetan medicine malus toringoides as well as method and application of compound
A compound, the technology of Ese, applied in the field of phytochemistry, can solve the problem of insufficient research on the chemical components of Tibetan medicine Ese, and achieve the effect of easy extraction and separation, good reference value, and simple separation method
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Embodiment 1
[0034] Example 1 Extraction and separation of compounds
[0035] Take 500g of dried leaves of Ese, crush them, add 6 times the weight concentration of 80% (W / W) ethanol, heat and reflux for extraction 5 times, combine the extracts, concentrate under reduced pressure until there is no alcohol smell, and get 700ml of concentrated extracts, add 4L of water Carry out dispersion treatment, then the aqueous dispersion is extracted 4 times respectively with equal volume ethyl acetate, n-butanol successively, obtain ethyl acetate extract 15g, n-butanol extract 8g and water phase part through recovering solvent. The n-butanol extract was completely dissolved in methanol, filtered through a 0.45 μm microporous membrane, and the filtrate was prepared and separated by high-pressure C18 reverse-phase chromatography packing, A: pure methanol B: 0.2% phosphoric acid water (V / V), A: B 30: 70 (V / V) is the mobile phase; the detection wavelength is 210nm, the corresponding chromatographic peaks ...
Embodiment 2
[0036] Example 2 Extraction and separation of compounds
[0037]Take 500g of dried leaves of Ese, crush them, add 10 times the weight concentration of 95% (W / W) ethanol to heat and reflux for extraction 4 times, combine the extracts, concentrate under reduced pressure until there is no alcohol smell, and obtain 850ml of concentrated extracts, add 6L of water Dispersion treatment was carried out, and then the water dispersion was extracted 5 times with equal volumes of ethyl acetate and n-butanol successively, and the solvent was recovered to obtain 17 g of ethyl acetate extract, 8.5 g of n-butanol extract and the water phase. The n-butanol extract was completely dissolved in methanol, filtered through a 0.45 μm microporous membrane, and the filtrate was prepared and separated by high-pressure C18 reverse-phase chromatography packing, A: pure methanol B: 0.2% phosphoric acid water (V / V), A: B 30: 70 (V / V) is the mobile phase; the detection wavelength is 210nm, the corresponding...
Embodiment 3
[0038] Example 3 Extraction and separation of compounds
[0039] Take 500g of dried leaves of Ese, crush them, add 12 times the weight concentration of 40% (W / W) ethanol to heat and reflux for extraction for 3 times, combine the extracts, concentrate under reduced pressure until there is no alcohol smell, and get 2500ml of concentrated extracts, add 15L of water Dispersion treatment was carried out, and then the aqueous dispersion was extracted three times with equal volumes of ethyl acetate and n-butanol successively, and 13.8 g of ethyl acetate extract, 7.8 g of n-butanol extract and the water phase were obtained by recovering the solvent. The n-butanol extract was completely dissolved in methanol, filtered through a 0.45 μm microporous membrane, and the filtrate was prepared and separated by high-pressure C18 reverse-phase chromatography packing, A: pure methanol B: 0.2% phosphoric acid water (V / V), A: B 30: 70 (V / V) is the mobile phase; the detection wavelength is 210nm, t...
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