Drug composition for preventing and curing diabetes mellitus
A composition and diabetes technology, applied in the field of compositions extracted from natural plants, can solve the problems of lack of significant medicinal effect, effective ingredients and mechanism of action, complex process route and high production cost
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Embodiment 1
[0088] Embodiment 1 Determination of timosaponin A-III, B-II and B-III content
[0089] Column: Diamonsil TM C 18 (200mm×4.6mm, 5μm). Column temperature: 25°C, flow rate 1.0ml / min. ELSD detector, drift tube temperature 110°C, atomizing gas flow rate 2.6SPLM. The injection volume is 20 μl.
[0090] Mobile phase A: acetonitrile; mobile phase B: 0.5% formic acid aqueous solution; equilibrated with 30% mobile phase B, linear gradient elution in 30 minutes, and terminated with 90% mobile phase B.
[0091] Accurately weigh 25.0 mg each of timosaponin A-III, B-II and B-III standard substances, put them in a 10ml measuring bottle, add an appropriate amount of methanol, sonicate to dissolve, let cool, add methanol to dilute to the mark, shake well, Reconfigure into 1.0mg / ml timosaponin B-II, B-III reference substance solution and 1.0mg / ml timosaponin A-III reference substance solution, set aside.
[0092] Accurately weigh 25 mg of total saponins extract of Anemarrhena, put it in...
Embodiment 2
[0096] Embodiment 2 Determination of mangiferin content
[0097] Chromatographic column: Diamonsil from Dima Company R C 18 Column (250mm×4.6mm, 5μm); column temperature is 20°C.
[0098] Mobile phase: acetonitrile-water (15:85, v / v), (adjust pH=3.0 with phosphoric acid); flow rate: 1 ml / min; injection volume: 20 μL.
[0099] Detection wavelength: 254nm.
[0100] Precisely weigh 6.3mg of mangiferin reference substance, put it in a 25ml measuring bottle, add appropriate amount of methanol, sonicate to dissolve, let it cool, add methanol to dilute to the mark, shake well, and prepare 0.252mg / ml mangiferin reference substance solution, set aside .
[0101] Accurately weigh 10 mg of total flavonoids extract of Anemarrhena, put it in a 25ml volumetric flask, add an appropriate amount of methanol, sonicate to dissolve, let it cool, add methanol to dilute to the mark, shake well, and then dilute to an appropriate concentration, then it is total flavonoids of Anemarrhena Sample s...
Embodiment 3
[0105] Example 3 Determination of Berberine Content
[0106] High-performance liquid chromatography: Agilent 1100 system; Hangzhou British Spectrum chromatography workstation.
[0107] Column: Diamonsil TM C 18 (250mm×4.6mm, 5μm); the column temperature is 20°C; the injection volume is 20μl.
[0108] Mobile phase: water-acetonitrile-glacial acetic acid-triethylamine (67:33:0.3:0.8, v / v), detection wavelength: 345nm; flow rate: 1ml / min.
[0109] Accurately weigh 10.0 mg of berberine hydrochloride, put it in a 25 ml measuring bottle, add methanol to dissolve and make up to the mark, and configure it as a 400 μg / ml stock solution, accurately draw 0.5 ml of berberine stock solution, add methanol to dissolve and make up to 10 ml, Make 1ml of reference substance solution containing 20μg of berberine.
[0110] Accurately weigh 10 mg of Phellodendron Phellodendri extract, put it in a 25ml volumetric flask, add appropriate amount of methanol, sonicate to dissolve, let it cool, add ...
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