Drug compound for preventing and curing diabetes mellitus
A composition and a technology for diabetes are applied in the field of compositions extracted from natural plants, and can solve the problems of complex process route, high production cost, lack of significant medicinal effect, effective ingredients and mechanism of action, etc.
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Embodiment 1
[0088] Example 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, nebulizing gas flow rate 2.6 SPLM. The injection volume was 20 μl.
[0090] Mobile phase A: acetonitrile; mobile phase B: 0.5% aqueous formic acid; equilibrated with 30% mobile phase B, eluted with a linear gradient over 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 products into a 10 ml measuring flask, add appropriate amount of methanol, ultrasonically treat to dissolve, let cool, add methanol to dilute to the mark, shake well, Reconfigured into 1.0mg / ml Timosaponin B-II, B-III reference solution and 1.0mg / ml Timosaponin A-III reference solution for later use.
[0092] Accurately weigh 25mg of total Anemarrhena saponin extract, put it in a 25ml volumetric flas...
Embodiment 2
[0096] Example 2 Determination of mangiferin content
[0097] Column: Diamonsil from Dima R C 18 Column (250 mm x 4.6 mm, 5 μm); column temperature was 20°C.
[0098] Mobile phase: acetonitrile-water (15:85, v / v), (pH adjusted to 3.0 with phosphoric acid); flow rate: 1 ml / min; injection volume 20 μL.
[0099] Detection wavelength: 254nm.
[0100] Precisely weigh 6.3 mg of mangiferin reference substance, put it in a 25ml volumetric flask, add an appropriate amount of methanol, ultrasonically treat it to dissolve, let it cool, add methanol to dilute to the mark, shake well, and prepare a 0.252mg / ml mangiferin reference substance solution for use. .
[0101] Accurately weigh 10 mg of Anemarrhena chinensis total flavonoids extract, put it in a 25ml volumetric flask, add an appropriate amount of methanol, ultrasonically treat it to dissolve, let it cool, add methanol to dilute to the mark, shake well, and then dilute to an appropriate concentration, it is the total flavonoids o...
Embodiment 3
[0105] Example 3 Determination of Berberine Content
[0106] High performance liquid chromatography: Agilent 1100 system; Hangzhou Yingpu 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: 345 nm; flow rate: 1 ml / min.
[0109] Accurately weigh 10.0 mg of berberine hydrochloride into a 25 ml volumetric flask, add methanol to dissolve to the mark, prepare a 400 μg / ml stock solution, accurately draw 0.5 ml of the berberine stock solution, add methanol to dissolve and dilute to 10 ml, Make 1ml of reference solution containing 20μg of berberine.
[0110] Precisely weigh 10 mg of Phellodendron chinensis extract, put it in a 25ml volumetric flask, add an appropriate amount of methanol, ultrasonically treat it to dissolve, let it cool, add methanol to dilute to the mark,...
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