Method for detecting Resina Draconis drug
A technology of dragon's blood and its determination method, which is applied in the field of quality control of dragon's blood medicinal materials
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Embodiment 1
[0246] Embodiment 1: the content assay method of total phenol
[0247] a. Source of reference substance: 7,4′-dihydroxyflavone, used for content determination, with a purity of 98.23%
[0248] Preparation of the reference substance solution: Take an appropriate amount of 7,4′-dihydroxyflavone, weigh it accurately, put it in a brown measuring bottle, add absolute ethanol to make a solution containing 28 μg per 1 ml, and obtain it;
[0249] b. Preparation of standard curve: Accurately measure reference substance solution 0, 1.0, 1.5, 2.0, 2.5, 3.0ml, put them in 25ml measuring bottles respectively, add absolute ethanol to 5ml, add 0.2% dodecylsulfonic acid Sodium solution 2ml, 0.5% potassium ferricyanide solution 1ml, 0.8% ferric chloride solution 1ml, shake well, place in a dark place for 4min, add 0.1M hydrochloric acid to the mark, shake well, put in dark place According to the ultraviolet-visible spectrophotometry method of appendix VB of the Chinese Pharmacopoeia 2005 edit...
Embodiment 2
[0254] Embodiment 2: the content assay method of total phenol
[0255] a. Source of reference substance: 7,4′-dihydroxyflavone, used for content determination, with a purity of 98.23%
[0256] Preparation of the reference solution: take an appropriate amount of 7,4′-dihydroxyflavone, accurately weigh it, put it in a brown measuring bottle, add absolute ethanol to make a solution containing 32 μg per 1 ml, and obtain it;
[0257] b. Preparation of standard curve: Accurately measure reference substance solution 0, 1.0, 1.5, 2.0, 2.5, 3.0ml, put them in 25ml measuring bottles respectively, add absolute ethanol to 5ml, add 0.3% dodecylsulfonic acid Sodium solution 2ml, 0.6% potassium ferricyanide solution 1ml, 0.9% ferric chloride solution 1ml, shake well, put it in a dark place for 5min, add 0.1M hydrochloric acid to the mark, shake well, put it away from light According to the ultraviolet-visible spectrophotometry method of appendix VB of the Chinese Pharmacopoeia 2005 edition,...
Embodiment 3
[0262] Embodiment 3: the assay method of total phenol
[0263] a. Source of reference substance: 7,4′-dihydroxyflavone, used for content determination, with a purity of 98.23%
[0264] Preparation of the reference substance solution: Take an appropriate amount of 7,4′-dihydroxyflavone, weigh it accurately, put it in a brown measuring bottle, add absolute ethanol to make a solution containing 35 μg per 1 ml, and obtain it;
[0265] b. Preparation of standard curve: Accurately measure reference substance solution 0, 1.0, 1.5, 2.0, 2.5, 3.0ml, put them in 25ml measuring bottles respectively, add absolute ethanol to 5ml, add 0.4% dodecyl sulfonic acid 2ml of sodium solution, 1ml of 0.7% potassium ferricyanide solution, 1ml of 1.0% ferric chloride solution, shake well, place in a dark place for 10min, add 0.1M hydrochloric acid to the mark, shake well, put in dark place According to the ultraviolet-visible spectrophotometry method of appendix VB of the Chinese Pharmacopoeia 2005 e...
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