Method for controlling quality of Resina Draconis drug
A technology of dragon's blood and medicinal materials, which is applied in the field of quality control of dragon's blood medicinal materials
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Embodiment 1
[0248] Example 1: Determination method of total phenol content
[0249] a. Source of reference substance: 7,4'-dihydroxyflavone, for content determination, purity 98.23%
[0250] Preparation of reference solution: Take an appropriate amount of 7,4'-dihydroxyflavone, accurately weigh it, place it in a brown measuring flask, add absolute ethanol to make a solution containing 28μg per 1ml, and get it;
[0251] b. Preparation of standard curve: accurately measure 0, 1.0, 1.5, 2.0, 2.5, 3.0ml of reference solution, put them into 25ml measuring flasks, add absolute ethanol to 5ml, add 0.2% dodecyl sulfonic acid Sodium solution 2ml, 0.5% potassium ferricyanide solution 1ml, 0.8% ferric chloride solution 1ml, shake well, place in a dark place for 4 minutes, then add 0.1M hydrochloric acid to the mark, shake well, and protect from light Leave it in place for 30 minutes, with the first copy as blank; according to the UV-Vis spectrophotometry in Appendix VB of the Chinese Pharmacopoeia 2005, t...
Embodiment 2
[0256] Example 2: Determination method of total phenol content
[0257] a. Source of reference substance: 7,4'-dihydroxyflavone, for content determination, purity 98.23%
[0258] Preparation of the reference solution: Take an appropriate amount of 7,4'-dihydroxyflavone, accurately weigh it, place it in a brown measuring flask, add absolute ethanol to make a solution containing 32μg per 1ml, and get it;
[0259] b. Preparation of standard curve: accurately measure the reference solution 0, 1.0, 1.5, 2.0, 2.5, 3.0ml, put them into 25ml measuring flasks, add absolute ethanol to 5ml, add 0.3% dodecyl sulfonic acid 2ml of sodium solution, 1ml of 0.6% potassium ferricyanide solution, 1ml of 0.9% ferric chloride solution, shake well, place in a dark place for 5 minutes, then add 0.1M hydrochloric acid to the mark, shake well, and protect from light Leave it in place for 35 minutes, with the first copy as blank; according to the UV-Vis spectrophotometry in Appendix VB of the Chinese Pharmac...
Embodiment 3
[0264] Example 3: Determination method of total phenol content
[0265] a. Source of reference substance: 7,4'-dihydroxyflavone, for content determination, purity 98.23%
[0266] Preparation of the reference solution: Take an appropriate amount of 7,4'-dihydroxyflavone, accurately weigh it, place it in a brown measuring flask, add absolute ethanol to make a solution containing 35μg per 1ml, and get it;
[0267] b. Preparation of standard curve: accurately measure 0, 1.0, 1.5, 2.0, 2.5, 3.0ml of reference solution, put them into 25ml measuring flasks, add absolute ethanol to 5ml, and 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 10 minutes, add 0.1M hydrochloric acid to the mark, shake well, and protect from light Place for 40 minutes, with the first copy as blank; according to the UV-Vis spectrophotometry in Appendix VB of the Chinese Pharmacopoeia 2005, ...
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