Application of medicinal soy phospholipids in new drugs

Application of medicinal soybean phospholipids in new drugs [8030-76-0] Soy phospholipids are phospholipid blends
refined from soybeans.
According to the anhydrous calculation, the nitrogen (N) should be 1.
5%~2.
0%, phosphorus (P) should not be less than 2.
7%, phosphatidylcholine should not be less than 45.
0%, phosphatidylethanolamine should not exceed 30.
0%, and the total amount of phosphatidylcholine and phosphatidylethanolamine should not be less than 70%.

【Properties】 This product is yellow to brown semi-solid, lumpy
.
This product is soluble in or ethanol, insoluble
in acetone.
Acid number The acid number of this product (General rule 0713) should not be more than 30
.
Iodine value The iodine value of this product (General rule 0713) should not be less than 75
.
Peroxide value The peroxide value of this product (General 0713) should not be greater than 3.
0
.
【Identification】 (1) take about 10mg of this product, add 2ml of ethanol, add 1~2 drops of 5% cadmium chloride ethanol solution, that is, produce white precipitate
.
(2) take 0.
4g of this product, add 2ml of ethanol, add bismuth potassium nitrate solution (take bismuth nitrate 8g, add 20ml nitric acid to dissolve; take another 27.
2g of potassium iodide, add 50ml of water to dissolve, combine the above two solutions, dilute to 100ml with water) 1~2 drops, that is, brick red precipitate
.
(3) In the chromatogram recorded under the determination of phosphatidylcholine and phosphatidylethanolamine content, the retention time of the main peak of the test solution should be consistent
with the retention time of the main peak of the reference solution.
【Check】 The color of the solution take an appropriate amount of this product, add ethanol to make a solution containing 6mg per 1ml, according to ultraviolet-visible spectrophotometry (General rule 0401), the absorbance is measured at a wavelength of 350nm, not more than 0.
8
.
acetone insoluble substance take 1.
0g of this product, precision weighing, add about 15ml of acetone, stir to dissolve it, filter with G4 vertical molten glass crucible, the residue is washed with acetone, and wash until acetone is almost colorless
.
The residue is dried to constant weight at 105 °C, and the insoluble matter shall not be less than 90.
0%.