High performance liquid chromatography measurement method for measuring content of artepillin C in soft capsules of Brazilian bee propolis
A high-performance liquid chromatography, medium-atepirin technology, applied in the directions of measuring devices, instruments, scientific instruments, etc., can solve problems such as the inability to accurately determine the content of atepirin in Brazilian propolis soft capsules and the like
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[0032] A high-performance liquid chromatography assay method for measuring the content of atipirin C in Brazilian propolis soft capsules has the following steps:
[0033] (1) Weigh a capsule sample directly and place it in a homogenizer. After homogenizing at a high speed, take 1.0g of the sample into a beaker, add 5.0mL of 10% sodium hydroxide solution (by mass percentage), and place Hydrolyze in a water bath at 70°C. After the sample is completely dissolved, continue to hydrolyze for 15 minutes, cool naturally to room temperature, add hydrochloric acid to acidify, until the pH of the solution is 2.0. Then add 25mL absolute ethanol, ultrasonic extraction, extraction frequency 50Khz, temperature 40°C, extraction time 20min, transfer the sample liquid to a 50mL volumetric flask, wash the beaker twice with a small amount of ethanol, transfer it into the volumetric flask, and Dilute to volume with water and ethanol, shake well, and filter with 0.45µm filter membrane for determina...
experiment example 2
[0052] According to the steps of Example 1 of the present invention, the content of atipirin C in Brazilian propolis soft capsules stored for six months (at room temperature) was measured, and the content of atipirin C did not change significantly.
[0053] Table 1 Changes of atipirin C content in different Brazilian propolis soft capsule samples stored for 6 months, among which, sample 1 was purchased from Beijing market, sample 2 was purchased from Nanjing market, sample 3 was purchased from Nanjing market, sample 4 was purchased from Shanghai market.
[0054]
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