Method for determination of pinoresinol diglucoside in Eucommia ulmoides by ASE-HPLC method
A technology of pinoresinol diglucoside and methanol, which is applied in the field of chemical detection, can solve problems such as pressure failure and easy blockage, and achieve accurate measurement results
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[0029] Step 1: Take a sample of Eucommia ulmoides, cut it into pieces, crush it, pass through a No. 3 sieve, take about 1g, weigh it accurately, add diatomaceous earth in a ratio of 1:1 by weight, mix well, and put it in a 10ml extraction pool (sample loading Add an appropriate amount of diatomaceous earth to the bottom of the extraction pool before loading, and fill the extraction pool with diatomaceous earth after loading the sample).
[0030] Step 2: Put it in a Soxhlet extractor, add chloroform, heat and reflux for 6 hours, discard the chloroform extract, continue static extraction with methanol, recover the methanol extract into a 50ml measuring bottle, add methanol to the mark, Shake well, filter, and take the filtrate to obtain the methanol extract. The equipment is the ASE350 fast solvent extractor of DIONEX company in the United States;
[0031] Among them, the parameters for static extraction of methanol are as follows: extraction temperature is 100°C, extraction tim...
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