Analysis of Macroporous Resin Combined Extraction and Purification of Polyphenols from <i>Agrimonia pilosa</i> Ledeb. and Anti-Tumor Effect In Vitro.

Figure 5 B shows that a resolution rate of 94.69% achieves the optimum separation when the ethanol concentration is 70%, while a further increase in ethanol concentration leads to a decreasing trend in the desorption rate.

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