Objective To optimize the extraction process of Albizia julibrissin in Baijin Capsule. Methods Using the extraction rate of quercitrin and total flavonoids as indexes, the orthogonal design was used to investigate effects of solvent volume, extraction time and extraction frequency on extraction results. Results The optimal extracting condition was as follows:extracted 2 times with 12 fold 70%alcohol, 2 h for each time. Conclusion The optimized process condition was simple, stable and feasible. It provides the basis for the production of Baijin Capsule.
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