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用截留值10000的聚丙烯腈膜研究了7种中药体系的超滤情况,发现各种体系的相对通量有大致相同的变化趋势;4种体系中代表性成分测定结果表明,有效成分的回收率都在60%以上,明显地高于醇沉后的回收率。
The ultrafiltration of seven traditional Chinese medicine systems was studied using a polyacrylonitrile film with a cut-off value of 10,000. It was found that the relative fluxes of the various systems had roughly the same trend of change; the determination results of the representative components in the four systems showed that the active ingredients were recovered. The rates are all above 60%, which is obviously higher than the recovery rate after alcohol precipitation.