[Comparison of 4 extraction methods for antidotal granules of Coptis]

Four extraction methods for Antidotal Cranules of coptis were compared, with berberine, barcalin and gardenoside taken as the indexes. The result shows that the total contents of three components appear in the following order: semi-bionic extraction > semi-bionic extraction with precipitation with alcohol > extraction with water > extraction with water plus precipitation with alcohol.