Comparison of bergenin contents of Bergenia purpurascens among different regions in Yunnan Province.

Bergenin contents of 18 populations of Bergenia purpurascens in Yunnan Province were analyzed by high-performance liquid chromatography(HPLC) and the results showed as follows:(1)There were most significant differences in bergenin contents among various organs of the same Bergenia population.Rhizome was the favorite organ for extracting bergenin.(2)Bergenin contents from rhizomes of different Bergenia populations were different at extremely significant level(P0.01) and between 9.77% and 3.15%.The rhizome of Bergenia population distributed in Yulong reservoir of Lijiang County was the best resource for bergenin exploitation in B.purpurascens.(3)Bergenin contents from laminae of different Bergenia populations were also different at most significant level and between 1.61% and 0.55%.