[Study on dynamic accumulation of flavone in various Chrysanthemum morifolium for medicine].

OBJECTIVE: To study the dynamic accumulation of flavonoids in Chrysanthemum morifolium in order to chose the optimal harvest time. METHOD: The flavonoid content was determined in various C. morifolium and in different periods. RESULT AND CONCLUSION: The accumulation of flavonoid in various Chrysanthemum reached a high level when lingulate flowers were in 50% blossom and tube ones in 30% or lingulate flowers were in 70% blossom and tube ones in 50%. Only few of C. morifolium reached a high level of flavonoid, when 1 both ingulate and tube flowers blossomed fully.