Comparisom of processing methods of Chrysanthemum morifolium Bozhou

Effects of processing methods on the content of active gradients in Chrysanthemum morifolium Bozhou were investigated. Chrysanthemum morifolium Bozhou was processed with the method of shade-drying, oven-drying at different temperatures, microwave-drying, or steam-drying. After processed, the contents of chlorogenic acid, luteolin-7-O-glucoside, and 3, 5-O-discaffeoylquinc acid in Chrysanthemum morifolium Bozhou were detected using HPLC. Results showed that the highest contents of chlorogenic acid, luteolin-7-O-glucoside, and 3, 5-O-discaffeoylquinc acid were 0.58%, 0.08% and 2.64%, respectively in shade-drying processed Chrysanthemum morifolium Bozhou. The content of luteolin-7-O-glucoside in oven-drying sample did not reach the minimum standard of Pharmacopoeia rules. The contents of the three components from microwave-drying and steam-drying processed samples also did not reach minimum standard of Pharmacopoeia rules. In conclusion, shade-drying processing method resulted in the highest content of the three active gradients and should be the best processing technique for Chrysanthemum morifolium Bozhou.