[Study on the dynamic change of flavonoids content in Mentha haplocalyx].

OBJECTIVE: To determine the dynamic change of total flavonoids and its main aglycone and glycoside content in Mentha haplocalyx Briq. METHODS: Using UV-VIS spectrum and HPLC method for the total flavonoids and its aglycone and glycoside. RESULTS: The accumulation of flavonoids showed a regular pattern. CONCLUSION: The contents of total flavonoids and its main aglycone and glycoside are highest in the traditional harvesting time.