OBJECTIVE

To study the effects of different growing years on the accumulation of flavonoids and saponins in Astragali Radix, in order to offer evidence to determine the most appropriate harvest time.

METHODS

HPLC method was developed for the determination of the contents of flavonoids and saponins.

RESULTS

The contents of flavonoids and saponins in different growing years of Astragali Radix existed obvious differences, the longer growing, the content was relatively higher.

CONCLUSION

With the increase of growing years, the contents of flavonoids and saponins are roughly rising year by year, the harvest time has a great influence on the accumulation of the compositions.