[HPLC fingerprint analysis of acetoacetate extraction of Polygonum orientale].

Objective: To establish the HPLC fingerprint analysis method for the quality control of acetoacetate extraction of Polygonum orientale.

Methods: Agilent C18 (4.6 mm x 250 mm, 5 microm); DAD detector; Mobile phase: methyl alcohol-water gradient elution at a flow rate of 1.

[HPLC fingerprint of flavonoids in fruits of Polygonum orientale].

Objective: To compare HPLC fingerprint of flavonoids in fruits of Polygonnm orientale from different regions.

Methods: Diamonsil C18 (250 mm x 4.6 mm, 5 microm) had been used, the mobile phase consisted of methanol and 0.