The temperature of the column was 25 °C with
the UV detection at 270 nm. The injection volume was 10 μl.
The gradient system started with 4%B at 0 min to 80%B in
27 min. The total run time is 30 min. Retention times of gallic
acid, corilagin, and ellagic acid are 6.69, 19.22, and 25.65 min,
respectively (Fig. 2)