From 5 kg of dried lotus leaf to obtain 80, 5g of controlled extract of nuciferine with 10% of nuciferine were determined by HPLC / PDA method.
Từ 5 kg lá sen khô đạt tiêu chuẩn DĐVN V thu được 80, 5g cao định chuẩn lá Sen chứa 10% nuciferin.