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UPLC-DAD chromatograms of mixed standards and S. japonicum flowers (A) and floral buds (B) subjected to microwave drying (MD), steam drying (STD), hot air drying (HAD), freeze drying (FD), and sun-drying (SD). 1-rutin (RU), 2-nicotiflorin (NI), 3-narcissoside (NA), 4-astragalin (AS), 5-quercetin (QU), 6-kaempferol (KA), 7-isorhamnetin (IS).
