Fig. 1From: Influence of sulfur fumigation on glycoside profile in Platycodonis Radix (Jiegeng)Representative base peak chromatograms of Jiegeng samples. a Air-dried Jiegeng in negative ion mode; b Sulfur-fumigated Jiegeng in negative ion mode; c Air-dried Jiegeng in positive ion mode; d Sulfur-fumigated Jiegeng in positive ion modeBack to article page