Fig. 3From: Machine learning for a rapid discrimination of ginseng cultivation age using 1H-NMR spectraRepresentative proton nuclear magnetic resonance (1H NMR) spectra of ginseng. a 4-year-old-ginseng, 5-year-old-ginseng, 6-year-old-ginseng. b Expanded 1H NMR spectra of ginsengBack to article page