Plant Phenomics / 2021 / Article / Fig 4

Research Article

Terahertz Spectroscopy for Accurate Identification of Panax quinquefolium Basing on Nonconjugated 24(R)-Pseudoginsenoside F11

Figure 4

Principal component analysis based on terahertz spectra. (a) Principal component scores for 50 samples. Black circles, Panax quinquefolium samples; blue squares, ginseng from the family Araliaceae; red triangles, non-Araliaceae herbs; gray rhombi, other substances. (b) Principal component scores for P. quinquefolium from different growing regions. Red pentagons, seven batches of P. quinquefolium produced in North America; blue pentacles, seven batches of P. quinquefolium produced in China (Jilin).

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