Tracing the Geographical Origins of Dendrobe (<i>Dendrobium</i> spp.) by Near-Infrared Spectroscopy Sensor Combined with Porphyrin and Chemometrics

<div>The original NIR spectra of dendrobe (a) and dendrobe with TMPP (b).</div>

Journal of Analytical Methods in Chemistry

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Figure 2: Tracing the Geographical Origins of Dendrobe (<i>Dendrobium</i> spp.) by Near-Infrared Spectroscopy Sensor Combined with Porphyrin and Chemometrics 

Figure 2 | Tracing the Geographical Origins of Dendrobe (Dendrobium spp.) by Near-Infrared Spectroscopy Sensor Combined with Porphyrin and Chemometrics 