Fig. 5: Analysis of Raman spectra from Ghana.
From: Raman on the palm: handheld Raman spectroscopy for enhanced traceability of palm oil
PCA scores plot of Raman spectra for palm oil samples collected from various regions of Ghana (a) alongside a map highlighting their specific regions of origin (b). Each sample is represented by three spectra, with each spectrum plotted as an individual score. The shapes indicate the distinct sources of the oils, while the colours correspond to their respective regions of origin. Corresponding PCA loadings plots are provided in Supplementary Fig. 3b.
