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. 2018 May 11;13(5):e0197340. doi: 10.1371/journal.pone.0197340

Fig 5.

Fig 5

(a) Fluorescence spectra between ghee samples heated at 150 and 200°C at excitation wavelength of 280 nm. (b) PCA scatter plot is displayed between PC1 and PC2 for the classification of samples heated at 150 and 200°C. (c) Loading vector of first principle component PC1. (d) Loading vector of second principle component PC2.