GC-FID and NMR Spectroscopic Studies on Gamma Irradiated Walnut Lipids

Figure 2

(a) PCA map of the two first PCs on NMR data using Pareto scaling of the total sample set. , : 77.5%, and : 70.6%. Samples of MAP, air, and vacuum packages are denoted by a star, triangle, and box, respectively. While yellow, red, blue, and green colors correspond to 0, 5, 10, and 13 kGy, respectively, as also denoted by the labels. Only the mean values of each irradiation process are presented. (b) Contribution plot showing the difference between the average of the nonirradiated and irradiated samples. The variables with positive and negative values characterize the nonirradiated and the irradiated samples, respectively. (c) PCA map of PC1 and PC3 on NMR data of the total sample set. : 61% and : 70.6%. (d) Loading plot of PC3.

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