Optimization of the Extraction of the Volatile Fraction from Honey Samples by SPME-GC-MS, Experimental Design, and Multivariate Target Functions

Figure 2

PCA results for signal intensity: loading plots for PC₁ (a) and PC₂ (b) and score plot of the first two PCs (c) with scores labeled according to extraction temperature. Experiments are numbered from 1 to 8 according to their order in Table 1; Exp 9 represents the center of the experimental domain. The last letter in the labels refers to the replication of the experimental design: “a,” “b,” or “c.”

(a)

(b)

(c)