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

Figure 5

Results for repeatability: score plot of the first two PCs (a) and loading plots for PC₁ (b) and PC₂ (c); representation of the three-way interaction (d). Experiments are numbered from 1 to 8 according to their order in Table 1; Exp 9 represents the center of the experimental domain.

(a)

(b)

(c)

(d)