Fig. 3.

PCA bioplot obtained from the fused dataset matrix of green coffee oil from the different extraction methods (a: score biplot, b: loading biplot). Extraction yield, EY; refractive index, RI; iodine value, IV; peroxide value, PV; acid value, AV; saponification value, SV; free fatty acid, FFA; saturated fatty acids, SFA; monounsaturated fatty acids, MUFA; polyunsaturated fatty acids, PUFA; UFA/SFA, unsaturated fatty acids/saturated fatty acids; ɑ-tocopherol, Alpha-T; δ-tocopherol, Delta-T; β-tocopherol, Beta-T; γ-tocopherol, Gamma-T; campesterol, Camp-S; stigmasterol, Stig-S; β-sitosterol, beta-Sito-S; total phenols, TP. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)