Table 1.
Fast gas chromatography determination of TmEO compounds.
Fig 1.
(A) Score plot of PC2 vs. PC1. (−) tentative two-dimensional clustering. (B) 3D-Score plot of PC3 vs. PC2 and PC1. (−) tentative three-dimensional clustering. The loading plot of PC2 and PC1 (Fig 2) shows the “characteristic” compounds of each cluster. The loadings of compounds are standardized. A high load of a compound indicates that its presence (high or low percentage of the total area) is “characteristic” of that TmEO. TmEO-1 and -3 are characterized by the high proportion of 1,8-cineole (11), as well as the average level proportion of linalool (16). For their part, β-ocimene (12), E-β-caryophyllene (31), γ-gurjunene (36) and γ-cadinene (39) are found in higher percentages in TmEO-1 and -3 than in the other TmEOs. TmEO-2 shows a characteristic high concentration of 1,8-cineole (11), and also of β-pinene (5), and δ-terpineol (19). Characteristic compounds of TmEO-4 are the high proportion of linalool (16), hotrienol (17), linalyl acetate (24) and caryophyllene oxide (43). These qualitative data are useful to explain the quantitative similarities between the clusters considered in the AHC analysis.
Fig 2.
(A) Loading plot of PC2 vs. PC1. (B) 3D-loading plot of PC3 vs. PC2 and PC1.
Fig 3.
Percentage of similarities between studied TmEOs and clusters.
Table 2.
TmEO compositions compared with ISO standards.
Table 3.
Enantiomeric ratios of TmEO compoundsa.
Table 4.
Antioxidant capacity of TmEOs and their main individual compoundsa.
Table 5.
Antienzymatic activity of TmEOs and their individual compoundsa.
Table 6.
Antimicrobial capacity of TmEOs and main individual compounds.