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. 2021 Apr 9;7(4):e06718. doi: 10.1016/j.heliyon.2021.e06718

Table 2.

Chemical composition (% of all chromatogram peak areas) of the lipophilic extractives of young phloem of Pinus pinaster and Pinus pinea from three sites in Portugal (mean and standard deviation of three site per species).

Chemical family/Compound Pinus pinaster
Pinus pinea
Site 1 Site 2 Site 3 Average Site 1 Site 2 Site 3 Average
Terpenic compounds 36.1 44.7 43.1 41.3 ± 4.6 52.4 47.8 52.4 50.9 ± 2.7
Pimarane-type resin acids 8.2 8.7 11.9 9.6 ± 2.0 11.7 14.2 12.2 12.7 ± 1.3
 Pimaric acid 6.1 7.0 10.2 7.8 ± 2.2 7.1 7.3 7.9 7.4 ± 0.4
 Isopimaric acid 2.15 1.63 1.73 1.8 ± 0.3 4.60 6.89 4.2 5.2 ± 1.5
 Abietane-type resin acids 27.9 36.4 31.2 31.8 ± 4.3 40.7 33.7 40.2 38.2 ± 3.9
 Di(dehydroabietc acid) 1.5 3.9 2.4 2.6 ± 1.2 nd nd nd nd
 Dehydroabietic acid 11.4 6.9 11.4 9.9 ± 2.6 23.9 17.7 23.2 21.6 ± 3.4
 Abietic acid 9.1 14.4 11.7 11.7 ± 2.7 0.9 10.0 12.2 10.4 ± 1.6
 15-Hydroxy-dehydroabietic acid 2.5 1.5 2.2 2.1 ± 0.5 n d nd nd nd
 7-Hydroxy-dehydroabietic acid 3.4 2.3 3.7 3.1 ± 0.7 7.5 7.9 7.8 7.7 ± 0.2
Fatty acids 22.5 18.1 18.8 19.8 ± 2.4 14.2 20.7 13.9 16.3 ± 3.8
Saturated fatty acids 15.0 13.1 13.1 13.7 ± 1.1 8.9 13.2 8.3 10.1 ± 2.7
 Hexadecanoic acid (palmitic acid C16:0) 3.0 0.3 3.4 2.2 ± 1.7 0.9 nd 0.2 0.6 ± 0.5
 Octadecanoic acid (stearic acid C18:0) 1.0 0.4 0.6 0.7 ± 0.3 0.8 1.6 1.0 1.1 ± 0.4
 Eicosanoic acid (arachidic acid C20:0) 6.1 8.9 5.6 6.9 ± 1.8 1.8 1.2 1.2 1.4 ± 0.3
 Docosanoic acid (behenic acid C22:0) 2.0 1.4 1.4 1.6 ± 0.3 2.7 4.4 2.5 3.2 ± 1.0
 Tricosanoic acid (tricosylic acid C23:0) 0.9 0.5 0.9 0.8 ± 0.2 0.7 0.5 0.7 0.6 ± 0.1
 Tetracosanoic acid (lignoceric acid C24:0) 2.1 1.7 1.2 1.7 ± 0.5 2.11 5.6 2.7 3.5 ± 1.9
Unsaturated fatty acids 6.2 4.6 4.5 5.1 ± 1.0 4.5 6.8 5.1 5.5 ± 1.2
 9-Octadecadienoic acid (oleic acid C18:1) 4.0 2.4 2.3 2.9 ± 1.0 2.9 5.5 4.2 4.2 ± 1.3
 9.12.15-Octadecatrienoic acid (linolenic acid C18:3) 1.2 1.2 1.2 1.2 ± 0.0 nd nd nd nd
 10.16-Dihydroxyhexadecanoic acid (C16:2) 1.0 1.0 1.0 1.0 ± 0.0 1.6 1.3 0.9 1.3 ± 0.4
 Methyl 16-hydroxyhexadecanoate 0.6 0.5 0.5 0.5 ± 0.1 0.8 0.7 0.5 0.7 ± 0.2
 Methyl 18-hydroxy-9-octadecenoate 0.9 nd 0.81 0.9 ± 0.1 nd nd nd nd
Flavonoids 0.2 nd nd 0.1 ± 0.1 3.4 0.1 1.0 1.5 ± 1.7
 Catechine (2R-cis) 0.2 nd nd 0.2 ± 0.0 3.4 0.1 1.0 1.5 ± 1.7
Alkanes 0.3 nd 0.3 0.2 ± 0.2 nd nd nd nd
 Hexacosane 0.3 nd 0.3 0.3 ± 0.0 nd nd nd nd
Sterols 0.9 0.4 0.7 0.7 ± 0.3 0.8 0.7 1.0 0.8 ± 0.2
 β-Sitosterol 0.8 0.4 0.6 0.6 ± 0.2 0.8 0.7 1.0 0.8 ± 0.2
 Stigmast-5-ene 0.1 nd 0.09 0.1 ± 0.0 nd nd nd nd
Lignans 3.0 0.7 2.2 2.0 ± 1.2 nd nd nd nd
 Pinoresinol 3.0 0.7 2.2 2.0 ± 1.2 nd nd nd nd

nd - not detected.