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Table I
Contents of major components (% of oven-dry wood) in the ethanol-benzene extract of teakwood trees aged 8, 30 and 51 (radial position).
| Components | Outer sapwood | Inner sapwood | ||||||
|---|---|---|---|---|---|---|---|---|
| 8 y | 30 y | 51 y | 8 y | 30 y | ||||
| Desoxylapachol | nd | tr | nd | tr | nd | |||
| Palmitic acid | 0.04 (0.01)ab | 0.03 (0.007)a | nd | 0.04 (0.04)ab | 0.03 (0.01)a | |||
| Lapachol | tr | tr | tr | 0.01 (0.01)a | 0.01 (0.002)a | |||
| Isodesoxylapachol | tr | 0.02 (0.006)a | 0.01 (0.004)ab | 0.01 (0.01)a | tr | |||
| UN1 | nd | tr | nd | tr | nd | |||
| Tectoquinone | 0.02 (0.02)a | 0.03 (0.02)a | 0.03 (0.004)a | 0.03 (0.02)a | 0.05 (0.03)a | |||
| UN2 | nd | tr | nd | tr | nd | |||
| Squalene | 0.02 (0.02)a | 0.07 (0.01)a | 0.07 (0.03)a | 0.05 (0.02)a | 0.15 (0.04)a | |||
| Tectol | tr | tr | tr | tr | tr | |||
| Components | Outer heartwood | Middleheartwood | Inner heartwood | |||||
| 8 y | 30 y | 51 y | 30 y | 51 y | 30 y | 51 y | ||
| Desoxylapachol | nd | 0.31 (0.48)b | 0.19 (0.15)ab | 0.02 (0.03)a | 0.13 (0.23)ab | 0.03 (0.03)a | 0.03 (0.05)a | |
| Palmitic acid | 0.04 (0.01)ab | 0.07 (0.02)b | 0.08 (0.02)c | 0.03 (0.01)a | 0.04 (0.01)ab | 0.06 (0.01)abc | 0.04 (0.01)ab | |
| Lapachol | 0.10 (0.13)ab | 0.25 (0.26)b | 0.16 (0.32)ab | 0.11 (0.07)ab | 0.03 (0.06)a | 0.10 (0.08)ab | 0.03 (0.04)a | |
| Isodesoxylapachol | 0.05 (0.04)ab | 0.17 (0.10)bc | 0.34 (0.23)d | 0.12 (0.09)bcd | 0.26 (0.11)cd | 0.19 (0.16)bc | 0.15 (0.06)abc | |
| UN1 | nd | 0.01 (0.03)a | 0.01 (0.02)a | 0.03 (0.07)a | 0.12 (0.21)a | 0.17 (0.30)a | 0.19 (0.21)a | |
| Tectoquinone | 0.20 (0.06)bc | 0.16 (0.06)abc | 0.24 (0.22)bc | 0.11 (0.08)ab | 0.27 (0.07)c | 0.19 (0.06)bc | 0.30 (0.16)c | |
| UN2 | nd | 0.06 (0.06)a | 0.21 (0.18)b | 0.02 (0.02)a | 0.09 (0.06)a | 0.03 (0.02)a | 0.02 (0.02)a | |
| Squalene | 0.08 (0.04)a | 0.50 (0.22)bc | 1.08 (0.39)d | 0.42 (0.13)bc | 0.50 (0.18)bc | 0.56 (0.38)c | 0.24 (0.15)ab | |
| Tectol | 0.08 (0.04)a | 0.26 (0.06)bc | 0.47 (0.31)e | 0.19 (0.08)abc | 0.29 (0.14)cd | 0.30 (0.22)cd | 0.16 (0.11)abc | |