Radial distribution of quinones in plantation teak (Tectona grandis L.f.)

Ganis Lukmandaru; Koetsu Takahashi

doi:doi:10.1051/forest/2009051

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Volume 66 / No 6 (September 2009)

Ann. For. Sci., 66 6 (2009) 605

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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

Mean of 5 trees (8 and 51 years old) and 4 trees (30 years old), with the standard deviation in parentheses. The same letters in the same row are not significantly different at p < 5% by Duncan’s test. nd = Spectroscopically not detected; tr = trace (detected, the value < 0.01 %).