Komponen Kimia Kayu Jati dengan Pertumbuhan Eksentris
Abstract: The objective of
this study is to learn the quality of abnormal woods. The specimens were 10
leaning trees obtained from thinned teak (Tectona grandis L.f.) stand in
Randublatung, Central Java. In each tree, the eccentric growth parts were
isolated, then wood meal sample was drilled at the outer heartwood part of both
maximum annual-ring width (upper part of leaning stem) and in its opposite
side, which had minimum annual-ring width (lower part of leaning stem). The
wood meals were ground to size of 40-60 mesh for chemical analysis. Data
analysis by paired t-test showed that no significant difference was found
between the upper and lower parts in ethanol-benzene extractive content
(4-12%), hot-water soluble content (1-3%), ash content (0.73%) and acid soluble
lignin content (0.7-1.4 %) . By means of Gas Chromatography (GC) and Gas
Chromatography-Mass Spectrometry (GC-MS), no striking difference was also
observed in the levels of major components of ethanol-benzene extracts. On the
other hand, in Klason lignin content, the wood with widest ring consistently
showed a higher content (32-35 %) than that with narrowest ring (29-33 %).
These findings indicated that the eccentricity is more related to cell wall
components than to secondary metabolites. Further, there is no indication with
regard to the formation of tension wood.
Penulis: Ganis Lukmandaru
Kode Jurnal: jpkehutanandd110003
