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Abstract

The quality of wood can be observed, among other things, from its specific gravity and chemical composition. Lignin, in addition to being the second largest component in the chemical properties of wood, is also the most resistant component to degradation from heat compared to other chemical components of wood. The purpose of this study is to determine and compare the lignin content and specific gravity of puspa wood (Schima wallichii (DC.) Korth) and laban wood (Vitex pubescens Vahl). The variables observed were specific gravity, measured using the Vintila (1939) method in Smith (1995), and lignin (%) using the TAPPI Test Method T: 222. The measurement results were analyzed using a t-test. The t-test results for lignin content indicate that the average lignin content of the puspa heartwood (24%) and sapwood (26.53%) is not significantly different from the lignin content of laban sapwood (32.07%). Meanwhile, the t-test for the mean values of the wood density of puspa wood in the heartwood and sapwood, 0.53 and 0.54 respectively, compared with the sapwood of laban wood (0.69) gave significantly different results. Thus, laban wood is better than puspa wood if used as a firewood block.


 


Key word: Specific gravity, lignin, firewood block, wood quality

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Copyright (c) 2026 Nani Nuriyatin, Reynaldi Alfathullah, Silsia

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