Abstract

ABSTRACT The other properties of medang sereah (Litsea sp.) wood that need to be identified are the chemical properties of wood based on the part (terrace and sapwood) and the position of the trunk (base, middle, and end). The purpose of identifying the nature of this lemongrass medang wood will facilitate the introduction of lemongrass medang wood types with other types of medang wood. In addition, it will facilitate the process of working and the purpose of using these types of wood further according to their characteristics because the identification of wood properties is an initial process in determining the allocation of wood utilization. The levels of holocellulose, alpha-cellulose, hemicellulose in the core have relatively greater levels than the sapwood. The hemicellulose content at the base has a relatively higher value compared to the end and middle of the medang citronella log. The lignin content of the sapwood part has a lower tendency compared to the terrace. The results of the analysis also showed that the wood at the end of the trunk had a fairly high lignin content compared to the base of the trunk. Keywords: Litsea sp., wood position, wood chemical, terrace and sapwood ABSTRAK Sifat kayu medang sereh lainnya yang perlu diidentifikasi yaitu sifat kimia kayu berdasarkan bagian (teras dan gubal) dan posisi batangnya (pangkal, tengah, dan ujung). Tujuan mengidentifikasi sifat kayu medang sereh ini, maka akan mempermudah dalam pengenalan jenis kayu medang sereh dengan jenis kayu medang lainnya. Selain itu, akan mempermudah proses pengerjaan dan tujuan penggunaan jenis kayu tersebut lebih lanjut sesuai karakteristiknya karena identifikasi sifat kayu merupakan suatu proses awal dalam menentukan alokasi pemanfaatan kayu. Pengujian komponen kimia mengacu pada standar ASTM. Kadar holoselulosa, alpha-selulosa, hemiselulosa bagian teras memiliki kadar relatif lebih besar dibandingkan bagian gubal. Kadar hemiselulosa pada bagian pangkal memiliki nilai yang relatif lebih tinggi daibandingkan bagian ujung dan tengah batang kayu medang sereh. Kadar lignin bagian gubal memiliki kecenderungan lebih rendah dibandingkan dengan bagian teras. Hasil analisis juga menunjukkan bahwa kayu dibagian ujung batang memiliki kadar lignin yang cukup tinggi dibandingkan bagian pangkal batang. Kata kunci: medang sereh, posisi batang, kimia kayu, bagian teras dan gubal

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