Pengaruh Hot Water Extraction terhadap Sudut Kontak Octomeles sumatrana dan Duabanga moluccana dan Kaitannya terhadap Zat Ekstraktif dan Struktur Anatomi Kayu
Effect of Hot Water Extraction on Contact Angle of Octomeles sumatrana and Duabanga moluccana Woods and Its Correlation to the Extractive Content and Anatomical Structure
DOI:
https://doi.org/10.24259/perennial.v21i2.44044Kata Kunci:
Binuang bini (Octomeles sumatrana), Binuang laki (Duabanga moluccana), Ekstraksi air panas, Sudut kontakAbstrak
Binuang bini (Octomeles sumatrana) dan binuang laki (Duabanga moluccana) merupakan jenis cepat tumbuh dan tumbuhan pioneer yang berpotensi dikembangkan sebagai engineered wood products. Akan tetapi, penelitian sebelumnya membuktikan bahwa kedua jenis kayu tersebut memiliki nilai sudut kontak yang tinggi dan diduga disebabkan karena kandungan zat ekstraktif serta Tingkat keasaman kayu yang tinggi. Oleh karena itu, penelitian ini bertujuan untuk mengkaji pengaruh pemberian perlakuan pendahuluan hot water extraction (HWE) untuk mengeliminasi faktor penghalang tersebut. Hasil penelitian membuktikan bahwa secara statistik perlakuan pendahuluan HWE signifikan menurunkan sudut kontak kayu binuang bini tetapi tidak untuk kayu binuang laki. Perlakuan pendahuluan HWE berdampak pada penurunan kadar zat ekstraktif larut air panas dan degradasi komponen kimia kayu lainnya. Efektivitas perlakuan pendahuluan HWE yang berbeda pada kayu binuang bini dan binuang laki terhadap penurunan sudut kontak kayu dipengaruhi oleh perbedaan kuantitas dan kualitas zat ekstraktif serta perbedaan karakteristik struktur anatomi kedua jenis kayu tersebut.
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