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Han Roliadi
Member of Research and Development Center, Ministry of Forestry Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Energy Materials Science & Nanotechnology Mathematics

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Journal : Jurnal Ilmu dan Teknologi Kayu Tropis

 1 
STUDI PERANAN FUNGI PELAPUK PUTIH DALAM PROSES BIODELIGNIFIKASI KAYU SENGON (Paraserianthes falcataria (L) Nielsen) Study on the Role of White Rot Fungi in Biodelignication of Sengon Wood (Paraserianthes falcataria (L) Nielsen) Rena M. Siagian; Han Roliadi; Sihati Suprapti; Sri Komarayati
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 1, No 1 (2003): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (202.814 KB) | DOI: 10.51850/jitkt.v1i1.329

Abstract

Pulp and paper mills utilizing wood materials in Indonesia mostly employ the sulphate (Kraft) process, due to its superiority. Yet it offers unfortunate weakness, among which is its contribution to the environmental pollution. Hence, it is necessary to develop appropriate technique but environmentally friendly to deal with the environmental concerns, such as biopulping process which incorporates fungi) activities to degrade lignin in wood. This experiment was mainly aimed at procuring particular fungi isolates able to do so effectively and maximally on the lignin in sengon wood (Paraserianthes falcataria (L.) Nielsen), but minimally destroying the holocellulose.            The results revealed that the participation of fungi could significantly decrease lignin and extractive in sengon wood. The most substantial decrease in lignin brought about by three particular fungi isolates in decreasing order, i.e. HHB 252 (up to 20.22%), HHB 302 (20.45%) and Schizophyllum commune (21.48%). Meanwhile, the lowest decrease in holocellulose was due to the use of HHB 259 (up to 73.23%), followed by Schizophyllum commune (71.9%), and HHB 252 (71.82%).             To sum-up, the best-performance fungi in the biodelignification of sengon wood was HHB 252, followed by HHB 302 and Schizophyllum commune isolates. Those three fungi isolates decreased substantially the lignin content, but concurrently brought about minimum degradation on the holocellulose, as indicated by their respective ratio of lignin to holocellulose contents, i.e. 0.282, 0.289 and 0.299.
Pemanfaatan Kayu Manis (Cinnamomun burmanii) Berdiameter Kecil untuk Balok I-joist sebagai Bahan Konstruksi (Utilization of Small-Diameter Cinammon Logs for I-joist Beam as Construction Material) Abdurachman Abdurachman; Han Roliadi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 8, No 2 (2010): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.583 KB) | DOI: 10.51850/jitkt.v8i2.221

Abstract

Wood-processing industries currently face the limitation of large-diameter wood logs, due to their scarce stocks from natural forests. Wood from plantation forests can deserve consideration as an alternative raw material for those industries. However, plantation-forest woods are usually of small-diameter sizes and lower qualities compared to those of natural forest woods. One solution to deal with those problems is the conversion of plantation-forest woods into the reconstituted wood products, which can be arranged to various desirable sizes, and more beneficial for construction and other purposes. Hereby, the manufacturing of reconstituted wood products, called I-joist beam was tried from small-diameter plantation forest wood species, i.e. cinnamon wood (Cinnamomum burmanii). The assembling used phenol-resorcinol-formaldehyde adhesive. Mechanical properties of the I-joist beam with vertical-gluing profiles between laminae in the web portion were lower than those of the corresponding small-sized defect-free solid wood, but higher than those of I-joist with horizontal-gluing profiles between laminae in the web as well as the horizontally laminated beam made-up of cinnamon wood-laminae. The angle between wood ray and gluing line (plane) correlated negatively with the strengths of I-joist beam. These results indicated the positive prospect of manufacturing I-joist beam from small-diameter cinnamon wood for construction material.
Co-Authors Abdurachman Abdurachman ADI SANTOSO Arum Anggraini Buharman Buharman Dian Anggraini Indrawan Effendi Tri Bahtiar Gamma Irca Pradikta Gustan Pari Khaswar Syamsu Liesbetini Haditjaroko Lisna Efiyanti Mohamad Iqbal Naresworo Nugroho R. Sudradjat Rena M Siagian Rena M. Siagian Rentry Augusti N Rosi M. Tampubolon Rossi Margareth Tampubolon Sihati SUPRAPTI Sri Komarayati