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Jurnal Ilmu dan Teknologi Kayu Tropis

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Published by Masyarakat Peneliti Kayu Indonesia

ISSN : - EISSN : 16933834 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Jurnal ini mempublikasikan artikel asli baik penelitian dasar maupun terapan di bidang ilmu pengetahuan dan teknologi kayu, bahan berlignoselulosa bukan kayu, hasil hutan lainnya dan industri hasil hutan.

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Articles 316 Documents

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Keragaman Genetik Pertumbuhan dan Hubungannya dengan Penetrasi Pilodyn pada Uji Provenansi-Keturunan Jabon (Neolamarkcia cadamba (Roxb) Bosser) di Parung Panjang, Bogor) (Genetic Variation of Growth and Its Relationship with Pilodyn Penetration on Provenance-Progeny Trial of Jabon (Neolamarkcia cadamba (Roxb) Bosser) at Parung Panjang, Bogor) Nelly Anna; Iskandar Z Siregar; Supriyanto Supriyanto; Lina Karlinasari; Dede J Sudrajat
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Jabon (Neolamarkcia cadamba (Roxb) Bosser) is a fast growing and preferred species as material for various wood industries. However, the growth and quality information of its wood is still limited. This study aims to assess the characteristics of growth, physical properties of wood, genetic parameters of growth and physical properties of wood, and its relationship with pilodyn penetration on provenance-progeny trial of jabon in Parung Panjang, Bogor. Measurement of growth characteristics was performed on height and diameter at breadst height (DBH), whereas the physical properties of wood (density, specific gravity, and moisture content) were performed using core samples (destructive methods) and density estimation with pilodyn (nondestructive method). Statistical analysis explains that there are significant differences between provenances in height, diameter, pilodyn penetration, density, and specific gravity, except for moisture content. The mean of plant survival percentage of 36 months old jabon was 52.8%. The relationship between growth character and the physical properties of wood with pilodyn penetration is negative and weak, except in moisture content, positive but weak. The estimation of individual heritability value ranges from 0.011 to 0.183, while heritability of the family ranges from 0.017 to 0.308.

Ketahanan Oriented Strand Board Bambu Betung dengan Perlakuan Steam pada Strand terhadap Cuaca (Durability of Oriented Strand Board Prepared from Steam -treated Betung Bamboo to Natural Weathering) Sena Maulana; Muhammad QA Damanik; Marwanto Marwanto; Muhammad I Maulana; Adesna Fatrawana; Ihak Sumardi; Nyoman J Wistara; Fauzi Febrianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 17, No 1 (2019): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Penelitian ini bertujuan untuk mengevaluasi ketahanan oriented strand board (OSB) dari bambu betung (Dendrocalamus asper) (BOSB) dengan perlakuan steam pada strand terhadap cuaca. Strand diberi perlakuan steam pada suhu 126 ºC di bawah tekanan 0,14 MPa selama 1 jam. Tiga lapis BOSB dibuat dengan kerapatan target 0,7 g cm-3 yang direkat dengan perekat fenol formaldehida (PF) dengan konsentrasi 8%. Parafin ditambahkan sebanyak 1% dari berat kering oven strand. Bamboo oriented strand board dipaparkan pada cuaca terbuka di Dramaga, Kabupaten Bogor Jawa Barat (6°34’15.72’’Selatan 106°44’17.30’’Timur). Evaluasi sifat fisis dan mekanis BOSB sebelum dan sesudah dipaparkan di udara selama 2 dan 3 bulan dilakukan berdasarkan standar JIS A 5908:2003. Penentuan nilai nisbah retensi MOE dan MOR dilakukan dengan membandingkan nilai MOE dan MOR sebelum dan sesudah pemaparan. Hasil penelitian menunjukkan bahwa perlakuan steam pada strand dapat meningkatkan stabilitas dimensi dan sifat mekanis BOSB. Pemaparan BOSB pada cuaca terbuka dapat menurunkan stabilitas dimensi dan kekuatan BOSB. Ketahanan BOSB dengan perlakuan steam pada strand terhadap pemaparan alami lebih tinggi dibandingkan dengan tanpa perlakuan steam.

Strategi Pengembangan Usaha pada Industri Kayu Gergajian Melalui Pendekatan SWOT dan IFAS-EFAS Analysis (Business Development Strategy in Sawn Timber Industry Through the SWOT Approach and IFAS-EFAS Analysis) Makkarennu Makkarennu; Tri Astuti; Ridwan Ridwan
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 17, No 1 (2019): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Sawn timber industry is one of the growing timber industries in Indonesia; however, this industry is faced with several problems, including lack of raw materials, product quality, in-efficiency and similar industry competition. The purpose of this study was to determine the quadrant position in the SWOT diagram of sawmill lumber industry and determine the most appropriate strategy in accordance with the position of the quadrant on the SWOT diagram. In-depth interviews method was select to measure strengths; weaknesses, opportunity and threat included senior manager operational and employees of the PT. Madani Cahaya utama. Data were analyzed using SWOT in which the scores of internal factor (Internal Factor Analysis Summary-IFAS) and external factor (External Factor Analysis Summary-EFAS) were calculated. The results showed that score of internal factor and external factor were greater than 2. Hence, the position of SWOT for the small sawmill was located in quadrant 1, suggesting that a company has strength to take an advantage of the existing opportunities.

Perubahan Kadar Komponen Kimia pada Tiga Jenis Bambu Akibat Proses Steam dan Pembilasan (Chemical Components Changed in Three Bamboo Species Treated by Steaming and Washing Processes) Rio A Murda; Deded S Nawawi; Sena Maulana; Muhammad I Maulana; Se-Hwi Park; Fauzi Febrianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Bamboo has good prospects for composite raw materials such as for Oriented Strand Board (OSB) product. Previous research has shown that steam and rinsing with water and 1% NaOH solution treatments of strand improved the properties of OSB, which might be caused by changing in the chemical components content of bamboo. This study aimed to determine the chemical components content change of sembilang bamboo (Dendrocalamus giganteus Munro), black bamboo (Gigantochloa nigrocillata Kurz.), and tali bamboo (G. apus (Bl.ex Schult.f.)) due to steam and rinsing treatment. The chemical components of bamboo were analyzed referring to the Technical Association of the Pulp and Paper Industry standards (TAPPI). The results showed that the most significant changes in the chemical components content of bamboo occured for holocellulose, hemicellulose, extractive contents, and pH values. The decreasing of hemicellulose, extractive contents, and increasing pH values due to the steam and 1% NaOH rinsing treatment may improve the adhesion quality of OSB.

Aktivitas Antidiabetes Ekstrak Etanol Jabon (Anthocephalus cadamba) (Antidiabetic Activity of Jabon (Anthocephalus cadamba) Ethanol Extracts) Laela N. Anisah; Wasrin Syafii; Rita K. Sari; Gustan Pari
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 13, No 2 (2015): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Diabetes mellitus (DM) merupakan penyakit gangguan metabolik yang menjadi masalah utama kesehatan di dunia termasuk Indonesia. Penelitian ini bertujuan untuk menetapkan rendemen zat ekstraktif tanaman jabon, aktivitas antidiabetesnya secara in vitro terhadap enzim -glukosidase serta menganalisis kandungan kimia ekstrak teraktifnya Ekstrak jabon dihasilkan dari proses maserasi dengan etanol 95% pada berbagai bagian pohon (daun, kulit, kayu). Hasil penelitian menunjukkan bahwa kadar ekstrak tertinggi terdapat pada bagian daun (16,5%), diikuti bagian kulit (4,62%) dan kayu (2,04 %). Berdasarkan uji aktivitas penghambatan enzim -glukosidase, ekstrak etanol daun jabon merupakan ekstrak teraktif dengan nilai IC50 7,24 µg ml-1 (sangat aktif), sedangkan ekstrak etanol bagian kulit dan kayu tergolong tidak aktif (IC50 > 100 µg ml-1). Hasil uji fitokimia secara kualitatif menunjukkan kelompok senyawa yang terkandung di dalam ekstrak etanol daun jabon adalah flavonoid, hidroquinon, saponin, tannin, alkaloid, terpenoid dan steroid yang diduga berperan dalam menghambat aktivitas enzim -glukosidase. Analisis GCMS mendeteksi adanya senyawa fenolik asam quinat dan katekol serta turunan asam lemak (asam heksadekanoat metil ester) yang diduga memiliki aktivitas antidiabetes. Berdasarkan hasil tersebut, ekstrak etanol daun jabon sangat berpotensi sebagai sumber obat andiabetes.

Sifat Fisis dan Mekanis Papan Partikel Hibrida dari Kayu Cepat Tumbuh dan Bambu dengan Perlakuan Perendaman Panas ( Physical and Mechanical Properties of Hybrid Particleboard from Fast Growing Wood Species and Bamboo with Heat Immersion Treatment) Soleh Muhamad; Marwanto Marwanto; Muhammad I Maulana; Sena Maulana; Adesna Fatrawana; Wahyu Hidayat; Rita K Sari; Fauzi Febrianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 17, No 1 (2019): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The purpose of this study was to evaluate the physical and mechanical properties of hybrid particleboard made from combination of sengon wood (Falcataria moluccana), jabon wood (Anthocephalus cadamba), and betung bamboo (Dendrocalamus asper) with hot water immersion treatment. Pretreatment with hot water immersion was carried out in water bath at 80 ºC for 2 hours. The boards were made using urea formaldehyde (UF) adhesive with (30x30x0.9) cm3 size and 0.6 g cm-3 target density. Physical and mechanical properties of hybrid particleboards were evaluated based on JIS A 5908-2003 standard. The results showed that the combination treatment with bamboo particles can increase the mechanical properties and dimensional stability of the particleboards especially when combined with jabon particles. Hot water immersion treatment can improve the mechanical properties (MOE, MOR and IB) of hybrid particleboards. However, hot water immersion treatment decreased dimensional stability (thickness swelling and water absorption) of hybrid particleboards.

Peningkatan Sifat Papan Partikel Sengon dengan Perlakuan Perendaman Air Dingin (Improvement the Properties of Particleboard Made from Sengon with Cold Water Immersion Treatment) Marwanto Marwanto; Sena Maulana; Muhammad I Maulana; Nyoman J Wistara; Siti Nikmatin; Fauzi Febrianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objectives of this research is to evaluate the physical and mechanical properties of particle board made from sengon and mangium woods treated with cold water immersion. Particles of sengon and mangium immersed in cold water for 24 hours. The particles of sengon and mangium are combined with a ratio of 100: 0; 0: 100; 75:25; and 50:50. Particle boards are made in size (30x30x0,9) cm3 with target densities of 0.7 g cm-3. The particle board was binded with methylene diphenyl diisocyanate (MDI) adhesive at 10% content and hot press at 140 °C with 25 kgf cm-2 for 7 minutes. The physical and mechanical properties of particle board are evaluated according to JIS A 5908-2003 standard. The physical and mechanical properties of particle board were much affected by particle combination and cold water immersion treatment. The physical (i.e density, moisture content, water absorption (WA), and thickness swelling (TS)) and mechanical properties (ie. modulus of elasticity (MOE), modulus of rupture (MOR), and internal bonding (IB)) were evaluated. The results showed that cold water immersion improved dimensional stability (WA and TS) of particle board obtained. However, some mechanical properties decreased.

Sifat Mekanis Bahan Kayu pada Rumah Tradisional Batak Karo (Mechanical Properties of Timber Materials on Batak Karo Traditional House) F. Dona Artha; Yulianto P Prihatmaji
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 17, No 1 (2019): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Batak Karo Traditional House in North Sumatra, known as Siwaluh Jabu used pengki (Ulmus lanceifolia), ingul (Toona sureni), haudolok (Syzygium sp.), and simartolu (Schima sp.) woods. Evaluation mechanical properties of wood with compression, three-point bending, four point bending, and four point shear test was performed to determine the compressive strength, MOR, shear strength, MOE, and shear modulus (G). To determine the differences of mechanical properties between Batak Karo and Java wood, teakwood (Tectona grandis) and Jackfruit wood (Artocarpus heterophyllus) are selected as a control specimen. The value of MOE and yield stress have strong relationship with density. The higher the density resulted in the higher MOE and yield stress. MOE, MOR, and G in the bending test have not strong relationship with density. The value of MOR and G, teakwood from Java has similar mechanical properties to pengki wood, while nangka (Artocarpus heterophyllus) wood has similar mechanical properties to haudolok wood. Shear strength has a weak relationship with the density. In terms of shear strength, teak wood has similar mechanical properties to pengki wood, while nangka wood has similar mechanical properties to haudolok wood.

Pengaruh Suhu dan Tekanan Uap Air terhadap Fiksasi Kayu Kompresi dengan menggunakan Close System Compression Temperature and Steam Pressure Dependency on the Fixation of Compressed Wood by Close System Compression Yusuf Amin; Wahyu Dwianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 4, No 2 (2006): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

It is known that compression wood by heat treatment needs approximately 20 hours at 180ºC to attempt the permanent fixation of compressive deformation. On the other hand, even the permanent fixation of compressive deformation by steam treatment is reached in 10 minutes at the same temperature, this method needs expensive apparatus and inapplicable for large wood dimensions. These both problems can be solved by Close System Compression (CSC) method. CSC is a method to press the wood inside an airtight seal chamber, which is placed between the two hot press plates. Wood moisture contents, which evaporate due to heat from hot press, are trapped inside the CSC and produce steam. The wood species used in this research was Randu (Bombax ceiba. L) with dimensions of 2 cm (L) x 2 cm (T) x 3 cm (R). The wood specimens were compressed into 2 cm in radial direction inside the CSC at 140ºC, 160ºC, and 180ºC for 10 min, 20 min and 30 min. They were compressed in air-dried, water saturated and steam saturated conditions, because it was predicted that moisture content of wood and steam pressure, which was produced inside the CSC has significantly effects on the fixation of wood, beside the temperature.The result shows that moisture content of the wood has an effect on the decreasing of recovery of set. However, it was needed 180ºC temperature and 10 kg/cm2 steam pressure to attempt the permanent fixation. Therefore, it was necessary to add water to produce the steam pressure besides that was produced from the evaporation of wood moisture content.

Sifat Dasar Tanaman Mengkuang (Pandanus artocarpus Griff) Basic Properties of Mengkuang Plant (Pandanus artocarpus Griff) Hikma Yanti; Wasrin Syafii; Nyoman J Wistara; Fauzi Febrianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 1 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The aim of this research were to determine the extractive, α-cellulose, hemicellulose, lignin, and sugar composition of hemicelluose for raw materials and pulp of mengkuang (Pandanus artocarpus Griff) leave and stem. Delignification was carried out by alkaline process with NaOH 20% and 25% at 170 oC for 4 h. The chemical and physical analyses were done using Fourier Transform Infrared Spectroscopy, X-Ray Diffraction, High Performance Liquid Chromatography, and Scanning Electron Microscopy. The leaves and stem of mengkuang containing extracts of 6.99% and 4.80%, cellulose 35.02% and 40.29%, hemicellulose 33.12% and 31.19%, lignin 29.10% and 26.84%, respectively. The syringyl, guaiacyl, and p-hydroxyphenil composition in mengkuang leaves and steam were 40.00%, 41.82%, 19.24% and 39.81%, 41.82%, 18.37%. The hemicellulose in the leaves and stem consisted of glucose, arabinose, xylose, mannose, rhamnose, and galactose. The highest pulp yield (41.71%) was obtained from pretreatment of 20% NaOH in the stem. Pulp of leaves and stem contained α cellulose, hemicellulose, and total lignin content of 88.19%, 7.95%, 14.36%, and 88.27%, 10.17%, 13.83%. The highest crystallinity of pulp (70.00%) was obtained from the stem at a concentration of 25% NaOH, and the lowest (58.18%) was obtained from the leaves at a concentration of 25% NaOH.

Page 28 of 32 | Total Record : 316

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