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Jurnal Ilmu dan Teknologi Kayu Tropis
ISSN : -     EISSN : 16933834     DOI : -
Core Subject : Agriculture,
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.
Arjuna Subject : -
Articles 311 Documents
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) Anna, Nelly; Siregar, Iskandar Z; Supriyanto, Supriyanto; Karlinasari, Lina; Sudrajat, Dede J
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
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Abstract

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.Keywords: growth, heritability, jabon, physical properties, pilodyn penetration
Physical and Chemical Characteristic of Albizzia Sawdust as a Matrix in the Decomposition of Human Excreta Using Bio-toilet Triastuti, Jovita; Sintawardani, Neni; Irie, Mitsuteru
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 6, No 1 (2008): Jurnal Ilmu dan Teknologi Kayu Tropis
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Abstract

Bio-toilet (BT) is a dry closet that using sawdust as an artificial soil matrix due to the benefit characteristics of sawdust it self. In this study, Albizzia (Paraserianthes Falcataria) sawdust from a local sawmill was used as matrix in the decomposition of human waste in BT system.  The study was carried out at Pesantren Daarut Tauhiid Bandung for about 4 months using BT type S-50 from Seiwa Denko Ltd, Japan. The human body waste from 25 students was loaded daily. Mixer was setting to run-on automatically with 15 minutes interval for 2 minutes; 1 minute to clockwise and counter-clockwise rotation respectively. Exhaust fan was operated continuously for aeration. Heater was run-off at first 2 months, and run-on at last 2 months. The physical and chemical properties of Albizzia sawdust, before (fresh) and after process (residual) were observed. Data showed that friction both among sawdust particles and between sawdust and screw material caused the particle size reduction due to the mechanical effect of mixing. Bulk density of sawdust increased (0.187 > 0.109 g/ml). Water retention increased from 2.09 to 2.55 ml/g. C/N ratio decreased significantly, from 200:1 to 27:1. Ash content of residual is higher than fresh sawdust (7.11 > 3.32%). The extractive compounds increased (3.68 > 1.8%). Lignin content tends increase, from 27.71 to 29.74% DM, meanwhile cellulose content decrease. Mineral P, K, and Na increased significantly during process. It was concluded Albizzia sawdust can be used as matrix in BT, but the residual should be replaced with fresh after 4 months usage due to maintain of BT performance.  Residual sawdust has a good point as soil fertilizer due to its water retention, air capacity, and the high NPK content that would be valuable for plant.
Kualitas Arang Aktif Kayu Gelam dan Aplikasinya untuk Meningkatkan Kualitas Air (Activated Charcoal Quality of Gelam Wood and Its Application to Improve Water Quality) Alpian, Alpian; Prayitno, TA; Sutapa, JP Gentur; Budiadi, Budiadi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 8, No 2 (2010): Jurnal Ilmu dan Teknologi Kayu Tropis
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Abstract

Gelam (Melaleuca cajuputi) is the dominant tree species grown in swamp forests, especially in tidal areas in Central Kalimantan. Gelam wood has been used for construction and biomass energy, which is due to high density of wood. Previously studies reported that the quality of charcoal from wood stems of Gelam was better than that from roots, fruits, flowers, branches and leaves. The study was to investigate the characteristics of activated charcoal from wood stem of gelam which taken from different site and growth stages of the tree, and its utilizations for water quality improvement. The parameters observed were yield, moisture content, volatile matter content, ash content, fixed carbon, absorption of benzene, iodine and methylene blue. The Gelam wood from different growth site and stage of trees (saplings, poles, trees) can be used as raw material for activated charcoal production. The quality of activated charcoal fulfilled the quality requirements of technical activated charcoal (SNI 06-3730-1995), activated charcoal for the purification of edible oil (SNI 06-4262-1996) and drinking water (SNI 06-4253-1996), except for absorption of benzene. Generally, the quality of water treated by activated charcoal increased and fulfilled the requirements of clean water standards (Departemen Kesehatan 1990).
PEMANFAATAN KULIT GEMOR (Alseodaphne sp) SEBAGAI BAHAN UNTUK PEMBUATAN ANTI NYAMUK BAKAR The Possible Utilization of Gemor (Alseodaphne sp.) Bark as Material for the Manufacture of Anti Mosquito Agent Zulnely, Zulnely; Martono, D.
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 1, No 1 (2003): Jurnal Ilmu dan Teknologi Kayu Tropis
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Abstract

Gemor (Alseodaphne sp.) plants belong to the Lauraceae family and grow abundantly in particular Indonesian regions, predominantly South Kalimantan and Central Kalimantan.  It has been known that the bark portion of gemor plants can be used as an effective stuff or material to repel the mosquitoes (i.e. anti-mosquito agent).In this research, a laboratory-scale trial on the manufacture of anti-mosquito agent was conducted by diversifying its manufacturing formulations.  As such, two kinds of formulae were prepared.  The first formula (designated as A) consisted of the gemor bark (20 percent), which has been fragmented into flour, wood flour (60 percent), coconut-shell flour (10 percent), and wood flour of Cassiavera sp. (10 percent), and cassava flour (3 percent).  Meanwhile, the second formula (B) contained gemor bark flour (25 percent), wood flour (50 percent), coconut-shell flour (10 percent), Cassiavera wood flour (12 percent), and cassava flour (3 percent).  During the trial, in addition to varying or diversifying the formulation,  the manufacturing process (i.e. cooking) was also conducted in two different durations, i.e. 45- and 65-minutes.  Afterwards, the resulting anti-mosquito agents were tested of their efficacy through the burning process (i.e. the ease to get ignited, flaming duration, and efficacy to repel the mosquitoes).  Besides, assessing the qualities of the anti-mosquito agent was also conducted not through the burning process (i.e. the resistance of the agent to breakage, crumbling, and other destructive mechanical actions).The results revealed that the anti-mosquito agents manufactured using the two kinds of formulae (A and B) turned out to have almost similar characteristics, i.e. the ease to get ignited, flaming (burning) duration, and mosquito-repelling efficacy.  Meanwhile, the agent resulting from formula B disclosed better resistance to damage (crumbling/breakage) due to mechanical actions than the one from formula A. Formulation A and B are to use anti mosquito agent.  
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) Murda, Rio A; Nawawi, Deded S; Maulana, Sena; Maulana, Muhammad I; Park, Se-Hwi; Febrianto, Fauzi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
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Abstract

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.Keywords: bamboo, chemical components, steam modification, strand,
Peningkatan Sifat Papan Partikel Sengon dengan Perlakuan Perendaman Air Dingin (Improvement the Propoerties of Particleboard Made from Sengon with Cold Water Immersion Treatment) Marwanto, Marwanto; Maulana, Sena; Maulana, Mohammad I; Wistara, Nyoman J; Nikmatin, Siti; Febrianto, Fauzi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
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Abstract

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.Keyword: cold water immersion, mangium, particleboard, sengon
Perbandingan Sifat Bahan Baku dan Pulp Kraft Geronggang (Cratoxylon arborescen) Alam dan Tanaman (Comparison the Properties of Raw Material and Kraft Pulp from Nature and Plantation of Geronggang Wood (Cratoxylon arborescen)) Aprinis, Yeny; Akbar, Opik T; Rizqiani, Kanti D
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
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Abstract

Geronggang (Cratoxylum arborescen) is one of local wood in Riau peatlands has potential as raw material for pulp. This study aims to compare properties of raw material and kraft pulp from nature and plantation of geronggang wood. The parameters observed were chemical properties, fibers dimension, and pulp properties. The comparison of the both geronggang properties were analyzed using T test. The results indicated that both geronggang wood nature and plantation showed similar chemical properties in term of extractives, cellulose, and hemicellulose, and fiber dimensions except lignin content. Kraft properties of both geronggang woods also have similar results of yield and Kappa number, except lignin content.Keywords: chemical properties, geronggang, nature, plantation, pulp properties
Evaluasi terhadap Stimulan Ethephon dalam Penyadapan Pinus merkusii (Evaluation on Ethephon Stimulant to Pinus merkusii Tapping) Lukmandaru, Ganis; Sunarta, Sigit; Listyanto, Tomy; Kasmudjo, Kasmudjo; Pujiarti, Rini; Widyorini, Ragil
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
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Abstract

The aim of this study was to find out the effect of Ethephon, an ethylene releasing compound, in a combination with sulfuric acid resin production Pinus merkusii. The tested stimulants were ETRAT; SR4; 20% sulfuric acid; 20% sulfuric acid - Ethephon 2%; 3.3% sulfuric acid – 4.1% Ethephon; and sulfuric acid – 8.3% Ethephon. Trees without stimulant spraying were the controls. The results showed that for daily production, the first-day observation gave the highest value but decreased drastically after second-day observation in a varied degree depent on the stimulants. On the basis of accumulated production, the addition of Ethephon in a high or low level of sulfuric acid concentration exhibited significantly higher resin production compared to that of ETRAT; SR4; and 20% sulfuric acid stimulants as well as control trees. It increased resin production by 98.0-150.6% compared to control trees in class age of VII and increased by 140.9-227.1% in class age of IV stands. Moderate significant correlations (r=0.65) were observed between the values of resin production and tree diameter (controls) as well as between the values of resin production and tree diameter of trees treated by sulfuric acid stimulants (r=0.65-0.82).Keywords : class age, ethylene, quarre, resin production, tree diameter
Aktivitas Antioksidan dan Tabir Surya Ekstrak Daun Gyrinops verstegii (Antioxidant activity and Sunscreen of Gyrinops versteegii Leaf Extract) Wahyuningrum, Maeda; Sari, Rita K; Rafi, Mohamad
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
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Abstract

The aim of this study was to determine the yield and phytochemicals, antioxidant activity, and sunscreen of the Gyrinops versteegii leaf extracts. The leaf simplicia was extracted using soxhletation method with multilevel polarities of solvent (n-hexane, ethyl acetate, and metanol). The analysis of phytochemical extracts has been carried out the qualitatively and quantitatively. The antioxidant activity testing was performed in vitro through the effective concentration (EC50) extract in capturing DPPH radicals. Sunscreen activity has been done through testing sun protection factor (SPF). The result showed that the yield of n-hexane extract, ethyl acetate, and methanol extracts were 7.83, 5.46, and 6.77% respectively. The phytochemical analysis showed that the ethyl acetate and methanol extracts were strongly detected containing antioxidant compounds such as p-hydroquinone, flavonoid, and tannins with the total phenol of the ethyl acetate and methanol extracts were 3.40 and 4.27% respectively. The n-hexane extract detected contains weakly the antioxidant compounds with the total phenol was 0.45%. The methanol extract is the highest antioxidant activity (EC50 14.46 μg ml-1) and has ultra sunscreen activity (SPF>15).Keywords: antioxidant, extractive, G. versteegii, sunscreen
Surian (wood as an Alternative Material for Bonded Wood Products in the Future (II): Laminated Veneer Lumber (LVL)) Alamsyah, Eka M; Karliati, Tati
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 2 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
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Abstract

The objective of this study was to evaluate the performance of laminated veneer lumber (LVL) made from surian (Toona sinensis Roem) compared to sengon (Paraserianthes. falcataria L Nielsen) and rubber (karet) (Hevea brasiliensis Muell) wood which bonded with the common phenol formaldehyde (PF) and urea formaldehyde (UF) adhesives. LVL was assembled from 7 plies veneer with the final moisture content (MC) of veneer is about eight percent. The parameters of LVL i.e., MC, density, percentage of delamination, modulus of rupture (MOR), modulus of elasticity (MOE), horizontal shear strength (flat and edge direction) and formaldehyde emission were evaluated according to Japan Agricultural Standard (JAS). The result showed that delamination ratio value was zero percent. The most interesting finding was the value of formaldehyde emission of both PF and UF-surian LVL were lower than PF and UF rubber or sengon LVL due to their F4S classification of JAS. Values of MOR and horizontal shear strength both PF and UF-surian LVL was lower than rubber LVL, however it was higher than sengon LVL. The physical and mechanical properties of surian LVL met the JAS requirement.Key words: formaldehyde emission, laminated veneer lumber, physical and mechanical properties, Toona sinensis.

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