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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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Pengujian Sifat Mekanis Kayu Lulu (Celtis latifolia Planc) pada Dua Kondisi Kadar Air asal Manokwari Papua Barat (Testing for Wood Mechanical properties of Lulu (Celtis latifolia Planc) on Two Moisture Contents Collected from Manokwari Papua Barat) Wahyudi Wahyudi; F A Wospakrik; B B Rettob
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 15, No 1 (2017): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The mechanical properties of Lulu (Celtis latifolia Planch.), namely MOE, MOR, compression paralell and perpendicular to grain, respectively, tested on two moisture contents condition. Wood sample was collected from Manokwari Papua Barat. Experiments were designed with factorial nested design experiment. Three factorial treatments were axial of tree, pith to bark of tree, and two moisture contents condition, and four replications were employed. The results show that MOE, MOR, compresion parallel to grain were not significantly different among vertical axis of trees, except for compression perpendicular to grain. From bark to pith, all mechanical wood tested were statistically not different. However, air-dried samples tend to produce higher values for all mechanical wood properties tested. According to Indonesian classification grade, lulu wood (Celtis sp) is classified into class I for MOR, and MOE, whereas class II is for compression parallel to grain. Using its specific gravity, this wood is belonging to the class II or heavy wood. The values of compresion parallel to perpendicular grain is 3.29 higher. In addition, this wood species could be used as alternative contruction housing material , mainly indoor contruction and substituent timbers.Keywords: Lulu (Celtis spp), mechanical properties, moisture contents, Papua Barat

Quality of Charcoal Made from Gelam Wood (Melaleuca cajuputi) Alpian Alpian; Tibertius A Prayitno; Gentur JP Sutapa; Budiadi Budiadi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 2 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Gelam (Melaleuca cajuputi) dominantly found on tidal swamp areas of Central Kalimantan. The study was conducted to investigate the quality of charcoal from stem section based on the grow place, the location of A (flooded of the big tidal, peat thickness is 51-100 cm), location B (unflooded of the big tidal, peat thickness is 101-200 cm), and the stages of tree growth (saplings, poles, and trees). The parameters observed were yield, moisture content, volatile matter content, ash content, carbon content in bound, and calorific value. Charcoal from gelam generally meets the requirement of SNI 01-1683-1989, SNI 06-4369-1996, and Malaysia standards. The average value of the charcoal yield is 28.090-28.545%, the charcoal water content is 4.605-5.413%, the volatile matter content of charcoal is 30.286-34.635%, the ash content of charcoal is 1.840-2.386%, the bonded carbon content of charcoal is 58.37-62.46%, and the charcoal calorific value is 6937.43-7530.09 cal g-1.Key words: biomass energy, calorific value, charcoal, Melaleuca cajuputi

Daya Racun Ekstraktif Kulit Kayu Pucung terhadap Rayap Kayu Kering Cryptotermes cynocephalus Light. Toxicity of Pucung-wood Bark Extractives to Dry Wood Termite Cryptotermes cynocephalus Light Laila Sari; Sutjipto A. Hadikusumo
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 2, No 1 (2004): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Wood preservation using chemicals may pollute the environment. One of the efforts to reduce the effect is using naturally constituents from plants as preservative. The purpose of this study was to observe the effectiveness of soluble fraction in n-hexane, diethyl ether and ethyl acetate of pucung-wood bark after extracted in acetone to dry wood termite attack on paper disc. Pucung-wood (Pangium edule Reinw.) barks were dried and powdered and then cold-extracted with acetone. Thick extract solution in acetone was extracted in n-hexane solution. Soluble fraction in n-hexane was separated. Remained solution was extracted in diethyl ether. Soluble fraction was separated. Remained solution was extracted in ethyl acetate. Soluble fraction in ethyl acetate was separated. Each of soluble fractions was separated from the solution using evaporation method to obtain dry extracts. Each dry extracts were dissolved in each solution to make solutions with concentration of 2.5%, 5%, 7.5% and 10%. Filter paper was used as sample and soaked in the extract solution for 24 hours. After air-dried, filter paper was placed on petri dish and feed to 50 dry termites for 4 weeks. Results shown that 2.5% extract solution in n-hexane or in ethyl ether, or 5% in acetone or 10% in ethyl acetate were effectively inhibiting dry wood termite attack with mortality of 95 ~ 100%.

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
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

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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

Stabilitas Fisikokimia dan Sifat Antipenuaan Kulit Formula Krim Berbahan Aktif Alami (Physicochemical stabilities and Skin Antiaging Properties of Bioaktive-based Cream Formulas) Rita K Sari; Nyoman J Wistara; Deded S Nawawi; Nopen Meisaroh; Ietje Wientarsih; D R Agungpriyono; L N Sutardi; Mawar Subangkit; Vetnizah Juniantito
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 15, No 1 (2017): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The purpose of this study was to analyze the physicochemical stabilities and in vivo antiaging properties of the cream formulas of F1, F2, and F3 which contained the active compound of 0.1% 0.18, and 0.36%, respectively. The active compound was the combination of ethyl acetate fraction of Toona sinensis, Centella asiatica, and Acacia mangium leaf (1:2:1). For physicochemical stability tests (color, odor, acidity, and antioxidant activity), the creams were stored for 21 days in the refrigerator, room temperature, and extreme temperature (±40 ⁰C). For in vivo antiaging test, the mice skin were smeared with cream and UV irradiated for 15 minutes per day. After two and four weeks, the mice skins were biopsied. The results showed that the physicochemical properties of creams stored in the refrigerator were stable. The storage of creams at room and extreme temperature decreased the physicochemical properties. The application of cream formulas on mice skin after two to four weeks were able to increase the thickness of epidermis, but has not been able to increase the collagen skin of mice.Keywords: Acacia mangium, Centella asiatica, ethyl acetate fraction of leaf, physicochemical and antiaging properties of cream, Toona sinensis

Characteristics Ultrasonic Waves Velocity and Anatomical Properties of Tapping Pine Maryam Jamilah; Lina Karlinasari; Sucahyo Sadiyo; Gunawan Santosa
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 13, No 1 (2015): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Non-destructive testing based on sound wave propagation has been used widely to estimate wood quality of standing trees. The aim of this study was to evaluate the characteristics of the sound wave velocity in relation to pine resin productivity and resin intercellular frequency and diameter. The samples were 72 trees consisted of 36 trees which were tapped by the quarre method and 36 other trees were tapped with addition of stimulants. The speed of sound waves propagation was measured by SylvatestDuo for radial direction and longitudinal. The tapping position was determined refering to the wind direction. The resin productivity was twice for tapping with stimulant comparing to the control. The highest resin productivity was 87.31 g per harvest for tapping with stimulant and the lowest (39.86 g per harvest) for control. Statistically, there was not significant difference in sound speed for tapped position as well as for measurement before and after tapped of both radial and longitudinal testing, as well as for the anatomical properties of both of treatments. A high positive correlation was found between resin productivity and intercellular frequency for both treatments (r>0.80), however, there was not significance correlation between resin productivity and other parameters.Keywords: Pinus merkusii, resin tapping, sound wave propagation

Campuran Lateks Karet Alam-Stirena dan Poliisosianat sebagai Perekat Kayu Lamina Blends of Natural Rubber Latex-Styrene and Polyisocyanate for Laminated Wood Adhesive Dede H Yulianto; Euis Hermiati
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 6, No 2 (2008): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Each adhesive has its own strengths and weaknesses due to its bond strength, or its resistance to stress, heat, moisture and organisms. Blending of several adhesives could combine properties of each. Besides, it might reduce adhesives prices as well. In this research Natural Rubber Latex-Styrene (NRL-St) was blended with Polyisocyanate (PI) or API (Aqueous Polymer Isocyanate) adhesive. The aim of this research was to study the effects of compositions of adhesive blends on adhesive properties, and the effects of composition of adhesive blends and pressing time on bond strength of laminated wood (Acacia mangium). Blending compositions of NRL-St/PI were 100/0, 80/20, 60/40, 50/50, 40/60, 20/80, and 0/100. Physico-chemical properties of these blends of adhesives, including solid content, pH, viscosity and mixtures homogenity were analyzed. Blends of NRL-St with PI adhesive had total solid contents range from 42.39 to 50.58%, pH from 7.45 to 7.98, and viscosity from 3506 to 5661 cp. Results of this study showed that optimum composition of blends of NRL-St and API adhesives for producing laminated wood of Acacia mangium was 50/50 (w/w). At this composition the shear strength of laminated wood was 7.06 MPa, while delamination ratio in cold and boiling water were 0% and 4.89% respectively. These values could meet Japan Agriculture Standard (JAS) for laminated wood (shear strength > 5.4 MPa and delamination ratio < 10%). Optimum pressing time for producing laminated wood using API adhesive as well as blends of NRL-St/API (50/50) was two hours.

Steaming Effect on Natural Durability of Bamboo Oriented Strand Board against Termites and Powder Post Beetle Fauzi Febrianto; Intan Purnamasari; Arinana Arinana; Adiyantara Gumilang; Nam H Kim
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 2 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objective of this research was to evaluate the resistance of bamboo oriented strand board (BOSB) prepared from steamed and non-steamed strands of five (5) bamboo species against subterranean termite (Coptotermes curvignathus), dry wood termite (Cryptotermes cynocephalus), and powder post beetle. The five bamboo species were betung, andong, ampel, hitam, and tali. In steaming treatment, bamboo strands were steamed in autoclave at 126 °C and 1.4 kg cm-2 pressure for 1 h prior mixing with adhesive. Strands were bonded into BOSB by the use of commercial Phenol formaldehyde (PF) adhesive at 10% (w/w) of oven dried strands. The resistance of BOSB against termite was done based on SNI 01.7207-2006 procedures and requirement. The results indicated that the resistance of BOSB against termites was significantly affected by bamboo species and steam treatment. The resistance of BOSB prepared from steamed bamboo strands against C. curvignathus and C. cynocephalus was higher than that of non-steamed bamboo strands particularly that of ampel bamboo strands. The powder post beetle was identified as Anobium sp. Bamboo species and strands steaming did not significantly influence the resistance of BOSBs against Anobium sp.Key words: bamboo, dry wood termite, oriented strand board, powder post beetles, subterranean termite

Modifikasi Alat Pelengkung Kayu Skala Pilot dengan Menggunakan Pemanas Modification of Pilot-scale Wood Bending by Heating Elements Teguh Darmawan; Jayadi Jayadi; Sudijono Sudijono; Ika Wahyuni; Yusuf Amin; Wahyu Dwianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 4, No 1 (2006): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This paper deals with manufacturing and modification of pilot-scale wood bending machine by heating elements. The machine has specifications as follows: 1000 mm width; 1305 mm height; 430 mm and 470 mm radius of upper part and bottom part of bent plates, respectively; and a manual stick pressure with 870 mm length. The upper part and bottom part of bent plates are equipped with heating elements, which the maximum of temperature is arranged to 200°C by the electric force of 220V/2000 watt. Left and right sides of bent plates are covered by 1150 mm x 950 mm insulation board to maintain the heat. From the temperature measurement, the heating plates were reached 50°C in 2.5 minutes, 100°C in 9.5 minutes, and 180°C in 28 minutes. The modified machine has successfuly bent Acacia solid wood with dimensions of 1100 mm(L) x 50 mm(T) and 10 mm, 20 mm, and 30 mm in thickness (R).

PEMANFAATAN LANGSUNG SERBUK KULIT KAYU AKASIA SEBAGAI PEREKAT PAPAN PARTIKEL Direct Utilization of Acacia Bark Powder as Adhesive for Particleboard Subyakto Subyakto; Bambang prasetya
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 1, No 1 (2003): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Many studies have been done on the utilization of tannin from acacia bark obtained through extraction process for wood composites adhesive. In this experiment, powder of acacia bark was used directly for particleboard adhesive without extraction process to save cost and production-processing time. Acacia (Acacia mangium) bark was powdered into 60 mesh and mixed with wood particles of sengon (Paraserianthes falcataria) with size of 15 mesh. The compositions of wood particles: bark was varied as follows 50:50, 60:40, 70:30, 80:20. Water and paraformaldehyde were added to the mixture. The matt was hot pressed at 180ºC at pressure of 10 kg/cm2 for 15 minutes. The panels were tested for their physical and mechanical properties in accordance with JIS A 5908.The results shown that some physical and mechanical properties of the board with composition of 60 : 40 were met the JIS A 5908 standard. Further studies are needed to improve all the particleboard properties to meet the standard

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