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Dr. Ratih Damayanti
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Research Center for Biomaterials,Indonesian Institute of Sciences Jl. Raya Bogor Km 46, Cibinong, Bogor 16911, Indonesia
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INDONESIA
Wood Research Journal : Journal of Indonesian Wood Research Society
Published by Masyarakat Peneliti Kayu Indonesia
ISSN : 20873840     EISSN : 27749320     DOI : 10.51850/wrj
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Wood Research Journal is the official journal of the Indonesian Wood Research Society. This journal is an international medium in exchanging, sharing and discussing the science and technology of wood. The journal publishes original manuscripts of basic and applied research of wood science and technology related to Anatomy, Properties, Quality Enhancement, Machining, Engineering and Constructions, Panel and Composites, Entomology and Preservation, Chemistry, Non Wood Forest Products, Pulp and Papers, Biomass Energy, and Biotechnology. Besides that, this journal also publishes review manuscripts which topics are decided by the Editors.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Kehutanan
Articles 157 Documents
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Micropropagation and Protoplast Culture in Paraserianthes falcataria Miyuki Chujo; Junji Eizawa; Shinso Yokota; Kazuya Iizuka; Dody Priadi; Nurul Sumiasri; Nobuo Yoshizawa
Wood Research Journal Vol 1, No 2 (2010): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2010.1.2.108-114

Abstract

Paraserianthes falcataria (L.) Nielsen is a fast-growing tree native to Indonesia that has been widely planted throughout the tropics. The growth and wood qualities of P. falcataria should be improved to promote the establishment of plantation forests for this species. Tissue culture technique has a potential to be applied for tree breeding programs for P. falcataria. The objective of this study is to establish the micropropagation and protoplast culture protocol of P. falcataria. In the present study, the respective conditions were investigated for seedling culture, callus induction, protoplast isolation, and protoplast culture. Surface-sterilized seeds were cultured on MS (Murashige and Skoog) medium at 25, 27, and 29°C. After 4 weeks of culture, 27°C gave the best result for average shoot length. Five types of explant (leaflet, petiole, internode, cotyledon, and hypocotyl) obtained from the seedlings were used for callus induction. They were cultured on the MS media containing a combination of 6-benzylaminopurine (BAP) and 2,4-dichlorophenoxyacetic acid (2,4-D) at different concentrations. Green nodular callus was obtained from only leaflet. The most effective medium condition for callus induction from leaflet was the MS medium containing 10.0 µM BAP and 10.0 µM 2,4-D. Leaflet of seedlings was used for protoplast isolation. Based on the results of the yield and viability of protoplasts, the best enzymatic condition was as follows: enzyme solution, 1% Cellulase Onozuka RS, 0.5% Pectolyase Y-23, and 1% Driselase; osmoticum, 0.8 M mannitol; treatment temperature and time, 30°C for 4 hrs. Isolated protoplasts were incubated in liquid AA media with a combination of 1-naphthaleneacetic acid and thidiazuron at different concentrations. Although cell wall formation was observed, cell division did not occur.
The Effect of Traditional Fumigation on Physical, Mechanical and Anatomical Properties of Wooden Handicraft in West Kalimantan Farah Diba; Lolyta Sisillia
Wood Research Journal Vol 10, No 2 (2019): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2019.10.2.39-47

Abstract

West Kalimantan wooden craft is internationally well known and its export is increasing. Currently, high durability and attractive color of wood material such as belian (Eusideroxylon zwageri Teysm & Binnend) is rarely available, then alternatively mangium (Acacia mangium Willd.) and laban wood (Vitex pubescens Vahl.) are used for handicraft. Fumigation is one possible way to improve wood service life and color shades. This paper determines the impact of traditional fumigation on wood raw material on physical, mechanical and anatomical properties. The timber fumigation technique was conducted for one week, with curing time from early morning until late afternoon. After treatment, the physical, mechanical and anatomical properties of wood were evaluated. The different of color before and after treatment was measured by image processing scanner Canon P 145. Physical and mechanical properties refer to the British standard method. Result shows that fumigation improves the quality of wood, especially on color of wood. The wood became dark and more shining. It’s good for the handicraft materials. The quality of wood on moisture content value, both on mangium and laban wood was increased with average 30-50%. The average value of wood density of mangium wood after treatment with fumigation was 0.52, meanwhile laban wood was 0.55. The average value of radial shrinkage of mangium wood after fumigation treatment was 3.96% and tangential shrinkage was 6.34%. The average value of radial shrinkage of laban wood after fumigation was 6.43% and tangential shrinkage was 6.08%. The average value of hardness of mangium wood after fumigation treatment was 470.13 kg/cm2  and laban wood was 625.46 kg/cm2. The Fumigated  wood color was darker and more attractive for decorative and  craft products than non-fumigated wood. In general, this method could be used to preserve wood and to increase the physical performance of wood as raw material for handicraft.
Application of Pulp Fiber for Automotive Brake Lining Wawan Kartiwa Haroen; Posma Reginald Panggabean
Wood Research Journal Vol 3, No 2 (2012): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2012.3.2.61-67

Abstract

Mechanical and/or chemical pulp fiber is usually used for papermaking and other kind of paper products. In fact, physical properties of chemical and/or mechanical pulp showed that it can be utilized as filler of automotive brake lining.  Mechanical pulp is non-asbestos cellulosic fiber with high heat absorption rate which can fit into criterion of good quality brake lining. Pulp  fiber was defiberation mixed with some other composite materials can create high fiber bonding with some hardness, friction materials, clutching, heat and dust retainer fiber which is free of asbestos fiber. Current automotive brake lining uses asbestos fiber as main filler, which is in fact known as cancer triggers.  A series of study and assessment in using pulp fiber in a specified composition as brake lining filler have been carried out. The research and field experiment revealed that a mixture of pulp fiber can be further examined and feasible for brake lining prototype filler application which is ready for automotive vehicles operation. The development and application fiber brake lining filler has been tested on two wheeled vehicles with considerable result.
Development of Earthquake-proof Fittings of Traditional Wooden Frame Structures Takehiro Wakita; Fuyuki Konuta; Akihisa Kitamori; Yasuo Kataoka
Wood Research Journal Vol 2, No 1 (2011): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2011.2.1.62-68

Abstract

There are many old traditional wooden frame buildings which were specified as cultural heritage or will be specified as Japanese important building in the near future. But there are many buildings which do not have good performance against seismic action. The purpose of the investigation is to develop the earthquake proof fittings, and to apply them to the traditional wooden structures. In concrete terms, the types of the earthquake-proof fittings are the Kamachi door, the acrylic door and the hinged wooden door. Strength and rigidity of the earthquake proof fittings were estimated experimentally, and they were applied to reinforce the two old Buddhist temples.
Properties of Included Phloem in Teakwood Ganis Lukmandaru
Wood Research Journal Vol 9, No 2 (2018): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2018.9.2.45-51

Abstract

In some areas of Indonesia, the heartwood of teak tree (Tectona grandis L.f.) contains included phloem, which is categorized as defects. This paper characterized the colour and chemical properties of such abnormal wood. Three selected trees from Perhutani plantation, Randublatung region, were assessed. The heartwood colour properties were measured by CIELAB system. Result showed that the included phloem-containing heartwood (IPHW) was darker (L*), but less red (a*) and yellow (b*) compared to the adjacent normal heartwood (NHW). The lignin and ash contents were not significantly different in the wood radial direction. In contrast, the level of extractive contents were significantly different between sapwood and heartwood. The amount of ethanol-benzene extractive and solubility in 1% NaOH in the IPHW region were significantly higher than that in normal tissues. The analysis of extractive components using gas chromatography-mass spectrometry showed that the deoxylapachol and lapachol was highly marked in the IPWH region. The obtained results suggest that napthaquinone compounds were related to the protection against wood-destroying organisme attack.
Berberine in the Medicinal Plant of Tali kuning (Tinospora dissitiflora Diels) Wahyudi Wahyudi; Y. Ohtani; H. Ichiura
Wood Research Journal Vol 2, No 2 (2011): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2011.2.2.100-104

Abstract

Two different approaches have been used to determine the bioactive compounds in the medicinal plant of Tali kuning (Tinospora dissitiflora Diels). Firstly, the conventional approach using column chromatography (CC), and preparative thin layer chromatography (PLC) eluted with benzene:ethyl acetate: formic acid (5:4:1, and 5:4:2, respectively), followed by CC eluted with benzene:methanol (3:2) were used to separate and isolate berberine from the chloroform fraction of Tali kuning. Structural elucidations of the isolated compounds were conducted using nuclear magnetic resonance (NMR) and mass spectrometry (MS). Secondly, a rapid and simple approach use the integrated intensities of proton signals for H-13 and H-8 of berberine on 1H-NMR spectra, then the qualitative and quantitative determination of berberine in Tali kuning can be achieved directly from the crude extracts using 1H-NMR. The proton signals for H-13 and H-8 of berberine on 1H-NMR spectra, which appeared at empty regions as singlet, and without interference from the other signals, were available for qualitative determination of berberine. Whereas, the integrated intensity of proton signal for H-13 on 1H-NMR spectrum was used for quantitative determination of berberine. Berberine content of Tali kuning was calculated manually based on the integrated intensity of proton H-13 from the authentic berberine chloride, which was 18.6 mg/g based on the weight of air-dried wood meal. This berberine content was comparable to that (22.78 mg/g) of Amur corktree (Phellodendron amurense Rupr), which is widely acknowledged for good producer of berberine.
The Changes in Microstructure and Thermal Constant in Conversion of Carbonized Wood to Silicon Carbide Composite Joko Sulistyo; Sri Nugroho Marsoem; Toshimitsu Hata
Wood Research Journal Vol 6, No 1 (2015): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2015.6.1.30-36

Abstract

Carbonized wood which possesses microstructure with random orientation graphitic crystallites and with pores between the graphitic crystallites, is potentially developed into new material of silicon carbide (SiC) composite, a high performance material for engineering purposes. This paper investigates the development of the microstructure in the turbostratic carbon phase and the formation of SiC crystal from the reaction of carbon and SiO2. Results show the turbostratic microstructure in carbonized wood lead to the possible formation of SiC compound in the manufacturing of SiC/SiO2/Ccomposite. The heat treatment at 1800ºC on the mixture of SO2 and carbonized wood creates the formation of SiC compound, which improves the degree of microstructure ordering. The improvement of microstructure turbostratic carbon and the growth of graphitic crystallites in turbostratic carbon improves the thermal conductivity of SiC/SiO2/C composite comparingwith those of carbonized wood composite.
Degradation Analysis on Manufacture of Cement-bonded Particleboard Using Supercritical CO2 Rohny Setiawan Maail
Wood Research Journal Vol 4, No 2 (2013): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2013.4.2.76-82

Abstract

 This study analyzed the degradation process on manufacture of cement-bonded particleboard (CBP) using supercritical CO2. CBP with a target density of 1.2 g/cm3 was manufactured at a cement / wood particle / water weight ratio of 2.5:1.0:1.25. As references, neat cement board (NC) was manufactured at a cement / water weight ratio of 2.5:1.25, and Ca(OH)2 board was manufactured at a Ca(OH)2 / wood particle / water weight ratio of 3.0:1.0:1.5. Hand-formed mat of 230 x 230 mm was cold-pressed to a targeted thickness of 12 mm and kept in an oven set at 60ºC for 24 h. Four specimens of 50 x 210 mm prepared from these boards were then used for curing treatment. The three curing treatments were (1) supercritical CO2 treatments, 10 min to 10 days; (2) conventional curing treatment for 28 days (Conventional); and (3) neither curing nor supercritical CO2 treatment as the control. The chemical changes and the mineralogical composition of the curing and the degradation processes of the CBP were examined using X-ray diffractometry (XRD), thermal gravimetry (TGA-DTG), and scanning electron microscopy (SEM) observation. Significant correlations were found between the supercritical CO2 treatment and mechanical properties during both the curing and degradation processes. Internal bond (IB) strength, modulus of rupture (MOR), and modulus of elasticity (MOE) values of CBP achieved their maximums by supercritical CO2 treatment in 30 min. These conditions indicated that supercritical CO2 treatment accelerates the curing process rapidly and enhances the mechanical properties of the CBP.  However, these values decreased in the treatments from 60 min to 10 days and had a negative effect on board performance, indicating that supercritical CO2 treatment over a longer time span leads to the degradation of the CBP. Furthermore, X-ray diffractometry (XRD), thermal gravimetry (TG-DTG), and scanning electron microscopy (SEM) observation clarified that the mechanisms of the degradation are directly affected by the mineralogical composition of the system, in particular by the calcium carbonate content as caused by carbonation.
Chemotaxonomic Study in the Heartwood of Javanese Teak: Analysis of Quinones and Other Related Components Ganis Lukmandaru
Wood Research Journal Vol 3, No 1 (2012): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2012.3.1.30-35

Abstract

Ethanol-benzene soluble extracts from the heartwood collected from 87 individual teak trees grown in the island of Java were analyzed using GC and GC-MS. The variations of quinones (tectoquinone, deoxylapachol, isodeoxylapachol, lapachol, tectol) and other components (palmitic acid, squalene, and two unknown compounds) were investigated for a chemotaxonomical study. There were wide variations in the contents of the constituents among individuals from three habitats, Purwakarta (plantation forest), Randublatung (plantation forest)  and  Gunungkidul (community forest)  regions. Cluster  and  discriminant analysis  results  showed  that  teak  trees  can  be  classified  into  three  clusters  based  on  the composition of quinones and squalene. Cluster I was distinguished by relatively high amount of squalene and low amount of quinones. In contrast, high amount of tectoquinone and low amount of squalene was observed in cluster III. Further, comparatively high amount of naphtaquinones (lapachol, deoxylapachol and its isomer) and tectol was found in cluster II. Based on geographical distribution, Purwakarta, Randublatung, and Gunungkidul regions mostly produce cluster II, I, and III type individuals, respectively.
Manufacture and Properties of Non-Wood Binderlessboard: Effect of Storage Method and Manufacturing Process on Chemical Composition of Bagasse Binderlessboard Ragil Widyorini; Shuichi Kawai
Wood Research Journal Vol 1, No 1 (2010): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2010.1.1.27-33

Abstract

Effects of storage and pressing methods on the chemical composition of Sugarcane (Saccharum officinarum L.) bagasse binderlessboards were investigated by chemical and spectroscopic analyses. The inner layer (core/pith) and the outer hard fibrous layer (face/rind) of bagasse were used as raw materials. The result showed that effect of steam-injection pressing was higher than hot pressing treatment on the chemical composition of bagasse binderlessboards. Under steam-pressure of 1.0 MPa for 10 min, hemicelluloses of bagasse were more significantly degraded than α-cellulose and lignin. Decreasing of Syringyl/Guaiacyl (S/G) and Cinnamic acids/Guaiacyl (C/G) ratios indicated that modification of lignin had occurred during steam and heat treatments. Considering that the residual sugar in bagasse was still high, the storage method of Sugarcane bagasse was an important key for producing bagasse binderlessboards.

Page 6 of 16 | Total Record : 157

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