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Dr. Ratih Damayanti
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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 8 Documents
 1 
Search results for , issue "Vol 1, No 2 (2010): Wood Research Journal" : 8 Documents clear
Precise Structure of Acidic Polysaccharide Present in Salvia Hydrogels Rike Yudianti; Myrtha Karina; Masahiro Sakamoto; Jun-ichi Azuma
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.2010.1.2.95-102

Abstract

Precise structures of acidic ß-(1,4)-xylan in the hydrogels from three species of Salvia (S. miltiorrhiza (SM), S. sclarea (SS) and S. viridis (SV)) were characterized. SS and SV contained two different acidic residues (4-O-methylglucuronic acid (MeGlcA) and glucuronic acid (GlcA)) substituted at O-2 of ß-(1,4)-linked xylopyranose residues, whereas MeGlcA is absent in SM. Molar ratios of xylose to uronic acid are 2.0 : 1.0 (SM), 1.7 : 1.0 (SS), 1.4 : 1.0 (SV). Distribution of acidic residues in the ß-(1,4)-xylan chains was analyzed by Matrix-Assisted Laser Desorption/Ionization (MALDI)/Time of Flight (TOF) mass spectroscopy after reduction and partial hydrolysis. The results showed that many series of ions appeared as sodium adducts [M+Na]+, indicating that uronic acid residues are randomly and mixed distributed in xylo-oligosaccharide chains in the SS and SV xylans. All species showed presence of oligosaccharides in ranges of m/z 833.3~2561.2 (SM), 657.2~1655.5 (SS) and 731.2~1421.5 (SV). Acidic residues in SS and SV are distributed in shorter xylo-oligosaccharides than those in SM, although complicated substituted profiles with MeGlcA and GlcA were similarly detected in SS and SV. Presence of long free xylan chains in the SM oligosaccharides supported lower number of substituent in its xylan backbone. 
Development of Bio-control Technology for Subterranean Termites Coptotermes curvignathus Holmgren Using Electromagnetic Waves Farah Diba; Ferry Hadary; Seno Darmawan Panjaitan; Tsuyoshi Yoshimura
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.2010.1.2.71-77

Abstract

This paper proposes a non-destructive technology to control subterranean termites Coptotermes curvignathus Holmgren infestations. In the experiment, the apparatus for termites control used electromagnetic waves at two frequencies: 300 Hz and 300 kHz. Termites were exposure to electromagnetic waves on direct methods with variation of exposure time 15, 30, 45 and 60 min respectively. The use of electromagnetic waves for termites control are very beneficial, they are odorless, noiseless, friendly to environment, and easy to apply. The result showed that electromagnetic waves had an effect to termites. The value of termites mortality was range between 25.45~82.27% and the average value of termites filter paper consumption was between 8.89~39.44%. Meanwhile on control treatment, termites mortality and termites filter paper consumption were respectively 14.05% and 79.88% in average. The highest frequency of electromagnetic waves and the longest irradiation time caused the highest average value of termites mortality. The magnitude field from apparatus was range between 0.069~0.1815 μT, which is safe to utilize around the human body. The best result was achieved on frequency 300 kHz and irradiation time 60 min. These results represent important information about the potential use of electromagnetic waves technology for termites control as an environmentally benign alternative in spite of the insecticides uses. 
Wood Characteristic of Superior Sengon Collection and Prospect of Wood Properties Improvement through Genetic Engineering N. Sri Hartati; Enny Sudarmonowati; Widya Fatriasari; Euis Hermiati; Wahyu Dwianto; Rumi Kaida; Kei’ichi Baba; Takahisa Hayashi
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.2010.1.2.103-107

Abstract

Many tree breeding programs ranging from conventional to molecular genetics approach were applied to produce clone or tree genetic industrially desirable wood. This study was aimed to evaluate the wood properties of selected sengon (Paraserianthes falcataria) tree which has high score of  growth parameter and stem form and to evaluate stem properties of transgenic sengon and mangium (Acacia mangium) overexpressing wall hydrolases. Physical and chemical wood properties including basic density, shrinkage and thickness swelling, estimated stand volume, cellulose, lignin and water content were examined for two selected plus tree sengon namely PI and PII, which were grown at Germ Plasm Collection Garden of Research Centre for Biotechnology - LIPI. Both of two sengon tree has high value of  estimated stand volume and basic density (0.43 and 0.49 g/cm3). The PII tree has lower lignin and water content than P I. Cellulase overexpression in sengon and xyloglucanase overexpression in mangium could alter stem cell walls composition. Transgenics mangium stem have higher cellulose content (37.70~53.64%) and lower hemicelluloses content (30~40%) than the wild type. 
Molecular Identification of Decay Fungi in Xylem of Yellow Meranti (Shorea gibbosa) Canker Erwin Erwin; Shuhei Takemoto; Yuji Imamura
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.2010.1.2.78-82

Abstract

By molecular technique, identification of decay fungi isolated from decayed xylem of the tree canker of yellow meranti (Shorea gibbosa) have been carried out.  In this molecular identification, the ITS (Internal Transcribed Spacers) region of rDNA of fungal isolates were amplified and sequenced. The DNA sequence for each fungus was aligned with that of known species in the ITS region of rDNA database for fungi. By phylogenetic analysis based on the sequences of the ITS region of rDNA, a basidiomycete fungi isolated from decayed xylem of yellow meranti was identified as Phlebia  brevispora. The presence of ascomycete fungi on the decayed xylem samples was also detected and identified as Aspergillus nomius, Phlogicylindrium sp., Hypocrea rufa, Hypocrea lixii, Talaromyces sp., and Trichoderma virens.
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.
Relationship between Wood Properties and Developed Drying Schedule of Inferior Teak (Tectona grandis L.F) and Mahogany (Swietenia macrophylla King) Tomy Listyanto; Ganis Lukmandaru; Candra Pramadya; Dwi Siswanto; Nobuaki Hattori
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.2010.1.2.83-88

Abstract

Development of drying schedule has been a critical issue on a drying process concerning the changing of material condition, especially in Java. Established drying schedule used to be purposed for a high quality timber. The aims of this study were to develop drying schedule of inferior teak and mahogany, and to analyze the relationship between the drying schedule and its wood properties.The specimens were taken from 25 years old teak and 20 years-old mahogany. Wood density, sapwood percentage and extractive contents were determined as wood properties. Four types of specimen’s dimensions (25 x 30 mm; 25 x 50 mm; 25 x 100 mm; and 50 x 50 mm) were dried in the oven with temperature of 103⁰C until reach oven dried conditions.  Levels of checks, collapse, and honeycomb were observed to develop drying schedule. A Chi square analysis was used to analyze the relationship between wood properties and the drying schedule.The results showed that there were four types of drying schedule are applicable for teak and five types for mahogany. The most recommended schedule for teak sample was the schedule with an initial temperature (IT) was 70⁰C, relative humidity (RH) was 71%, and the final temperature (FT) was 90⁰C, while the mahogany wood was the schedule with an IT 60⁰C, RH 81%, and the FT 85⁰C, respectively. Chi square analysis indicated that the mahogany lumber dimension was significantly related to the schedule development while specific gravity, heartwood percentage, and extractive content had no significant relationship with the drying schedule development. 
Hypoglycemic Effect of Mahogany (Swietenia macrophylla King) Bark Extracts in Alloxan-induced Diabetic Rats Syamsul Falah; Mega Safithri; Takeshi Katayama; Toshisada Suzuki
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.2010.1.2.89-94

Abstract

In this study, in vivo hypoglycemic activity of mahogany (Swietenia macrophylla) bark extracts was evaluated against alloxan-induced diabetic rats. The hypoglycemic effect was compared to that of standard glibenclamide. Oral administration of hot water and methanol extracts at a dose of 250 mg/kg body weight for thirteen days of daily treatment to diabetic rats was found to possess significant dose dependant hypoglycemic effect in diabetic rats. It less active than that of glibenclamide at dose of 3.22 mg/kg. However, the hot water extract showed significant hypoglycemic activity compared to that standard drug.  Phytochemical analysis of hot water and methanol extracts has shown posistive  test for the presence of  alkaloids, flavonoids, tannins, saponins, dan terpenoids. Histopathological studies of pancreas revealed its significant effect of β-cell count. Therefore, the hot water extract could serve as good adjuvant to other oral hypoglycemic agents and seems to be promising for the development of phytomedicines for diabetes mellitus.  
Control of Dry-Wood Termite Infestation by Bait System Yuliati Indrayani
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.2010.1.2.65-70

Abstract

Chemical treatments with a liquid formulation have been widely used to prevent the infestation of dry-wood termites in buildings. However, such chemical treatments are problematic due to health and the environmental considerations. Therefore, it is important to develop remedial treatments that do not pose environmental hazards. This study was conducted to develop a control strategy for dry-wood termite infestation using a bait system.  Two types of experiments were designed to evaluate the performance of a bait system intended to control dry-wood termite. A gel formulation with an active ingredient (2.15% hydramethylnon) and food attractants was used for the testing (Types I and II). In the first type of experiment, Type I, the effectiveness of the bait in a small wood block specimen was evaluated. Feeding arena lumber with artificial galleries was prepared for the Type II experiment so that the response of the insects to the gel could be observed. In general, the average percentage termites that died after being exposed to the gel formulation in all two types of experiment was more than 65%, and in the gel control the average percentage of live termites was more than 75% in Type I, and more than 95% in Type II. These results suggest that the gel bait system used in this study has the potential to eliminate dry-wood termite. Further investigation will be indispensable to increase the reliability of the bait system as a control strategy for dry-wood termites.   

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