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Dr. Ratih Damayanti
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ratih_turmuzi@yahoo.com
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ejournal_wrj@gmail.com
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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 5 Documents
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Search results for , issue "Vol 13, No 2 (2022): Wood Research Journal" : 5 Documents clear
Fast-Growing Wood-Polymer Nano Composite Characteristics through Nano-SiO2 Impregnation Istie Rahayu; Abdul Salam Min Rohmatillah; Esti Prihatini; Wayan Darmawan; Gilang Dwi Laksono; Vera Junita Sitanggang
Wood Research Journal Vol 13, No 2 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.2.69-78

Abstract

Ganitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) and jabon (Anthocephalus cadamba) are fast-growing wood species that have low strength and durability class. One of methods for improving the characteristics of ganitri and jabon woods is impregnation. This study objectives were to analyze the effect of impregnation of Melamine Formaldehyde Furfuryl Alcohol (MFFA) copolymer and 0.5% Nano-SiO2 on the physical, mechanical and durability properties of ganitri and jabon woods. The impregnation process was carried out by applying a 0.5 bar vacuum for 1 hour and followed by 2 bar pressure for 2 hours. The results showed that impregnation with MFFA and Nano-SiO2 could improve optimally the physical and mechanical properties and durability of fast-growing woods
Subterranean Termite Durability of Three Inferior Wood Species Collected from Indonesian New Guinea Coated with Two Coating Systems
Wood Research Journal Vol 13, No 2 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.2.43-47

Abstract

Wood is very susceptible material from termite attacks. A simple, cheapest method to prevent this attack is coating treatment. On this work, three inferior wood species collected from Manokwari – Papua Barat, namely Pulai (Alstonia scholaris), Binuang (Octomeles sumatrana), and Jambu (Syzygium sp.) were coated with two coating systems of oiled and water- based coatings. Coating was applied using paint brush on wood samples with dimensions, 50 cm long x 5 cm wide x 2.5 cm thick. Durability was conducting with grave yard test, where half-length of wood samples, coated and uncoated samples, were buried on the yard for the three consecutive months. Wood durability was evaluated using two variables, wood weight loss, and wood damage, respectively, and analyses into other variables likes wood resistance class, level of resistance, degree of damage, and natural durability classes. The results indicated that both coated systems, oiled and water based, had an average of spreading rates from 0.005-0.015 g/cm2. Weight loss of three inferior species of wood recorded from the control samples are 38.65%, 12.12%, and 6.14% for Pulai, Binuang and Jambu. Treatment with coating systems, weight loss could be prevented into 95.1%, 58.2% and 56.0% to control for Pulai, Binuang and Jambu, respectively.  Wood resistance class of Pulai is IV. Binuang and jambu species initially is Moderate Resistant (III) and improve into Resistant (II). It is summarized that coating systems available in the local market could protect wood from subterranean termites.
Bio-Attractant of termites bait from waste paper and extract Ocimum basilicum Linn against Subterranean Termites Coptotermes curvignathus Holmgren Farah Diba; Palguna Wiranata; Nurhaida Nurhaida; Muhammad Dirhamsyah; Rudi Hartono
Wood Research Journal Vol 13, No 2 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.2.48-55

Abstract

Termites were the most destroying wood organism and one of the methods for controlling termites and suppressing its population is the baiting system. One of the conditions in the baiting system method is that the bait must be able to attract termites. Mostly the attractant is made from an extract of the plant. This research aimed to evaluate the attractants of termites bait from waste paper and extract of basil leaf (Ocimum basilicum) against subterranean termites Coptotermes curvignathus Holmgren. Leaves of Ocimum basilicum extracted with maceration process with ethanol. After extraction, the yield was made into five concentration, consist of 2%, 4%, 6%, 8% and 10%. The waste paper was made into termite’s bait with a square bait with measure 2 cm long x 2 cm wide x 1 cm thick. The result of research showed that the average of termites mortality value was 18.79% - 97.58%. The highest termites mortality was achieve on 10% concentration of extract Ocimum basilicum. Its followed by the concentration 8% with mortality value 91.52%; concentration 6% with mortality value 78.18%; concentration 4% with mortality value 61.82% and concentration 2% with mortality value 51.52%. Meanwhile on control treatment the mortality value was 18.79%. The average of weight loss of termite’s bait was 3.41% - 8.36%. The highest weight loss was achieved on concentration 8% and this bait was more attractive to termites. Termite’s bait from waste paper and extract of Ocimum basilicum was attractant to subteranean termites Coptotermes curvignathus and the optimum concentration was 8%.
Phenolics Content and DPPH Free Radical Scavenging Activity of Dalbergia latifolia leaf ethanolic extract Masendra Masendra; Agus Ngadianto; Ridla Arifriana; Greitta Kusuma Dewi; Eko Prasetyo; Muhammad Rafly Nugraha; Saffana Ahda Labiba; Fatimah Ayu Warahapsari; Brandon Aristo Verick Purba; Ganis Lukmandaru
Wood Research Journal Vol 13, No 2 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.2.56-62

Abstract

Dalbergia latifolia is one of the famous species that naturally grows in Java, Indonesia. The wood of this species is purple in color and the leaf is utilized as forage. The purpose of this study is to determine the bioactivity and phenol contents of D. latifolia leaf ethanolic extract. The antioxidant activity and anti-termite activity were measured through the DPPH method and Neotermes bosei activity. Furthermore, phenol contents were determined through colorimetric method and ethanolic extract constituents were identified by GC-MS. The DPPH inhibition of ethanol extract of D. latifolia leaf exhibited 138.20±2.14 µg/ml. While the measurement of total phenol and total flavonoid content of D. latifolia leaf showed a value of 192.67±9.41 mg GAE/ g and 55.23±5.11 mg QE/ g of dried extract sample. The termiticidal activity of ethanolic extract showed low activity. The GC-MS detection showed fatty acids as dominant compounds. The inhibition of DPPH by D. latifolia leaf ethanol extract in this study suggested this leaf is potent as antioxidant agents.
Total Phenolic, Flavonoid, Tannin Content and DPPH Scavenging Activity of Caesalpinia sappan Linn. Bark Brandon Aristo Verick Purba; Rini Pujiarti; Masendra Masendra; Ganis Lukmandaru
Wood Research Journal Vol 13, No 2 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.2.63-68

Abstract

Caesalpinia sappan is a shrubby Leguminosae tree commonly found in Indonesia, traditionally utilized as natural dye and herbal drink. However, in the making of traditional herbal drink, the bark is often discarded as residues. This research aimed to investigate total phenolic (TPC), flavonoid (TFC), and tannin (TTC) content as well as the antioxidant activity (DPPH scavenging activity) of the bark successive extracted with n-hexane, ethyl acetate, methanol, and hot water as well as analyzed it with GC-MS. The result showed the highest amount of TPC (824.16±62.28 mg GAE/g), TFC (185.03±1.91 mg QE/g), and TTC (987.07±30.98 mg TAE/g) in the methanol extract of the bark. GC-MS analysis resulted hydroquinone as a major constituent in the methanol extract. Further, antioxidant activity was found the strongest on methanol extract (IC50=63.48), while correlation between antioxidant activity and TFC was found the highest (R2=0.93). These findings suggest that bark of C. sappan is a suitable source of natural antioxidant with strong activity to DPPH radical.

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