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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.

Arjuna Subject : -

Articles 316 Documents

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Antifungal Activity of Faloak (Sterculia comosa Wallich) Extractives Fabianus Ranta; Deded S Nawawi; Eko S Pribadi; Wasrin Syafii
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 1 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Faloak (Sterculia comosa Wallich) is a specific species of dry land that has potential antifungal. This study aims to determine the toxicity of barks, leaves, and seeds extracts as an antifungal, and to identify its bioactive compound. The extracts were prepared by multi stage maceration method. Antifungal activity was tested by agar well diffusion method, and minimum inhibition concentration (MIC) and minimum fungicide concentration (MFC) by two-fold serial dilution method were measured. Bioactive compound of active fraction were identified by Liquid Chromatography Mass Spectroscopy (LCMS), Fourier Transform Infrared (FTIR), and Nuclear Magnetic Resonance (NMR). Results showed that the diethyl ether (DE) fraction of seeds is more effective in inhibiting of Candida albicans growth, than the other fractions. Subfraction of DE7 has a higher potency in inhibiting the growth of of Candida albicans. Based on the analysis by LCMS, FTIR and proton NMR, the DE7 sub fractions contain 3-hydroxyoctadecanoic acid (C18H36O3), which is suggested as a mainly compound responsible for antifungal activity.Key words: antifungal, Candida albicans, extractive, Sterculia comosa

Potential of Fungus Metarhizium brunneum Petch as Bio Insectisides to Control Termite Macrotermes gilvus Hagen in Castor Plantation Muhammad Sayuti; Teguh Santoso; Idham S Harahap; Utomo Kartosuwondo
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 1 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

One of the important pest of castor plant (Jatropha curcas L) in Indonesia is termite Macrotermes gilvus. While entomopathogenic fungus Metarhizium brunneum has been proven effective against this termite and the subterranean termite M. gilvus in the laboratory, the performance of the fungus in the field need to be studied. The aims of the research are to investigate the cruising distance and colony population of M. gilvus before and after application of M. brunneum. Triple mark recapture technique has been used to predict the termite colony population size. The suspension of fungi at density 1,21x106 conidia ml-1 was poured at each experimental station (150 ml per station). The result showed that in block I (15,210 m2), block II (5,700 m2), block III (27,000 m2); 8, 1 and 15 termite colonies have been detected respectively from which, 150,388; 59,219; and 149,459 individual were found. In block I, the termites cruised as far as 140,5 m, as compared to 140 m in block III. In all blocks, we noted the significant decrease of termite population after application of M. brunneum, from initial population 359,066 to 15,015 individual.Key words: bio-control agents, entomopathogenic fungi, Jatropha curcas, Macrotermes gilvus, Metarhizium brunneum, size of colony

Aktivitas Antirayap Ekstrak Daun Orthosiphon sp., Morinda sp., dan Carica sp. Abdul Azis; Tibertius A. Prayitno; Ganis Lukmandaru; Tomy Listyanto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 13, No 2 (2015): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Rayap adalah agen perusak kayu paling agresif dan menyebabkan banyak kerusakan pada perumahan. Pencegahan serangan rayap dapat dihindari dengan menggunakan bahan pengawet alami berasal dari tumbuhan. Penelitian ini bertujuan (1) mendeteksi senyawa yang terkandung dalam ekstrak daun kumis kucing (Orthosiphon sp.), mengkudu ( Morinda sp.) dan pepaya (Carica sp.) juga menentukan rendemen ekstrak menggunakan pelarut yang berbeda (etanol- toluena, heksana, etil asetat, etanol dan air panas) (2) menguji dan menentukan aktifitas menolak (repellent) yang diperoleh dari setiap ekstrak terhadap serangan rayap kayu kering (Cryptotermes sp.). Metabolit sekunder aktif dideteksi dengan reaksi kimia. Larutan ekstrak diteteskan pada kertas saring dan dikeringkan pada suhu 60°C selama 3 jam. Sampel diuji ke rayap selama 4 minggu. Hasil menunjukkan bahwa rendemen ekstrak tertinggi diperoleh dari ekstraksi dengan air panas kumis kucing, mengkudu dan pepaya yaitu : 27, 8%, 26,71% dan 34,06% secara berurutan. Rendemen ekstrak terendah diukur dalam ekstrak larut heksana (kumis kucing : 4,40% dan mengkudu : 4,81%). Dengan reaksi kimia, senyawa aktif dideteksi dalam semua tumbuhan kecuali alkaloid. Alkaloid dideteksi paling banyak dalam ekstrak pepaya. Ekstrak pepaya larut etil asetat menunjukkan tingkat kerusakan terendah sedangkan tingkat mortalitas rayap tertinggi diamati dalam ekstrak mengkudu larut etanol. Ekstrak pepaya larut etil asetat menunjukkan konsistensi aktifitas yang bagus baik terhadap mortalitas rayap maupun pengurangan berat pada bahan yangdiuji sehingga dengan demikian dapat diaplikasikan pada penelitian berikutnya dengan konsentrasi yang lebih tinggi.

Aplikasi Isotop δ13C dan δ18O untuk Lacak Balak Kayu Jati (Tectona grandis Linn.f.) di Jawa Application of Isotopes δ13C and δ18O for Teak Wood (Tectona grandis Linn.f.) Timber Tracking in Java Agus Kholik; Djiono Djiono; Iskandar Z Siregar; Ulfah J Siregar; Lina Karlinasari; Tedi Yunanto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 7, No 1 (2009): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Tracking the origin of Teak timber and its wood product is possible to be carried out using stable isotopes fingerprinting. To enrich the available variation patterns, Teak woods samples were collected from nine Forest Management Units (FMUs) representing all provinces and Teak centres in Java. Mills from all part of woods were mixed for analyses. The mills were burned under vacuum in a reactor system at 1200oC for 2 h, the resulting clean CO2 was transferred to the mass spectrometer to determine its isotopic composition of δ13C and δ18O. The generated data was then analysed using multivariate analysis. The results showed that isotopes analysis grouped Teak populations in Java intoWest Java population and mixed Central-East Java population. To consider wood as material for fingerprinting traded forest product, a refinement on method should be done.

Machining Properties of Two Lesser Used Timber from West Papua Wahyudi S Pono; Muhamad Makrus; Antonius EB Susilo
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Machining properties of wood play important roles in wood-working processes and will determine quality of end-wood products. There are several less-used species of wood with superior properties and could be promoted as commercial timber. This research was designed to explore the machining properties of two less-used spesies from West Papua of, watergum (Syzygium sp) and simpur (Dillenia sp). Varibles used to evaluate the machining properties are planning, sanding, boring, mortising, and turning. A modified-ASTM D 1666-64 was used to investigate this experiment. The results indicated that water gum was classified to the first class of machining properties (very good) having free defects of 83.70%, while simpur belongs to the second class (good) with free defects of 72.55%. These wood species are comparable with matoa and could be used as substituent timber. According to their density, these two wood species were suitable for general construction, housing material and furniture products. Both species are highly being recommended for customer preferences instead of the previously favourable timbers.Key words: machining properties, less-used species, simpur, water gum

Pengaruh Ekstrak Bintaro (Carbera odollam Gaertn) dan Kecubung (Brugmansia candida Pers) terhadap Rayap Tanah Coptotermes sp Influence of Bintaro (Carbera odollam Gaertn) and Kecubung (Brugmansia candida Pers) Extract against Subterranean Termite Coptotermes sp Didi Tarmadi; Arief H Prianto; Ikhsan Guswenrivo; Titik Kartika; Sulaeman Yusuf
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 5, No 1 (2007): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Subterranean termite especially Coptotermes sp has been spread widely and has caused a tremendous economical loss. Various chemical compounds have been used to overcome termite attack. However, utilization of chemical could endanger the environment, thus it is important to find another compound which can be used as an environmental friendly wood preservatives. One of the alternatives is to extract natural compound which has an anti-insect peculiarity. Fruits, leaves and barks of Bintaro and Kecubung, especially their leaves and flowers have been widely known as traditional medicine. This paper explains the effects of the extracts of Bintaro (leaves and bark) and Kecubung (leaves) on subterranean termite of Coptotermes sp.Leaves and bark powder of Bintaro and leaves powder of Kecubung were extracted with n-hexane, ethyl acetate, acetone, and methanol. Paper disc which has been dropped by the extract solution was used as bait to subterranean termite of Coptotermes sp. The observation of termite mortality was calculated for every two days during 10 days of observation. The result shows that Bintaro leaves extracted with methanol caused 100% termite mortality on last observation. Whereas on Bintaro bark extracted with n-hexane and acetone caused 100% termite mortality on eighth day of the treatment. Kecubung leaves extracted with n-hexane and ethyl acetate caused 100% termite mortality on last observation

Sapwood and Heartwood Contents on the Logs and Sawn Boards of Manglid (Manglieta glauca Bl.) Mohamad Siarudin; Ary Widiyanto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 2 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The aim of this research is to identify the characteristics of sapwood and heartwood of manglid wood both in the logs and sawn boards; and to evaluate the differences of sapwood and heartwood content of sawn board from two sawing patterns: live sawing pattern and semi quarter sawing pattern. Totally 30 manglid logs coming from private forest in Sodonghilir sub-District, Tasikmalaya Regency were used as samples. About 35 sawn boards from each of sawing pattern were randomly chosen as specimens for sawn board observation. Result shows that manglid wood has thicker heartwood content than the sapwood on the log cross section, with the average of the heartwood and sapwood thickness is 17.04 and 6.57 cm, respectively. The thickness of heartwood part is positively correlated with the log diameter. Meanwhile, the percentage of the heartwood volume increases but the percentage of the sapwood decreases by the increasing of the log diameter. The higher thickness of the heartwood part compared to the sapwood part is consistent in the case of sawn board both from live sawing pattern and semi quarter pattern. Sawn board from the live sawing pattern has a lower sapwood percentage than the heartwood percentage on the width section.Key words: heartwood, live sawing, log, sapwood, semi quarter sawing

Perubahan Struktur Anatomi Kayu akibat Pemanasan dengan Microwave Wood Anatomical Changes due to Microwave Heating Krisdianto Krisdianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 2, No 2 (2004): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Microwave technology has been developed for wood material in the last few decades. The aim of micro waving wood material is to solve the problem of wood processing, such as drying time and permeability. During microwave radiation, the wood structure has been changed microscopically as well as macroscopically. Microscopic modification includes ruptured of ray cell parenchyma tissue, breakage of pit aspiration and open tylosis blockade in vessels. While, macroscopic modification includes checks radially

Kualitas Kayu Lapis dari Finir Bagian Juvenil dan Dewasa Samama (The Quality of Plywood Made from Juvenile and Mature Wood Veneer of Samama Tekat D Cahyono; Imam Wahyudi; Trisna Priadi; Fauzi Febrianto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 15, No 2 (2017): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This study designed 7 types of plywood that were arranged by juvenile and mature part of samama (Anthocephalus macrophyllus) wood, The adhesive used was urea formaldehyde with addition of hardener (NH4Cl) in ratio of 100:1 (weight/weight). The adhesive was applied on both surfaces of core veneer, which were loose and tight surfaces, with glue spread was 150 g m-2. The veneers were arranged in accordance with the research design and the resulted structures were then hot pressed at 110 C for 30 seconds per mm of the plywood’s thickness. The pressure was 10 kg cm-2. The results showed that bonding strength of plywood made from juvenile samama veneer was lower than that of the mature one, although the value was still met SNI standard for type I interior plywood. Furthermore, plywood’s moisture content was also met the requirement of the standard. Plywood density was increased by 11-12% from that of the wood. These findings suggest the suitability of both juvenile and mature wood of samama for the material of good quality plywood. Further studies on determination of other veneer-based products, such as laminated veneer lumber (LVL), were then recommended.Keywords: juvenile, mature, plywood, samama, urea formaldehyde

Chemical Composition and Anticancer Activity Of the Essential Oil Of Surian Heartwood Rita K Sari; Wasrin Syafii; Suminar S Achmadi; Muhammad Hanafi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 2 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Chemical constituents of the essential oil of water and steam distillates of surian heartwood (Toona sinensis) were analyzed by a gas chromatograph-mass spectrometer. Then, the oil was investigated in vitro anticancer bioassay for its possible antioxidant activity by DPPH free radical scavenging and antiproliferative effects by MTT method using Raji lymphoma cancer cell lines (ATCC CCL 86), HeLa cervical cancer cell lines (ATCC CCL2), and Vero normal cell lines (ATCC CCL 81). The essential oil yield from water and steam distillates of surian heartwood was 0.4% (w/w). Thirty-two compounds were identified, that consisted mainly of oxygenated sesquiterpenes (77%). The most representative compounds were spathulenol (21%), isospathulenol (7%), α-cadinol (7%), β-cedrenoxide (6%), and torreyol (5%). The oil showed less effective antioxidant, but the oil had high antiproliferative effects on Raji and HeLa cancer cells with IC50 28 and 134 μg ml-1, respectively when compared to Vero normal cells (IC50 1412 μg ml-1). Our findings suggest that the essential oil of surian heartwood might be considered as a potentially anticancer agent on human cancer cells, especially lymphoma cancer cells.Key words: antioxidant activity, antiproliferative effects, cancer cell lines, essential oil, Toona sinensis

Page 25 of 32 | Total Record : 316

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