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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 11 Documents

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Search results for , issue "Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis" : 11 Documents clear

Bond Ability of Oil Palm Xylem with Isocyanate Adhesive Atmawi Darwis; Muhammad Y Massijaya; Naresworo Nugroho; Eka M Alamsyah; Dodik R Nurrochmat
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Oil palm xylem composed of vascular bundles and parenchyma tissue and directly related to its properties. Utilization of oil palm xylem into the wood laminate products requires information on its bond ability to adhesive used. Isocyanate adhesive is a prospective adhesive due to its various advantages compared to other adhesives. This study aimed to obtain information about the bond ability of the oil palm xylem with isocyanate adhesive. The results showed that isocyanate adhesive has good wettability on oil palm xylem indicated by its contact angle of below 90°. Isocyanate adhesive also showed good performance by looking at the value of wood failure and delamination. However, the shear strength of laminated oil palm xylem was low. Wood failure occurred in the parenchymal tissues region.Key words: bond ability, isocyanates, laminated board, oil palm xylem

Carbon Dioxide Injection in Bamboo Cement Board Manufacturing Bakri Bakri; Suhasman Suhasman
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objective of this study was to evaluate the effect of CO2 injection in liquid phase to the physical and mechanical properties of cement board made from bamboo particles of Gigantochloa atter, Dendrocalamus asper and Schizostachyium brachycla. Mixtures of bamboo culm particles, cement, and water in the ratio by weight of 1:2.5:1.25 were casted in iron plate mold of (25x25x1) cm3, pressed and then hold for 24 h to obtain the target density of 1 g cm-3. The board was then injected by CO2 in liquid phase for 30 min of curing time period. Evaluation of physical and mechanical properties of board were evaluated in accordance to JIS A 5417-1992 standard. The results showed that moisture content of the boards was 3.15-3.62%, density was 0.68-0.80 g cm-3, water absorption and thickness swelling after immersed in cold water for 24 h were 45.11-57.60%, and 0.65-0.87%, respectively. The internal bond, modulus of elasticity and modulus of rupture were 0.18-0.74, 1339-5031, and 40.12-79.59 kg cm-2, respectively. Only cement board made from mixture of G. atter particles, cement and water met physical properties requirement of JIS A 5417-1992 standard. However, no cement board fulfilled the mechanical properties requirement of JIS A 5417-1992.Key words: bamboo, carbon dioxide injection, cement board

Trace Elements Measurement of Mangium Wood (Acacia mangium) by AAS Nyoman J Wistara; Evelin Yustiana
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The ash and metals content of Acacia mangium Wild was determined following standard procedures of TAPPI T211 om-93 test method and wet ashing procedures with HNO3 and HClO4 solution, respectively. Measurements of trace elements were carried out by the use of atomic absorption spectrometry (AAS). Although it was fluctuating, the lowest ash content was found in a 5 years old wood and then tended to increase in older three. In the 3 and 5 years old wood, the ash content decreased from upper end to the lower end of the stems. In the 7 and 9 years old wood, the lowest ash content was in the middle part and it tends to increase to the lower end of the stem. Ash content of sapwood was higher than that of heartwood. The content of Mg decreased with increasing age of wood, and other metals tended to increase with the increase of wood age. Metallic components of acacia wood tended to accumulate more in sapwood compared to these in heartwoods. Vertically, the content of Mg and Cu decreased from upper end to lower end of the stems, and in contrary to these of other metals.Key words: atomic absorption spectrometry, Acacia mangium, closed loop cycle, metallic contents, oxygen-based bleaching

Bioactivity Test of Mindi Extractives (Melia azedarach Linn) Using Brine Shrimp Lethality Test Wasrin Syafii; Rita K Sari; Siti Maemunah
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The aims of this research were to determine the yield of extracts from continuous extraction of heartwood, sapwood, inner bark, branch, and leave of Toona sinensis in n-hexane, ethyl acetate, and methanol solvents and their bioactivity using brine shrimp lethality test (BSLT) was evaluated. The results indicated that the yield of leave, inner bark, branch, heartwood, and sapwood extracts were 11.0, 6.7, 1.9, 1.6, and 1.6%, respectively. The highest yield of extracts was obtained from extraction in ethyl acetate (16.1%), followed by methanol (3.5%), and n-hexane (3.1%). The BSLT tests showed that the ethyl acetate extracts of all tree parts have higher bioactivities (LC50 1-52 μg ml-1) than the n-hexane extracts (LC50 40-181 μg ml-1), and the methanolic extracts (LC50 49-1375 μg ml-1). The ethyl acetate extract from inner bark has the highest bioactivity (LC50 μg ml-1). The qualitative analysis detect the ethyl acetate extract from inner bark containing saponins, alkaloids, phenolics, flavonoids, triterpenoids, steroids, and glycosides.Key words: Artemia salina, bioactivity, brine shrimp lethality test, Toona sinensis

Antiproliferative Activities of Anthocephalus cadamba Extracts on Human Breast Cancer and Cervical Adenocarcinoma Cell Lines Rita K Sari; Devi Armilasari; Deded S Nawawi; Wayan Darmawan; Silmi Mariya
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The aim of this research was to evaluate the anticancer properties of methanolic extracts from inner bark and wood of jabon (Anthocephalus cadamba). The extracts were investigated in vitro bioassay for its possible antiproliferative activities on human MCF7 breast cancer cell line and HeLa cervical adenocarcinoma cell lines. The cell viability were assessed using microculture tetrazolium technique (MTT) colorimetric assay. The results showed that inner bark extract exhibited higher antiproliferative activity on MCF7 cancer cell line (IC50 91 μg ml-1) than wood extract (IC50 312 μg ml-1). But, antiproliferative activity of inner bark extract on HeLa cell lines was higher (IC50 5 μg ml-1). The inner bark extract is potential to be developed as anti cancer agent in cervical adenocarcinoma cancer therapy because moresecure against Vero normal cells (IC50 288 μg ml-1). Whereas compounds such as phenolic and fatty acid contribute to high antiproliferative activities of inner bark extract. The qualitative analysis detect the extracts containing flavonoids, triterpenoids, saphonin which are thought to contribute to the high antiproliferative activities of this extract.Keywords : Anthocephalus cadamba, antiproliferative activity, human MCF7 breast cancer cell line, HeLa cervical adenocarcinoma cell lines, Vero normal cell lines

The Color Change of Jabon Wood Stained by Bark Extract of Samak Wood (Syzygium inophyllum) Muflihati Muflihati; Deded S Nawawi; Istie S Rahayu; Wasrin Syafii
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The water soluble extract of samak (Syzygium inophyllum) bark was applied as natural dye for jabon wood (Anthocephalus cadamba). Ten percent of the extract concentration was used for staining of jabon wood by soaking methods for 74 h at room temperature, and for 3 h at 70 oC, respectively. The stained jabon wood performances were evaluated as the color change and stability by hot water leaching test. The stained and leached woods were assessed by determination of color changes using CIELab method and FTIR analysis. Based on the CIELab analysis, the brightness (L* value) of stained jabon wood decreased, and tend to more reddish (a* value increased) and yellowish (b* value slightly increased) compared to these of unstained wood, as the results, the color of jabon wood changed from light grey to reddish orange after staining with samak bark extract. The leaching test of stained wood to hot water changed the color from reddish orange to dull orange. FTIR analysis indicated that part of the extract stained jabon wood was quite stable to hot water treatment.Key words : bark extract, jabon wood, natural dye, samak wood, Syzygium inophyllum

Heartwood Proportion and Physical-Mechanical Properties of Three Diameter Class of Gelam Wood (Melaleuca sp) from Central Kalimantan Wahyu Supriyati; Tibertius A Prayitno; Soemardi Soemardi; Sri M Marsoem
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Gelam wood commonly use for house pole in peatswamp land of Central Kalimantan. However increasing the utilization of gelam wood lead to harvest a small diameter of trees. This research aims to study the percentage of heartwood, physical mechanical properties of gelam wood of different diameter class.Keyword: diameter class, gelam wood, heart wood, physical mechanical properties

Distribution of Water Borne Preservative on Wood Preserved Using Full Cell and Empty Cell Processes Fauzi Febrianto; Adiyantara Gumilang; Anne Carolina; Fengky S Yoresta
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This research focused on distribution of water borne preservative on woods preserved using full cell and empty cell processes. Retention, penetration, and durability of preserved woods against dry wood termite (Cryptotermes cynochephalus LIGHT) attacked were evaluated. Pine (Pinus merkusii) and sengon (Paraserianthes falcataria) woods were preserved using 5% Wolmanit CB (water soluble preservative) using full cell and empty cell processes. The results indicated that retention of preservative preserved with full cell process was higher than empty cell process. Copper penetration on sengon wood preserved using full cell process was much higher than empty cell process. Distribution of copper and chromium on wood preserved using full cell process evenly distributed through the wood both in pine and sengon woods. They were sharply decreased from outerpart to inner part of wood when preserved using empty cell process. The whole part of pine and sengon woods preserved by either full cell or empty cell processes strongly resistance against dry wood termite attacked. Quantitative analysis of active substance of preservative using atomic absorption spectroscopy (AAS) could detect the preservative in preserved wood more accurately compared using conventional method (retention and penetration tests).Key words: distribution pattern, durability, empty cell process, full cell process, water borne preservative

Characteristics of Plybamboo made from woven mat of Andong Bamboo (Gigantochloa pseudoarundinaceae) Ega P Yoga; Sukma S Kusuma; Jajang Suryana; Muhammad Y Massijaya
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objective of this research was to analyze the influence adhesive types, composition of width and thickness of bamboo strips to the physical and mechanical properties of plybamboo. Keywords: andong bamboo, epoxy, plybamboo. PVAc

An Experimental Study on the Flexural Behavior of Glulam Beam of Pinus Wood (Pinus merkusii) Fengky S Yoresta
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The aimed of this research was to determine the flexural behavior of glulam beam made from pine wood (Pinus merkusii) under various laminate thicknesses and then compared to its solid beam. The material used was pine wood with moisture content of 10% and and polyurethane adhesive (Water based polymer isocyanate, WBPI). Four types of glulam beams (namely, Glulam A, B, C, and D) produced with laminate thickness of 25, 16.67, 12.5, and 10 mm, respectively. Solid beam was also prepared as control. All beams have a cross sectional dimension of (50x50) mm2. Bending test is conducted using a 5 ton capacity of Universal Testing Machine, Instron 330. The results indicated that incerasing in number of laminate to a point tend to increase the values of stiffness and modulus of rupture (MOR) of glulam beams. However, the higher of laminate thickness tends to decrease the stiffness and MOR values. Energy absorption of solid beam was noted twice compared to glulam beams.Key words: flexural behavior, glulam beam, modulus of rupture, Pinus merkusii, stiffness

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