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INDONESIA
Jurnal Ilmu dan Teknologi Hasil Hutan
Published by Institut Pertanian Bogor
ISSN : 19795238     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal yang dikelola oleh Departemen Hasil Hutan, menyajikan Ilmu, Teknologi, dan Keteknikan (kayu, komposit kayu, pulp dan kertas, serta hasil hutan non kayu, juga konsen terhadap isu-isu lingkungan dan kebijakan-kebijakan terkait hasil-hasil hutan).
Arjuna Subject : -
Articles 39 Documents
 1   2   3   4 
Mahoni wood (Swietenia macrophylla King) contains holoseloluse and lignin. This research has been conducted to using lignin from  mahoni wood for made polyurethane  Isolate lignin is product isolation mahoni degradation with method increasing 4 gram isolate lignin into 150 ml ethylene glycol content 25 gram solution NaOH. The result of degradation used to synthesis polyurethane, then content of LT-PEG with methylen 4.4 difenil diisocyanaate (MDI) become polyurethane.  To identified isolate ligni Mohammad WIJAYA; I Made ARCANA
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 2 No. 2 (2009): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Mahoni wood (Swietenia macrophylla King) contains holoseloluse and lignin. This research has been conducted to using lignin from  mahoni wood for made polyurethane  Isolate lignin is product isolation mahoni degradation with method increasing 4 gram isolate lignin into 150 ml ethylene glycol content 25 gram solution NaOH. The result of degradation used to synthesis polyurethane, then content of LT-PEG with methylen 4.4 difenil diisocyanaate (MDI) become polyurethane.  To identified isolate lignin and product degradation lignin has been conducted to characterized with UV and FTIR method. The result shows that the specified spectra at maximum wavelength at 280 nm and 248 nm. While result from FTIR spectra shows that spevtra at wavenumber 1296 cm-1 and 1249 cm-1 is shows of propile guaiasil group. The function group propel siringile. While lignin from kind at siirngile, while the spectra at 1354 cm-1. The result synthesis polyurethane to characterized by the mechanical properties analysis with Tensile tester machine. It is therefore mechanical properties shows that Tensile strength and Young modulus bigger wuth enhancing lignin of content into polyurethane but percentage elongation increase.   Keywords :  Mahoni wood, isolate lignin, degradation lignin, polyurethane
Forest products industry in Indonesia is now facing major issues such as a huge log deficit, a low industrial efficiency, and a declined in forest products competitiveness.  Production cost and optimization analysis are then conducted to provide insight for the firms so they can operate efficiently and have high products competitiveness. The results show that a production cost varies from US$ 193.60 per m3 to US$ 247.68 per m3 with an average of US$ 214.50 per m3 and a firm’s profit would increa Bintang SIMANGUNSONG; Endartya Nur SOLIHAH
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 2 No. 2 (2009): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Forest products industry in Indonesia is now facing major issues such as a huge log deficit, a low industrial efficiency, and a declined in forest products competitiveness.  Production cost and optimization analysis are then conducted to provide insight for the firms so they can operate efficiently and have high products competitiveness. The results show that a production cost varies from US$ 193.60 per m3 to US$ 247.68 per m3 with an average of US$ 214.50 per m3 and a firm’s profit would increase by 18% even though production decreased by 1.5% when the firm operates at optimum level.   Keywords :    Plywood industry, optimization, production cost analysis, competitiveness
Pulai (Alstonia scholaris)  was classification as IV-V for strenght class and V for durability class. This means that pulai has a low quality. One effort to improved the quality of pulai wood was densification process. This research aimed to evaluation the physical, mechanical and durability of pulai wood before and after densification process and to evaluated the temperature and pressing time on resulted the best quality of pulai wood. Densification was conducted on 160 °C and  180 °C with thre ARINANA .; Farah DIBA
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 2 No. 2 (2009): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Pulai (Alstonia scholaris)  was classification as IV-V for strenght class and V for durability class. This means that pulai has a low quality. One effort to improved the quality of pulai wood was densification process. This research aimed to evaluation the physical, mechanical and durability of pulai wood before and after densification process and to evaluated the temperature and pressing time on resulted the best quality of pulai wood. Densification was conducted on 160 °C and  180 °C with three pressing time 40 minute, 50 minute and 60 minute respectively. Densification targetted was 30%. Physical and mechanical process was conducted based on  British Standard Methods No. 373 (1957), meanwhile durability test against subterranean termites was conducted with modified wood block test methods. Result of the research showed that densified pulai wood  has the highest quality on physical, mechanical and durability properties than pulai wood control. The best densified treatment was on 180 °C with pressing time 60 minute. Densification process has improve the quality of pulai wood on one level class.   Keywords :  Alstonia sp, densification process, Coptotermes curvignathus
Wood products exposed outdoor could be weathered, especially in the tropical region with high in sun light intensity, rain intensity, and relative humidity. An effort that could be done to protect and enhance wood performance is finishing. The purpose of this research is to understand the durability of finishing layer of the finished wood exposed outdoor. The effects of surface condition of boards (planed and unplaned), sawing pattern (quarter sawn and plain sawn), and type of wood finishes (Ult Wayan DARMAWAN; Itan Iskova PURBA
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 2 No. 1 (2009): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Wood products exposed outdoor could be weathered, especially in the tropical region with high in sun light intensity, rain intensity, and relative humidity. An effort that could be done to protect and enhance wood performance is finishing. The purpose of this research is to understand the durability of finishing layer of the finished wood exposed outdoor. The effects of surface condition of boards (planed and unplaned), sawing pattern (quarter sawn and plain sawn), and type of wood finishes (Ultran Lasur UV and Ultran Politur P-03 UV) were studied. The experimental results showed that finishing layer of Meranti batu was the lowest in durability.  The results also indicated that durability of finishing layer depicted by unplanned and plain sawn boards were lower than that of the planed and quarter sawn board. The finishing layer was considered to provide a good protection to the surfaces of board against failures. The presence of failure due to microbial disfigurement and cracking on the surfaces of the finished samples (in average) were 15% and 18% consecutively. On the other hand, the percentages of failure were observed to be 95% due to microbial disfigurement and 81% due to cracking for the unfinished wood. Comparing the two exterior wood finishes used in this experiment, it was found that Ultran Politur P-03 UV provided almost the same protection against microbial disfigurement and cracking compared to Ultran Lasur UV.   Keywords :     Exterior  finishing layer,  microbe stain, surface crack, surface check
Appearance of extractives matter as oil-form on wood surface has been causing problems in wood working, especially for laminated wood products and finishing. The problem of extractives on the oily keruing was observed to get the way how to overcome it so the wood utilization able to be increased by laminated wood manufacturing. The effect of the treatments on the oily keruing as laminated wood material has been done by boiling in the water, boiling in diesel fuel and cooking oil mixture, and pre Jamaludin MALIK; Mochamad Isa ISKANDAR
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 2 No. 1 (2009): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Appearance of extractives matter as oil-form on wood surface has been causing problems in wood working, especially for laminated wood products and finishing. The problem of extractives on the oily keruing was observed to get the way how to overcome it so the wood utilization able to be increased by laminated wood manufacturing. The effect of the treatments on the oily keruing as laminated wood material has been done by boiling in the water, boiling in diesel fuel and cooking oil mixture, and press-vacuum with paraffin addition. Comparison was done for inter-treatment and also to non oily keruing. The materials used were oily (Dipterocarpus gracilis), non oily (Dipterocarpus grandifloris) keruing and tannin-base glue. The observed parameters consist of visual appearance, moisture content, density, bonding strength and delaminating. Results indicated that moisture content of all treatment were not more than 15%, density range of 0.71-0.91 g/cm3 and average 0.79 g/cm3. The bonding strength of laminated wood ranges varied from 17.80 kg/cm2 to 37.73 kg/cm2 nd average 26.44 kg/cm2 (dry testing) and 1.81 kg/cm2-13.97 kg/cm2 and average 9.15 kg/cm2 (wet testing), while the delaminating ranges of 41.19% to 52.85% and average 45.52%. Generally, the treatment of boiling in mixture of diesel fuel and cooking oil with 6 : 1 in proportion, resulted increasing properties for laminated wood made of oily keruing.   Keywords : Extractives, oily keruing, tannin, laminated wood  
Black streak discolorations in the heartwood of teak (Tectona grandis) may lead to considerable economic loss. Unfortunately, the actual properties of the discolored wood remain unknown as yet. In this paper, the influence of wood extractives on black streaked heartwood color was evaluated by successive solvent extraction (n-hexane, ethyl acetate, methanol and hot-water) and color measurement (CIELab system). The change in color co-ordinates, difference in brightness (DL*), difference in redness Ganis LUKMANDARU
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 2 No. 1 (2009): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Black streak discolorations in the heartwood of teak (Tectona grandis) may lead to considerable economic loss. Unfortunately, the actual properties of the discolored wood remain unknown as yet. In this paper, the influence of wood extractives on black streaked heartwood color was evaluated by successive solvent extraction (n-hexane, ethyl acetate, methanol and hot-water) and color measurement (CIELab system). The change in color co-ordinates, difference in brightness (DL*), difference in redness (Da*), and difference in yellowness (Db*), between sucessively extracted and control sample was also calculated. Color of black streaked heartwood changed by any solvents, whereas n-hexane and ethyl acetate extractions apparently increased the brightness L* values. Extraction with methanol and hot water slightly affected the color differences. However, some differences were still observed in the color properties between the black streaked and normal heartwood, indicating that some substances are polymeric and tightly bound to the cell wall matrix. Some quinones : tectoquinone, tectol, lapachol, desoxylapachol and its isomer, were detected as major compounds by means of GC-MS in the n-hexane and ethyl acetate soluble extracts. The involvement of those compounds, thus, to the blackening heartwood should be investigated in the future studies.   Keywords : Tectona grandis, black streak, color, extractives
Investigation of mold and blue stain fungi on rattan was conducted at the rattan industry, Cileungsi, Bogor on February 2005. The isolation and identification of fungi on rattan samples was done at the laboratory of Forest Pathology, Faculty of Forestry, Bogor Agricultural University, Indonesia. Rattan samples are cutted in size each 2 cm.  Samples were growth and incubated on medium PDA (Potato Dextrose Agar) for 7 days in 29°C. There are two treatment, surface sterilized is used alcohol 70 % a Elis Nina HERLIYANA
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 2 No. 1 (2009): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Investigation of mold and blue stain fungi on rattan was conducted at the rattan industry, Cileungsi, Bogor on February 2005. The isolation and identification of fungi on rattan samples was done at the laboratory of Forest Pathology, Faculty of Forestry, Bogor Agricultural University, Indonesia. Rattan samples are cutted in size each 2 cm.  Samples were growth and incubated on medium PDA (Potato Dextrose Agar) for 7 days in 29°C. There are two treatment, surface sterilized is used alcohol 70 % and non surface sterilized. Each treatment was replicated 4 times.  The identification of fungi was done manually using identification book Barnett (1986). The results showed that fungi dominantly formed from sterilized  samples of rattan were Monilia sp. (55%) and Rhizophus sp. (32.5%). Whereas from non sterilized samples were Rhizophus sp. (54.77%) and than Monilia sp. (30.95%).   Keywords :  Rattan, Monilia sp., Rhizophus sp., mold fungi, blue stain fungi.  
Soldier from subterranean termites Coptotermes curvignathus eject a poison secretions as a defensive secretions to overcome their enemy. This research aimed to evaluation the toxicity of soldier defensive secretions extract in aquabidestilata, ethanol, ethyl acetate and n-hexane             solutions against Odontoponera denticulata ants. Filter paper with 200 µl extract were exposure to ants for 14 day.                    The first time ants mortality and time for all ants                  mort Farah DIBA; Dodi NANDIKA
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 2 No. 1 (2009): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Soldier from subterranean termites Coptotermes curvignathus eject a poison secretions as a defensive secretions to overcome their enemy. This research aimed to evaluation the toxicity of soldier defensive secretions extract in aquabidestilata, ethanol, ethyl acetate and n-hexane             solutions against Odontoponera denticulata ants. Filter paper with 200 µl extract were exposure to ants for 14 day.                    The first time ants mortality and time for all ants                  mortality were recorded. Result of the research showed that the first time ants mortality was on ethanol extract (15 minutes                after exposure), then followed on ethyl acetate extract,                  n-hexane extract and aquabidestilata extract for 30, 35 and 40 minutes respectively.The faster time for all ants mortality            was on ethanol extract (54 hour), then followed by ethyl acetate  extract, n-hexane extract and aquabidestilata extract for 74, 79 and 82 hour respectively. GCMS analysis showed that the bioactive compound on ethanol extract were pentadecanal and tetradecanal.   Keywords : Soldier defensive secretions, toxicity, Coptotermes curvignathus, Odontoponera denticulata
The development of baiting system was very advanced, however it was very expensive thus the use of it was limited on certain community. Based on those conditions, it was needed a researches on local resourches basis or low cost material baiting system in order to be applicated in building protection included simple home. This researches consisted of laboratory and field test. The laboratory test was performed to determine preference baiting media (pulp, sawdust, Pinus merkusii wood, WMD (wood mo Yudi RISMAYADI; ARINANA .
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 2 No. 1 (2009): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

The development of baiting system was very advanced, however it was very expensive thus the use of it was limited on certain community. Based on those conditions, it was needed a researches on local resourches basis or low cost material baiting system in order to be applicated in building protection included simple home. This researches consisted of laboratory and field test. The laboratory test was performed to determine preference baiting media (pulp, sawdust, Pinus merkusii wood, WMD (wood monitoring devices) from Pinus radiata and reliability tested between disodium borax decahydrate and chitosan against Coptotermes curvignathus. After the determination of baiting system and reliability, field test was performed on termite attacked building. Field test consisted of termite presence detection,observatory station, determination of consumption rate and baiting system resistance. The laboratory results showed the most preference baiting system was WMD with persentage weight loss was 40.5%. The comparation of reliability between disodium borax decahydrate and chitosan showed that termite mortality of disodium borax decahydrate was higher than chitosan, meanwhile reliability results showed oltherwise. Chitosan field test showed eating consumption level was decreasing at 75th days and on 135th days eating consumption level was rached 15 gr/day. It meaned there was a decreasing of termite population cause of termite baiting system.   Keywords :  Pulp, disodium borax, chitosan, baiting, Coptotermes curvignathus
The aim of this study was to evaluate dynamic modulus of elasticity (MOEdyn) of woods after tested those natural durability. Field tests by grave yard test were applied to prove the natural durability of jackfruit and mangium woods in ground contact. The method of non-destructive testing based on ultrasonic wave propagation was carried out to define ultrasonic velocity than that used for evaluating MOEdyn. The result showed that ultrasonic velocity of jackfruit and mangium woods decreased 3% and Lina KARLINASARI; Ina RITA; Istie Sekartining RAHAYU
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 2 No. 1 (2009): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

The aim of this study was to evaluate dynamic modulus of elasticity (MOEdyn) of woods after tested those natural durability. Field tests by grave yard test were applied to prove the natural durability of jackfruit and mangium woods in ground contact. The method of non-destructive testing based on ultrasonic wave propagation was carried out to define ultrasonic velocity than that used for evaluating MOEdyn. The result showed that ultrasonic velocity of jackfruit and mangium woods decreased 3% and 0.5%, respectively after field test. There was a significant difference of MOEdyn value between before and after natural durability testings

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