Articles
<![CDATA[Improving Fire Resistance of Mahogany (Swietenia macrophylla) Wood Impregnated with Mixture of Borax and Boric Acid ]]>
<![CDATA[Tomy Listyanto]]>;
<![CDATA[Aditya Aji Pratama]]>;
<![CDATA[Keisuke Ando]]>;
<![CDATA[Nobuaki Hattori]]>
<![CDATA[ Wood Research Journal Vol 11, No 2 (2020): Wood Research Journal ]]>
Publisher : <![CDATA[Masyarakat Peneliti Kayu Indonesia ]]>
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DOI: 10.51850/wrj.2020.11.2.48-52
<![CDATA[The study was aimed to investigate the effects of mixture of borax and boric acid concentration and different level of pressure on absorption, retention quantity, and fire resistance properties of mahogany (Swietenia macrophylla). A total of 50 samples of 9 x 19 x 1016 mm (ASTM E 69-02) were taken from mahoganylumber and then air-dried. A total of 45 samples were impregnated with aqueous solutions of borax and boric acid in three different concentrations (5, 7, and 9 %) and at three different pressure levels (5, 7.5, and 10 atm) for 2 hours pressure time, while5 samples were liftedas control. Dried impregnated samples and untreated samples were feeding in flame with lid combustion method refers to ASTM E 69-02. Interestingly, the results showed that borax and boric acid effectively improved the fire resistanceproperties(mass losses, ignition temperature, maximum temperature, and smoke and smolder production)of mahogany wood.Mixtures of borax and boric acid at a concentration level of 9% and pressure of 10 atm arerecommended to obtain the best results compare to the other interactions on combustion properties.]]>
<![CDATA[KETAHANAN ALAMI KAYU HIBRID AKASIA (Acacia mangium × A. auriculiformis) TERHADAP SERANGAN RAYAP KAYU KERING (Cryptotermes cynocephalus Light.) ]]>
<![CDATA[Fatma Zohra]]>;
<![CDATA[Sri Sunarti]]>;
<![CDATA[Tomy Listyanto]]>
<![CDATA[ Jurnal Pemuliaan Tanaman Hutan Vol 15, No 2 (2021): Jurnal Pemuliaan Tanaman Hutan ]]>
Publisher : <![CDATA[Center for Forest Biotechnology and Tree Improvement (CFBTI) ]]>
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DOI: 10.20886/jpth.2021.15.2.55-64
<![CDATA[Development of Acacia hybrid is important to be done due to their superiority such as high productivity, good wood quality, more tolerance to pest/disease and adaptive to marginal sites, although its wood durability to wood-destroyer organism attacks is still unknown yet. This study aimed to observe the wood natural durability of Acacia hybrid to drywood termites (Cryptotermes cynocephalus Light.) attack. The wood samples used were taken from 6 years old trees of Acacia hybrid in Wonogiri, Central Java. The experimental design used is completely randomized design using two factors, axial and radial of wood section with the number of trees as replication. Parameters measured were extractive content, termite mortality and wood mass loss. The results showed that the axial section of wood significantly affected the wood extractive content at the level of 0.01, while termite mortality and the mass loss of wood were not significantly affected by the wood section. The largest average percentages of termite mortality and mass loss of wood found on the middle of wood section (96.67%) and near the bark (1.14%) respectively. Based on this result, the Acacia hybrid wood is categorized as very durable wood and potential to be developed as raw material for solid wood-based industries.]]>
<![CDATA[Pemanfaatan Limbah Biomassa Sawit Ramah Lingkungan ]]>
<![CDATA[Denny Irawati]]>;
<![CDATA[Ganis Lukmandaru]]>;
<![CDATA[Joko Sulistyo]]>;
<![CDATA[Sigit Sunarta]]>;
<![CDATA[Tomy Listyanto]]>;
<![CDATA[Jaka Widada]]>;
<![CDATA[Nunuk Supriyatno]]>;
<![CDATA[Yose Rizal]]>
<![CDATA[ Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 6, No 4 (2020): Desember ]]>
Publisher : <![CDATA[Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada ]]>
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DOI: 10.22146/jpkm.44874
<![CDATA[Dalam rangka memenuhi kebutuhan lahan untuk pembangunan perumahan karyawan, PT Semen Baturaja Tbk. (PTSB) membuka kurang lebih 27 hektar lahan yang di dalamnya diperkirakan terdapat kurang lebih 2700 batang tanaman kelapa sawit yang kurang produktif. Pembukaan lahan tersebut akan menghasilkan biomassa sawit yang cukup besar. Salah satu usaha pemanfaatan limbah biomassa sawit adalah dengan mengolahnya menjadikompos. Kompos dapat digunakan untuk rehabilitasi lahan bekas tambang oleh PTSB. Hingga saat ini, PTSB belum memiliki pengalaman di bidang pembuatan kompos. Oleh karena itu, PTSB bekerja sama dengan Fakultas Kehutanan, Universitas Gadjah Mada untuk memproduksi pupuk kompos dari limbah biomassa tanaman sawit. Metode yang digunakan pada kegiatan pengabdian ini adalah sosialisasi, pembuatan kompos secara partisipatif, dan pendampingan di lapangan. Luaran dari kegiatan ini berupa kompos limbah biomassa sawit serta pengetahuan mengenai teknologi proses pembuatan kompos bagi pihak PTSB.Jumlah pupuk kompos yang bisa diperoleh dari delapan gundukan daun kelapa sawit adalah 248,9 ton dan dari batang kelapa sawit sebanyak 1.236,6 ton. Pupuk kompos setelah pengomposan selama dua bulan mempunyai rasio C/N 13,7. Biaya yang dikeluarkan untuk pengomposan adalah Rp591.405.000,00 dengan potensi keuntungan sebesar Rp6.093.232.500,00. Pengetahuan perihal pembuatan kompos berdampak pada penghematan pengeluaran PTSB untuk membeli pupuk guna rehabilitasi lahan serta penanganan permasalahan limbah biomassa.]]>
<![CDATA[SINTESIS NANOKITOSAN TERMODIFIKASI NATRIUM KLORIDA DAN APLIKASINYA SEBAGAI PENGAWET KAYU SENGON (Falcataria moluccana) ]]>
<![CDATA[Annisa Primaningtyas]]>;
<![CDATA[Tomy Listyanto]]>;
<![CDATA[Ganis Lukmandaru]]>
<![CDATA[ Journal Penelitian Kehutanan FALOAK Vol 6, No 1 (2022): Jurnal Penelitian Kehutanan Faloak ]]>
Publisher : <![CDATA[Balai Penelitian Dan Pengembangan Teknologi Hasil Hutan Bukan Kayu ]]>
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DOI: 10.20886/jpkf.2022.6.1.29-43
<![CDATA[Chitosan is an environmentally friendly natural preservative. In this study, nanometer-sized chitosan (nanochitosan) modified with NaCl was used as a sengon wood (Falcataria moluccana) preservative. The NaCl addition aimed to make the nanoparticle stable which was affected by chitosan concentration and the dispersion storage time. This study applied nanochitosan as a wood preservative by observing the concentration of chitosan and the storage time factor of nanochitosan dispersion. The samples were tested its anti-termite properties against dry wood termites (Cryptotermes cynocephalus Light), observed the morphology and size of nanochitosan in wood by Scanning Electron Microscopy (SEM) and particle size analyzer (PSA). ANOVA results showed no significant effect of concentration and storage time factors on preservation test parameters, but interesting things were found in this study. The particle size of the preservative affected the distribution on the surface. Samples preserved with nanochitosan with varying sizes had termite bites that were evenly distributed throughout the surface. On the other hand, samples preserved with uniformly sized nanochitosan had centered termite bites in several spots of surfaces. It was due to the particle sizes diversity influenced by storage time which provokes the agglomeration and determines the particles distribution in the preservative dispersion and wood surfaces.]]>
<![CDATA[Aktivitas Antirayap Ekstrak Daun Orthosiphon sp., Morinda sp., dan Carica sp. ]]>
<![CDATA[Abdul Azis]]>;
<![CDATA[Tibertius A. Prayitno]]>;
<![CDATA[Ganis Lukmandaru]]>;
<![CDATA[Tomy Listyanto]]>
<![CDATA[ Jurnal Ilmu dan Teknologi Kayu Tropis Vol 13, No 2 (2015): Jurnal Ilmu dan Teknologi Kayu Tropis ]]>
Publisher : <![CDATA[Masyarakat Peneliti Kayu Indonesia ]]>
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DOI: 10.51850/jitkt.v13i2.32
<![CDATA[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.]]>
<![CDATA[Physical and Mechanical Properties of 10-Year Old Superior and Conventional Teak Planted in Randublatung Central Java Indonesia ]]>
<![CDATA[Fanny Hidayati]]>;
<![CDATA[Joko Sulistyo]]>;
<![CDATA[Ganis Lukmandaru]]>;
<![CDATA[Tomy Listyanto]]>;
<![CDATA[Harry Praptoyo]]>;
<![CDATA[Rini Pujiarti]]>
<![CDATA[ Jurnal Ilmu dan Teknologi Kayu Tropis Vol 13, No 1 (2015): Jurnal Ilmu dan Teknologi Kayu Tropis ]]>
Publisher : <![CDATA[Masyarakat Peneliti Kayu Indonesia ]]>
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DOI: 10.51850/jitkt.v13i1.55
<![CDATA[Tree breeding program has been conducted in Indonesia in order to produce more productive teak trees. Recently, from this program, superior clones (clone source) of teak have been selected for the establishment of the wider plantations. These clones show a good performance on growth characteristics such as stem diameter and tree height. However, it is important to evaluate wood quality of selected superior teak. Physical (heartwood percentage, wood color, basic density, and shrinkage per 1% change in moisture content) and mechanical (static bending strength and compressive strength) properties were investigated for 10-year old of two sources type of teak (superior and conventional) planted in Randublatung, Central Java, Indonesia. There was not significant different between superior and conventional teak was found in all physical and mechanical properties of both teak wood, suggesting that wood properties of both teak are similar at the same age. All trees are in juvenile phase as show by increasing of basic density from pith to bark. Basic density has positively correlation with all mechanical properties measured. It can be said that basic density can be used to estimate mechanical properties.Keywords: conventional teak, mechanical properties, physical properties, superior teak]]>
<![CDATA[Aktivitas Antirayap Ekstrak Daun Pepaya dan Kumis Kucing (Antitermite Activities of Leaf Extracts of Pepaya and Kumis Kucing) ]]>
<![CDATA[Abdul Azis]]>;
<![CDATA[Tibertius A Prayitno]]>;
<![CDATA[Ganis Lukmandaru]]>;
<![CDATA[Tomy Listyanto]]>
<![CDATA[ Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 1 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis ]]>
Publisher : <![CDATA[Masyarakat Peneliti Kayu Indonesia ]]>
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DOI: 10.51850/jitkt.v16i1.442
<![CDATA[Antitermite activities of leaf hexane extract of cat whiskers (Orthosiphon sp.) leaves, ethyl acetate, and ethanol- toluene extracts of pepaya (Carica sp.) leaves were investigated in several concentrations (1, 5, 10, and 15%, weight based) that be impregnated to filter papers againts the dry-wood termites Cryptotermes sp. After impregnation, filter papers were dried into oven at 60 °C for 3 hours, then were tested to termites for 4 weeks. The results showed that treatment concentration could obtain the highest termites mortality level, no weight loss and the lowest damage level. Ethyl acetate extract of papaya leaves exhibited the highest termites mortality (91.2%) at concentration of 10%. This concentration also showed the lowest weight loss (0%) and the highest antifeedant activity (antifeedant coefficient of 100%). Ethyl acetate extract of papaya leaves exhibited the lowest of LC50 value (7844.20 μg ml-1 ). Antitermitic activity showed a trend more repellent than toxic. Fatty acid such as hexadecanoic acid, linolenic acid, octadecanoic acid and steroid compounds that detected by GC-MS were estimated to play a role as antitermite agents. Thus, the application of ethyl acetate extract of papaya leaves at concentration of 10% was recommended to the next experiment by using solid wood impregnation.]]>
<![CDATA[Evaluasi terhadap Stimulan Ethephon dalam Penyadapan Pinus merkusii (Evaluation on Ethephon Stimulant to Pinus merkusii Tapping) ]]>
<![CDATA[Ganis Lukmandaru]]>;
<![CDATA[Sigit Sunarta]]>;
<![CDATA[Tomy Listyanto]]>;
<![CDATA[Kasmudjo Kasmudjo]]>;
<![CDATA[Rini Pujiarti]]>;
<![CDATA[Ragil Widyorini]]>
<![CDATA[ Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis ]]>
Publisher : <![CDATA[Masyarakat Peneliti Kayu Indonesia ]]>
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DOI: 10.51850/jitkt.v16i2.454
<![CDATA[The aim of this study was to find out the effect of Ethephon, an ethylene releasing compound, in a combination with sulfuric acid resin production Pinus merkusii. The tested stimulants were ETRAT; SR4; 20% sulfuric acid; 20% sulfuric acid - Ethephon 2%; 3.3% sulfuric acid – 4.1% Ethephon; and sulfuric acid – 8.3% Ethephon. Trees without stimulant spraying were the controls. The results showed that for daily production, the first-day observation gave the highest value but decreased drastically after second-day observation in a varied degree depent on the stimulants. On the basis of accumulated production, the addition of Ethephon in a high or low level of sulfuric acid concentration exhibited significantly higher resin production compared to that of ETRAT; SR4; and 20% sulfuric acid stimulants as well as control trees. It increased resin production by 98.0-150.6% compared to control trees in class age of VII and increased by 140.9-227.1% in class age of IV stands. Moderate significant correlations (r=0.65) were observed between the values of resin production and tree diameter (controls) as well as between the values of resin production and tree diameter of trees treated by sulfuric acid stimulants (r=0.65-0.82).]]>
<![CDATA[Sifat Papan Laminasi Kayu Randu (Ceiba pentandra (L.) Gaertn) dengan Variasi Pola Gergajian Lamina dan Arah Lapisan ]]>
<![CDATA[Muhammad Navis Rofii]]>;
<![CDATA[Prasetyo Prasetyo]]>;
<![CDATA[Tomy Listyanto]]>;
<![CDATA[Annisa Primaningtyas]]>;
<![CDATA[Yustinus Suranto]]>;
<![CDATA[T.A. Prayitno]]>;
<![CDATA[Ragil Widyorini]]>
<![CDATA[ Jurnal Ilmu Kehutanan Vol 16 No 1 (2022): Maret ]]>
Publisher : <![CDATA[Fakultas Kehutanan Universitas Gadjah Mada ]]>
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DOI: 10.22146/jik.v16i1.1739
<![CDATA[Kapok wood (Ceiba pentandra (L.) Gaertn) is a low-density wood species that can become a light construction material in the form of laminated timber products. This study aimed to understand the properties of laminated timber from kapok wood at different sawing patterns of laminae and core layer orientation. This study used kapok wood produced from community forests and PVAc (Polyvinyl Acetate) resin as the binder to produce laminated timber. The laminated boards were manufactured from dried laminas, measuring 100 x 9.5 x 1.7 cm, and were glued together with the resin before being pressed and clamped with the pressure of 1 MPa for 12 hours. The dimension of the final laminated board was 100 x 38 x 5 cm. Before being cut for the physical and mechanical properties tests, the laminated boards were conditioned at room temperature for a week. The results indicated that sawing patterns had insignificant effects on moisture content, density, static bending properties, and bonding strength of laminated boards. The core layer orientation had a significant effect on the density and the modulus of rupture. Generally, laminated board from kapok wood with the parallel grain direction of the core layer resulted in higher static bending properties and...]]>
<![CDATA[Pengaruh Ukuran Partikel Bahan Baku terhadap Kualitas Pelet Ranting Kaliandra (Calliandra calothyrsus) dari Limbah Pakan Ternak Kambing ]]>
<![CDATA[Ahmad Harun Hidyatullah]]>;
<![CDATA[Johanes Pramana Gentur Sutapa]]>;
<![CDATA[Tomy Listyanto]]>
<![CDATA[ Jurnal Ilmu dan Teknologi Kayu Tropis Vol 20, No 1 (2022): Jurnal Ilmu dan Teknologi Kayu Tropis ]]>
Publisher : <![CDATA[Masyarakat Peneliti Kayu Indonesia ]]>
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DOI: 10.51850/jitkt.v20i1.576
<![CDATA[Pemberian pakan kambing dengan daun kaliandra menyisakan limbah ranting kaliandra yang belum banyak dimanfaatkan secara optimal. Penelitian ini bertujuan untuk mengetahui pemanfaatan limbah ranting kaliandra sebagai bahan baku pelet untuk energi terbarukan. Penelitian dirancang untuk mengetahui pengaruh berbagai ukuran partikel bahan baku pada kualitas pelet limbah ranting kaliandra (Calliandra calothyrsus). Ukuran partikel bahan yang digunakan adalah 20-40 mesh, 40-60 mesh, dan 60-80 mesh. Proses pembuatan pelet menggunakan tekanan kempa 70 kg/cm2. Kualitas pelet yang diamati adalah sebagai berikut: berat jenis dan sifat proksimat (kadar air, kadar abu, zat mudah menguap, dan karbon terikat) serta nilai kalor. Hasil penelitian menunjukkan pelet limbah ranting kaliandra terbaik dihasilkan dari ukuran partikel 60-80 mesh dengan pemberian tekanan kempa 70 kg/cm2. Pelet yang dihasilkan mempunyai spesifikasi kualitas sebagai berikut nilai berat jenis 1,086; kadar air 10,12%; kadar zat mudah menguap 82,50%; kadar abu 1,21%; karbon terikat 16,25%; dan nilai kalor 4617,20 kal/g. Hasil penelitian ini menunjukkan bahwa pelet limbah ranting kaliandra telah memenuhi standar kualitas pelet menurut SNI 8021-2014 dan DIN 51731. Penelitian ini dapat disimpulkan bahwa pengembangan limbah ranting kaliandra pada peternakan kambing bisa digunakan sebagai bahan baku pelet sebagai sumber energi terbarukan yang berkualitas.]]>
