Yusup AMIN
R & D Unit for Biomaterials, Cibinong Science Center - LIPI

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ANATOMICAL CHARACTERISTICS AND CHEMICAL PROPERTIES OF THE BRANCH-WOOD OF Schizolobium amazonicum DUCKE SPECIES AND ITS POTENTIAL USES Amin, Yusup; Adi, Danang S.; Wahyuni, Ika; Kusumah, Sukma S.; Damayanti, Ratih
Indonesian Journal of Forestry Research Vol 10, No 2 (2013): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

The scale of forest degradation and deforestation in Indonesia has inspired the use of lesser-known wood species, which are potentially abundant and so far has not much been utilized. Utilization of these woods should be imposed not only of the stem wood but also of the branch-wood portions. Schizolobiumamazonicum Ducke treeis one of those lesser-known species, and growing fast with an MAIof3.68 cm/year.In Indonesia this species is only found in the Purwodadi Botanical Garden. A research was conducted to study the basic characteristics (anatomical aspects and chemical properties) of the branch-wood portion of this species. The branch-wood materials were obtained from the Purwodadi Botanical Garden situated in Pasuruan (East Java). The specimens used were the first branch of the trunk (stem) of nine-year old S. amazonicum tree (= 29.46 cm). The branch-wood samples were then examined for the anatomical aspects (macroscopic and microscopic characteristics) and chemical properties (chemical composition). Results revealed that the anatomical properties of S.amazonicum branch-wood exhibited close similarities to those of sengon wood; it was light in appearance and white in color. Its fiber averaged about 1500 μm, and based on the fiber dimensions derived values the branch- wood fiber of this species was categorized into first-class quality for pulp and paper manufacture. Further, the chemical composition of this branch-wood compared favorably with that of sengon and mangium wood. The composition of extractive content thatsoluble in alcohol-benzene; lignin; holocellulose; and α-cellulose of this branch-wood were 2.46; 28.71; 80.64; and 50.47%, respectively. The overall assessment implied that the branch-wood portion of S.amazonicum tree affords favorable potential to be developed as raw material for pulp and paper manufacture. Also, considering that both sengon and mangium woods were already used in the pulp and paper industries as well as the trees are used for the establishment of industrial plantation forests (HTI), therefore S.amazonicum trees, as fast- growing species,are also promising for the establishment of pulp/paper-HTI for their branch-wood.
ANATOMICAL CHARACTERISTICS AND CHEMICAL PROPERTIES OF THE BRANCH-WOOD OF Schizolobium amazonicum DUCKE SPECIES AND ITS POTENTIAL USES Amin, Yusup; Adi, Danang S.; Wahyuni, Ika; Kusumah, Sukma S.; Damayanti, Ratih
Indonesian Journal of Forestry Research Vol 10, No 2 (2013): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2013.10.2.119-125

Abstract

The scale of forest degradation and deforestation in Indonesia has inspired the use of lesser-known wood species, which are potentially abundant and so far has not much been utilized. Utilization of these woods should be imposed not only of the stem wood but also of the branch-wood portions. Schizolobiumamazonicum Ducke treeis one of those lesser-known species, and growing fast with an MAIof3.68 cm/year.In Indonesia this species is only found in the Purwodadi Botanical Garden. A research was conducted to study the basic characteristics (anatomical aspects and chemical properties) of the branch-wood portion of this species. The branch-wood materials were obtained from the Purwodadi Botanical Garden situated in Pasuruan (East Java). The specimens used were the first branch of the trunk (stem) of nine-year old S. amazonicum tree (= 29.46 cm). The branch-wood samples were then examined for the anatomical aspects (macroscopic and microscopic characteristics) and chemical properties (chemical composition). Results revealed that the anatomical properties of S.amazonicum branch-wood exhibited close similarities to those of sengon wood; it was light in appearance and white in color. Its fiber averaged about 1500 μm, and based on the fiber dimensions derived values the branch- wood fiber of this species was categorized into first-class quality for pulp and paper manufacture. Further, the chemical composition of this branch-wood compared favorably with that of sengon and mangium wood. The composition of extractive content thatsoluble in alcohol-benzene; lignin; holocellulose; and α-cellulose of this branch-wood were 2.46; 28.71; 80.64; and 50.47%, respectively. The overall assessment implied that the branch-wood portion of S.amazonicum tree affords favorable potential to be developed as raw material for pulp and paper manufacture. Also, considering that both sengon and mangium woods were already used in the pulp and paper industries as well as the trees are used for the establishment of industrial plantation forests (HTI), therefore S.amazonicum trees, as fast- growing species,are also promising for the establishment of pulp/paper-HTI for their branch-wood.
ANATOMICAL CHARACTERISTICS AND CHEMICAL PROPERTIES OF THE BRANCH-WOOD OF Schizolobium amazonicum DUCKE SPECIES AND ITS POTENTIAL USES Amin, Yusup; Adi, Danang S.; Wahyuni, Ika; Kusumah, Sukma S.; Damayanti, Ratih
Indonesian Journal of Forestry Research Vol 10, No 2 (2013): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2013.10.2.119-125

Abstract

The scale of forest degradation and deforestation in Indonesia has inspired the use of lesser-known wood species, which are potentially abundant and so far has not much been utilized. Utilization of these woods should be imposed not only of the stem wood but also of the branch-wood portions. Schizolobiumamazonicum Ducke treeis one of those lesser-known species, and growing fast with an MAIof3.68 cm/year.In Indonesia this species is only found in the Purwodadi Botanical Garden. A research was conducted to study the basic characteristics (anatomical aspects and chemical properties) of the branch-wood portion of this species. The branch-wood materials were obtained from the Purwodadi Botanical Garden situated in Pasuruan (East Java). The specimens used were the first branch of the trunk (stem) of nine-year old S. amazonicum tree (= 29.46 cm). The branch-wood samples were then examined for the anatomical aspects (macroscopic and microscopic characteristics) and chemical properties (chemical composition). Results revealed that the anatomical properties of S.amazonicum branch-wood exhibited close similarities to those of sengon wood; it was light in appearance and white in color. Its fiber averaged about 1500 μm, and based on the fiber dimensions derived values the branch- wood fiber of this species was categorized into first-class quality for pulp and paper manufacture. Further, the chemical composition of this branch-wood compared favorably with that of sengon and mangium wood. The composition of extractive content thatsoluble in alcohol-benzene; lignin; holocellulose; and α-cellulose of this branch-wood were 2.46; 28.71; 80.64; and 50.47%, respectively. The overall assessment implied that the branch-wood portion of S.amazonicum tree affords favorable potential to be developed as raw material for pulp and paper manufacture. Also, considering that both sengon and mangium woods were already used in the pulp and paper industries as well as the trees are used for the establishment of industrial plantation forests (HTI), therefore S.amazonicum trees, as fast- growing species,are also promising for the establishment of pulp/paper-HTI for their branch-wood.
Karakteristik LVL Lengkung dengan Proses Kempa Dingin Characteristic of LVL Bent by Cold Press Process Darmawan, Teguh; Dwianto, Wahyu; Amin, Yusup; Prasetyo, Kurnia Wiji; Subiyanto, Bambang
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 7, No 2 (2009): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

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Abstract

Bending LVL (Laminated Veneer Lumber) is a more effisien method to manufacture bent wood components compare to other methods in raw materials point of view. The Bending LVL was made from Sengon veneers by cold press process with variation of Water Based Polymer-Isocyanate adhesive of 250, 280, 310 g/m2 and bend radius of 200,300, 400 mm. The results showed that the physical properties of Bending LVL made by using Water Based Polymer-Isocyanate adhesive and cold press process was fit with JAS 1639/1986 standard. The optimum adhesive concentration and bend radius was 250 g/m2 and 20 cm, respectively
Pengembangan Papan Komposit dari Limbah Perkebunan Sagu (Metroxylon sago Rottb.) (Development of Composite Board made from Sago (Metroxylon sago Rottb.) Plantation Waste) Kusuma, Sukma S; Ruslan, Ruslan; Daud, Muhammad; Wahyuni, Ika; Darmawan, Teguh; Amin, Yusup; Massijaya, Muh. Y; Subiyanto, Bambang
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 8, No 2 (2010): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

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Abstract

Plantation waste has gained increasing attention as an alternative raw material for use in the manufacture of composite boards, i.e. waste of sago plantation. Medium density composite boards were made from zephyr of sago midrib to evaluate the effects of resin and adhesive content levels. The boards were fabricated using polyurethane (PU) and phenol formaldehyde (PF) resin with three levels of adhesive content i.e. 10%, 12%, and 14%. Physical (moisture content, density, water absorption, and thickness swelling) and mechanical (Modulus of Rupture, Modulus of Elastisity, Screw Holding, and Internal Bonding) properties of composite board were evaluated according to JIS A 5908-2003 standard. Research result showed that properties of composite board made from sago frond with 14% content level of polyurethane adhesive better than other composite board. Based on composite board properties, the board was suitable as building raw material and furniture i.e. partition, cupboard, table, and roof.
The Physical and Mechanical Properties of Branch Wood of Schizolobium amazonicumDucke Amin, Yusup; Wahyuni, Ika; Darmawan, Teguh; Dwianto, Wahyu; Sunarko, Sunarko
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 9, No 2 (2011): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

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Abstract

One of the efficiency use of wood resources can be done by promoting the utilization of lesser-known species. However, high demand of familiar woods such as teak, kamper, meranti, mahoni, albizia, and acacia wood has limited the utilization of lesser-known species. The main purpose of this research was to determine the physical and mechanical properties of the branch-woodof Schizolobium amazonicum Ducke, one of lesser-known and a fast-growing species, and had recomonded its utilization. The physical and mechanical properties tested on this research were wood density, dimensional stability, Modulus of Elasticity (MOE), Modulus of Rupture (MOR), and compression strength parallel to grain. The sample testing refers to British Standard (BS 373, 1957). The result shows that the branch-wood of S.amazonicum has physical and mechanical properties as well as other fast-growing species, e.g. albizia wood. According to its density and MOR values, the S. amazonicum is classified as strength class of IV-III and it is possible used for light construction, furniture and plywood raw material.Key words: lesser known species, physical and mechanical properties, Schizolobiumamazonicum, strength class.
Lime Pretreatment on Jabon Wood to Improve Its Reducing Sugar Yield Amin, Yusup; Syafii, Wasrin; Wistara, Nyoman J; Prasetya, Bambang
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 2 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

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Abstract

The purpose of this study was to determine the performance of enzymatic hydrolysis on lime pretreated jabon wood (Anthocephalus cadamba Miq). Proceeding hydrolysis process, the morphology and crystallinity changes of pretreated jabon were also examined. In the present study, jabon wood meal was put into digester and then lime was loaded at varied lime loading, i.e. at 0.1, 0.3, and 0.5 g Ca(OH)2 g-1 of dry biomass in 90 ml of water. The slurry was then homogenized and heated in the oil bath at 100, 125 and 150 C for 2, 4 and 6 hours. Enzymatic hydrolysis was performed in accordance to the NREL procedures using a cellulase enzyme. The enzyme loading variation was 10, 20 and 40 FPU g-1 of the substrate. the RSY of pretreated jabon increased up to 9.7 folds from that of its control. The highest RSY was obtained for pretreatment with 0.5 g Ca(OH)2 g-1 dried biomass at 150 °C for 4 hours and hydrolyzed with 40 FPU of cellulase (118 mg equivalent glucose g-1 dry biomass). This yield was comparable with 14.4% More than a third of the lignin and hemicellulose content (45.83 and 65.52%) were degraded by lime pretreatment.Keywords: enzymatic hydrolysis, jabon wood, lime pretreatment, reducing sugar yield
EXPLORATION OF POTENTIAL TREE SPECIES IN SUMBA ISLAND Lestari, Eka; Amin, Yusup; Pramasari, Dwi Ajias; Dwianto, Wahyu
Teknologi Indonesia Vol 41, No 1 (2018)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (16.054 KB) | DOI: 10.14203/jti.v41i1.446

Abstract

ABSTRACTSumba Island is a part of Wallace region which located in between Asia and Australia continents. Therefore it has a lot of endemic flora and fauna species. Laiwangi Wanggameti National Park (LWNP) is one of area in Sumba Islands which represented of this condition. The aim of this study is to determine the potential of tree species in Sumba Island based on strength class and commercial class. The wood samples were taken from 9 plots by wood increment borer at 1.3 meters height (breast height). The physical properties (specific gravity) were measured to determine the wood strength classes. The results found 35 species of potential tree species which can be classified into strength class II (13 species), III (19 species), IV (2 species), and V (1 species). Based on commercial classes, 63% of the tree species were classified into lesser known timbers. Furthermore, we think the potential tree from LWNP can be used for research purpose in forestry, especially in domestication study. Keywords: wood strength class, commercial class, bor riap, Laiwangi Wanggameti National Park, domestication ABSTRAKPulau Sumba merupakan bagian dari kawasan Wallacea yang berada di antara Benua Asia dan Australia. Oleh karena itu, pulau ini memiliki banyak flora dan fauna endemik. Taman Nasional Laiwangi Wanggameti (TNLW) adalah suatu wilayah di Pulau Sumba yang merepresentasikan kondisi secara umum di kawasan tersebut. Tujuan dari penelitian ini adalah untuk menentukan jenis kayu potensial di Pulau Sumba berdasarkan kelas kuat dan kelas komersial. Sampel kayu diambil dari 9 plot dengan menggunakan bor riap pada ketinggian 1,3 meter (setinggi dada). Sifat fisik (berat jenis) diukur untuk menentukan kelas kuat kayu. Hasil menunjukkan bahwa ditemukan 35 jenis kayu yang potensial yang dapat diklasifikasikan ke dalam kelas kuat II (13 jenis), III (19 jenis), IV (2 jenis), dan V (1 jenis). Berdasarkan kelas komersial, 63% jenis kayu yang didapatkan merupakan jenis kayu yang kurang dikenal. Oleh karena itu, jenis-jenis kayu yang potensial dari TNLW ini dapat digunakan untuk kepentingan penelitian di bidang kehutanan, lebih khususnya pada penelitian tentang proses domestikasi jenis-jenis tersebut. Kata Kunci: kelas kuat kayu, kelas komersial, increment borer, Taman Nasional Laiwangi Wanggameti, domestikasi
BOTANICAL GARDEN INCLUDING INFORMATION ON THEIR PHYSICAL  AND   MECHANICAL  PROPERTIES,   NATURAL  DURABILITY,   DISTRIBUTION, PROSPECT AND OTHER SUPPORTING DATA; (2) TO ANALYZE THE LESSER-KNOWN WOOD SPECIES THAT COULD BE USED FOR  CONSTRUCTION MATERIALS AND THEN RECOMMEND THEM TO BE DEVELOPED THROUGH INDUSTRIALS PLANTATION FOREST. THE STEPS OF THE STUDY WERE FIRST COLLECTION OF DATA ON TIMBER SPECIES FROM HERBARIUM CATALOGUE; SECOND COLLECTION OF DATA ON THE PROPERTIES OF WOOD FROM VA WAHYUNI, Ika; DWIANTO, Wahyu; AMIN, Yusup; DARMAWAN, Teguh
Jurnal Ilmu dan Teknologi Hasil Hutan Vol. 1 No. 2 (2008): Jurnal Ilmu Teknologi Hasil Hutan
Publisher : Departemen Hasil Hutan, IPB

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Abstract

Botanical Garden including information on their physical  and   mechanical  properties,   natural  durability,   distribution, prospect and other supporting data; (2) to analyze the lesser-known wood species that could be used for  construction materials and then recommend them to be developed through Industrials Plantation Forest. The steps of the study were first collection of data on timber species from herbarium catalogue; second collection of data on the properties of wood from various sources; third, observation of stem morphology in the field. The result of the catalogue study showed that there were 291 timber tree species grown in Cibodas Botanical Garden which were comprised of 14 major commercial timbers, 74 minor commercial timbers, and 142 lesser known timbers. These timber species were also distributed in other parts of Indonesia. Observation in the field then generated 49 lesser-known wood species that could be used for construction materials based on their stem form and branch height. From the reference and catalogue study, it was found that there were 14 wood species belongs to strength class I to III with natural durability ranges from very durable to moderate. These woods were then evaluated based on their morphological features and prospects. Finally, it was found that only ten wood species that were suitable to be used for construction materials, i.e. Acmena acuminatissima (Blume.) Merr. & Perry (Kelat); Adenanthera microsperma Teijsm. & Binn. (Saga); Baccaurea parviflora (Muell. Arg.) (Setambun); Casuarina junghuhniana Miq. (Cemara Gunung); Garcinia parvifolia and G. beccari (Manggis Hutan); Gymnostoma sumatranum (Joogb. ex de Vriese) L.A.S. Johnson (Cemara Sumatra); Mimusops elengi L. (Tanjung); Neonauclea lanceolata and N. obtusa (Ki Anggrit). However, the result of this study needs to be supported by further study on their wood properties since the present data were mostly qualitatives. Further research concerning their silviculture, growth rate, and susceptibility to the diseases were also needed to be done.   Keywords : Lesser-known timbers, Cibodas Botanical Garden.