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Peronema Forestry Science Journal
Published by Universitas Sumatera Utara
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
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Articles 304 Documents
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Pemanfaatan Batang Pinang (Areca catechu Linn) Sebagai Bahan Perekat Likuida Berdasarkan Kedalaman Batang Utilization Of Areca Nut’s Stem (Areca catechu Linn) As The Wood Liquid Material According To Depth Of The Stem Listi Erawaty Simbolon; Tito Sucipto; Luthfi Hakim
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Waste areca nut’s stem (Areca catechu Linn) was one of lignocellulose natural resources potential as raw material of liquid adhesive with through liquifaction method. The part used was the outer stem (L), the middle (T) and the inner (D). The research objective was to determine the quality of adhesive and compared with a standard that was the nature of appearance, degree of acidity (pH), viscosity, density, solids content, gelatin time with SNI 06-4567-1998, free formaldehyde with  SNI 06-4565-1998 and ash content with ASTM D 1102-84. Areca nut liquid adhesive made by mixing the powder directly the third part of the areca nut’s stem 20-40 mesh at the temperature 90oC during 2 hours with technical phenol, H2SO4 98%, NaOH 50%, formaldehyde 37%. The results of the research showed that the liquid adhesive stem areca nut partially fulfill the characteristics of phenol formaldehyde adhesives for plywood according to SNI 06-4567-1998. The characteristics that fulfill such as the appearance of the outer stem were dark red and free of dirt, the pH of the three parts of the stem that was 13 (L); 11 (T and D), the density of the outer and the middle was 1.152 (L), 1.173 (T), solids content of the middle part and the inner part was 40% (T and D), the gelatin time of the three part was 332 minutes (L); 315 minutes (T); 305 minutes (D). Free formaldehyde of the three part stem fulfilled SNI 06-4565-1998 was 1.69% (L) 1.30% (T) and 1.24% (D). The liquid adhesive of outer part has characteristics resembling phenol formaldehyde adhesive  than the middle and the inner of areca nut’s stem. Key words: waste, stem of areca nut (Areca catechu Linn), liquefaction, wood liquid, adhesives qualities
PERUBAHAN KIMIA KAYU PADA GUBAL GAHARU (Aquilaria malaccensis Lamk.)HASIL REKAYASA) (Wood Chemical Changes In Gubal Agarwood (Aquilaria malaccensis Lamk.) Engineered) Chendy Herawati; Ridwanti Batubara; Edi Batara Mulya Siregar
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Indonesia is the biggest producer gaharu (A. malaccensis Lamk.) in the world with the best quality. Agarwood is elite commodity non timber forest products that have potential as an industrial raw material The research objective is measuring physical properties (water content and density) of wood tissue is induced to form the agarwood. Measuring changes in the chemical content (hemicellulose, cellulose, alpha cellulose and lignin) of wood tissue induced 12 months, 6 months, and the control of long induced agarwood. Treatment in research was induced period of 6 months, 12 months and control. The analysis was done according to ASTM Standard  D 4933-99 and TAPPI. The result of research showed that the induced agarwood for 12 months had a higher density than the control, and 6 months. while the water content was not significanctly different. The extractive substances that contained in induced agarwood had a higher value than the control (the value of agarwood solubility in cold water, solubility in hot water, solubility in NaOH, solubility in alcohol and benzene). The content of hemicelluloses, cellulose and alpha cellulose in the induced agarwood  for 12 months trend to be lower than the control. Keyword: agarwood, A malaccensis Lamk., physical properties, chemical properties, induced
IDENTIFIKASI FUNGI YANG BERKEMBANG PADA BATANG SAWIT (Elaeis guineensis Jacq.) Pasca Penebangan (Identification of fungi that developed in post-harvest oil palm trunk (Elaeis guineensis Jacq.)) Hisar panjaitan; Ridwanti Batubara; Yunasfi Yunasfi
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The research aims to know the kinds of fungi that grow on palm trunk after logging in the process of rejuvnation of palm. The research was conducted in Kebun Percobaan Tambunan A Universitas Sumatra Utara. Fungi isolated and identified in Microbiology Laboratory of the Department of Biology Faculty of Mathematics and Natural Sciences, University of North Sumatra. The research was conducted from September 2011 until November 2011. The results obtained, four types of fungi found on oil palm trunks that have been process of rejuvnation, wich is taken from four palm  as a sample. for each palm trunk, made ​​a division at the base of the trunk, middle, and end of the trunk. From the results of isolation obtained the Arthrinium phaespermum, Chaetomium brasiliense, Penicillium simplicissimum and Ulocladium botrytis as a result of identification from the sample. The type of fungi that most identified from the palm trunk is a type of fungi Arthrinium phaeospermumKey words : Elaeis guineensis Jacq, Fungi, Palm trunks
Fiber Plastic Composite made from Old Corrugated Paper and Polyprophylene (PP) with Addition of Maleic Anhydride (MAH) and Benzoil Peroxide (BP) Nova Tampubolon; Luthfi Hakim; Tito Sucipto
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The research of using old corrugated paper fiber and used recycled polyprophylene plastic ore as the raw material of making fiber plastic composite board was useful to give solution the waste problem. The purpose of research was to evaluate physical properties (density, moisture content, water absorbtion, thickness swelling) and mechanical properties (modulus of elasticity, modulus of rupture, internal bond, screw holding power)fiber plastic composite board with maleic anhydride (5% and 7%) as compatilizer and benxzoil peroxide (15%) as initiator. The composition raw materials and matrics was useful 50:50, 60:40, 70:30 with 3 replication and 25 cm x 20 cm x 1 cm for the dimention and density target 0.8 g/cm3. The raw material was made become pellet by using extruder at 100-1700C. The board were  hot press 170-1800C and conditioned for 1 weeks, to evaluate physical and mechanical properties were carried out according to JIS A 5905-2003 hardboard S20 dan JIS A 5908 (2003) particleboards type 13. The result of the research showed that physical of fiber plastic composite board did not fulfill the standard of JIS A 5905-2003 hardboard S20, except density. The testing of mechanical properties by MOR, IB and KPS was fulfill standar JIS A 5905-2003 hardboard S20 dan JIS A 5908 (2003) particleboards type 13. Standard JIS A 5908-2003 S20 hardboard full value in testing physical properties, namely the density testing, while in the testing of mechanical properties, namely the testing of MOR. Fiber plastic composite board suitable for using exterior and interior. Based on physis and mechanical properties testing, the best value of fiber plastic composite was composition 30:70 MAH 5%. Keyword: old corrugated paper, used recycled polyprophylene plastic ore, MAH and BP, FPC board, physiscal and mechanical properties.
Sifat Antirayap Ekstrak Kulit Bawang merah (Allium cepa L.) (Antitermites Properties of Onion Shell Extract) Margaretha Uliartha Sari; Rudi Hartono; Luthfi Hakim
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The aims of these researchs were to found the extract content of Allium cepa L.,                to evaluated weight lost of paper disc, to evaluated the toxicity level of Allium cepa L. extracts based on mortality rates and to evaluated feeding rate value. Research was done by extracting       a sample with methanol then partitioning with n-Hexane. Extract with concentration of 2%, 4%, and 6% were used to test the toxicity of extract for Coptotermes curvignathus termites. The results showed extract content of Allium cepa L. was 16,62%. Termite mortality rate was 100% with concentration  2% and 4% on day 7th while the concentration of 6% on day 5th. So extract with the large concentration had higher mortality of termite than the lower. The weight lost of paper disc     was around 3,72%–11,04% and feeding rate of termite was around 0,25 mg–0,73 mg. Keywords: extract of Allium cepa L., termite mortality, weight lost percentage, C. curvignathus
Fiber-Plastic Composite Made of Old Corrugated Paper and Polyethylene (PE) with Maleic Anhydride (MAH) and Benzoyl Peroxide (BP) Rumondang Bulan Batubara; Luthfi Hakim; Tito Sucipto
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The research of utilizion corrugated fiber and plastic polyethylene as the raw material of making fiber plastic composite (FPC) board was useful to give solution the waste problem. The purpose of research was to evaluate physical properties (density, moisture content, water absorbtion, thickness swelling) and mechanical properties (modulus of elasticity, modulus of rupture, internal bond, screw holding power) composite board of fiber corrugated paper and comparing the use of polyethylene plastic (PE) with maleic anhydride as compatilizer and benxzoil peroxide as initiator and comparing the physical and mechanical properties FPC board wtih testing the physical and mechanical properties the composite board were carried out according to JIS A 5905-2003 hardboard S20 dan JIS A 5908 (2003) particleboards type 13.The result of the research showed that physical the fiber plastic composite board did not fulfill the standard of JIS A 5905-2003 hardboard S20, except density, water absorption and the thickness swelling. The testing of mechanical properties did not fulfill standar JIS A 5905-2003 hardboard S20 dan JIS A 5908 (2003) particleboards type 13, except internal bond and screw holding power. FPC board suitable for using exterior and interior, because by on physis and mechanical properties testing, the best value of fiber plastic composite was composition 60:40 MAH 5%. Keywords: fiber corrugated paper, polyethylene, fiber plastic composite, physiscal and mechanical properties.
Financial Analysis and Marketing of Sugar Palm (Arenga pinnata) Fruit at Simantin Village, SubDistrict of Pematang Sidamanik, District of Simalungun Astri Winda Siregar; Agus Purwoko; Tri Martial
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Sugar palm (Arenga pinnata) is a plant that almost all its parts can be utilized. One of the products is sugar palm fruit that are processed into kolang-kaling. Today, information of kolang-kaling economic value is limitted, so that people were uninterested in process it. Therefore, this research aims to analyze the financial analysis and marketing of sugar palm fruit. The research had done in Desa Simantin, Kecamatan Pematang Sidamanik, Kabupaten Simalungun. Respondents of this research were the business actors of processing sugar palm fruit into kolang-kaling and the business actors of selling kolang-kaling. The method of data analysis were financial analysis and marketing analysis. The results showed that the processing of kolang-kaling business worth the effort because the value of R/C ratio was more than 1 that is 2,75 with number of BEP volume production was 272,33 kg, number of BEP price was IDR 909,54 and the duration payback period was after 2 times production. Flow of kolang-kaling marketing started from processors, collectors, retailers, and up to consumers. The marketing margin was IDR 3500,00 with share of profit (Ski) of collector area equal to 28.57% and share of profit (Ski) of retailers equal to 71.43%. Keywords: sugar palm fruit, financial analysis, marketing margin, kolang-kaling
Study of The Processing and Financial Analysis of Berembang Fruit (Sonneratia caseolaris) as Food and Drink Material in Deli Serdang Regency Inggrid Tarihoran; Agus Purwoko; Kansih Sri Hartini
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Utilization of mangrove fruit become to food and drink very rarely published. One of mangrove fruit used was fruits of Sonneratia caseolaris.Not many peoples know about these berembang fruits processing but the people in the lictoral Deli Serdang has begun berembang fruits processing as material food and drink. This research aims to determine berembang fruit processing as material food and drink, to determine the financial feasibility berembang fruit processing, and to determine for berembang fruit processing development of strategy. To determine the berembanng fruit processing is done by interview and questionnaire, while for financial using cost and value analysis, Revenue Cost Ratio (R/C) analysis, Payback Period (PP) analysis, Break Event Point (BEP) analysis and for  development of strategy using by SWOT analysis. The result showed in traditional that processing of berembang fruit, while the results of the financial analysis known that berembang fruit processing become a lunkhead and syrup are feasible because of the R/C ratio greater than one (1,39 and 1,42). Based on the strategy SWOT, the most strategy needed was WO strategy. PP lunkhead and syrup of 4.9 and 4.3 and BEP production volumeof lunkhead and syrup of (72 and 73 units) are still below the production volume of 100 units. Based on the SWOT strategy, a strategy that is needed is a strategy ST, WT, SO, and WO. Key words : Sonneratia caseolaris, financial analysis, berembang fruit, SWOT analysis
Jenis Rotan, Produk Rotan Olahan Dan Analisis Ekonomi Pada Industri Pengolahan Rotan Komersial di Kota Medan Type Rattan, Rattan Products Processed and Economic Analysis On Commercial Rattan Manufacturing in Medan Obbi Pardamean Pane; Irawati Azhar; Tito Sucipto
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Rattan processing as non-timber forest production creates a range of activities for a variety of rattan industry. This reasearch aim to describe the existence and development of rattan processing industry in the city of Medan, the type and price of raw materials processed rattan and rattan products are traded, and analyze the feasibility of rattan processing industry in the city of Medan. Data obtained through the census rattan processing industry in 21 districts in the city of Medan and guided interviews with selected rattan processing industry and analyze the feasibility in CV Haramas and UD Citra Rotan. The results of reasearch showed that the rattan processing industry is only found in five districts namely 15 industries in Medan Petisah, 3 industries in Medan Helvetia, 3 industries in Medan Sunggal, 2 industries in Johor and 1 industry in Medan Tuntungan. The type and price of the type genera of Calamus rattan and Daemonorops have Rp.2.000-Rp 20,000 per stem or per kg. Processed rattan products are tables, chairs, baskets, hoods serving, place parcel rattan, wicker mirror and semi-finished table with selling prices between 8,000-Rp.400.000 per unit. Based on the R/C ratio and the BEP of both products in the CV. Haramas viable and economically beneficial to the R/C ratio >1 and the lowest BEP 219 of the 300 units (chair products) in CV. Haramas and UD. Citra Rotan the lowest BEP 90 of 100 units from ratttan basket. Keywords: rattan, processed rattan products, rattan industry, economic analysis
The Diversity of Macroscopic Fungi in The Education Forest of University of Sumatera Utara, Tongkoh Village, Karo District, North Sumatra Province Santa Dewi Bornok Mariana Tampubolon; Budi Utomo; Yunasfi Yunasfi
Peronema Forestry Science Journal Vol 2, No 1 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The research of the diversity of macroscopic fungi in Education Forest of University of North Sumatra has never been reported. The research has been conducted at altitude: < 1000 m above sea level; 1000 – 1500 m above sea level; and ≥ 1500 m above sea level, on five different trail on each altitude category. The length of observation trail is 100 m. The first trail on each altitude category is determined with purpossive sampling method, then the next trail was determined with systematic sampling method. The observation and the collection of species has done exploratively in the plot sampling, size 20 m x 20 m. The results showed that was found 45 species of macroscopic fungi which consist of 2 divisions, 4 classes, 10 orders, and 19 families, where numbers of species of macroscopic fungi was found on each of altitude category consecutively 30 species; 42 species; and 32 species. The macroscopic fungi was found commonly living on the decayed wood and litter, and then a part of living on the living wood. Keywords : Macroscopic fungi, diversity of macrofungi, Basidiomycota, Education Forest of University of North Sumatra.

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