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Karti Rahayu Kusumaningsih
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Fakultas Kehutanan INSTIPER Gd. Jati Jalan Nangka II, Maguwoharjo, Depok, Sleman Yogyakarta
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INDONESIA
Jurnal Wana Tropika
Published by Institut Pertanian Stiper Yogyakarta
ISSN : 20887019     EISSN : -     DOI : https://doi.org/10.55180
Core Subject : Agriculture, Social,
Agriculture, Biological Sciences & Forestry Environmental Science
Wana Tropika first published in 2011 by Department of Forestry, Faculty of Forestry, Stiper Agricultural University. Jurnal Wana tropika, the official journal of the Indonesian Society for Forestry, publishes primary research paper, review article, policy analysis and research notes and preliminary results in all areas of forestry.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 4 Documents
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Search results for , issue "Vol 1 No 2 (2011)" : 4 Documents clear
AKTIVITAS ANTI RAYAP TANAH (Coptotermes curvignathus Holmgren) TIGA FRAKSI EKSTRAK KAYU PELANJAU (Pentaspadon Motleyi Hook.f) Yusro, Fathul
Jurnal Wana Tropika Vol 1 No 2 (2011)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Aim of this research is to know activity of tree fractions (diethyl ether, ethyl acetate and residue) pelanjau wood extracts (Pentaspadon motleyi Hook.f) against Coptotermes curvignathus Holmgren. Method of the research was anti termites test with parameter termites mortality and samples weight lost. Research result show highest mortality from ethyl acetate, diethyl ether and residue fractions with 100% mortality in concentration ≥5%, ≥7,5% and 10%, respectively. Sample weight lost from ethyl acetate, diethyl ether and residue fractions was 9,91-3,89%; 34,37-13,50% and 35,25-18,21%, respectively. Keywords: Pelanjau wood (Pentaspadon motleyi Hook.f), tree fractions, termites, Coptotermes curvignathus Holmgren
PENGARUH TEMPERATUR DAN PENAMBAHAN METANOL PADA PROSES ESTERIFIKASI - TRANSESTERIFIKASI TERHADAP SIFAT-SIFAT MINYAK NYAMPLUNG Woesono, Hastanto Bowo; Webliana, Kornelia
Jurnal Wana Tropika Vol 1 No 2 (2011)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

The problem which has to be solved when using nyamplung oil (Calophyllum inophyllum) as an alternative fuel is the excessive content of free fatty acid in the oil. One way of reducing the free fatty acid in the oil is by esterification and tranesterification process. Hence, the research is conducted to identify the effect of temperature and methanol addition on the esterification and transesterification processes on the nature of nyampung oil and to assess the composing component of nyamplung oil. The research was conducted in the laboratory of Forest Yield Technology and central laboratorium of INSTIPER. The steps included extraction, deguming, esterification I, esterification II and transesterification with the temperature var iation of 60° C, 80° C, and 100° C and the mol comparison of nyamplung oil of 4:1, 5:1 and 6:1, and the examined parameters were water content, viscosity, acid level, soap level, free fatty acid content and iod level. The result indicated that the temperature treatment and methanol addition significantly affected the nature of nyamplung oil after the tranesterification. The analysis of nyamplung oil nature after the esterification I and esterification II indicated that the water contents were 0.38 and 0.21 %, the densities were 0.9630 and 0.9325 g/ml, the viscosities were 110 and 74.5 cP, the acid levels were 58.6893 and 31, 4359 KOH/g. the contents of free fatty acid were 29.5016 and 15.8017, the soaping levels were 192, 4127 dan 180, 2165 mg KOH/g, the iod levels were 68.7259 and 65. 9123 mg/g with the appearance of esterification I of dark and aqueous and esterification 11 reddish and aqueous. the nature of nyamplung oil after the transesterification process was that the water content was 0.1501%, the density was 0.8832 Wml, the viscosity was 51.1296 eP, the acid level was 9.8935 KOH/g, the free fatty acid content was 5.0168 %, the soaping level was 172.9321 KOH/g, the iold level was iod 77.4985 mg/g, with the appearance of yellow and aqueous. Keywords: Temperature, methanol comparison, transesterification process, nyamplung oil properties
PENINGKATAN KUALITAS LIST PROFILE DENGAN PERLAKUAN KOMPOSISI BAHAN PEREKAT Sushardi; Yuniarto
Jurnal Wana Tropika Vol 1 No 2 (2011)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

List profile is a mineral board product that more and more interested people use it. One of its advantage is the cheap cost, quick availability and more resistant against damaging organism attacks. From economy’s point list profile with adhesive plaster and filler rofing more expensive, so it required another type of adhesive which is stronger but cheaper cost. This research has the objection to find out the filler type and content of gips with low cost. The design of this research is complete random design continued by Tukey test. The factors were the filler type using “mendong” and rofing, and adhesive contents of 720 grams, 780 grams, and 840 grams to observed the water content, density, modulus of elasticity, modulus of rapture and its adhesive strength. The result indicated an interaction between the filler type and its content both influenced the water content and density. The average of water content, density, modulus of elasticity, modulus of rapture and adhesive strength were 17,6787-20,0729 %, 0,9575 – 1,1489 g/cm3 , 3172,7619 – 4831,6183 kg/cm2 , 25,8452 – 30,8413 kg/cm2 , and 1,9006 – 3,4287 kg/cm2 respectively. Keywords: List profile, mendong, rofing, gips
MENGENAL BEBERAPA MODEL SILVOFISHERI DAN FUNGSINYA ( KASUS REHABILITASI MANGROVE DI KABUPATEN PEMALANG DAN BREBES) Salam, Heru; Kaliman, Windrati
Jurnal Wana Tropika Vol 1 No 2 (2011)
Publisher : Fakultas Kehutanan Institut Pertanian STIPER Yogyakarta

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Abstract

Mangrove is known as type of ecosystem has such of multifunction. what more has strategic function service, it is able to support and stabilice strong coastal and land ecosystem. Therefore, in every single handling,especially in the effort on rehabilitation,it should focus on the needs of all stake holders involving in the use of mangrove.The application of silvofishery model in rehabilitation purpose is assumed to fullfil the multifunction criteria,so it has been applied and developed by most of the community.But on the other side it is worried that the less of peoples optimally support the achievement of rehabilitation purpose.Under this condition, modification of silvofishery should be planned without obeying the need of people and other institutions to the use of mangrove. Keywords: silvofishery model ,rehabilitation

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