Jurnal Penelitian Hasil Hutan

243-252

Authors: Ary Widiyanto & Mohamad Siarudin

Asteromyrtus brasii,is one of the cajuput oil tree species in Wasur National Park, Merauke, Papua. However, theinformation on the chemical compound and physical properties (qualities) of cajuput oil produced from this species is, stilllimited.Thisresearchaimedtomeasurethechemicalcompoundandphysicalpropertiesof cajuputoildistilledfromthe leaves of trees which grow at the Wasur National Park.Chemical compound analysis is using Gas Chromatography and Mass Spectrometer method (GC-MS method).The analysis on the physical properties was applied to the cajuput oil distilled using steam method. The distillation lasted for 4-5 hours, and every interval of 30 minutes the distilled cajuput oil collected cumulatively and the total collected oil was examined for the yield and phsyco-chemical properties.Thequalitiesof theoverallcajuputoilfrom treeleavescouldn'tsatisfythestandard(SNI06-39542006) because of the specivic gravity is below 0.9 and optical rotation of 9.8. Analysis result with GC-MS show there are 29 peak, with 5 of the them has the higher intensity identified as 1,8 cineole (34,88% concentration),Trans-.Beta.Ionon-5,6-Epoxide (21,26%), Formamide (CAS) Methanamide (11,20%), Acetic acid (CAS) Ethylic acid (8,14%) andAlphapinene(4,39%).

263-270

Authors: Djarwanto & Sihati Suprapti

Five wood species from Dipterocarpaceae have been exposed to ten fungus strains, then were evaluated using SNI 7207:2014. The results shows that the most capable fungi to decay wood from the highest to the lowest are Schizophyllum Trametes Pycnoporus sanguineus Tyromyces palustris Phlebia brevispora , sp. HHBI-209, sp. HHBI-371,Dacryopinax spathularia, and (brown rot fungi). The highest weight loss was occured on,Dipterocarpus glabrigemmatus,S.commune While the lowest weight loss was on.Dipterocarpus glabrigemmatus Shorea hopeifolia L. lepideus Dipterocarpus.

283-296

Authors: Efrida Basri & Jamal Balfas

Previous research findings have shown that the fast grown teak (JCT) has lower physical, mechanical and durability performancesthanthoseof thetraditionalteak.Hence,aspecificeffortisrequiredtoincreasetheJCTquality.Thisresearch is aimed to improve the quality of JCT and rubber wood through impregnation of extracts and resin.This study used extracts from traditional teak wood sawdust dissolved in methanol solution. The teak extractive solutions were then impregnated into wood structure of JCT and rubber wood with various solution concentrations according to additional organic resin. The organic resins used in this study consist of shellac and damar, which were added at three weight concentration levels of 4, 6 and 8% of the extract volume. The results show that the impregnation of extractive solution into JCT and rubber wood increased dimentional stability of both woods with Anti Shrink Efficiency (ASE) value exceeds 50%, compared to the traditional teak. The addition of shellac and damar resin in the teak extractive solution significantly result in better dimensional stability of both treated woods proportionally in accordance to the resin concentration.

329-340

Authors: Sukadaryati, Gunawan Santosa, Gustan Pari Dodik Ridho Nurrochmat & Hardjanto

For the formulation of policystrategiesontheuse of environmentally friendlystimulant in the production of pineresin, thestudyof innovationstimulantisanecessity.Thisstudyaimedtoidentifytheuseof stimulantsmadefromastrongacid (inorganic),ETRATandwoodvinegaronpinetapping.Researchresultsrevealedthattheuseof stimulantscouldincrease resinfluxandextend.InorganicstimulantproducedresinmorethanETRATandwoodvinegarpercollectioninareawith elevation above 500 ASL and below 500 ASL. The use of inorganic stimulant, however, caused the change of wood colour that will be dark brown to reddish even that going into as far as to the pith of wood. Meanwhile, the use of organic stimulant doesn't cause the change of colour in wood significantly.Therefore the use of stimulants on tapping pine needs to consider the negative effects of trees's health, workers and the environment.The economic aspect that should be persued to achieve the financial target, is not the main factor only but the ecological and sosial aspects to achieve a yield sustainability and tree producingarerequared.