Jurnal Penelitian Hasil Hutan

Yuniawati, Dulsalam, Maman Mansyur Idris, Sona Suhartana & Sukadaryati

Authors: Auxiliary Tools of Log Hauling Truck to Reduce Slipped Wheel on Soil RoadWithout Paving

Timber hauling has a main goal to remove timber from forestland to the wood processing industry or directly to consumers. The hauling should be managed efficiently, so that the smooth running of transport should be prioritized. Slip is a serious obstacle that must be anticipated when hauling using trucks. It can reduce labor productivity and increase cost of hauling. The experiment was conducted in April 2014 in the RPH Ciogong, BKPH Tanggeung, Cianjur KPH Perhutani Unit III West Java and Banten. The pur pose of research is to find out the use of auxiliary tools for reducing road slip in teak land hauling. The auxiliary tools were designed and manufactured in the workshop. The tools were then applied on the truck wheels in various slopes of slip. Results showed that: the average slip on slope class 0-8%, 9-15% and 16-25 % respectively 3.24 %, 6.11% and 7.58 % with each traction coefficient of 0.59, 0.44 and 0.36. The productivity of teak logs using the tools on slope class 0-8 %, 9-15% and 16-25% respectively 92.02 m3.km/hour,89.07 m3km/hour and 83.59 m3km/hour and production, costs of corresponding teak logs are Rp 2640.01/m3km,Rp 2737.92/ m3km and Rp 2917.27/m3km.

283-302

Authors: Dian Anggraini Indrawan, Lisna Efiyanti, Rossi Margareth Tampubolon & Han Roliadi

Indonesia's paper consumption, including wrapping paper, might steadily increase in the future and create challenge for domestic wrapping-paper production due to the dwindling potency of conventional fibrous stuffs (e.g. natural-forest woods). Alternative ligno-cellulosic fibers should be introduced, such as pioneer-tree woods potential for plantation-forest (PF),e.g.jabon and terentang; sengon PF's logging wastes; pulp/paper mill's sludge; and pineapple-leaf fibers. In relevant, trial on pulp manufacture for wrapping paper was conducted using those alternatives. Initially, each alternative-fiber was examined for their basic properties (i.e. specific gravity, chemical composition, and fiber dimensions/their derived values). The fibrous pulping employed a hot alkali semi-chemical process (except sludge). The pulp-sheet with 60 g/m basis-weight target was 2 formed from the mixture of jabon-wood pulp, terentang-wood pulp, sengon-wood pulp, sludge, and pineapple-leaf pulp (w/w) in particular proportions; then to each proportion were added additives (alum 2%, clay 5%, wax emulsion 3%, tapioca starch 4%, and rosin soap 3%); and on the resulting pulp-sheets were tested their physical, strength, and optical properties. Results revealed that the proportion regarded as the most prospective for wrapping paper comprised terentang wood pulp (20%), jabon-wood pulp (20%), sengon-wood pulp (40%), and pineapple-leaf pulp (20%). The tolerable proportion for incorporating sludge should comprise sludge (20%), terentang-wood pulp (20%), jabon-wood pulp (20%), sengon-wood pulp (20%), and pineapple-leaf pulp (20%). The presence of harmful/toxic heavy metals in the sludge which have been strongly indicated should thoroughly be accounted; and hence further experiment on their removal prior to the sludge use for wrapping paper deserves carrying out.

315-327

Authors: Efrida Basri & Jamal Balfas

In general, wood from plantation forests are dimensionally unstable, therefore, timber use are limited. This paper sobserves dimensional stability of chemically densified fast-growing teak (JCT) and jabon woods. JCT and jabon woods were impregnated using a mixture of old teak sawdust extracts and resin. The resin used were vinyl acrylic and polyvinylm acetate in three concentrations : 8, 10, and 12% (w/v),and two compositions of resorcinol resin. Results show that in general, dimensions of the impregnated wood are more stable than non-impregnated wood.Wood impregnated with the mixture of teak extract solution and resorcinol resin shows better dimentional stability than other resins.

347-363

Authors: Santiyo Wibowo & Djeni Hendra

This paper studies the information on production technology of bio-oil from gelagah grass (his paper studies Saccharum spontaneum Linn.) and its properties using fast pyrolysis. The variables used in this study are temperature 550 C and o 600 C and size of samples which are 20, 40 and 60 mesh. The results showed that highest production of bio-oil attained o from sample size 40 mesh with treatment at 550 C, with the following characteristics; yields of liquid was 30 88%, phenol.7.58, pH 2.62, specific gravity 1.1108 g/cm , heating value 25 29 MJ/kg and flame power was at slow level. Bio-oil 3.produced by this process predominantly composed of acetic acid, phenols and dan 1-hydroxy 2-propanone.

377-385

Authors: Totok K. Waluyo & Gunawan Pasaribu

"Jernang” or known as dragon's blood is one of high value non-wood forest products originated from Indonesian forest. Dragon's blood which is a red colored resin secreted from rattan's fruits has been utilised traditionally. This paper determines the antibacterial and antifungal capability againts bacteria (Basillus subtilis and Staphylococcus aureus) and fungus (Candida albicans and Aspergillus flavus). The antibacterial and antifungal capability was determined based on the in vivo wound healing test on rabbit. The result shows that in general, “jernang” provides antibacterial and antifungal capacity against bacteria and fungus. The ethyl acetate jernang extract which were effective as antimicrobial to heal the wound.