Jurnal Penelitian Hasil Hutan

101-110

Authors: Gunawan Pasaribu, Gusmailina & R. Esa Pangersa G.

The objective of this study was to determine the quality of aromatherapy candles and soaps that produced by the addition of Dryobalanops aromatica oil. Aromatherapy candles are made in several formulation variations, and then tested on 30 respondents to know the preference for candles. Parameters measured are prefereed for before candle burned, after burned and the perceived effects of aromatherapy. The soap is madein different formulations by adding Dryobalanops aromatica oil at 2, 4 and 6%, then tested the physico chemical properties. Results show that there are significant differences of respondent preference between formulations before the candle is burned and formula with the lowest concentration of dryobalanop oil was most preferred. It does not indicate any preference difference between formulations after the candle is burned. However, the trend indicated that candle with medium oil concentration is more accepted. There were no significant differences in aromatherapical effects on various formulas. Aromatherapy candles formulation with the lowest concentration of dryobalanops oil is the most acceptable formulation that gives a positive effect on many respondents. Furthermore, the physico-chemical properties of the soap showed that water content and amount of fatty acids are below the standard limit, but the value of free fatty acid and saponified lipid levels could meet the ISO standards. Value of qualitative minerals content is negative. It was found that borneol compound as the Dryobalanops aromatica identifier in the form of endo borneol. The other encountered chemical compounds are caryophylene, alpha pinene, alpha humulene, alpha terpineol and dl-Limonene.

127-135

Authors: Ina Winarni,Sri Komarayati & T.Beuna Bardant

Biomass is an alternative potential raw materials for biofuels or bioethanol production. This paper studies bioethanol production of the oil palm trunk waste. The trunk was divided into three parts; parenchym (P),vascular bundle (VB) and the mixture of parenchyma and vascular bundle (PVB. Results show that sugar content reduction of all treatments (using surfactant) before fermentation is higher than that without surfactant(control)at 10 and 15 FPU/g substrate of cellulase concentration.The highest ethanol content (1.63%) was recorded from parenchyma with 15 FPU/g substrate of cellulase concentration.

147-155

Authors: Sihati Suprapti, Djarwanto & Andianto

The resistance of six wood species against eight strains of destroying fungi was studied. Six wood species of ketapang(Terminalia complanata K.Sch.),pala hutan(Gymnacranthera paniculata Warb.),bipa(Pterygota horsfieldii(R.Br.)Kosterm.),kelumpang (Sterculia shillinglawii), manggis (Pentaphalangium parviflorum)and lancat (Mastixiodendron pachyclados Melch.), were observed using Kolle-flask methods. Wood samples of inner and outer parts of the log were prepared from each species. Results show that M. pachyclados is classified as resistant (class II),P. horsfieldii is moderately resistant (class III), while the other four species are not-resistant (class IV) against destroying fungi.The average weight loss of the inner part is lower than that of the outer part logs, then both groups are classified as not-resistant wood (class IV). The lowest decay resistance is obtained from outer part of G. paniculata exposed to Pycnoporus sanguineus, while the highest decay resistance is taken from outer part of M.pachyclados exposed to Tyromyces palustris. The fungal ability to decay wood from the highest to the lowest are P. sanguineus, Polyporus arcularius, Polyporus sp.,T. palustris, Schizophyllum commune, Lentinus lepideus, Phlebia brevispora, Chaetomium globosum, respectively