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All Journal Indonesian Journal of Forestry Research Jurnal Penelitian Hasil Hutan
Bambang Wiyono, Bambang
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

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CHEMICAL COMPOSITIONS OF PINE RESIN, ROSIN AND TURPENTINE OIL FROM WEST JAVA Wiyono, Bambang; Tachibana, Sanro; Tinambunan, Djaban
Indonesian Journal of Forestry Research Vol 3, No 1 (2006): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2006.3.1.7-17

Abstract

This study was conducted to identify chemical composition of merkus pine resin, rosin and turpentine oil. Initially, pine resin was separated into neutral and acidic fractions with an aqueous 4% sodium hydroxide solution. After methylation, the fraction containing turpentine oil and rosin were analyzed by gas chromatography (GC), and gas chromatograph mass spectrometry (GC-MS), respectively. The neutral fraction of pine resin and turpentine oil mainly consisted of a-pinene, D-3-carene and b-pinene. Based on mass spectral comparison, the major constituents of the acidic fraction and rosin were identified as sandaracopimaric acid, isopimaric acid, palustric acid, dehydroabietic acid, abietic acid, neoabietic acid, and merkusic acid. The major component of the acidic fractions was palustric acid, while that of rosin was abietic acid. Using TC (tough column) 1 and TC 5 columns, levopimaric acid could not be separated from rosin or acidic fraction of pine resin of Indonesian Pinus merkusii.
EFFECT OF REMOVING OLEORESIN WITH VARIOUS CHEMICAL COMPOUNDS ON PHYSICAL AND MECHANICAL PROPERTIES OF KERUING WOOD (DIPTEROCARPUS SPP.) Wiyono, Bambang; Nurwati, Nurwati
Indonesian Journal of Forestry Research Vol 4, No 1 (2007): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2007.4.1.53-60

Abstract

Keruing  (Dipterocarpus spp.)  was  the  second  important  wood  export of   Indonesia. Unfortunately, this wood contains oleoresin that hinders its utilization. Currently, the method used to remove oleoresin from keruing is by soaking it into bollied sodium salt solution. Result of  this method is unsatisfactory because the residual heavy oleoresin might still appear on the wood surface. The study was conducted to determine suitable chemical compounds for removing oleoresin from keruing, and the effects on physical and mechanical properties of the wood. Four types of chemical compounds were tested, i.e. sodium chloride, oxalic acid, sulfuric acid, and nitric acid, each at the concentrations of  0.5 percent, 1.0 percent, and 1.5 percent. Wood samples were soaked in the boiling solution at different concentration level for seven hours. When the solution cooled down, the oleoresin exudated out of  the wood samples was separated. The oleoresin was weighed for recovery determination after air dried, and the wood samples were cut into smaller-sized specimens for the physical and mechanical testing (MOE, MOR, compression parallel to grain, hardness and density). Results showed that sulfuric acid was the best chemical compound for removing oleoresin, and the higher the concentration the greater the oleoresin recovery. The second best chemical compound was nitric acid at an optimum concentration of one percent. The soaking of keruing in sulfuric acid and oxalic acid solution resulted in paler wood color compare with the untreated wood sample. Nitric acid solutions caused the color of the wood surface to turn into yellow brownish. The physical and mechanical properties (MOE, MOR, compression parallel to grain, hardness and density) of the oleoresin-removed keruing were slightly lower than the untreated (control) samples.
PENGARUH PELARUT ORGANIK DAN WAKTU PERKOLASI TERHADAP SIFAT OLEORESIN KULIT KAYU MANIS Wiyono, Bambang
Jurnal Penelitian Hasil Hutan Vol 8, No 6 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1991.8.6.219-222

Abstract

Tfl'is paper is to 1tudy the effect of organicsolvents and percolation time on oleoresinproperties of COllBia veru bark. The organic solvents used during the percolation process to extract the oleoreain consist of ethanol and acetone. Each extraction required percolation time,  consecutively 2, 3, and 4 hou'f'fl. The temperature of each procea  was milintained at 40° C.  The experiment  was conducted u1ing the factorial design, and the trend effect.  of percolation time  was 011Bea­ sed by  using polynomial orthogonal analysis.The ?  results indicated that  the  eaential  oil and cinnamaldehyde contents  extracted  with  ethano,l aolvent were both significantly higher than those using acetone solvent. The polynomial orthogonal analysis revealed that the incieasing percolation time was linearly correlated with an increase in oleoresin yield and tiie essential oil contents. As for the ethanol the increaaein percolation time tent to decrease the cinnamaldehyde only. After  the percolation proceBB, only the ethanol after solvent could be recovered by the redistillation proeese;  ?
Co-Authors Djaban Tinambunan, Djaban Nurwati Nurwati Sanro Tachibana