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All Journal Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society
Ganis Lukmandaru
Department of Forest Products Technology, Faculty of Forestry, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry

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Oleoresin Yield and Gum Rosin Properties from Sulawesi and Sumedang Sub-lines of Pinus merkusii Wood Sheany Citra Sukma Wijaya; Sigit Sunarta; Suryo Hardiwinoto; Daryono Prehaten; Wdiyatno Widiyatno; Ganis Lukmandaru
Wood Research Journal Vol 16, No 1 (2025): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2025.16.1.9-14

Abstract

Progeny testing can be performed to reach high oleoresin production from Pinus merkusii. This study aimed to determine and compare the oleoresin yields and rosin properties of 15-year-old Pinus merkusii wood of the Sumedang and Sulawesi sub lines from the KPH Banyumas Barat plantation. Tree diameter and oleoresin yield were observed in 20 individual trees of each sub-line. Tree tappings were conducted by the drilling method for three days, which was replicated for five times over a 15-day observation period. Gum rosin samples were obtained from all trees by the hydro-distillation method. The results showed that the tree diameters at breast height and oleoresin yields of the Sumedang sub-line fell in the ranges 22.0–34.2 cm and 10.8 51.2 g/tree/3 days, respectively, whereas those of the Sulawesi sub-line fell within the ranges 19.4–31.2 cm and 11.6–50.4 g/tree/3 days, respectively. Based on t-test results, no significant difference was found between the two sub-lines. The gum rosin yields were 52–79% and 55–78% for the Sumedang and Sulawesi sub-lines, respectively. With regard to rosin properties, the softening point, acid number, saponification value, toluene-insoluble content, and volatile content were 77.80 ± 4.08°C, 189.51 ± 10.51, 216.54 ± 10.51, 0.08 ± 0.11%, and 3.78 ± 3.56%, respectively, for the Sumedang sub-line and 66.35 ± 6.55°C, 78.15 ± 2.92, 189.86 ± 10.68, 208.02 ± 10.50, 0.06 ± 0.11%, and 9.82 ± 2.95%, respectively, for the Sulawesi sub-line. Significant effects of sub-line were only observed in terms of saponification value and volatile content, where the rosin from the Sumedang sub-line had better properties than the rosin from the Sulawesi sub-line. These differences indicate different compositions of chemical components of oleoresin or rosin between sub-lines.
Extractive Content and Antioxidant Activity of Cajuput Bark (Melaleuca cajuputi Powell) Bagus Praditya Harliando; Ganis Lukmandaru; Noor Khomsah Kartikawati
Wood Research Journal Vol 15, No 2 (2024): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2024.15.2.63-68

Abstract

Both wood and non-wood industries generate large amounts of residues from processes like bark peeling and removal. In the cajuput oil industry, the waste products include distillation residues and cajuput bark. The diverse extractives and chemical components found in cajuput bark have the potential for enhanced value through various applications. This study aimed to determine the chemical components, extractive content (EC), and percentage inhibition of antioxidant activity (%IAA) of cajuput bark extract to explore more effective uses of this byproduct. Cajuput bark (Melaleuca cajuputi Powell) was sourced from a 26-year-old cajuput stand in Paliyan, Gunungkidul. The bark powder was extracted using a methanol-water solvent mixture at concentrations of 40% and 80%. Extraction was conducted in water baths at temperatures of 60°C and 100°C for 120 minutes. GC-MS identified several chemical components in the methanol extract of cajuput bark, including sugars (erythritol, D-arabinose, D-lyxose, adonitol, d-galactose, D-glucitol, and L-rhamnose), fatty acids (lactic acid, glycerol, glyceric acid, malic acid, and palmitic acid), and phenolic derivatives (gallic acid and protocatechuic acid). The average extractive content of the methanol extract of cajuput bark was 4.07%, and the percentage inhibition of antioxidant activity was 40.26%.
Co-Authors Agus Ngadianto Anak Agung Gede Sugianthara Bagus Praditya Harliando Brandon Aristo Verick Purba Brandon Aristo Verick Purba Daryono Prehaten Denny Irawati Eko Prasetyo Fatimah Ayu Warahapsari Greitta Kusuma Dewi Masendra Masendra Muhammad Rafly Nugraha Noor Khomsah Kartikawati Ridla Arifriana Rizki Arisandi Saffana Ahda Labiba Sheany Citra Sukma Wijaya Sigit Sunarta Suryo Hardiwinoto Vendy Eko Prasetyo Wdiyatno Widiyatno Widyanto Dwi Nugroho