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Dr. Ratih Damayant
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Research Center for Biomaterials, Indonesian Institute of Sciences Jl. Raya Bogor Km 46, Cibinong, Bogor 16911, Indonesia
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INDONESIA
Wood Research Journal : Journal of Indonesian Wood Research Society
Published by Indonesian Wood Research Society
ISSN : 20873840     EISSN : 27749320     DOI : 10.51850/wrj
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Wood Research Journal is the official journal of the Indonesian Wood Research Society. This journal is an international medium in exchanging, sharing and discussing the science and technology of wood. The journal publishes original manuscripts of basic and applied research of wood science and technology related to Anatomy, Properties, Quality Enhancement, Machining, Engineering and Constructions, Panel and Composites, Entomology and Preservation, Chemistry, Non Wood Forest Products, Pulp and Papers, Biomass Energy, and Biotechnology. Besides that, this journal also publishes review manuscripts which topics are decided by the Editors.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Kehutanan
Articles 162 Documents
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Physico-Chemical Properties and Bioactivity of Resinous Araucaria cunninghamii extract Aishah Agustian; Ganis Lukmandaru; Rizki Arisandi
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.2025.16.1.1-8

Abstract

Resin has been identified as a promising non-timber forest product with the potential to generate high economic value. Araucaria cunninghamii is recognized as one of the most prominent sources of resin in Indonesia. This study aimed to evaluate the potential of resin from A. cunninghamii, focusing on its extractive properties. A total of 20 g of resin was extracted by separation and successive extraction methods using n-hexane, ethyl acetate, and methanol solvents. Subsequently, the n hexane extract was fractionated into neutral and acidic fractions. Subsequently, the acidic fraction underwent a saponification process, resulting in the isolation of an unsaponifiable fraction and a phenolic fraction. The components of analysis were identified through the utilization of a GC-MS analysis. The physicochemical test of the resin was conducted in accordance with the Indonesian National Standard (SNI 7636:2020), while the quantification of the total phenolic content was performed through the implementation of the Folin-Ciolceteu method. Furthermore, the measurement of antioxidant activity was conducted through 1,1-diphenyl-2-picryl-hydrazyl (DPPH) test (inhibition percentage). The results showed that the ethyl acetate extract exhibited the highest solubility. Araucaria cunninghamii contained a more dominant neutral fraction. Moreover, the highest level of total phenolic content was obtained in the n-hexane soluble fraction (6.84 mg GAE/g). A GC-MS analysis revealed the presence of oxygenated sesquiterpenes (31.5%), sesquiterpenes hydrocarbons (23.8%), and oxygenated diterpenes (19.9%) within the sample. Furthermore, the physicochemical tests exhibited ash content, acid number, and toluene insoluble content of 0.02%, 83.90 and 0.5%, respectively. Araucaria cunninghamii had relatively low antioxidant activity. In the phenolic fraction, antioxidant activity increased after partitioning of the n-hexane solubles. The phenolic fraction exhibited an increase in its inhibitory effect, with an increase from 19.5% to 28.8%. Further studies are necessary to detect phenolic and non-phenolic components affected by the intensity of antioxidant activity.
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.

Page 17 of 17 | Total Record : 162

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