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All Journal Jurnal Ilmu Kehutanan Indonesian Journal of Forestry Research
Ganis Lukmandaru
Faculty of Forestry, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry

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Karakteristik Energi Limbah Tebangan Jati Klonal dari Paliyan-Gunungkidul Denny Irawati; Aditya Nur Cahyo; Yusi Dian; Joko Sulistyo; Sigit Sunarta; Rini Pujiarti; Ganis Lukmandaru; Johanes Pramana Gentur Sutapa
Jurnal Ilmu Kehutanan Vol 17 No 2 (2023): September
Publisher : Faculty of Forestry Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jik.v17i2.6852

Abstract

Breeding teak with a clonal system was a common practice to enhance productivity and reduce rotation. A private company in Paliyan Sub-District, Gunungkidul Regency, Indonesia, developed Jati Unggul Nusantara (JUN) through vegetative propagation, particularly cloning, using cuttings. JUN had gained widespread popularity as a replacement for conventional teak varieties for commercial purposes. The utilization of JUN commercial timber left various non-commercial biomass forms, such as leaves, branches, and twigs. This research aimed to assess JUN logging waste biomass's energy potential and characteristics across different tree-age stands. This research used non-commercial biomass from six- and eight-year-old trees, including branches, twigs, leaves, stumps, and unmerchantable top stems. The results showed that the average dry weight of JUN logging waste from six- and eight-year-old trees was 31.5 and 53.5 kg/tree, while the calorific value ranged from 4516.4–5177.7 cal/g. This waste had good characteristics as an energy material, specifically from the part of unmerchantable top stems with a high fuelwood value indexof 6579.6.
CHEMICAL CONSTITUENTS OF Melaleuca leucadendron Linn. LEAF ESSENTIAL OILS QUALITY UNDER DIFFERENT COLLECTING TIME IN KPH YOGYAKARTA, GUNUNGKIDUL, INDONESIA Rizki Arisandi; Rini Pujiarti; Ganis Lukmandaru; Budi Mulyana
Indonesian Journal of Forestry Research Vol. 10 No. 2 (2023): Indonesian Journal of Forestry Research
Publisher : APTKLHI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59465/ijfr.2023.10.2.195-205

Abstract

Melaleuca leucadendron Linn is one of Indonesia's most important non-timber forest products as a commercial essential oil. The aim of this study was to investigate the variation of compounds in M. leucadendron essential oils when leaves were collected at different times from August 2017 to April 2018 at the Yogyakarta Forest Management Unit (FMU). The essential oils were isolated by steam distillation and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 13 constituents were identified with major compounds, i.e., 1.8-cineole (57.8 to 76.0%), D (+)-limonene (4.40 to 12.1%), p-cymene (1.53 to 12.9%) and α-terpineol (4.98 to 9.98%). The results showed that the weather conditions in the higher rainfall and flowering were favorable for the production of essential oil (March) and increased the major compounds, especially from November to January (with the exception of α-terpineol, which was found to be higher in September). In contrast to these main compounds, α-pinene, β-pinene, and humulene are used as marker compounds to distinguish between the lowest and highest period. In addition, it is also noted that the flowering stage affects the monthly variation of the major compounds.
Co-Authors Aditya Nur Cahyo Budi Mulyana, Budi Denny Irawati Johanes Pramana Gentur Sutapa Joko Sulistyo Rini Pujiarti Rizki Arisandi Sigit Sunarta Yusi Dian