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All Journal Jurnal Penelitian Ekosistem Dipterokarpa Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Ilmu dan Teknologi Kayu Tropis Wood Research Journal : Journal of Indonesian Wood Research Society Jurnal Risalah Kebijakan Pertanian dan Lingkungan Wood Research Journal : Journal of Indonesian Wood Research Society Jurnal Penelitian Ekosistem Dipterokarpa Jurnal Ilmu Kehutanan Jurnal Ilmu Kehutanan
Sigit Sunarta, Sigit
Departemen Teknologi Hasil Hutan, Fakultas Kehutanan, Universitas Gadjah Mada
Agriculture, Biological Sciences & Forestry Humanities Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Social Sciences

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Evaluasi terhadap Stimulan Ethephon dalam Penyadapan Pinus merkusii (Evaluation on Ethephon Stimulant to Pinus merkusii Tapping) Lukmandaru, Ganis; Sunarta, Sigit; Listyanto, Tomy; Kasmudjo, Kasmudjo; Pujiarti, Rini; Widyorini, Ragil
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 16, No 2 (2018): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (38.454 KB)

Abstract

The aim of this study was to find out the effect of Ethephon, an ethylene releasing compound, in a combination with sulfuric acid resin production Pinus merkusii. The tested stimulants were ETRAT; SR4; 20% sulfuric acid; 20% sulfuric acid - Ethephon 2%; 3.3% sulfuric acid – 4.1% Ethephon; and sulfuric acid – 8.3% Ethephon. Trees without stimulant spraying were the controls. The results showed that for daily production, the first-day observation gave the highest value but decreased drastically after second-day observation in a varied degree depent on the stimulants. On the basis of accumulated production, the addition of Ethephon in a high or low level of sulfuric acid concentration exhibited significantly higher resin production compared to that of ETRAT; SR4; and 20% sulfuric acid stimulants as well as control trees. It increased resin production by 98.0-150.6% compared to control trees in class age of VII and increased by 140.9-227.1% in class age of IV stands. Moderate significant correlations (r=0.65) were observed between the values of resin production and tree diameter (controls) as well as between the values of resin production and tree diameter of trees treated by sulfuric acid stimulants (r=0.65-0.82).Keywords : class age, ethylene, quarre, resin production, tree diameter
KARAKTERISTIK KIMIA DAN POTENSI DAUN TANAMAN AKAR BULOU (MIKANIA MICRANTHA KUNTH) SEBAGAI OBAT LUKA TRADISIONAL Andrian Fernandes; Rizki Maharani; Sigit Sunarta; Rayan Rayan
Jurnal Penelitian Ekosistem Dipterokarpa Vol 4, No 2 (2018): Jurnal Penelitian Ekosistem Dipterokarpa
Publisher : Jurnal Penelitian Ekosistem Dipterokarpa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jped.2018.4.2.109-116

Abstract

Tanaman Bulou (Mikania micrantha Kunth) merupakan salah satu jenis gulma yang sangat mudah tumbuh dan menyebar. Masyarakat desa Nyapa Indah, Berau, Kalimantan Timur, mengenal tanaman ini dengan sebutan Akar Bulou dan telah menggunakan daunnya sebagai obat luka alami. Pengembangan Daun tanaman Akar Bulou sebagai obat luka tradisional perlu mendapat dukungan uji ilmiah. Oleh karena itu, dalam studi ini dilakukan uji ilmiah beberapa karakteristik kimia meliputi uji fitokimia, uji akti oksidan dan senyawa aktifnya agar memperkuat potensi pemanfaatannya sebagai obat luka alternatif. Hasil uji menunjukkan bahwa daun tanaman Akar Bulou mengandung alkaloid, triterpenoid dan steroid. Pada ekstrak Akar Bulou larut etanol 95% memiliki bioaktifitas antioksidan tertinggi pada konsentrasi 25 ppm sebesar 83,31%. Sedangkan untuk senyawa aktifnya, terdapat senyawa alkaloid yang diduga terdapat dalam daun tanaman Akar Bulou adalah 2-(Dimethylamino)-1,3-dimethyltetrahydro-1,3,2-diazaphosphole 2-oxide. Sedangkan Bicyclo[7.2.0]undec-4-ene, 4,11,11-trimethyl-8-methylene tergolong dalam terpenoid yang merupakan senyawa metabolit sekunder untuk membantu dalam proses penyembuhan luka.
Pemanfaatan Limbah Biomassa Sawit Ramah Lingkungan Denny Irawati; Ganis Lukmandaru; Joko Sulistyo; Sigit Sunarta; Tomy Listyanto; Jaka Widada; Nunuk Supriyatno; Yose Rizal
Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 6, No 4 (2020): Desember
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1738.964 KB) | DOI: 10.22146/jpkm.44874

Abstract

Dalam rangka memenuhi kebutuhan lahan untuk pembangunan perumahan karyawan, PT Semen Baturaja Tbk. (PTSB) membuka kurang lebih 27 hektar lahan yang di dalamnya diperkirakan terdapat kurang lebih 2700 batang tanaman kelapa sawit yang kurang produktif. Pembukaan lahan tersebut akan menghasilkan biomassa sawit yang cukup besar. Salah satu usaha pemanfaatan limbah biomassa sawit adalah dengan mengolahnya menjadikompos. Kompos dapat digunakan untuk rehabilitasi lahan bekas tambang oleh PTSB. Hingga saat ini, PTSB belum memiliki pengalaman di bidang pembuatan kompos. Oleh karena itu, PTSB bekerja sama dengan Fakultas Kehutanan, Universitas Gadjah Mada untuk memproduksi pupuk kompos dari limbah biomassa tanaman sawit. Metode yang digunakan pada kegiatan pengabdian ini adalah sosialisasi, pembuatan kompos secara partisipatif, dan pendampingan di lapangan. Luaran dari kegiatan ini berupa kompos limbah biomassa sawit serta pengetahuan mengenai teknologi proses pembuatan kompos bagi pihak PTSB.Jumlah pupuk kompos yang bisa diperoleh dari delapan gundukan daun kelapa sawit adalah 248,9 ton dan dari batang kelapa sawit sebanyak 1.236,6 ton. Pupuk kompos setelah pengomposan selama dua bulan mempunyai rasio C/N 13,7. Biaya yang dikeluarkan untuk pengomposan adalah Rp591.405.000,00 dengan potensi keuntungan sebesar Rp6.093.232.500,00. Pengetahuan perihal pembuatan kompos berdampak pada penghematan pengeluaran PTSB untuk membeli pupuk guna rehabilitasi lahan serta penanganan permasalahan limbah biomassa.
KARAKTERISTIK KIMIA DAN POTENSI DAUN TANAMAN AKAR BULOU (MIKANIA MICRANTHA KUNTH) SEBAGAI OBAT LUKA TRADISIONAL Andrian Fernandes; Rizki Maharani; Sigit Sunarta; Rayan Rayan
Jurnal Penelitian Ekosistem Dipterokarpa Vol 4, No 2 (2018): Jurnal Penelitian Ekosistem Dipterokarpa
Publisher : Jurnal Penelitian Ekosistem Dipterokarpa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jped.2018.4.2.109-116

Abstract

Tanaman Bulou (Mikania micrantha Kunth) merupakan salah satu jenis gulma yang sangat mudah tumbuh dan menyebar. Masyarakat desa Nyapa Indah, Berau, Kalimantan Timur, mengenal tanaman ini dengan sebutan Akar Bulou dan telah menggunakan daunnya sebagai obat luka alami. Pengembangan Daun tanaman Akar Bulou sebagai obat luka tradisional perlu mendapat dukungan uji ilmiah. Oleh karena itu, dalam studi ini dilakukan uji ilmiah beberapa karakteristik kimia meliputi uji fitokimia, uji akti oksidan dan senyawa aktifnya agar memperkuat potensi pemanfaatannya sebagai obat luka alternatif. Hasil uji menunjukkan bahwa daun tanaman Akar Bulou mengandung alkaloid, triterpenoid dan steroid. Pada ekstrak Akar Bulou larut etanol 95% memiliki bioaktifitas antioksidan tertinggi pada konsentrasi 25 ppm sebesar 83,31%. Sedangkan untuk senyawa aktifnya, terdapat senyawa alkaloid yang diduga terdapat dalam daun tanaman Akar Bulou adalah 2-(Dimethylamino)-1,3-dimethyltetrahydro-1,3,2-diazaphosphole 2-oxide. Sedangkan Bicyclo[7.2.0]undec-4-ene, 4,11,11-trimethyl-8-methylene tergolong dalam terpenoid yang merupakan senyawa metabolit sekunder untuk membantu dalam proses penyembuhan luka.
Pengaruh Perbedaan Jenis Pelarut terhadap Kandungan Senyawa Kimia, Aktivitas Antioksidan, dan Kadar Sitotoksisitas dari Ekstrak Gum Acacia Decurrens Willd. Ramadhany Ayu Purnama; Sigit Sunarta; Hilda Ismail
Jurnal Ilmu Kehutanan Vol 16 No 2 (2022): September
Publisher : Faculty of Forestry Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1698.404 KB) | DOI: 10.22146/jik.v16i2.2254

Abstract

This study aimed to determine the chemical compounds in A. decurrens gum and its bioactivity potential. Extraction was carried out in multilevel with the reflux technique using n-hexane, ethanol, and water as solvents. The chemical compounds were identified using Gas Chromatography-Mass Spectrometry (GC-MS). The amount of A. decurrens gum extract yield, total phenolic content (TPC), total flavonoid content (TFC), and total flavonols content (TVC) were then analyzed quantitatively. Furthermore, bioactivity in the form of antioxidant activity was analyzed with the 2,2-diphenyl-1-picrylhydrazil (DPPH) method, while the cytotoxicity level was assessed using the brine shrimp lethality assay (BSLT). The GC-MS analysis showed that the n-hexane-soluble fraction contained alkane, alkene, aldehyde, ester, and aromatics, while the ethanol-soluble fraction contained monosaccharide and fat group compounds. The water-soluble fraction contained only the monosaccharide group. The highest content value was obtained from the ethanol-soluble fraction, namely TPC, TFC, TVC, and antioxidant activity of 19.61±0.47 mgGA/g, 23.89±1.32 mgQE/g, 13.41±0.81 mgCE/g, and IC50: 3.842 g/mL, respectively. The cytotoxicity content obtained from each fraction sequentially was 0.47 ppm, 5.91 ppm, and 6.56 ppm for n-hexane, ethanol, and water, respectively.
Kualitas, Komposisi Kimia, dan Aktivitas Anti Oksidan Minyak Kenanga (Cananga odorata) Rini Pujiarti; Titis Budi Widowati; Kasmudjo Kasmudjo; Sigit Sunarta
Jurnal Ilmu Kehutanan Vol 9, No 1 (2015)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (374.038 KB) | DOI: 10.22146/jik.10179

Abstract

Minyak kenanga pada penelitian ini diperoleh dari bunga kenanga segar dengan penyulingan cara pengukusan. Uji kualitas fisik minyak kenanga cukup memuaskan dan sesuai dengan standar SNI 06-3949-1005. Komposisi kimia minyak kenangan diuji menggunakan GC-MS. Hasil analisis GC-MS mengidentifikasikan adanya 23 komponen kimia penyusun minyak kenanga. Komponen utama penyusun minyak kenanga yang dihasilkan pada penelitian ini adalah caryophyllene (36,44%), â-linalool (5,97%), á-caryophyllene (9,61%), germacrene D (17,23%), dan benzyl benzoate (7,18%). Pengujian antioksidan minyak kenanga dengan metode DPPH scavenging assay menunjukkan aktivitas antioksidan yang lembut dari minyak kenangan (IC50: 2,29 mg/ml) jika dibandingkan dengan kontrol positif BHA (IC50: 0,03 mg/ml). Penelitian ini mengidentifikasikan bahwa minyak kenanga memiliki potensi sebagai antioksidan alami yang lembut.Kata kunci: Cananga odorata, minyak atsiri, kualitas, komposisi kimia, antioksidan.  Quality, chemical composition, and antioxidative activity of cananga (Cananga odorata) oilAbstractCananga oil in this study was obtained from fresh flowers of Cananga odorata by water-steam distillation. The result of physical properties of cananga oil were compared with the SNI 06-3949-1005 showed that cananga oil was satisfied the quality prescribed by standard. The chemical composition of cananga oil was analyzed by GC-MS. GC-MS analysis showed that 23 compounds have been identified. The main compounds of cananga oil were caryophyllene (36.44%), â-linalool (5.97%), á-caryophyllene (9.61%), germacrene D (17.23%) and benzyl benzoate (7.18%). The DPPH scavenging assay showed that cananga oil possess mild antioxidant activity (IC50: 2.29 mg/ml) if compared with positive control of BHA (IC50: 0.03 mg/ml). This study indicated that cananga oil has potency as mild natural antioxidant. 
Effect of Maleic Acid and Glycerol Concentrations on the Characteristics of Glycerol Ester of Maleic Rosin Ramadhani, Rafli Nur; Lukmandaru, Ganis; Sunarta, Sigit; Widiyatno, Widiyatno
Wood Research Journal Vol 15, No 1 (2024): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2024.15.1.22-27

Abstract

Gum rosin, distilled from the resin of pine trees (Pinus merkusii), is highly susceptible to degradation and oxidation. To maintain its quality, modification by fortification, among other methods, should be made, where a stable product named glycerol ester of maleic rosin (GEMR) is produced. In the experiment reported in this paper, rosin was prepared on the laboratory scale. Fortification was performed using maleic acid of varied concentrations (8%, 10%, and 12%, w/w), followed by mixing with glycerol through an esterification process (10%, 12%, and 14%, w/w). The average yield of GEMR produced was in the range from 67.11% to 79.30%. The average softening point, acid number, and ash content were in the ranges of 91.67–120.67°C, 5.84–9.82 mg KOH/g, and 5 x 10-3–14.7 x 10-3%, respectively. No significant effect of concentration was observed on yield and acid number. The GEMR product was completely soluble in toluene at all concentration levels. It was found that the increase of glycerol portion affected the properties of GEMR, i.e., lower ash content and acid number, while higher softening point. Based on the acid number, solubility in toluene, and softening point values, the GEMR obtained in this research fulfilled the requirements of Chinese GEMR standards.
Chemical Properties of “Jati Unggul Nusantara” Teak Wood from Gunungkidul Lukmandaru, Ganis; Pratama, Ardhan Wira; Sutapa, Johanes Pramana Gentur; Sunarta, Sigit; Irawati, Denny; Pujiarti, Rini; Arisandi, Rizki
Wood Research Journal Vol 15, No 1 (2024): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2024.15.1.8-14

Abstract

Jati Unggul Nusantara (JUN) trees show a fast-growing characteristic and a possibility to be harvested in short rotation. This study aims to determine the chemical properties of 8-year-old JUN tree parts. Three individual trees were felled from Paliyan, Gunungkidu, Yogyakarta, Indonesia. The tree parts were observed vertically (i.e., the bottom, center, top, branches, and twigs) and radially (i.e., sapwood and heartwood of the trunk). The result showed that the average content of cell wall components of extractive-free wood, i.e., hemicellulose, α-cellulose, and lignin, were 20.38~25.71%, 41.88~49.10%, and 26.46~29.85%, respectively. Furthermore, successive extractive measurements showed that ethanol-toluene and hot-water soluble extracts (based on dry wood) were at the levels of 3.01~7.58% and 1.85~3.09%, respectively. The ash content, silica content, and pH values were 0.48~0.82%, 0.13~0.37%, and 5.89~7.51%, respectively. By an analysis of variance, significant differences between the sapwood and the heartwood were observed in ethanol-toluene extractive, lignin, holocellulose, and cellulose contents. The differences among tree parts did not show any significant effect on the hot-water soluble content. Significant differences between the main stem and branches or between the main stem and twigs were observed in most chemical properties.
Effect of Maleic Acid and Glycerol Concentrations on the Characteristics of Glycerol Ester of Maleic Rosin Ramadhani, Rafli Nur; Lukmandaru, Ganis; Sunarta, Sigit; Widiyatno, Widiyatno
Wood Research Journal Vol 15, No 1 (2024): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2024.15.1.22-27

Abstract

Gum rosin, distilled from the resin of pine trees (Pinus merkusii), is highly susceptible to degradation and oxidation. To maintain its quality, modification by fortification, among other methods, should be made, where a stable product named glycerol ester of maleic rosin (GEMR) is produced. In the experiment reported in this paper, rosin was prepared on the laboratory scale. Fortification was performed using maleic acid of varied concentrations (8%, 10%, and 12%, w/w), followed by mixing with glycerol through an esterification process (10%, 12%, and 14%, w/w). The average yield of GEMR produced was in the range from 67.11% to 79.30%. The average softening point, acid number, and ash content were in the ranges of 91.67–120.67°C, 5.84–9.82 mg KOH/g, and 5 x 10-3–14.7 x 10-3%, respectively. No significant effect of concentration was observed on yield and acid number. The GEMR product was completely soluble in toluene at all concentration levels. It was found that the increase of glycerol portion affected the properties of GEMR, i.e., lower ash content and acid number, while higher softening point. Based on the acid number, solubility in toluene, and softening point values, the GEMR obtained in this research fulfilled the requirements of Chinese GEMR standards.
Chemical Properties of “Jati Unggul Nusantara” Teak Wood from Gunungkidul Lukmandaru, Ganis; Pratama, Ardhan Wira; Sutapa, Johanes Pramana Gentur; Sunarta, Sigit; Irawati, Denny; Pujiarti, Rini; Arisandi, Rizki
Wood Research Journal Vol 15, No 1 (2024): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2024.15.1.8-14

Abstract

Jati Unggul Nusantara (JUN) trees show a fast-growing characteristic and a possibility to be harvested in short rotation. This study aims to determine the chemical properties of 8-year-old JUN tree parts. Three individual trees were felled from Paliyan, Gunungkidu, Yogyakarta, Indonesia. The tree parts were observed vertically (i.e., the bottom, center, top, branches, and twigs) and radially (i.e., sapwood and heartwood of the trunk). The result showed that the average content of cell wall components of extractive-free wood, i.e., hemicellulose, α-cellulose, and lignin, were 20.38~25.71%, 41.88~49.10%, and 26.46~29.85%, respectively. Furthermore, successive extractive measurements showed that ethanol-toluene and hot-water soluble extracts (based on dry wood) were at the levels of 3.01~7.58% and 1.85~3.09%, respectively. The ash content, silica content, and pH values were 0.48~0.82%, 0.13~0.37%, and 5.89~7.51%, respectively. By an analysis of variance, significant differences between the sapwood and the heartwood were observed in ethanol-toluene extractive, lignin, holocellulose, and cellulose contents. The differences among tree parts did not show any significant effect on the hot-water soluble content. Significant differences between the main stem and branches or between the main stem and twigs were observed in most chemical properties.
Co-Authors Ananto Triyogo Andrian Fernandes Arfenda, Ferrieren Curassavica Arisandi, Rizki Denny Irawati Dodik Ridho Nurrochmat Eno Suwarno Ganis Lukmandaru Ganis Lukmandaru Hermudananto, Hermudananto Hilda Ismail JAKA WIDADA Johanes Pramana Gentur Sutapa, Johanes Pramana Gentur Joko Sulistyo Kasmudjo Kasmudjo Kasmudjo, Kasmudjo Muhammad Navis Rofii Nunuk Supriyatno Pratama, Ardhan Wira Ragil Widyorini Ramadhani, Rafli Nur Ramadhany Ayu Purnama Ratnaningrum, Yeni Widyana Nurchahyani Rayan Rayan Retno Nur Utami, Retno Nur Rini Pujiarti Rizki Maharani Titis Budi Widowati Tomy Listyanto Tomy Listyanto Widiyatno Yose Rizal