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All Journal Jurnal Ilmu Pertanian Indonesia Jurnal Ilmu dan Teknologi Hasil Hutan Sains Natural: Journal of Biology and Chemistry Jurnal Pengelolaan Laboratorium Pendidikan Jurnal Ilmu dan Teknologi Kayu Tropis Journal of Sylva Indonesiana ULIN: Jurnal Hutan Tropis International Journal of Recent Technology and Applied Science (IJORTAS) Journal of Engineering, Technology, and Applied Science (JETAS) Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society Indonesian Journal of Laboratory Jurnal Pusat Inovasi Masyarakat Jurnal Sylva Lestari Jurnal Ilmu Kehutanan Jurnal Ilmu Kehutanan
Istie Rahayu
Department Of Forest Products, Faculty Of Forestry, Bogor Agricultural University (IPB), Bogor (16680)
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences

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Extractives Content and Shrinkage of Nangka (Arthocarpus heteroohyllus) and Mangium (Acacia mangium) Woods Deded S Nawawi; Satriyo H Wicaksono; Istie S Rahayu
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 1 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (107.477 KB) | DOI: 10.51850/jitkt.v11i1.103

Abstract

Extractives may contribute to dimensional stability of wood, physically and chemically, due to its heterogeneous of compounds. The objective of this research was to determine the extractives content of nangka (Arthocarpus heterophyllus) and mangium (Acacia mangium) woods and its influence on wood shrinkage. Extraction of wood was carried out by sokhlet method of ethanol and ethanol:benzene (1:2) for 12 h, and hot water for 3 h, respectively. The tangential, radial, and longitudinal shrinkage both of extracted and fresh wood samples were compared. The removal of ethanol, ethanol:benzene (1:2), and hot water soluble extractives increased tangential and radial shrinkage of wood, indicating that wood extractives was a significant factor influencing dimensional stability of wood. Extractive may influenced wood shrinkage physically as a bulking agent, and chemically by its contribution to hygroscopic properties of wood. However, longitudinal shrinkage of wood was not affected by extractives content which was, probably, due to very small of wood shrinkage in longitudinal direction. In addition, the basic density of wood was not affected by extractives content.Key words: Acacia mangium, Arthocarpus heterophyllus, bulking agent, extractives, wood shrinkage
The Color Change of Jabon Wood Stained by Bark Extract of Samak Wood (Syzygium inophyllum) Muflihati Muflihati; Deded S Nawawi; Istie S Rahayu; Wasrin Syafii
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.699 KB) | DOI: 10.51850/jitkt.v12i1.78

Abstract

The water soluble extract of samak (Syzygium inophyllum) bark was applied as natural dye for jabon wood (Anthocephalus cadamba). Ten percent of the extract concentration was used for staining of jabon wood by soaking methods for 74 h at room temperature, and for 3 h at 70 oC, respectively. The stained jabon wood performances were evaluated as the color change and stability by hot water leaching test. The stained and leached woods were assessed by determination of color changes using CIELab method and FTIR analysis. Based on the CIELab analysis, the brightness (L* value) of stained jabon wood decreased, and tend to more reddish (a* value increased) and yellowish (b* value slightly increased) compared to these of unstained wood, as the results, the color of jabon wood changed from light grey to reddish orange after staining with samak bark extract. The leaching test of stained wood to hot water changed the color from reddish orange to dull orange. FTIR analysis indicated that part of the extract stained jabon wood was quite stable to hot water treatment.Key words : bark extract, jabon wood, natural dye, samak wood, Syzygium inophyllum
Pemberdayaan Ibu-Ibu untuk Mengoptimalisasikan Lahan Pekarangan Rumah Desa Banjaran Pipin Supinah; Alifah Syahfitri; Istie Sekartining Rahayu
Jurnal Pusat Inovasi Masyarakat (PIM) Vol. 2 No. 4 (2020): Juni 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (413.072 KB)

Abstract

The yard optimization program can have two benefits at the same time, namely increasing the economic value and the value of food security. The purpose of this activity is to socialize to the community the importance of optimizing the plot of land to increase economic value and food security on a family scale. The method used in this activity is a lecture followed by a question and answer session, in the last session there was a distribution of vegetable seeds such as tapai that can be planted in the family yard. The results of this day's activity the community, especially housewives, understood the importance of optimizing the family yard by growing it with various kinds of family needs such as vegetables and family medicinal plants. . Keywords: Banjaran village, land yard, empowerment
Pengenalan Konservasi Melalui Program Forester Education di Desa Jerukwangi, Kecamatan Bangsri, Kabupaten Jepara Alifah Fidela; Muslimatul Rahmi; Istie Sekartining Rahayu
Jurnal Pusat Inovasi Masyarakat (PIM) Vol. 2 No. 4 (2020): Juni 2020
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (401.142 KB)

Abstract

Conservation education is a program that is packaged with the aim of providing knowledge to the younger generation to be more aware and more concerned about the environment and problems and their interrelationships. The purpose of this program is to introduce conservation through the Forester Education program in Jerukwangi Village. This activity was applied in two methods of implementation, namely formal and informal. The method of implementation was formally implemented in State Elementary School 2 by providing material exposure, while the method of implementation was informally carried out at the community service post in Jerukwangi Village with the target of young children using the approach of playing while drawing. Both formal and informal provision of material has given children knowledge about the importance of ecosystem balance that needs to be maintained. The results of this activity are the embedded spirit of protecting the environment from an early age, starting with good habits such as throwing trash in its place, protecting and caring for plants, learning to make chains and food webs, as well as various activities that hone soft skills and character education. Keywords: Conservation, ecosystem, forester education
Fast-Growing Wood-Polymer Nano Composite Characteristics through Nano-SiO2 Impregnation Istie Rahayu; Abdul Salam Min Rohmatillah; Esti Prihatini; Wayan Darmawan; Gilang Dwi Laksono; Vera Junita Sitanggang
Wood Research Journal Vol 13, No 2 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.2.69-78

Abstract

Ganitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) and jabon (Anthocephalus cadamba) are fast-growing wood species that have low strength and durability class. One of methods for improving the characteristics of ganitri and jabon woods is impregnation. This study objectives were to analyze the effect of impregnation of Melamine Formaldehyde Furfuryl Alcohol (MFFA) copolymer and 0.5% Nano-SiO2 on the physical, mechanical and durability properties of ganitri and jabon woods. The impregnation process was carried out by applying a 0.5 bar vacuum for 1 hour and followed by 2 bar pressure for 2 hours. The results showed that impregnation with MFFA and Nano-SiO2 could improve optimally the physical and mechanical properties and durability of fast-growing woods
Fast-Growing Wood-Polymer Nano Composite Characteristics through Nano-SiO2 Impregnation Istie Rahayu; Abdul Salam Min Rohmatillah; Esti Prihatini; Wayan Darmawan; Gilang Dwi Laksono; Vera Junita Sitanggang
Wood Research Journal Vol 13, No 2 (2022): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2022.13.2.69-78

Abstract

Ganitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) and jabon (Anthocephalus cadamba) are fast-growing wood species that have low strength and durability class. One of methods for improving the characteristics of ganitri and jabon woods is impregnation. This study objectives were to analyze the effect of impregnation of Melamine Formaldehyde Furfuryl Alcohol (MFFA) copolymer and 0.5% Nano-SiO2 on the physical, mechanical and durability properties of ganitri and jabon woods. The impregnation process was carried out by applying a 0.5 bar vacuum for 1 hour and followed by 2 bar pressure for 2 hours. The results showed that impregnation with MFFA and Nano-SiO2 could improve optimally the physical and mechanical properties and durability of fast-growing woods
Distribusi Sel Pori pada Kayu Tarik dan Korelasinya dengan Komposisi Lignin Deded Sarip Nawawi; Istie Sekartining Rahayu; Nyoman Jaya Wistara; Rita Kartika Sari; Wasrin Syafii
Jurnal Ilmu Kehutanan Vol 13, No 1 (2019)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (349.755 KB) | DOI: 10.22146/jik.46207

Abstract

Sifat anatomi kayu tarik dianalisis untuk parameter jumlah dan diameter pori dan korelasinya dengan komposisi lignin. Sampel kayu reaksi diambil dari batang pohon mindi (Melia azedarach) yang tumbuh miring. Pembentukan kayu tarik menurunkan jumlah dan diameter pori dan sebagai implikasinya meningkatkan proporsi serat. Jumlah dan diameter pori berkorelasi positif dengan kadar lignin. Nisbah siringil/guaiasil dan erythro/threo struktur β-O-4 berkorelasi negatif dengan jumlah dan diameter pori. Hasil penelitian ini mengkonfirmasi bahwa perubahan proporsi sel penyusun kayu akibat tegangan pertumbuhan merupakan salah satu faktor penting yang berpengaruh terhadap perubahan karakteristik kimia lignin kayu tarik. Distribution of Vessels in Tension Wood and Its Correlation with Lignin CompositionAbstractThe anatomical properties of tension wood were investigated for number and diameter of vessel and its correlation with lignin composition. Reaction wood sample was taken from the leaning stem of mindi (Melia azedarach). The formation of tension wood reduced the number and size of vessel and, consequently, increased the proportion of fiber. Number and diameter of vessels positively correlated with lignin content. However, syringyl/guaiacyl ratio of lignin and erythro/threo ratio of β-O-4 structures were negatively correlated with number and diameter of vessels. It was confirmed that changes in the proportion of wood cell was an importance factor influencing the changes in chemical characteristic of tension wood lignin.
Sifat Dasar Kayu Ganitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) dari Sukabumi dan Potensi Penggunaannya Esti Prihatini; Akhrudin Maddu; Istie Sekartinging Rahayu; Mersi Kurniati
Jurnal Ilmu Kehutanan Vol 14, No 1 (2020)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1557.925 KB) | DOI: 10.22146/jik.57480

Abstract

Ganitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) adalah pohon cepat tumbuh yang banyak ditemukan di Sukabumi. Kayu ini tumbuh di hampir semua wilayah Indonesia. Tulisan ini menyajikan hasil pengujian sifat dasar (struktur anatomi, kimia, sifat fisis dan mekanis) kayu ganitri yang diambil dari hutan rakyat di daerah Sukabumi. Tujuan penelitian adalah untuk mengetahui potensi penggunan kayu ganitri berdasarkan sifat dasar dan penggunaan kayu oleh masyarakat sekitar. Hasil penelitian menunjukkan bahwa kayu ganitri memiliki kayu teras berwarna kuning dan kayu gubal berwarna putih. Corak kayu polos dan tekstur halus. Arah serat lurus sampai berpadu, kayu lunak, tidak mengkilap, dan tidak berbau. Berdasarkan nilai dimensi serat dan nilai turunannya, kayu ganitri termasuk ke dalam Kelas Mutu II. Kayu ganitri memiliki kadar holoselulosa dan selulosa yang tinggi (70,70% dan 54,58%), kadar sedang untuk lignin 21,60%, ekstraktif alkohol-benzena 3,47%, dan kadar abu 0,81%. Dengan berat jenis (BJ) kering udara 0,35 kayu ganitri termasuk ke dalam Kelas Kuat IV. Kayu tersebut disarankan untuk digunakan sebagai bahan bangunan konstruksi ringan, perkakas, furnitur, kayu lapis, papan sambung dan produk panel. Basic Properties of Ganitri Wood (Elaeocarpus sphaericus (Gaertn.) K. Schum from Sukabumi and Its Potential UsesAbsractGanitri (Elaeocarpus sphaericus (Gaertn.) K. Schum.) is a fastgrowing tree that is widely found in Sukabumi, West Java. It grows in all part of Indonesia. A research was carried out to investigate basic properties (anatomical, physical, mechanical, and chemical) of ganitri wood from the community forest of Sukabumi. The purpose of this study was to determine the potential use of ganitri wood based on its basic properties and local utilization. The results showed that the color of ganitri sapwood was white , and it was not clearly demarcated from the yellow, with fewer figure patterns. The texture was fine with straight to interlocked grain. The wood was soft, not lustrous, and no special odor. Based on the fibre dimensions and derivative values, the quality of ganitri wood fell in Class II as a raw material for pulp and paper. Ganitri had high holocellulose and cellulose levels (70.70% and 54.58%), moderate level in lignin (21.60%), and it contained 3.47% extractive soluble in alcohol-benzene, and 0.81% ash. Based on its air dry specific gravity (0,35), ganitri wood could be classified into wood Strength Class IV. The potential uses of ganitri are for lightweight construction material, tools, furniture, plywood, connecting boards, and other panel products.
Modification of Fast-Growing Wood into Magnetic Wood with Impregnation Method Using Fe3O4 Nanoparticles Esti Prihatini; Irma Wahyuningtyas; Istie Sekartining Rahayu; Rohmat Ismail
Jurnal Sylva Lestari Vol. 11 No. 2 (2023): May
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v11i2.651

Abstract

Fast-growing wood is rarely used by the community because of its low quality. This study aimed to modify the sengon (Falcataria moluccana) and jabon (Anthocephalus cadamba) into magnetic wood so they have new functions. In this study, the modification process was performed by impregnating five-level concentrations of Fe3O4 nanoparticles dissolved in two different dispersants, namely water and a mixture of furfuryl alcohol and water. The impregnation process is initiated by a vacuum of -0.5 bar, followed by a pressure of 1 bar for 120 min. The addition of furfuryl alcohol to the impregnation solution significantly increased the physical properties of magnetic wood. The presence of Fe3O4 in wood is also proven by the Fe-O groups observed from the FTIR spectrum analysis. The magnetic field strength also increased as the concentration level of Fe3O4 increased. Based on the results of this research, the best treatment was obtained on magnetic wood of sengon and jabon with furfuryl alcohol and Fe3O4 nanoparticles concentration of 7.5%. Keywords: Fast-growing wood, impregnation, magnetic wood, nanoparticles, nano Fe3O4
Uji Performa Alat Vakum Tekan Termodifikasi Untuk Impregnasi Kayu Esti Prihatini; Rohmat Ismail; Istie Sekartining Rahayu; Rizky Ramdhani
Jurnal Pengelolaan Laboratorium Pendidikan Vol.5, No.2, Juli 2023
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jplp.5.2.75-82

Abstract

The impregnation process is carried out to increase the resistance of wood from the attack of microorganisms such as fungi and termite attacks by placing the wood in a vacuum tube and then placing an impregnan solution into it. The limited ability of impregnation tubes is an obstacle in carrying out research and practicum activities, therefore there needs to be modifications to the impregnation tube so that the impregnation process can provide better results. Verification of the results of impregnation is done by calculating the value of weight percent gain (WPG) and relative standard deviation (%RSD) for the test of the level of appreciation. Based on the results of the experiment the highest %WPG value in the water impregnan solution was obtained from the parameter conditions of the type 3 press vacuum tool, which is with a time of 1 hour and a pressure of 5 bars and is worth (178.29±10.97). The highest %WPG value in boron solution of 5% is obtained from the condition of the type 6 press vacuum tool with a time of 3 hours and a pressure of 5 bars and is worth (5.16±0.45). The smallest %RSD value of water impregnan solution is achieved under the parameter conditions of type 4 tools at 3 hours and pressure 1 bar and is worth 3.99%. The smallest %RSD value of boron impregnan solution is 5% achieved under the parameter conditions of type 2 tools, namely within 1 hour and pressure of 3 bars and is worth 5.36%.
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Salam Min Rohmatillah Akhrudin Maddu Alifah Fidela Alifah Syahfitri Aqila Alya Nabila Sabarna Arinana Arinana Deded Sarip Nawawi Dodi Nandika Dwi Laksono, Gilang Efrida Basri Esti Prihatin Esti Prihatini Esti Prihatini Esti Prihatini Esti Prihatini Gérardin, Philippe Gilang Dwi Laksono Gilang Dwi Laksono I Ketut Nuridja Pandit I Nyoman Jaya Wistara I Wayan Darmawan Ina RITA Irma Wahyuningtyas Irma Wahyuningtyas Irsan Alipraja Ismail, Rohmat Khairunissa, Dhiya Khoerudin, Riki Laksono, Gilang Dwi Lina Karlinasari Martha, Resa Mersi Kurniati Muflihati Muflihati Muslimatul Rahmi Naresworo Nugroho Pipin Supinah Prihatini, Esti Remy Marchal Riadhi, Mohamad Rizki Rita Kartika Sari Rizky Ramdhani Rohmat Ismail Rohmat Ismail Rynaldo Davinsy, Rynaldo Saputri, Egy Dia Saputri, Egydia Satriyo H Wicaksono Saviska Luqyana Fadia Sofiaturizkiyah, Nurul Tobing, Gabriel Trisna PRIADI Vera Junita Sitanggang Wahyuningtyas, Irma Wasrin Syafii Wayan Darmawan Widyana LUZA Yoki Putra YOLANDA Zahrial COTO