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Jurnal Ilmu dan Teknologi Kayu Tropis

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Published by Masyarakat Peneliti Kayu Indonesia

ISSN : - EISSN : 16933834 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Jurnal ini mempublikasikan artikel asli baik penelitian dasar maupun terapan di bidang ilmu pengetahuan dan teknologi kayu, bahan berlignoselulosa bukan kayu, hasil hutan lainnya dan industri hasil hutan.

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Articles 316 Documents

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Trace Elements Content of Mangium Pulp throughout ECF Bleaching Stages as Measured by ICP Nyoman Wistara; Devi Nurmala
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 13, No 1 (2015): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The fate of metals in pulp of the five years old mangium wood (Acacia mangium Wild) during bleaching process was investigated. The wood was divided into tree division, i.e. bottom, middle and upper divisions. The wood was chipped and kraft pulped to achieve a kappa number of 14 + 0.5. The resulting pulps were then bleached following an elementally chlorine free (ECF) method of D0, EO, D1, D2 and P sequences. The measurement of metals content was carried out with Inductively Coupled Plasma (ICP) type Optical Emission Spectrometry (OES) Optima 4300DV. Brightness and viscosity of bleached pulps were measured in accordance with TAPPI T 525 om - 92 and TAPPI T 230 om-89 standard procedures, respectively. It was found that, metals content of five years old Acacia mangium tended to increase from the bottom to the upper divisions of the stem. Beyond the EO stage, the content of Mn reduced to below detrimental limit required in peroxide bleaching, which is of 1 ppm. However, the content of Cu and Fe of pulp from every stage of bleaching sequences were much higher than their detrimental limit, i.e. 0.5 ppm and 2 ppm, respectively. Metals content were also found to reduce brightness gain in ECF bleaching.Keywords: Acacia mangium, brightness, ECF bleaching, metals, viscosity

Biodegradasi Substrat Gergajian Kayu Sengon oleh Jamur Kelompok Pleurotus Asal Bogor Biodegradation of Sengon-wood Sawdust Substrate by Pleurotus Group Fungi from Bogor Elis Nina Herliyana; Dodi Nandika; Achmad Lisdar; I. Sudirman; Arief B. Witarto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 6, No 2 (2008): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

White-rot fungi has been started to be developed for enhancing the mushroom based industry in many countries including in environmentally sound of bio-bleaching and bio-pulping technological process. Six isolates of wild Pleurotus group were isolated from various location in Bogor, namely Pleurotus EAB7, EB24, EB14-2, EB6, EA4 and EB9 of which were studied of their ligninolytic character. P. ostreatus HO was used as standard comparison.The ligninolytic character of these six fungi isolates was measured after inoculation into Sengon (Paraserianthes falcataria) wood sawdust substrate inside plastic bag with substrate weight of about 400 gram; other additional substances were paddy scalp, gypsum, calcium and water. Observation was done on Sengon wood sawdust substrate since vegetative phase until reproductive phase. Samples were opened, destructed with Hammer Mill, and then dried with oven on temperature of 40oC in 4 ~ 6 days until water content reach 15%, and weigh about 30 gram for analyses. Analyses were done by measuring water soluble extractive substance (TAPPI T 207 om-88 Standard), NaOH (sodium hydroxide) 1% soluble extractive substance (TAPPI T 212 om-88 Standard), alkohol-benzena soluble extractive substance (TAPPI T 204 om-88 Standard), lignin content (TAPPI T 13 os-54 Standard), holocellulose content with method browning (TAPPI T 211 m Standard), and cellulose content with method Cross and Bevan (Meulenhoff et al. 1977; TAPPI 1996).Having applied of each wild Pleurotus group isolates resulted in increasing of extractives total compounds both in vegetative and reproductive phases. Each wild Pleurotus group isolates shows variation in decreasing average of lignin content (10.7 ~ 89.7%) and cellulose (18.9 ~ 87.4%). Pleurotus EB9 are able to decrease the highest lignin (89.7%) and cellulose (87.4%) content of substrate. Classification based on ligninolytic character is different with classification based on morphological and physiological characters. Pleurotus EB9 seems to be separated from other isolates. This shows that there was different ligninolytic character among the isolates. The best isolate for bio-pulping and bio-bleaching agent is Pleurotus EB9 on vegetative phase.

Morphology of Microfibrillated Cellulose from Primary Sludge Iwan Risnasari; Fauzi Febrianto; Nyoman J Wistara; Sucahyo Sadiyo; Siti Nikmatin
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 2 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Sewage sludge is the largest waste produced from the pulp and paper mill, consist of fibers (50-60%) and inorganic materials.The aim of this study was to obtain the microfibrillated cellulose of sludge through extraction and cellulose disintegration. The cellulose disintegration conducted by a combinations of the refining and ultrasonication treatment. The results showed that after extraction process the mass of C and O were increased. Conversely the mass of Al, Ca, Si and S were decreased. The mass of C and O was further increased after refining and ultrasonication treatment. The process of extraction on sludge could remove lignin, hemicellulose and inorganic materials to obtain more pure cellulose. Cellulose disintegration by a combination of the refining 30 times followed by ultrasonication for 120 min produced microfibrillated cellulose with diameter of 284 nm.Key words: extraction, microfibrillated cellulose, morphology, sludge

Moisture Profile of Two Veneer Thickness Following Microwave Heat Gun Drying Wahyudi Wahyudi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 4, No 1 (2006): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Application of microwave technology on the wood industries, mainly wood drying begun shortly after World War II. Full application of microwave technology at production line of wood drying industries is still being adopted in limited scales. This is due to insufficient knowledge or lack of understanding of how microwave dries wood, it consumes huge of electricity, and needs an intensive capital investment. However, several researchers have begun to conclude that employing microwave technology on wood drying will provide faster drying time, higher in rate of drying and uniformity in moisture content profiles of dried wood and no air pollution. This research is designed to investigate the application of microwave technology for drying of wood veneer in comparison to conventional drying. Drying attributes consist of moisture profiles of dried veneer, drying time, rate of drying and microwave energy consumption, using two veneer thickness of Radiata pine. The results indicated that microwave technology provides faster drying and results in higher moisture profiles of dies veneer and rate of drying compared to conventional drying

PROSPEK DAN POTENSI PEMANFAATAN KAYU KARET SEBAGAI SUBSTITUSI KAYU ALAM Boerhendhy, Island; Nancy, Cicilia; Gunawan, Anang
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 1, No 1 (2003): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

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Wood from natural forest for processing industry is decreasing in term of quality and volume. Due to technology development on processing and preservation for rubber wood, the range of rubber wood utilization is widen, so the demand of its increases. The potency of rubber wood as raw material for wood industry is high. In 1997, the area of rubber plantation was about 3.4 million hectares. If 3 percent of big estate and 2 percent of smallholder areas would be replanted every year, it could provide 2.7 million m3 of rubber wood per year. Rubber wood management in the field faced constraints, such as road access for smallholder field, low rendement, supply of rubber wood is only available at certain season, and a distance between processing location and rubber areas is far, and therefore the economic value of rubber wood becomes lower. Availability of good road access, utilization of clonal planting material, proper tapping practice, replanted area is located in one large area, and positive support by government are the steps to be taken by various agencies in order to optimize the utilization and economic value of rubber wood.

Microwave Treatment on Two Fast Growing Trees Species for Bioethanol Production Lucky Risanto; Euis Hermiati; Danang S Adi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 1 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objectives of this research were to analyze chemical component and to evaluate the effect of micro wave treatment on the bioethanol production of “balik angin daun kecil” and “balik angin daun sedang” woods. Woods were milled to the size of 40-60 mesh and followed by measuring their chemical component. Glycerol and 0.5% sulphuric acid were added to the woods with the ratio of 10:1 and 20:1, respectively and then irradiated to the micro waves for 2.5-10 min. with power 50 and 70%. The pulp was hydrolyzed with cellulose for 48 H and reducing sugar yield was obtained. The results indicated that hollocellulose and alpha cellulose of “balik angin daun kecil” wood was higher than that of “balik angin daun sedang” wood. Conversely, lignin content of “balik angin daun kecil” wood was lower than that of “balik angin daun sedang” wood. The highest reducing sugar yield of balik angin daun kecil and balik angin daun sedang woods were 21.00% and 22.40%, respectively and they were obtained on irradiated to microwaves for 5 min at 70% power.Key words: balik angin, bioethanol, chemical component, enzymatic hydrolysis, microwave

Aktivitas Antioksidan dan Toksisitas Akut Zat Ekstraktif dari Residu Penyulingan Surian (Toona sinensis Roemor) Rita K Sari; Desi Melianti; Wasrin Syafii; Dewi R Agungpriyono
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 2 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objective of this research was to determine the yield, antioxidant activity, acute toxicity, and phytochemical compound of extractives from left over distilling liquid and distillation residues of various part of surian (Toona sinensis). The extracts from the left over distilling liquid of leaves, heartwood, and sapwood were assigned as LL, HL, and SL, respectively, whereas LB, HB, and SB were respectively the extracts from leaves, heartwood, and sapwood of boiled solid residue. The yield of LL, LB, SL, HL, SB, and HB were 28.78, 10.18, 2.11, 1.74, 0.92, and 0.81% respectively. Based on antioxidant activity test, the LB, LL, and HL extracts were classified as very active with EC50 of 5.45, 5.70, and 5.91 mg ml-1 respectively. The SL was classified as active (EC50 32.36 mg ml-1), the SB and HB extracts were classified as inactive (EC50 > 100 mg ml-1). Based on acute toxicity test, LB is the best natural antioxidant because it was non toxic material (LD50 47752 mg kg-1 BW), while the LL and HL extracts were clasified as low toxicity with LD50 4518.56 and 1999.86 mg kg-1 BW (body weight). The LB extract contained phenol hydroquinone, flavonoids, and tannins (total phenolic content: 94 mg g-1 GAE).

Pengawetan Kayu Ganitri dan Mahoni melalui Rendaman Dingin dengan Bahan Pengawet Boric Acid Equivalent Endah Suhaendah; Mohamad Siarudin
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 13, No 2 (2015): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Dalam rangka meningkatkan masa pakai kayu jenis ini, penelitian mengenai pengawetan kayu dengan larutan Boric Acid Equivalent (BAE) 10 % melalui perendaman dingin telah dilakukan. Sampel kayu ganitri (Elaeocarpus ganitrus) dan mahoni (Swietenia mahogany) berasal dari hutan rakyat di Desa Sukamulih, Kecamatan Sariwangi, Kabupaten Tasikmalaya. Perlakuan yang diterapkan adalah tebal kayu (2,5 cm, 5 cm, 7,5 cm dan 10 cm) dan lama perendaman (3 hari, 5 hari dan 7 hari). Parameter yang diamati adalah retensi dan penetrasi bahan pengawet. Hasil penelitian menunjukkan bahwa Perlakuan tebal kayu dan lama perendaman berpengaruh nyata terhadap retensi dan penetrasi bahan pengawet BAE pada kayu ganitri maupun mahoni. Tingkat retensi dan penetrasi bahan pengawet BAE pada kayu ganitri memenuhi persyaratan Standar Nasional Indonesia (SNI) pada semua perlakuan. Sedangkan pada jenis mahoni, tingkat penetrasi bahan pengawet BAE memenuhi standar SNI untuk semua perlakuan, namun tingkat retensi hanya memenuhi standar SNI pada ketebalan kayu 2,5 cm dan 5 cm pada semua perlakuan lama perendaman. Pada ketebalan kayu mahoni yang lebih tinggi, lama perendaman sampai 7 hari belum dapat mecapai retensi yang memenuhi standar SNI. Berdasarkan hasil analisis, pengawetan dengan menggunakan BAE 10 % yang direkomendasikan adalah lama perendaman 3 hari pada semua ketebalan kayu ganitri, dan ketebalan kayu 2,5 dan 5 cm pada kayu mahoni.

Pengaruh Lama Perlakuan Uap pada Serat terhadap Sifat Fisis dan Mekanis Papan Semen Serat Sisal Effect of Fiber Steaming Treatment on the Physical and Mechanical Properties of Sisal Fiber Cement Bonded Board Ismail Budiman; Mohamad Gopar; Subyakto Subyakto; Bambang Subiyanto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 7, No 1 (2009): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The main problem of making Sisal fiber cement bonded board is how to mix fibers and cement to get excellent performance of board due to the presence of extractives. Steam treatment on fibers is expected to reduce extractives in the fibers; therefore it will improve the bonding between fibers and cement. Beside that, utilization of catalysts, such as calcium chloride (CaCl2) and magnesium chloride (MgCl2), is expected to increase the physical and mechanical properties of Sisal fiber cement bonded board. Fibers of Sisal was chopped into 0.5 ~ 1.0 cm of length. Steam treatment was conducted in autoclave for 30, 60 and 120 minutes at 1.15 atm of pressure and 121ºC of temperature, and untreated Sisal as control. Chopped fiber was dried in an oven at 60ºC to obtain 5% of moisture content. The content of CaCl2 or MgCl2 was 5% of cement weight.The board was produced at a dried fiber : cement ratio of 1 : 3 and water : cement ratio of 1 : 2 based on board weight. The target density of the boards produced was 1.25 g/cm3. Cement bonded Sisal fiber was formed into 25cm x 25cm x 1cm mat, and then cold pressed for 24 hours. Composites were conditioned at room temperature for 28 days. Physical and mechanical characteristics were tested by Universal Testing Machine (UTM). Results shown that combination of steam treatment and catalyst added improved the physical and mechanical properties such as thickness swelling (TS), modulus of elasticity (MOE), modulus of rupture (MOR), screw withdrawal (SW) and internal bond (IB).

Antiproliferative Activities of Anthocephalus cadamba Extracts on Human Breast Cancer and Cervical Adenocarcinoma Cell Lines Rita K Sari; Devi Armilasari; Deded S Nawawi; Wayan Darmawan; Silmi Mariya
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The aim of this research was to evaluate the anticancer properties of methanolic extracts from inner bark and wood of jabon (Anthocephalus cadamba). The extracts were investigated in vitro bioassay for its possible antiproliferative activities on human MCF7 breast cancer cell line and HeLa cervical adenocarcinoma cell lines. The cell viability were assessed using microculture tetrazolium technique (MTT) colorimetric assay. The results showed that inner bark extract exhibited higher antiproliferative activity on MCF7 cancer cell line (IC50 91 μg ml-1) than wood extract (IC50 312 μg ml-1). But, antiproliferative activity of inner bark extract on HeLa cell lines was higher (IC50 5 μg ml-1). The inner bark extract is potential to be developed as anti cancer agent in cervical adenocarcinoma cancer therapy because moresecure against Vero normal cells (IC50 288 μg ml-1). Whereas compounds such as phenolic and fatty acid contribute to high antiproliferative activities of inner bark extract. The qualitative analysis detect the extracts containing flavonoids, triterpenoids, saphonin which are thought to contribute to the high antiproliferative activities of this extract.Keywords : Anthocephalus cadamba, antiproliferative activity, human MCF7 breast cancer cell line, HeLa cervical adenocarcinoma cell lines, Vero normal cell lines

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