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All Journal Jurnal Teknologi Industri Pertanian Jurnal Sain Veteriner International Journal of Renewable Energy Development Tengkawang : Jurnal Ilmu Kehutanan BIOTROPIA - The Southeast Asian Journal of Tropical Biology Indonesian Journal of Forestry Research Jurnal Penelitian Hasil Hutan Jurnal Penelitian Hutan Tanaman Jurnal Riset Industri JURNAL KESEHATAN LINGKUNGAN (Journal of Environmental Health) BERITA BIOLOGI Indonesian Journal of Chemistry Jurnal Ilmu dan Teknologi Kayu Tropis Teknologi Indonesia Jurnal Penelitian Hasil Hutan Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society Jurnal Sylva Lestari Makara Journal of Technology Jurnal Ilmu Kehutanan Jurnal Ilmu Kehutanan International Journal of Renewable Energy Development
Wasrin Syafii
Departemen Hasil Hutan, Fakultas Kehutanan, Institut Pertanian Bogor Kampus IPB Darmaga, Bogor 16680
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Veterinary

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DAUR PATOLOGIS TEGAKAN HUTAN TANAMAN Acacia mangium Willd. Nuhamara, Simon Taka; Hadi, Soetrisno; Suhendang, Endang; Suhartono, Maggy T; Syafii, Wasrin; Achmad, Achmad
BERITA BIOLOGI Vol 9, No 1 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (858.66 KB) | DOI: 10.14203/beritabiologi.v9i1.804

Abstract

Heart rot on Acacia mangium Willd. forest stand is critical especially for mechanical or construction wood based purposes. Failure on understanding the nature and the way it get established into the tree stem may cause high economic consequences.Anticipating such a worse condition, studies on cull factor in relation to age was initiated. Eventually the study is aimed at healthy cutting cycles of the clear and purposely stand establishment. The study had been carried out at BKPH Parung Panjang, KPH Bogor. Following the cull factor measurement technique combined with the pathological rotation estimation procedures, it was found that the healthy volume was 0.0623 m and the cull factor was 31.25 %.The figures were at the age of nine years. Therefore, the pathological rotation cycle for the A. mangium stand in the area could be fitted at eight years, as being adopted so far.This is true, when the plantation is established for the production of wood, provided that the tending operation is optimal. Applying the United States Department of Agriculture (USDA) Forest Health Monitoring (FHM) indices, the general performance of the A. mangium forest stand in Parung Panjang is found to be in healthy criteria. The damage indices for all stand ages investigated varied from 2.77 (lowest) to 5.16 (highest) as compared to the 21.18 value, the possible highest FHM tree index.
Pengaruh Durasi Steam terhadap Kualitas Arang Aktif Limbah Sagu (The Effect of Steam Duration on Quality and Characteristics of Activated Charcoal of Sago Waste) Siruru, Herman; Syafii, Wasrin; Wistara, Nyoman J; Pari, Gustan
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

Sago waste is a potential biomass that can be used as active charcoal raw material. The objectives of this research were to know the effect of steam duration on quality and characteristics of activated charcoal of sago waste. Carbonization process was carried out at 400 ⁰C for four hours, then activation was carried out at 100 ml bar steam pressure, at a temperature of 800 ⁰C with variations of steam duration 60, 80 and 100 minutes and activation without steam, only heating for 60 minutes. The proximate test used the SNI standard, observed the functional group using Fourier Transform Infrared Spectrophotometer (FTIR) and observed the active charcoal structure using X-ray diffraction (XRD). The results showed that the yield, moisture content, volatile, ash content, fixed carbon, iodine absorption of activated charcoal of sago bark and sago soft core were, respectively, 39.22–84.10%, 4.63–6.39%, 3.03–5.06%, 7.74–33.43%, 61.54–88.63%, 158.60–972.60 mg g-1. XRD analyzes showed that the degree of crystalline activated charcoal of sago bark waste with the highest steam time of 100 minutes (35.98%) compared with the degree of crystalline other activated charcoal is only about 20.57-7.30%. FTIR spectroscopy results from activated charcoal of sago waste also identified nitrogen compounds such as NO2 at wave numbers 1370-1390 cm-1; 1530-1560 cm-1; 1620-1660 cm-1 and phosphorus compounds such as P-S at 200-500 cm-1 wave number; P=S at the wave number 500-850 cm-1.Keywords: carbonization, active charcoal, sago, steam
PERFORMANCE OF MICROWAVE PRETREATMENT ON ENZYMATIC AND MICROWAVE HYDROLYSIS OF BETUNG BAMBOO (Dendrocalamus asper) Fatriasari, Widya; Syafii, Wasrin; Wistara, Nyoman; Syamsu, Khaswar; Prasetya, Bambang
Teknologi Indonesia Vol 37, No 3 (2014)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jti.v37i3.232

Abstract

In this present study, we focused on how the changes in the best microwave pretreatment affected the performance of enzymatic and microwave hydrolysis of pretreated bamboo. This solid fraction was subjected to enzymatic hydrolysis following NRE L protocol and microwave acid-hydrolysis with/without presence of activated carbon (0.5 g/g) at 1% and 5% of sulfuric acid concentration for 512.5 m at 330 watt. Short duration microwave-acid hydrolysis of microwave pretreated bamboo showed better reducing sugar yield than that of enzymatic one. Microwave heating for 12.5 inm at 330 W hydrolyzed with 1% acid using microwave irradiation demonstrated a high reducing sugar yield (25.81% of dry biomass or 27.12% of dry substrate). In this treatment, 37.92% of hollocellulose can be converted into reducing sugar or equivalent to 36.12% of maximum potential sugar released. This yield was increased 6.09 times compared to the highest reducing sugar yield coming from enzymatic hydrolysis using 20 FPU/g of cellulase enzymes. Reducing sugar yield obtained with 5% microwave acid hydrolysis of microwave pretreatment for 5 m at 770 W was equal to the result of hydrolysis for 12.5 m at 330 W. Unfortunately, the activated carbon as solid catalyst in microwave hydrolysis could only reduce brown compound without reducing sugar yield improvement.
The characteristic changes of betung bamboo (Dendrocalamus asper) pretreated by fungal pretreatment Fatriasari, Widya; Syafii, Wasrin; J Wistara, Nyoman; Syamsu, Khaswar; Prasetya, Bambang
International Journal of Renewable Energy Development Vol 3, No 2 (2014): July 2014
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.3.2.133-143

Abstract

The fungal pretreatment effect on chemical structural and morphological changes of Betung Bamboo was evaluated based on its biomass components after being cultivated by white rot fungi, Trametes versicolor. Betung bamboo powder (15 g) was exposed to liquid inoculum of white rot fungi and incubated at 270C for 15, 30 and 45 days. The treated samples were then characterized by FT-IR spectroscopy, X-Ray diffraction and SEM-EDS analyses. Cultivation for 30 days with 5 and 10% loadings retained greater selectivity compared to that of the other treatments. FTIR spectra demonstrated that the fungus affected the decreasing of functional group quantities without changing the functional groups. The decrease in intensity at wave number of 1246 cm-1 (guaiacyl of lignin) was greater than that at wave number of 1328 cm-1 (deformation combination of syringyl and xylan) after fungal treatment. X-ray analysis showed the pretreated samples had a higher crystallinity than the untreated ones which might be due to the cleavage of amorphous fractions of cellulose. The pretreated samples have more fragile than the untreated ones confirmed by SEM. Crystalline allomorph calculated by XRD analysis showed that fungus pretreatment for 30 days has transformed triclinic structure of cellulose to monoclinic structure.
The Influence Of Reactant Ratio (Eupcalyptus Lignin – Sodium Bisulfite) And Initial Ph Towards Characteristcs Of Sodium Lignosulfonate Gustini Syahbirin; ABDUL Aziz Darwis; Ani Suryani; Wasrin Syafii
Jurnal Teknologi Industri Pertanian Vol. 19 No. 2 (2009): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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Abstract

Eucalyptus lignin was isolated from kraft black liquor through by acidification using H2SO4. Sulfonation of eucalyptus lignin produced sodium lignosulfonate (SLS) which can be used as dispersants, and emulsifier. In this research, sulfonation was carried out towards lignin with mass ratio of eucalyptus lignin-NaHSO3 (b/b) of 1:0.4, 1:0.5, and 1:0.6, and initial pH of 5, 6, 7, 8. Studies on the effect of various ratio of eucalyptus lignin versus NaHSO3 (1 based on w/w) and initial pH of 5,6,and 7 for the sulfonation reaction showed an  increasing yield and improved purity of SLS obtained.  However, no significant result was observed on the application of initial pH  7 and 8 toward increasing of SLS yield and purity.  The highest SLS  yield of 83.8% with  purity of 82.9% was obtained under condition of initial pH at 7 and the mass ratio of eupcayptus lignin over NaHSO3 was 1:0.5.  The resulted SLS was light brown, water soluble, with  pH level between 6.3 and 7.24, and released sulfur-like odor.Key words: lignin, kraft black liquor,  sodium lignosulfonate.
ARANG AKTIF SEBAGAI BAHAN PENANGKAP FORMALDEHIDA PADA KAYU LAPIS Gustan Pari, Kurnia Sofyan, Wasrin Syafii dan Buchari
Jurnal Teknologi Industri Pertanian Vol. 14 No. 1 (2004): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

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Abstract

ABSTRACTThis paper discusses the activated charcoal from jati (Tectona grandis L.f) sawdust used as catching agent of formaldehyde on plywood glued with urea formaldehyde. The activated charcoal was produced in a stainless steel retort with electrical heater at temperature of 8500C by using NH4HCO3 0.25 % as activating agent with reaction time of 90 minutes. To reduce formaldehyde emission from plywood, activated charcoal were added to urea formaldehyde adhesives at four levels i.e 0, 2, 4, 6 and 8 %. FTIR, XRD and SEM were used to evaluate the structure of activated charcoal. The results showed that the yield of activated charcoal was 53.11 %, moisture content 1.43 %, ash content 7.07 %, volatile matter 6.07 %, and fixed carbon 86.85 %. The adsorptive capacity of iodine 1196.6 mg/g, benzene 21.75 %, formaldehyde 48.12 % and methylene blue 319.18 mg/g and surface area 1183.4 m2/g. The quality of activated charcoal especially the adsorptive capacity of iodine has met the commercial standard requirement of the Japanese Standard. The structure of activated charcoal was polar, amorphous and macropore with pore diameter range from 1.3 – 1.6 m, degree of crystalinity 26.0 %, the height (Lc) and wide (La) were 2.47 and 13.42 nm. The number (N) of aromatics layer was 7.0.The free formaldehyde content of urea formaldehyde resin and the emission of formaldehyde from plywood decreased as the concentration of activated charcoal increased, and the bonding strength of plywood met the Indonesian and Japanese Standard requirement. Keywords: activated charcoal, jati, structure, iodine, formaldehyde, plywood
Bioethanol Production from Several Tropical Wood Species using Simultaneous Saccharification and Fermentation Processes M. Daud; Wasrin Syafii; Khaswar Syamsu
Wood Research Journal Vol 3, No 2 (2012): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2012.3.2.106-116

Abstract

The study was conducted to determine the best method of hydrolysis (saccharification) and fermentation for bioethanol production using simultaneous saccharification and fermentation process. Three different tropical wood species namely gmelina wood (Gmelina sp.), pine wood (Pinus merkusii) and oil palm (Elaeis guineensis Jacq.) were pre-treated using kraft process and then converted into bioethanol using simultaneous saccharification and fermentation (SSF) processes. The pulp produced by kraft process was analized to determine their chemical properties before treatments. SSF was performed in 500 ml fermentors with total slurry of 200 ml. The substrate and nutrient media were autoclaved (121ºC and 20 min). The samples diluted to 2.5% (w/v) of total slurry were used as substrate. The enzyme preparation used commercial cellulase enzyme. The amount of cellulase added was 4 and 8% (w/w) of dry mass of samples. All SSF process was conducted by inoculating yeast Saccharomyces cerevisiae into fermentor in the amount of 10% (v/v) 1.5 x 109 CFU/cc. The SSF experiments run for 96 h, and the data were investigated periodically every 24 h. The results showed total sugar and reducing sugar tended to decrease with time of inoculation whereas ethanol concentration increases significantly. The growth of yeast Saccharomyces cerevisiae tended to incease in initial inoculation and decrease by the end of inoculation. The best method of hydrolysis (saccharification) and fermentation using SSF process for all tropical wood species tested were using cellulase 8% of dry mass (DM) and 10% (v/v) of Saccharomyces cerevisiae which produced bioethanol with concentration of 0.98; 0.57 and 0.51% for gmelina, pine and oil palm respectively and produced yields 11.21, 5.85 and 3.20%, in that order. 
Bioethanol Production from Several Tropical Wood Species using Simultaneous Saccharification and Fermentation Processes M. Daud; Wasrin Syafii; Khaswar Syamsu
Wood Research Journal Vol 3, No 2 (2012): Wood Research Journal
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2012.3.2.106-116

Abstract

The study was conducted to determine the best method of hydrolysis (saccharification) and fermentation for bioethanol production using simultaneous saccharification and fermentation process. Three different tropical wood species namely gmelina wood (Gmelina sp.), pine wood (Pinus merkusii) and oil palm (Elaeis guineensis Jacq.) were pre-treated using kraft process and then converted into bioethanol using simultaneous saccharification and fermentation (SSF) processes. The pulp produced by kraft process was analized to determine their chemical properties before treatments. SSF was performed in 500 ml fermentors with total slurry of 200 ml. The substrate and nutrient media were autoclaved (121ºC and 20 min). The samples diluted to 2.5% (w/v) of total slurry were used as substrate. The enzyme preparation used commercial cellulase enzyme. The amount of cellulase added was 4 and 8% (w/w) of dry mass of samples. All SSF process was conducted by inoculating yeast Saccharomyces cerevisiae into fermentor in the amount of 10% (v/v) 1.5 x 109 CFU/cc. The SSF experiments run for 96 h, and the data were investigated periodically every 24 h. The results showed total sugar and reducing sugar tended to decrease with time of inoculation whereas ethanol concentration increases significantly. The growth of yeast Saccharomyces cerevisiae tended to incease in initial inoculation and decrease by the end of inoculation. The best method of hydrolysis (saccharification) and fermentation using SSF process for all tropical wood species tested were using cellulase 8% of dry mass (DM) and 10% (v/v) of Saccharomyces cerevisiae which produced bioethanol with concentration of 0.98; 0.57 and 0.51% for gmelina, pine and oil palm respectively and produced yields 11.21, 5.85 and 3.20%, in that order. 
ANTI FUNGAL ACTIVITY OF WOOD EXTRACT OF Aquilaria crassna Pierre ex Lecomte AGAINST AGARWOOD-INDUCING FUNGI, Fusarium solani Eka Novriyanti; Erdy Santosa; Wasrin Syafii; Maman Turjaman; Irnayuli R. Sitepu
Indonesian Journal of Forestry Research Vol 7, No 2 (2010): Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2010.7.2.155-165

Abstract

This paper provided information regarding artificial agar wood production. Fungi are considered as biological agent for agarwood formation and agarwood is assumed as tree defense mechanism product. This research was aimed at investigating the anti fungal activity (AFA) of Aquilaria crassna, one of the agar wood-producing trees, against Fusarium solani in vitro. Aquilaria crassna wood mill was extracted by 70% ethanol to investigate the anti fungal activity. The result are Aquilariacrassnaexhibited low extractives content, which was only 2.0% (w/w) and a low anti fungal activity in vitro, especially for ethanol extract. However, further fractionation and bioassay showed that the most active component was likely in the ethyl-acetate soluble fraction that exhibited strong anti fungal activity (52.5%) at 4.0% of concentration.
BIOLOGICAL ACTIVITIES AFFORDED BY THE EXTRACT FROM RARU BARK TO INHIBIT ACTION OF ALPHA- GLUCOSIDASE ENZYMES Gunawan Pasaribu; Wasrin Syafii; Latifah K. Darusman
Indonesian Journal of Forestry Research Vol 8, No 1 (2011): Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2011.8.1.32-49

Abstract

Raru (Shoreabalanocarpoides Sym) signifies one of the tree species that grows widespread in Sumatra Island.  Its bark portion is commonly used by local villagers as additional ingredient mixed to nira (sugar palm juice).  This addition is intended to make the juice more durable and also to enrich its taste after the juice is previously fermented to become traditional toddy beverage or the so-call “tuak”.  Local villagers believe that raru bark can reduce the level of blood sugar. As the relevance, the research was conducted to confirm that the extract from raru bark could afford its biological activities to inhibit alpha-glucosidase enzyme through its characterization, quantification, and isolation of its boactive compound. The extraction was performed using two methods (i.e.reflux and maceration techniques). Result revealed that the bark extract obtained from both techniques contained polyphenol compounds: flavonoid, saponin and tannin. Further, raru-bark extract from the reflux and maceration techniques could inhibit the action of alpha glucosidase enzymes on carbohydrate substrate ( i.e. p -nitrophenil-α-D-glucopyranose), at respectively 90.67% and 97.33%. Meanwhile, the inhibition activities afforded by the patented drug as a control (i.e. glucobay) equaled to 97.05%.  Assesment using UV-VIS spectroscopy, showed that the maximum spectrum of bioactive compound in the extract was at the wave length of 288.6 nm. Scrutiny using FTIR spectroscopy could identif y the presence of aromatic groups in the compound, containing -OH, C-H, C=C, C-O and C-H bond types. Analysis using GC-MS exhibited that the compound had molecular weight of 390 with molecular structure as C20H22O8. Ultimately, data analysis scrutiny with the aid of NMR judged the most plausible compound as bioactive was 4-Glucosyl-3, 4’, 5-trihydroxystilbene.
Co-Authors Abdul Aziz Darwis Achmad Achmad Achmad Achmad Adesna Fatrawana Adesna Fatrawana Akhiruddin Maddu Akhirudin Maddu Akhirudin Maddu Amril Aman Anak Agung Istri Sri Wiadnyani Ani Suryani Anne Carolina Bambang Prasetya Bambang Prasetya Bambang Prasetya Bintang C. H. Simangunsong Buchari Buchari Buchari Buchari Deded Sarip Nawawi Denny Irawati Desi Melianti Dewi R Agungpriyono E Gumbira Sa, E Gumbira Eka Novriyanti Eka Novriyanti Eko Budi Santoso Eko S Pribadi Elis Nina Herliyana ENDANG SUHENDANG Erdy Santosa Erdy Santosa Evie Nihayah Fabianus Ranta Fahriya Puspita Sari Faizatul FALAH Fathul Yusro Fauzi Febrianto Gunawan Pasaribu Gunawan Pasaribu Gustan Pari Gustan Pari Gustan Pari Gustan Pari Gustan Pari Gustan Pari Gustan Pari Gustan Pari Gustan Pari Gustan Pari Gustan Pari Gustan Pari Gustini Syahbirin Herman Siruru Herman Siruru Hikma Yanti Hiroyuki Yamamoto Husni Y Rosadi, Husni Y I MADE ARTIKA I Nyoman Jaya Wistara IGK Tapa Darma Illah Sailah Imam Wahyudi Indrawan, Imam Wahyudi Irmanida Batubara Irnayuli R. Sitepu Irnayuli R. Sitepu Iskandar Z Siregar Istie Rahayu Izza Firdausi Hadiyanto Jemi, Renhart Juliasman Juliasman Karliati, Tati Khaswar Syamsu Kosei Yamauchi Kurnia Sofyan Kurnia Sofyan Kurnia Sofyan Laela N. Anisah Laela Nur Anisah Latifah K. Darusman Latifah K. Darusman Lucky Risanto M. Daud Maggy T Suhartono Maggy T Suhartono Maman Turjaman Maman Turjaman Maya Ismayati Mody Lempang Mody Lempang Mody Lempang Muflihati Muflihati Muhammad Adly Rahandi Lubis Muhammad Fadli Muhammad Hanafi Nissa Nurfajrin Solihat Norman Razief Azwar Nugraha, Arifin Budiman Nur Adi Saputra Nur Azizah Pudja Mardi utomo Pudja Mardi utomo Purwoko, Agus Rahmi Mauladdini Renhart Jemi Rita K Sari Rita Kartika Sari Romi Irka Putra S Heris Anita Saat Egra Santiyo Wibowo Santiyo Wibowo Santiyo Wibowo Saptadi Darmawan Saptadi DARMAWAN Simon Taka Nuhamara Simon Taka Nuhamara Siruru, Herman Siti Maemunah Siti Sa'diah Siti Sa'diah Soetrisno Hadi Soetrisno Hadi Sri Familasari Suminar A Achmadi Suminar S Achmadi Syamsul Arifin Tohru Mitsunaga Umi Cahyaningsih Widya FATRIASARI Widya FATRIASARI Widya Fatriasari Widya Fatriasari Yanico Hadi Prayogo Yanotama T Laksana Yanti Hikma Yusup AMIN