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Jurnal Kimia Terapan Indonesia

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Published by Lembaga Ilmu Pengetahuan Indonesia

ISSN : 08532788 EISSN : 25277669 DOI : -

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology

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Articles 283 Documents

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PENGEMBANGAN MATERIAL SERBUK SILIKA UNTUK IDENTIFIKASI SIDIK JAR! Christine Elishian; Rosi Ketrin
Jurnal Kimia Terapan Indonesia Vol 13, No 1 (2011)
Publisher : Research Center for Chemistry - LIPI

Development of powder material for fingerprint identification has become Indonesian Department of Safety and Defense priority, especially it was written in the National Research Agenda 2006 -2009. Until now Indonesia still imported thepowder from United States and Japan. Powder fineness is one of the important factors, because finer the powder, more easily it stick to the latent fingerprint and better visualization result will be obtained. In this research, nanosilica was fabricated by used TEOS (tetraethoxysilane) as precursor. Nanosilica is an adhesive material in fingerprint powder while carbon is a coloring agent. In this research nanosilica and carbon black composition was optimized, and the powders were characterized and tried in order to get afingerprint powder which have a better quality to be used by National Police and therefore it can support Indonesian autonomy in safety and defense.Key words: Fingerprint identifier material, nanosilika, TEOS, carbon black

PENGARUH SENYAWA SILAN TERHADAP SIFAT MEKANIK MATERIAL PELAPIS PADUAN HIBRID EPOKSI TERMODIFIKASI POLIURETAN Savitri Savitri; Evi Triwulandari; Agus Haryono; O A Syahputra
Jurnal Kimia Terapan Indonesia Vol 17, No 1 (2015)
Publisher : Research Center for Chemistry - LIPI

Preparation of hybrid coating material from modified epoxy polyurethane (ETP) and silan (Si) has been done. Epoxy and polyurethane were modified with silan using Î³-Glisidoksil propil trimetoksisilan (GPTMS) and Î³-aminopropyl triethoxysilane (Î³-APS) and also dibutyltindilaurate (DBTL) as catalyst. Fourier Transform Infrared (FTIR) characterization indicated that the hybrid coating material has been formed. The results of the analysis of NCO percent and conversion rate of isocyanates (Î±) also verified that the ETP-Si hybrid coatings have been formed. The addition 30% of silane as Si-O group indicated the rest of NCO percent was the lowest for hybrid coating material with polyurethane concentration of 5% and 10. The composition of ETP5% - Si 30% was the optimum composition from the ETP-Si hybrid coating material based on the mechanical analysis.Key words: hybrid coating, polyurethane, epoxy, silane, ETP â€“ Si

PERAN ILMU PENGETAHUAN DALAM MEMPERKUAT UPAYA PENGENDALIAN PENCEMARAN LINGKUNGAN YANG EFEKTIF Roy Heru Trisnamurti
Jurnal Kimia Terapan Indonesia Vol 9, No 1-2 (1999)
Publisher : Research Center for Chemistry - LIPI

Briquettes from Tobacco Stems as the New Alternative Energy Okta Prima Indahsari
Jurnal Kimia Terapan Indonesia Vol 19, No 2 (2017)
Publisher : Research Center for Chemistry - LIPI

Tobacco briquettes is the new alternative energy developed in PTPerkebunan Nusantara X (PTPN X). The tobacco briquettes research isimportant for PTPN X because of three reasons: high availability of theraw material, it can be used as substitution for coal briquettes, andexpected for industrial scale. Currently, many researches have beenconducted for biomass-briquettes but only few who used tobacco. PTPN Xhave been cultivated tobacco only for its leaves which latter used for cigarand the rests were thrown as waste. By conducting the tobacco briquettesresearch, many forms of utilization are expected. For short term, the aimof this research is generating a diversification of added value - producfrom tobacco. For middle term, PTPN X is expected to be the role modelfor the tobacco growers. For long term, PTPN Xlâ€™s goal is to decreasecoal briquettes usage and break the negative stigma of tobacco.Briquetting process was conducted in Physical Laboratory of TobaccoResearch of Jember and the observation located in Tobacco ProcessingBarn of Ajong Gayasan PTPN X. Analysis of proximate test showed thatthe moisture content of tobacco briquettes with cassava starch as adhesivewas 8.00 to 8.97%, the volatile matter was 49.60 to 41.13%, the ashcontent was 9.93 to 7.89%, the fixed carbon was 32.47% to 42.01%, thesulphur content was 1.02 to 0.49%, the bulk density was from 0.35% to0.41%, the calorific value was from 4,285 to 4,586 cal/gr, and flammableduration was from 592 to 697 minutes. The briquetting process did notaffect the taste of leaves as cigar material.

CHEMICAL CATALYTIC AND BIOCATALYTIC PROCESS OF CLOVE OIL DERIVATIVES REVIEW Silvester Tursiloadi; Nina Artanti; Anny Sulaswatty
Jurnal Kimia Terapan Indonesia Vol 17, No 1 (2015)
Publisher : Research Center for Chemistry - LIPI

In 2011, Indonesian clove oil supply reached about 75 % (4,500 of 6,000 tons) of the world market. Utilization of clove oil and clove oil derivatives in aromatic chemical industry primarily as a mixture or additive of fragrances in the daily consumed product, such as perfumes, skin care products, deodorant, soap, shampoo, detergent, besides it is also used as an ingredient in the production of synthetic vanilla.Â The content of eugenol as the main compound in the essential oil in the clove flower, flower stalk and leaf have a range of 90-95 %, 83-95 % and 82-87 % respectively.Â The compounds content in clove oil is divided into two categories, phenolics (eugenol) and non-phenolic (beta-caryophyllene) that can be derivatized with various chemocatalytic and biocatalytic processes. Separation of the compounds in clove oil can be conducted by adding NaOH with repeated distillation. This process produces two layers product, the first layer contains eugenol and NaOH, while the second layer contains beta-caryophyllene. Derivatization of eugenol are conducted to produce various products such as vanilla, eugenyl ether, methyl ether eugenyl, eugenyl ethyl ether, eugenyl acetate, eugenyl cinnamate, dimmer eugenol and eugenyl benzoate, whereas derivatization of beta-caryophyllene are conducted to produce products such as caryophyllene oxide, kobusan, glycols, alcohols caryophyllene, Î²-caryolanylformate and kovanilformate, klovanildiformate, caryophyllene ketol.Â Biocatalysis or biotransformation can be defined as the use of biological systems (intact cells, cell extracts or isolated enzymes) to catalyze the conversion of a compound into another. Besides the common chemocatalysis system for derivatization of clove oil and clove oil compound such as eugenol into other compounds some biocatalysis systems were also described in this paper.Keywords: Clove oil, eugenol, beta-caryophyllene, derivatization, chemical catalysis, biocatalysis

PENGARUH PEMANASAN BIJI KACANG Pisum sativum L var. "Belinda" DENGAN SINAR INFRA MERAH TERHADAP NILAI DAYA CERNA DAN ENERGI METABOLISME NITROGEN TERKOREKSI PACA AYAM Patuan L.P. Siagian
Jurnal Kimia Terapan Indonesia Vol 8, No 1-2 (1998)
Publisher : Research Center for Chemistry - LIPI

Legume seed of peas (Pisum sativum) was radiated by infrared of 2450 MHz for 0, 80 and 100 seconds in a gas-type experimental radiator. Three levels of initial seed moisture content (13%, 17%, and 21%) was regulated by the moistening double-spiral mixer. The apparent digestibility of the nutrients of the treated seeds was evaluated using 96 five-week old male chicks of LSL-Brown in a full automatically adjustable climate conditioned room.The results of this experiment showed a Significant increase of nutrient digestibility of the peas by infra-red treatment; p 0.01 for fat, p 0,001 for dry matter, organic matter, starch, and nitrogenfree extract. The exposure time to infra-red treatment/or lOa seconds (seed temperature 0f 115 °C) increased limiting amino acids digestibility, namely lysine from 84.51% to 91.47%, threonine from 73.24% to 81.37%. and methionine from 61.20% to 77.70%.

KROMATOGRAFI LAPISAN TIPIS (KLT) DAN KROMATOGRAFI CAIRAN KINERJA TINGGI (KCKT) DARI SOLASODIN, AD DAN ADD Julia Kantasubrata; Loyniwati Loyniwati; Jamilah Jamilah; A. T. Karossi
Jurnal Kimia Terapan Indonesia Vol 3, No 2 (1993)
Publisher : Research Center for Chemistry - LIPI

Thin Layer Chromatography (TLC) and High Performance Liquid Chromatography (HPLC) have been used to separate solasodlne, 4androstene-3,17-dione (AD) dan 1,4-androstadiene-3,17-dione (ADD)resulted from bloconversion process of solasodlne using Mycobacterium phlei DSM 43286. In order to minimize the consumption of materials, the separation condition of HPLC could be looked for through TLC method. Two kinds of chromatographic interaction i.e. normal phase and reversed phase chromatography using respectively silica and CIS as stationary phase have been tried. In normal phase chromatography, there are still difficulties for eluting solasodine from silica column, since solasodine has relatively low Rj value. While in reversed phase chromatography, solasodine could be eluted from CIS column, only if the mobile phase is buffered. The selection of solvent systems for this separation should also consider the relatively low UV-Cut-Off of individual solvent, since detection of solasodine requires operation at 205nm. The minimum limit detection which is measured at 240 11m was found to be 0.92 ng AD and 1.54 ng ADD, while the smallest amount of solasodine which could be detected at 205 nm was 3.39 ng. Diode array detector could be used for confirming the solute peaks produced in bioconverslon process.

PENGGUNAAN BAHAN ACUAN BERSERTIFIKAT OYSTER TISSUE 1566b SEBAGAI INTERNAL QUALITY CONTROL UNTUK MENENTUKAN KADAR TIMBAL TOTAL DALAM TEPUNG IKAN MARLIN DENGAN ELECTROTHERMAL ATOMIC ABSORPTION SPECTROMETRY Willy Cahya Nugraha; Yohanes Susanto Ridwan
Jurnal Kimia Terapan Indonesia Vol 17, No 2 (2015)
Publisher : Research Center for Chemistry - LIPI

Lead is widely knows as one of the harmful pollutants for humans. Contaminated fishery built by lead may endanger the consumption body. Therefore, contamination monitoring for the fishery products is necessary to be conducted. To ensure the validity of data, Oyster Tissue 1566b certified reference material was used as Internal Quality Control. Marlin fish powder and certified reference materials were analyzed with the same method, personnel, duration or time, equipment and environmental conditions. As the results, it was found that the lead contained in CRM was 0.306 mg.kg-1 with 11.9 % rsd, which is within range of lead content inÂ the certificate. The method was applied for Marlin Fish. Lead content obtained in this study (1.821 mg.kg-1 with 11.06 % rsd) can be reported with high level of confidence.Keywords: Lead, Certified Reference Materials, Marlin fish

KECENDERUNGAN PENGEMBANGAN SURFAKTAN . Penggunaan bahan dasar karbohidrat Syahrul Aiman
Jurnal Kimia Terapan Indonesia Vol 8, No 1-2 (1998)
Publisher : Research Center for Chemistry - LIPI

KARBON AKTIF HASIL DEKOMPOSISI TERMAL LIMBAH KERAK CAT BESERTA KARAKTERISASINYA Yohanes Susanto Ridwan
Jurnal Kimia Terapan Indonesia Vol 11, No 2 (2009)
Publisher : Research Center for Chemistry - LIPI

Automotive sector which is one of the biggest industry has been producing paint sludge waste in enormous amount that could be dangerous for environment sustainability. To overcome this problem of course waste treatment approach is important, butsomehow the big investment and operational cost is often become restriction in adopting this kind of approach.Another alternative was to process the paint sludge waste onto more useful product (recycle). The large fraction of organic material in paint sludge has leaded an opportunity to recycle this waste ontoactivated carbon through thermal decomposition and activation process. Thermal decomposition process in 310°C without activation step has produce activated carbon which has iod number 104.81 mg/g, while the same decomposition process continue with activation step give iod number 91.87 mg/g. These results indicate that paint sludge waste could be recycle onto activated carbon which not only could reduce the environmentpollution but also could give economical benefit. Another characterization also done by DTA and FTIR to get additional information about the surface topography and chemicalfunctional groups of activated carbonproduced.Keyword: adsorben t, activation, thermaldecomposition, activated carbon, paintsludge

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