Garuda - Garba Rujukan Digital

All

Jurnal Kimia Terapan Indonesia

InaJAC
Website

Published by Lembaga Ilmu Pengetahuan Indonesia

ISSN : 08532788 EISSN : 25277669 DOI : -

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

Arjuna Subject : -

Articles 283 Documents

4 5 6 7 8

SINTESIS DAN KARAKTERISASI NANOKOMPOSIT KONDUKTIF NANOFIBER Muhamad Nasir
Jurnal Kimia Terapan Indonesia Vol 15, No 1 (2013)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jkti.v15i1.105

Conductive composite polyanilinelPVDF nanofiberhas been synthesized by using co-axial electro spinning.Morphology and diameter of nanofiber was influenced byPVDF polymer concentration and the type of solvent. Beadednanofiberwas formed at lower polymer concentration. On thecontrary, free beaded nanofiber was formed at higherpolymer concentration. Result of FTIR analysis showed thatPVDF crystal structure was dominant by p-phase crystalstructure. Conductive composite nanofiber has potentialapplication in sensor, actuator and airfilter.Keywords: Conductive composite nanofiber, co-axialelectrospinning, polyaniline/pvdf compositenanofiber

PENGARUH KONVEKSI MOLEKUL TERHADAP DISTRIBUSI WAKTU TINGGAL Putut Irwan Pudjiono
Jurnal Kimia Terapan Indonesia Vol 5, No 1 (1995)
Publisher : Research Center for Chemistry - LIPI

Residence Time Distribution studies were performed in a continuous vertical Couette Flow device under the conditions of negligible molecular diffusion. Most of the experiments were carried out in the laminar flow region. Diethylene glycol (DEC, 'Analar grade', BDH, Poole) were used as the flowing fluid. 1% Congo red dye solution in DEC was used as the tracer and it was injected as an impulse input through the injection port situated at the bottom of the device. The temperature was maintained at 20°C during the course of the experiments. The responses were analyzed using the mixing cup technique. The C-curves obtained were analyzed theoretically using the equation originally derived for flow through annulus. Such an approach was applied since both Couette and annular flow device have similar geometry. The responses of the secondary flow induced by the cylinder rotation at Tas>Tac were expected to be observed as the curve change from the curve characterizes the laminar flow through annulus to normal distribution.

BIOOEGRAOASI SENYAWA AROMATIK OLEH PSEUDOMONAS SP ISOLAT I4 DARI TABLET BAKTERI T. Sembiring; Lies Sriwuryandari
Jurnal Kimia Terapan Indonesia Vol 10, No 1-2 (2000)
Publisher : Research Center for Chemistry - LIPI

Biodegradation test of aromatic compounds by pure cultureof bacterial isolate I4 from bacterial tablet using mineral mediumas growth medium was done. Aromatic compounds tested ascarbon sources used were phenol, p-chlorphenol, p-nitrophenol,2,4 dichlorphenol and benzene. The oval colony forming and highmotility isolate is an aerobic and gram negatif bacteria. Theisolate was able to use citric acid as carbon source, producedacid .from methyl red test and gave negative result of indol test.The isolate formed a slightly blue-green colour colony on agarslant, and it did not use ethanol as carbon source. Thecharacteristic of the isolate I4 indicated that it belonged to thegenus Pseudomonas. Test using selective media confirmed thatthe isolate I4 is a Pseudomonas fluorescence. The capability ofthe bacteria to oxidize of 2,4 dichlorphenol was relatively fast.Experimental results showed that the bacteri grew on benzene atconcentration of 10% (v/v), and degraded 2,4 dichlophenol withrelatively high rate.Keywords: Bacterial tablet, aromatic compounds, phenol. pchlorphenol,2,4 dichlorphenol, p-nitrophenol, benzene, pure culture,Pseudomonas fluorescence, isolate I4

KARAKTERISTIK BIO-OIL HASIL PIROLISIS AMPAS TEBU Emi Erawati; Wahyudi Budi Sediawan; Panut Mulyono
Jurnal Kimia Terapan Indonesia Vol 15, No 2 (2013)
Publisher : Research Center for Chemistry - LIPI

Bagasse (Saccarum oficinarum L) is a waste of sugar mills that can be utilized for a variety of chemicals. The purposes of this study are to determine the percentage of compounds and physical properties of bio-oil, to determine the effect of variations of particle size and heating rate on the yields of bio-oil. Pyrolysis has been carried out in a reactor made of steel pipe type 5737 with dimension: diameter 7.62 em and a length of 3 7 cm.. The reactor was inserted into the furnace with a diameter of 15.24 em and a length of 40 em. One hundred and fifty grams of bagasse (Saccarum oficinarum L) has been inserted into the reactor without the presence of oxygen at atmospheric pressure. Pyrolysis has been carried out at the particle size of (-20+25) mesh, (-25+30) mesh, (-30+35) mesh, (- 35+40) mesh, and -40 mesh with electrical voltage of 100, 105, 115, and 120 volt. Produced of bio-oil has the following properties: brown color, pH of 2.96 to 3.03, viscosity of 1.3306 to 1.5101 cp, and density of 1.03 to 1.5 g/mL. The largest content of the compound is acetic acid (59, 72%). The highest yields percentage of the particle size is (40,32%) on (-20+25 mesh) with the highest yields percentage of electrical voltage is 38,82% on 105 volt.Keywords : Bagasse, acetic acid, bio-oil, pyrolysis, yields

CYTOTOXIC ISOFLAVONOIDS OF PACHYRRHiUS EROSUS SEEDS Leonardus B.S. Kardono; Soefjan Tsauri; John M. Pezzuto; A. Douglas Kinghorn; Kosasih Padmawinata
Jurnal Kimia Terapan Indonesia Vol 4, No 2 (1994)
Publisher : Research Center for Chemistry - LIPI

By bioactivity-directed fractionation, phytochemical and cytotoxic studies of the seeds of Pachyrrhizus erosus L. resulted in the isolation of isoflavonoid-based compounds, one novel compound and eight known compounds, comprising the novel coumaronochromene, pachyrrhisomene {1}, the known pterocarpan, neodulin {2}, the known 3-arylcoumarin, pachyrrhizin {3}, the known isoflavonoid, dehydroneotenone {4}, five known rotenoids, rotenone {5}, l2a-hydroxyrotenone {6}, 12a-hydroxypachyrrhizone {7}, 12a-hydroxyerosone {8}, and 12a-hydroxymunduserone {9}. The identities of these compounds were elucidated or confirmed using combination of modern one- and two- dimensional NMR techniques, such as 1H-1H COSY, CSCMID, 1H-1H NOESY, and selective INEPT, as well as by comparison with published spectroscopic data. It is likely that the novel compound, pachyrrhisomene {1} is derived from the same biosynthetic intermediate as the pterocarpan, neodulin {2}. All of these compounds were evaluated for their anticancer potential in a battery of tumour cell lines, comprishing P-388 lymphocytic leukemia, KB-carcinoma of the nasopharynx, a multi-drug resistant variant of KB, KB-VI, and a number of human cancer cell lines derived from a variety of tumour types, namely fibrosarcoma, lung, colon, melanoma, and breast. Two compounds, rotenone {5} and 12a-hydroxyrotenone {6} were observed to exhibit potent but nonspecific activity.

KANDUNGAN INULIN DARI UMBI DAHLIASp YANG DITANAM PADA JENIS TANAH VERTISOL, INCEPTISOL DAN ANDISOL Yetti Mulyati Iskandar; Sri Pudjiraharti; Diah Ratnaningrum
Jurnal Kimia Terapan Indonesia Vol 16, No 1 (2014)
Publisher : Research Center for Chemistry - LIPI

Tujuan dari penelitian ini adalah menentukan kandungan inulin dari umbi Dahlia sp yang ditanam didaerah sejuk seperti Cianjur, Lembang dan Sukabumi pada jenis tanah yang berbeda dalam rangka rencana produksi di Jawa Barat. Inulin adalah oligosacharida yang terjadi secara alami dengan komposisi gabungan fruktooligosacharida dariÂ oligomerÂ denganÂ derajat polimerisasi yang berbeda. Umbi dahlia dariÂ bunga berwarna ungu, merah, kuning dan putih yang ditanam di tiga lokasi digunakan sebagai sumber inulin. Metode ekstraksi yang digunakan yaitu cara ekstraksi berdasarkan kelarutan inulin dalam air pada suhu 800 C dan pengendapan dilakukan dengan etanol 30%. Hasil penelitian menunjukkan kadar inulin dari umbi bunga warna merah yang ditanam pada tanah Inceptisols (Sukabumi) memiliki kadar inulin tertinggi yaitu sebesar 17,99%, gula total 19.13%, karbohidrat 8.02%, kadar abu 0,15% sementara kadar inulin terendah pada jenis tanah Vertisols (Cianjur) yaitu 14.90%, gula total 26.61%, karbohidrat 8.66% kadar abu 0.17% sementara jenis tanahAndisols (Lembang) menghasilkan inulin dengan Â kadar inulin 11.84%, gula total 12.48%, karbohidrat 9.38% dan kadar abu 0.09%. Kata kunci :Umbidahlia , inulin, vertisols inceptisols, andisols, karbohidratÂ The objectives of this research were toÂ measure inulin content of Dahlia sp tubers widely planted in cool area such as Cianjur, Lembang and Sukabumi at different soil type in order to produce inulin in West Java. Inulin is a naturally occurring fructooligosaccharide composed of a mixture of oligomers of varying degrees of polymerization. Dahlia tuber of flower such as violet, red, yellow and white colour was planted on different location used as the source for inulin. The extraction methods was used base on inulin dissolve in water at 800 C and precipitation was carried out by using ethanol 30%.The results indicated that inulin powder of red flower was planted on inceptisols ( Sukabumi) has the highest level of inulin that was 17.99%, total glucose 19.13%, carbohydrate 8.02%, ash 0.15% .The lowestÂ inulin content was detected in vertisols type ( Cianjur) as much asÂ 14.90%, total glucose 26.61%, carbohydrate 8.66%, ash 0.17% meanwhile Â andisols type has inulin concentration 11.84%, total glucose 12.84%, carbohydrate 9.38% and ash 0.09%. Key words:Dahlia tuber, inulin, vertisols inceptisols, andisols, and carbohydrat

Proses Dekomposisi untuk Pembuatan Serbuk Alumina dari Aluminium Format Silvester Tursiloadi
Jurnal Kimia Terapan Indonesia Vol 9, No 1-2 (1999)
Publisher : Research Center for Chemistry - LIPI

The high purity excellent chemical stability and mechanical properties, is quite important for alumina ceramic products. The alumina ceramic products was made from aluminium formate in this study. Decomposition of organic salts is a useful method for preparation of pure and fine ceramic powder without using of expensive metal alkoxides and without producing air pollution. The aluminium formate alt was prepared from reagent grade AlCl3.6H2O,AlCl3.6H2O was dissolved in H2O and then NH4OH was added to the solution. The white precipitates formed were washed with distilled water repeatedly, then dissolved in formic acid solution. Alumina powders prepared by decomposition of aluminium formate had high chemical purity and had small size of agglomerates with a narrow size distribution. The spesific surface area and the equivalent spherical diameter calculated from the value of spesific surface area were 60 m2/gr and 0.03um. The value of equivalent spherical diameter of Al2O3 powder in cumulative mass percent for finer particle were diameter (10%) of 1.7um and diameter (50%) of 5,5um. The average diameter of particles was 5.5um. For the alumina powders which was prepared by docomposition of aluminium formate, the x- Al2O3 and x- Al2O3 did not appear as intermediate phase between y- Al2O3 and a- Al2O3 when calcinated from 800°C to 900°C .However a- Al2O3 phase appeared at 800°C, so that this could reduce the transition temperature from y- Al2O3 to a- Al2O3. The single phase of a- Al2O3 was obtained after calcinating at 1100°C or more for 2 hours.

Synthesis and cytotoxicity assay using Brine Shrimp Lethality Test of Cinchonidine Isobutyrate Ester Mario Mario; Puspa Dewi Lotulung; Gian Primahana; Sylvia Rizky Prima; Muhammad Hanafi
Jurnal Kimia Terapan Indonesia Vol 19, No 1 (2017)
Publisher : Research Center for Chemistry - LIPI

This research was aimed to synthesize cinchonidine isobutyrate ester and conduct a preliminary assay for anticancer agent using cytotoxicity assay to Artemia salina Leach larva, or also known as brine shrimp lethality test (BSLT). Cinchonidine, a compound that has quinoline rings and quiniclidine ring, is a quinine analogue and stereoisomer of cinchonine. Cinchonidine is predicted to have anticancer activity. Synthesized ester was aimed to gain higher lipophilicity. Higher lipophilicity makes it easier for the compund to pass through cell membrane. The esterification process used DMAP as a catalyst, DCC as an activator, and isobutyric acid as a carboxilyc acid. Isobutyric acid is a type of short chained fatty acid that usually acts as an anticancer prodrugs. The product is identified by ESI-MS, FT-IR, 1H-NMR, dan 13C-NMR. Ester cinchonidine isobutyrate is gelatinous and colourless with yield of 21,77%. BSLT result showed that cinchonidine isobutyrate ester had LC50 value of 75.16 ppm which was more toxic than cinchonidine that had LC50 value of 99.2 ppm. It was proved that higher lipophilicity could increase pharmacology activity

Aktivitas Anti Jamur 2,3-dihidroksipentadekanoat dari Kayu Mahalilis (Palaquium sp.) Renhart Jemi; Wasrin Syafi; Fauzi Ferbianto'; Muhammad Hanafi
Jurnal Kimia Terapan Indonesia Vol 14, No 1 (2012)
Publisher : Research Center for Chemistry - LIPI

The objectives of this research were to evaluate the extractive content of hartdwood of mahalilis wood (palaquium sp.) and identification of bio-acttve compounds wood decay fungi. Mahalilis wood was macerated with MeOH and then partitioned in stages wiht the n-hexane, CHCI31 EtOAc and n-BuOH, respectively. The result of antifungal test, show the most active 14 fraction CHCl3 comparedfraction and negative controls (CCB and itraconazole). Purification of CHCl3 fraction was column chromatographedproduced five fraction (M-I-M-5). TheM2 active fraction shown inhibited the growth to Schizophyllum communeFries withIC(so) is 56ppm and Pleurotus ostreatus with IC(so)= 55 ppm. The M2 fraction of dark brownish yellow color oil, was identified by LC-MS and IH NMR, as 2,3-dihydroxypropylpentadecanoate.Key words: Palaquium sp., antifungal, Schizophyllumcommune Fries, Pleurotus ostreatus, 2,3-dihydroxypropylpentadecanote.

PRODUKSI GLUKOAMILASE DARI RHIZOPUS ORYZAE SKALA FERMENTASI 2 LITER DAN 4 LITER Linar Z. Udin; Ngadiman Ngadiman; A. T. Karossi
Jurnal Kimia Terapan Indonesia Vol 4, No 1 (1994)
Publisher : Research Center for Chemistry - LIPI

Production of glucoamylase by R. oryzae has been conducted in erlenmeyer flasks using medium containing sago starch as carbon source and soybean meal as nitrogen source. It was known that 2 % of sago starch and 0.5 % of soybean meal in the medium is the best composition for the production of glucoamylase. At the present study, the optimal condition for maximal production of glucoamylase fermentation from R. oryzae was investigated using sago starch medium in the 2L and 4L scale. The results showed that the maximum production of glucoamylase at 600-1500 ml fermentation scale was reached at day-8 of incubation time. At this condition, the enzyme specific activity was 0.85 U/mg protein - 1.50 U/mg protein. Forglucoamylase production within 4000 ml fermentation scale, the maximum enzyme specific activity, 2.58 U/mg protein, was obtained at day-S of fermentation with 300 rpm agitation, while the maximum activity of 3.47 U/mg protein and 4.71 Ulmg protein were achieved at day-6 and day-5 of fermentation process with 500 rpm and 700 rpm agitation, respectively. At this maximum condition, the use of sago starch reached 94 - 98 %, and biomass production at the end of fermentation process was 4.80 - 7.90 g [dry weight)/L medium.

Page 6 of 29 | Total Record : 283

4 5 6 7 8

Filter by Year

1991 2022

Filter By Issues

All Issue Vol 24, No 1 (2022): Jurnal Kimia Terapan Indonesia Vol 23, No 2 (2021): Jurnal Kimia Terapan Indonesia Vol 23, No 1 (2021) Vol 22, No 1 (2020) Vol 21, No 2 (2020) Vol 21, No 1 (2019) Vol 20, No 2 (2018) Vol 20, No 1 (2018) Vol 19, No 2 (2017) Vol 19, No 1 (2017) Vol 18, No 02 (2016) Vol 18, No 01 (2016) Vol 17, No 2 (2015) Vol 17, No 1 (2015) Vol 16, No 2 (2014) Vol 16, No 1 (2014) Vol 15, No 2 (2013) Vol 15, No 1 (2013) Vol 14, No 2 (2012) Vol 14, No 1 (2012) Vol 13, No 2 (2011) Vol 13, No 1 (2011) Vol 12, No 2 (2010) Vol 12, No 1 (2010) Vol 11, No 2 (2009) Vol 11, No 1 (2009) Vol 10, No 1-2 (2000) Vol 9, No 1-2 (1999) Vol 8, No 1-2 (1998) Vol 7, No 1-2 (1997) Vol 6, No 1-2 (1996) Vol 5, No 1 (1995) Vol 4, No 2 (1994) Vol 4, No 1 (1994) Vol 3, No 2 (1993) Vol 3, No 1 (1993) Vol 2, No 1-2 (1992) Vol 1, No 2 (1991) Vol 1, No 1 (1991) More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota adm. jakarta selatan,

Dki jakarta

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official -

Editorial Address -

Location Kota adm. jakarta selatan, Dki jakarta INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota adm. jakarta selatan,

Dki jakarta

INDONESIA