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Molekul: Jurnal Ilmiah Kimia

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Published by Universitas Jenderal Soedirman

ISSN : 19079761 EISSN : 25030310 DOI : -

Core Subject : Science, Engineering,

Chemical Engineering, Chemistry & Bioengineering Chemistry

MOLEKUL is a peer-reviewed journal of chemistry published by the Department of Chemistry, Faculty of Mathematics and Natural Sciences, Jenderal Soedirman University, Indonesia. Publishing frequency 2 issues per year, on May and November. This Journal encompasses all branches of chemistry and its sub-disciplines including Pharmaceutical, Biological activities of Synthetic Drugs, Environmental Chemistry, Biochemistry, Polymer Chemistry, Petroleum Chemistry, and Agricultural Chemistry.

Arjuna Subject : -

Articles 8 Documents

Search results for , issue "Vol 3, No 1 (2008)" : 8 Documents clear

Penentuan Jenis dan Konsentrasi Pelarut untuk Isolasi Zat Warna Kulit Buah Manggis (Garcinia mangostana L) Amin Fatoni; Mando Hastuti; Dwi Agustina V; Suwandri Suwandri
Molekul Vol 3, No 1 (2008)
Publisher : Universitas Jenderal Soedirman

Natural pigment recently have interest to explore to reduce synthetic chemical effect for organism and environment. Mangostine (Garcinia mangostana L) is one of tropical fruit that have peel strong pigment, thus potent as new natural pigmen. Solvents including water, ethanol and methanol applied to extract mangostine peel pigment. The best solvent determined by measuring pigment filtrate using spectrophotometer. The highest absorbance data indicated the best solvent, i.e. more extract yielded by this solvent. The optimum concentration of the solvent for best extraction also investigated with the same procedure above, and finally the natural pigment obtained identified using paper chromatography. The best solvent investigated for extraction was ethanol at concentration 70%. The pigment extracted from mangostine peel proposed as pellargonidine 3-glycoside group of anthocyanin

PENGOLAHAN LIMBAH LOGAM BERAT INDUSTRI TEKSTIL MENGGUNAKAN FOTOKATALIS TiO2/ARANG AKTIF Kapti Riyani; Tien Setyaningtyas; Roy Andreas
Molekul Vol 3, No 1 (2008)
Publisher : Universitas Jenderal Soedirman

Study about the use of active charcoal rice straws (AAJP) was done in order to decrease heavy metal ion on textile waste water by using photocatalyst AAJP/TiO2. Rice straws were gained from the Banyumas Regency and samples textile waste water from one of textile industry in Pemalang. This study was begun by the making of active charcoal from the rice straws, and then the modification of photocatalyst AAJP/TiO2 was done with the comparison 1:99, 2:98, 3:97, 4:96, 5:95. The test of heavy metal ion photoreduction was done with some parameters such as weight comparison (1:99, 2:98, 3:97, 4:96, 5:95), pH effect (2, 5, 7, 9, 13) and the effect of ray source (sun light and the UV lamp). Analysis of photocatalyst material used SEM and heavy metal ion concentration used AAS. Results show that optimum photocatalyst activity in weight comparison AAJP300oC / TiO2 (1:99) with decrease concentration was 65.02% for heavy metal ion, mean while AAJP700oC / TiO2 (3:97) with decreased concentration of heavy metal ion is 94.50%. Optimal process for heavy metal ion reduction occur at pH 2 with decreased concentration of heavy metal ion for AAJP300oC / TiO2 (1:99) is 99.87% and for AAJP700oC /TiO2 (3:97) is 100%. The source of UV lamp was good for heavy metal ion photoreduction (AAJP300oC/TiO2(1:99) was 99.87% and AAJP700oC/TiO2 (3:97) was 100%)

ANALISIS KOMPONEN KIMIA EKSTRAK METANOL FRAKSI PETROLEUM ETER DAUN EUPATORIUM ODORATUM DENGAN GC-MS Purwati Purwati; Sabirin Matsjeh
Molekul Vol 3, No 1 (2008)
Publisher : Universitas Jenderal Soedirman

The purpose of this investigation was to analize the organic compounds of Eupatorium odoratum leaf and identification of the compounds using Gas Chromatography Mass Spectrometry (GC-MS). The sample was soaked in metanol. The extract of metanol was partitioned using petroleum ether. The extracts obtained were analyzed and identified by GC-MS. The results showed that in the extract of petroleum ether contained the organic compounds: germacrene, isocaryophyllene, 2,6,6,9-tetramethyl-1,4,8-cycloundecatriene, 1-methyl-5-methylene-8-(1-methylethyl)-1,7-cyclodecadiene, 1,2,4a,5,8,8a-hexahydro-4,7-dimethyl-1-(1-methylethyl) naphthalene, 1,12- dodecanediol, octahydro-1-(2-octyldecyl) pentalene, 3,7,11,15-tetramethyl-2-hexadecen-1-ol, methyl (12-acetyloxy)-9-octadecanoic, bis (2-ethylhexyl) phthalat, farnesol, 4,22-cholestadien-3-one and 1,2,3,5,6,7,8,8a-octahydro-1,4-dimethyl-7-(1-methylethenyl) azulene. In the extract of ethyl acetate contained the organic compounds: methyl heptadecanoic, hexadecanoic acid, methyl 13-octadecenoic, 14,16-octadecadienal and octadecanoic acid.

ADSORPSI CONGO RED PADA HUMIN HASIL ISOLASI DARI TANAH HUTAN DAMAR BATURRADEN PURWOKERTO Roy Andreas; Tien Setyaningtyas
Molekul Vol 3, No 1 (2008)
Publisher : Universitas Jenderal Soedirman

Congo red is one of dyes-stuff in textile industry wastwater. If it is thrown directly without waste management process, the dyes could pollute environtment, especially soil. Humin has OH phenolic and carboxylic functional group which can interacted with congo red. The aim of this study is recognize humin characteristic from the soil of Baturraden resin forest, determine the adsorption capacity and isotherm adsorption pattern of congo red by humin from the soil of Baturraden resin forest. Humin in this study is isolated from the soil of Baturraden resin forest. soil cleared of gravel and dirt, then it extracted by using NaOH of nitrogen atmosphere and purified to applies mixture HCl:HF. Humin that is obtained is used to be interacted with dyes with various contact time, various of pH and concentration of congo red so that the adsorption capacities and isotherm adsorption pattern can be obtained. Result of the study showed that the humin has water content 34.92 %, dust content 8.64 %, total acidity 475 cmol/Kg, carboxylic rate 272.5 cmol/Kg, and OH Phenolic rate 202.5 cmol/Kg. The optimum contact time of congo red adsorption by humin is 40 minutes, with optimum pH is 7, adsorption capacities 57.14 mg/g and isotherm adsorption pattern of congo red by humin is follow the pattern of Langmuir isotherm adsorption.

SINTESIS SENYAWA ETILENDIAMIN KALANON MELALUI REAKSI ADISI GUGUS ETILENDIAMIN TERHADAP IKATAN RANGKAP C7-8 DAN UJI AKTIVITAS ANTILEUKEMIA TERHADAP SEL LEUKEMIA L1210 Mochamad Chasani; Eva Vaulina; Ponco Iswanto; M. Hanafi M. Hanafi
Molekul Vol 3, No 1 (2008)
Publisher : Universitas Jenderal Soedirman

Calanone is a natural compound which could be isolated from tree bark of Calophyllum biflorum Hend and WS ( 0,37 % w/w, crude extract) which have been potency as antileucemia drug (IC50= 59,4 ug/mL). Based on the research, the compound can be used as an anti leukemia drug if it value of IC50 < 10 ug/mL. So the aim of this research are in order to get higher calanone activity by modified of double bond carbon-carbon and to obtained several compounds as well which has a higher activity than calanone of its original compound. Several compounds, several compound can be obtained by modified of doble bond carbon-carbon by ethylendiamine group and antileukemia test of the new compound calanone derivatives towards L1210 leukemia cell. The result of the analysis, using thin layer chromatography with eluent methanol:dichlorometane ( 1:6) , give Rf at 0.51 and initial melting point at range 149oC – 151oC. Infra red spectrophotometry and mass spectrometry were used to identify the synthesized product. The result showed that the mass spectra of ethylendiamine calanone give molecular ion at 449 (M+- H2O, NH3) and ions fragmen at m/e 449; m/e 434; m/e 393; m/e 105, m/e 77. Infra red spectra of its compound showed new peaks at 1620 cm -1 and 1063 cm -1. The activity value toward leukemia cell was IC50= 46,28 µg/mL and its value higther than calanone origin.

PENGARUH MEDIUM PERENDAM TERHADAP SIFAT MEKANIK, MORFOLOGI, DAN KINERJA MEMBRAN NATA DE COCO Senny Widyaningsih; Hartiwi Diastuti
Molekul Vol 3, No 1 (2008)
Publisher : Universitas Jenderal Soedirman

Nata de coco is bacterial cellulose which is produced by Acetobacter xylinum in fermentation process of coconut water. Based on its properties, nata de coco can be used as a membrane. Soaking medium in purification of nata de coco gel can influence structure, morphology, and performance of nata de coco membrane. First medium was NaOCl 0.05% and NaOH 5%, Second medium was ultrasonic. Third medium was NaOH 1% and CH3COOH 1%. Mechanical property were analysized based on its tensile strength. Morphology of membrane was analysized using SEM. Performance of membrane was determined based on its permeability. The result showed that nata de coco membrane which had the best value on mechanical properties, morphology, and performance was membrane in third medium.

PENUMBUHAN DAN KARAKTERISASI LAPISAN TIPIS PbTiO3 YANG DISIAPKAN DENGAN TEKNIK SPIN COATING Bilalodin Bilalodin
Molekul Vol 3, No 1 (2008)
Publisher : Universitas Jenderal Soedirman

The growth of PbTiO3 ferroelectric thin films have successfully done. Thin films were made from bulk (powder) PbTiO3 dissolved in methanol solution. The condensation was mixed during 1 hour to get homogeneous condensation. Thin films were grown above corning substrates by spin coating method. Optimation was done by various of annealing temperature. The physical properties of thin films were characterized by Energi Dispersive X-Ray Spectroscopy (EDS), X-Ray Diffraction (XRD), Scanning and Electron Microscopy (SEM). EDS measurement showed that the stoichiometry composition ratio of Pb/Ti is 1/1.26 at annealing temperature 600oC and 1/1.29 at annealing temperature 700oC. The result of XRD pattern showed that crystal structure of PbTiO3 thin films are tetragonal. The calculated lattice parameters ontained from Chohen Method are a=b= 3.873 Å dan c= 4.130Å. The result of SEM PbTiO3 thin film showed that thin film has globular grain size.

STUDI DEGRADASI ZAT PEWARNA AZO, METIL ORANYE MENGGUNAKAN FERRAT (FeO42-) Dian Windy Dwiasi; Mardiyah Kurniasih
Molekul Vol 3, No 1 (2008)
Publisher : Universitas Jenderal Soedirman

Synthesis of ferrate and its application to azo dyes degradation have been investigated. The synthesis was carried out by reacting Fe(NO3)3 solution with NaOCl in alkaline condition. Oxidation reaction of azo dyes was carried out by adjusting the molar ratio of ferrate to azo dyes. When ferrate reacted with azo dyes, its absorbance was monitored using UV-Vis spectrophotometer at pH condition that had been optimized. Kinetics study for azo dyes degradation was carried out at the absorbance maximum of azo dyes, as a function of time. Ferrate can oxidize azo dyes, methyl oranye effectively in optimum pH of 9.6. With the molar ratio of ferrate/azo dyes 5/1, it showed that the percentages of methyl oranye degradation reached 100%. The azo dyes degradation followed first order of kinetics. Analysis using UV-Vis spectrofotometry suggests that the products of azo dyes degradation are nitrate, ammonia, and benzene. This results showed that ferrate is an alternative and green oxidizing agent which can be used for azo dyes degradation.

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Amin Fatoni

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Journal Mail Official
j.molekul@gmail.com

Editorial Address
Jl. Dr. Soeparno No.61 Karangwangkal, Purwokerto, Jawa Tengah 53

Location
Kab. banyumas,

Jawa tengah

INDONESIA

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Amin Fatoni

Contact Email aminfatoni@unsoed.ac.id

Phone -

Journal Mail Official j.molekul@gmail.com

Editorial Address Jl. Dr. Soeparno No.61 Karangwangkal, Purwokerto, Jawa Tengah 53

Location Kab. banyumas, Jawa tengah INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Amin Fatoni

Contact Email
aminfatoni@unsoed.ac.id

Phone
-

Journal Mail Official
j.molekul@gmail.com

Editorial Address
Jl. Dr. Soeparno No.61 Karangwangkal, Purwokerto, Jawa Tengah 53

Location
Kab. banyumas,

Jawa tengah

INDONESIA