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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.

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Articles 331 Documents

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Separation Of Radioisotope 113mIn Using Column Chromatography Based on Silica Gel Matrix Duyeh Setiawan; M Basit Febrian; Yanuar Setiadi
Molekul Vol 13, No 2 (2018)
Publisher : Universitas Jenderal Soedirman

Radioisotope indium-113m (113mIn) with half-life, T1/2 = 1.7 hours and gamma energy, Eg = 391 keV is suitable and meets the criteria as radiotracer in industry. 113mIn radioisotope was obtained from tin-113 decay (113Sn, T1 / 2 = 115 days) of 112Sn (n,g) 113Sn neutron activation in nuclear reactor. The process of separation of radioisotope 113mIn using column chromatography method based on silica gel matrix using 0.05 M HCI solution. Radionuclide and radiochemical purity tests were performed using the gamma-spectrometry method and paper chromatography. The final product specification in the form of 113mInCl3 is clear solution, pH 2, obtained yield of 81.83%, radionuclide purity of 90.22%, radiochemical purity of 91.61 ± 0,29% and stable for 3 days at room temperature.

PENGARUH SIANIDA PADA FOTOREDUKSI Hg(II) YANG DIKATALISIS TiO2 Diky Hidayat
Molekul Vol 6, No 1 (2011)
Publisher : Universitas Jenderal Soedirman

Influence of cyanide on the photoreduction of Hg(II) catalyzed by TiO2 had been studied. Photoreduction process was carried out in a closed reactor equipped with UV lamp The process was done by radiated and stirred a mixture of Hg(II) solution, TiO2, and cyanide for a certain period of time. The amount of reduced Hg(II) by photoreduction was calculated by the substracting initial Hg(II) concentration with unreduced one, which was determined by usedcold vapor atomic absorption spectrophotometer method. In this research influences of solution concentration and pH solution in the presence cyanide were also evaluated.The result of this research indicated that the presence of cyanide lead to decrease Hg(II) photoreduction, and a drastical drop was observed when more than 2 mmole cyanide was added for each mmole of Hg(II). Increased pH solution from 2 to 4 in the presence of cyanide can improve photoreduction process, but further increased of pH solution higher than 4 lead to decrease photoreduction of Hg(II).

KAJIAN FOTODEGRADASI METHYL ORANGE DENGAN MENGGUNAKAN KOMPOSIT TiO2-MONTMORILLONIT Afid Aryanto; Irwan Nugraha
Molekul Vol 10, No 1 (2015)
Publisher : Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jm.2015.10.1.174

Komposit TiO2-Montmorillonit (Ti-MMT) telah disintesis dengan tujuan untuk meningkatkan kemampuan fotokatalis TiO2 mendegradasi methyl orange. Sintesis komposit dilakukan dengan mencampurkan TiO2 dan montmorillonit pada larutan etanol, kemudian dipanaskan dengan menggunakan furnace pada temperatur 450 oC selama 5 jam. Komposit TiO2-MMT dikarakterisasi dengan FT-IR, XRD dan SAA. Uji aktivitas fotodegradasi komposit TiO2-MMT dilakukan terhadap zat warna methyl orange 8 mg/L dengan variasi waktu penyinaran sinar UV dan massa komposit TiO2-MMT. Fotodegradasi dengan sinar UV dilakukan dalam reaktor UV black light 365 nm 10 watt 220 volt. Hasil fotodegradasi menunjukkan kemampuan aktivitas komposit TiO2-MMT secara optimal terjadi pada waktu penyinaran UV selama 330 menit dengan methyl orange yang terdegradasi sebanyak 81,4 % dan reaksi fotodegradasi tanpa sinar UV dihasilkan methyl orange yang terdegradasi sebanyak 33,25 %. Massa optimum komposit Ti-MMT yang digunakan untuk mendegradasi methyl orange adalah sebesar 200 mg; dengan methyl orange yang terdegradasi sebanyak 89,3 % untuk fotodegradasi yang menggunakan sinar UV dan 87,3 % untuk fotodegradasi yang tidak menggunakan sinar UV.

Expression of Recombinant Antibody Fragment, Anti BNP-SCFV on the Periplasm of Escherichia Coli for the Detection of Heart Failure Shabarni Gaffar; Sofyan Multazam N Aji; Yeni W Hartati; Safri Ishmayana; Toto Subroto
Molekul Vol 12, No 1 (2017)
Publisher : Universitas Jenderal Soedirman

Basic natriuretic peptide (BNP) is a polypeptide hormone consist of 32 amino acids that secreted by the heart ventricle to respond the excessive stretching of heart muscle cells. BNP can be used as prognostic marker for patients with heart failure. The presence of BNP in blood can be detected by BNP antibody, which is anti BNP-single chain variable fragment (Anti BNP-SCFV). The antibody is a combination of polypeptides between varying region on the heavy chain (VH) and the light chain (VL) of immunoglobulin. Anti BNP-SCFV will bind to BNP through the antigen-antibody interaction. Concentration of BNP in a patientâs blood can be detected through the interaction of BNP with Anti BNP-SCFV using immunosensor method. Production of recombinant Anti BNP-SCFV in Escherichia coli as host is reported in the present study. Anti BNP-SCFV was expressed in fusion form with OmpC signal peptide that direct the protein to a periplasmic space. Expression was performed under RhaBad promoter as control using L-rhamnose as inducer. SDS-PAGE characterization showed consistent band at 28 kDa, which was assumed as Anti BNP-SCFV. The optimum expression was found at four hours after induction with 4 mM inducer. Anti BNP-SCFV was secreted from the cell as characterized by the presence of the protein on periplasmic membrane and extracellular fraction.

AKTIVITAS ANTIKANKER EKSTRAK ETANOL DAUN Rhizopora mucronata TERHADAP LARVA UDANG Artemia salina Leach DAN SEL RAJI Hartiwi Diastuti; Warsinah Warsinah; Purwati Purwati
Molekul Vol 4, No 1 (2009)
Publisher : Universitas Jenderal Soedirman

The mangrove plant have been long used the people for traditional medicine to cure various diseases, one of them to cancer therapy. Investigation the anticancer potent of R. mucronata has not been carried yet. This research was aimed to toxicity test of R. mucronta leaf extracts againts Artemia salina Leach, then cytotoxicity test of R. mucronata leave extracts againts Raji cancer cells. The extraction of R. mucronata leaf was peformed by maseration with ethanol. The ethanol extracts was partitioned with chloroform, ethylacetate and methanol. The ethanol extracts of R. mucronata leaf respectively was examined their toxicity againts A. salina Leach larv. The toxic exctracts was examined their citotoxicity againts Raji cells. The ethanol extract of R. mucronata leaf has toxic character because has LC50 < 1000 mg/mL. Toxicity test againts A. salina and citotoxicity test againts Raji cells showed that the chloroform fraction of ethanol extract of R. mucronata leaf have highest activity, respectively IC50 value equal to 290,92 mg/mL and 105,56 mg/mL. Phytochemical study showed that the active fractions contained flavonoid, terpenoid and alkaloid.

SINTESIS DAN KARAKTERISASI SENYAWA OKSOTRINUKLIR [Cr3O(OOCC6H5)6(H2O)3](NO3)×nH2O Aldes Lesbani; Risfidian Mohadi
Molekul Vol 8, No 2 (2013)
Publisher : Universitas Jenderal Soedirman

Senyawa oksotrinuklir telah disintesis menggunakan kromium nitrat dan asam benzoat dalam etanol pada temperatur 80 oC selama 1 jam.Kristal senyawa oksotrinuklir hasil sintesis dikarakterisasi menggunakan spektrofotometer FTIR, 1H NMR padat, X-Ray Difraktometer, TGA, dan MS dengan teknik ionisasi dingin. Hasil penelitian menunjukkan bahwa senyawa oksotrinuklir mempunyai vibrasi yang khas pada bilangan gelombang 671 cm-1(ν Cr3-O). Identifikasi dengan spektrometer massa dalam asetonitril sebagai pelarut menunjukkan fragmentasi pada m/z: 1021.83 [Cr3O(OOCC6H5)6(MeCN)3]+, 998,80 [Cr3O(OOCC6H5)6(MeCN)2(H2O)]+, 980,79 [Cr3O(OOCC6H5)6(MeCN)2]+, 939,73 [Cr3O(OOCC6H5)6(MeCN)]+. Puncak yang lebar dan besar pada spektrum 1H NMR menunjukkan bahwa kromium yang bersifat paramagnetic di dalam senyawa. Pola XRD menunjukkan bahwa senyawa oksotrinuklir adalah kristalin dan hasil termogravimetri menunjukkan senyawa oksotrinuklir stabil sampai suhu 174 oC dan mempunyai 5 mol air kristal. Dari hasil karakterisasi FTIR,1H NMR, XRD, TGA, dan MS dapat disimpulkan bahwa senyawa yang terbentuk adalah [Cr3O(OOCC6H5)6(H2O)3](NO3)×5H2O.

Identification of Differentially Expressed Protein from Electrical Stunning of Broiler Chickens Meat Protein Sandra Hermanto; Maya Ina Sholaikah; Sri Suci Mulyani
Molekul Vol 11, No 1 (2016)
Publisher : Universitas Jenderal Soedirman

Identification of differentially expressed protein from the muscle tissue of broiler chicken meat with different conditions of pre-slaughter has been done. Each sample (6 broilers aged 21 days, 1 kg of weight ) was prepared through the process of pre-slaughter with 3 conditions, the first sample slaughtered in a conventional way which untreated electrical stunning, while the second and third sample of the chicken was prepared by using electrical stunning with 1 A and 25 Volts for 5 seconds and 1 A, 125 Volts for 30 seconds. Two biological replicate were done for each of samples. Muscle tissue protein extracted in Tris HCl pH 8.0 and the proteins separation by using SDS-PAGE (Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis). Identification of differentially expressed protein performed by densitometry to identify the profile of the resulting proteins. The results of this study showed that the protein bands constructed in the range of 8.5-140 kDa and 9 dominant protein bands with different relative intensities. Densitogram analysis results showed there are two specific protein bands appear on the results of the electrical stunning which more extensive over expression. This indicates the electrical stunning of slaughter process may triggered the expression levels of certain proteins that do not occur in the nonelectrical stunning.

PENENTUAN WAKTU KONTAK DAN pH OPTIMUM PENYERAPAN METILEN BIRU MENGGUNAKAN ABU SEKAM PADI Anung Riapanitra; Tien Setyaningtyas; Kapti Riyani
Molekul Vol 1, No 1 (2006)
Publisher : Universitas Jenderal Soedirman

Dyes are widely used for colouring in textile industries, significant losses occur during the manufacture and processing of the product, and these lost chemical are discharged in surrounding effluent. Adsorption of dyes is an effective technology for treatment of wastewater contaminated by the mismanaged of different types of dyes. In this research, we investigated the potential of rice husk ash for removal of methylene blue dyeing agent in aqueous system. The aim of this research is to find out the optimum contact time and pH on the adsorption of methylene blue using rice husk ash. Batch kinetics studies were carried out under varying experimental condition of contact time and pH. An adsorption equilibrium condition was reached within 10 minutes and the optimum condition for adsorption was at pH 3. The adsorption of methylene blue was decreasing with decreasing the solution pH value.

KARAKTERISASI SENYAWA POLIOKSOMETALAT TIPE KEGGIN TERSUBSTITUSI VANADIUM MENGGUNAKAN FT-IR DAN 51V NMR Aldes Lesbani
Molekul Vol 7, No 1 (2012)
Publisher : Universitas Jenderal Soedirman

Sintesis dan karakterisasi senyawa polioksometalat tipe Keggin yakni Rb2K2[γ-SiV2W10O38(OH)2]•nH2O dan H4[γ-SiV2W10O38(OH)2]•nH2O telah dilakukan menggunakan FT-IR dan spektroskopi 51V NMR. Senyawa polioksometalat Rb2K2[γ-SiV2W10O38(OH)2]•nH2O ditransformasi menjadi H4[γ-SiV2W10O38(OH)2]•nH2O melalui metode pertukaran ion menggunakan asam klorida. Spektrum 51V NMR dari Rb2K2[γ-SiV2W10O38(OH)2]•nH2O menunjukkan pergeseran kimia pada -586.94 ppm. Vibrasi utama yang menunjukkan gugus fungsional senyawa Rb2K2[γ-SiV2W10O38(OH)2]•nH2O muncul pada bilangan gelombang 1041 cm-1, 972 cm-1 (n W=O), 914 cm-1 (n Si-O), 870 cm-1 (nW-Oe-W), 781 cm-1 (n W-Oc-W), 565 cm-1 dan 534 cm-1. Pergeseran kimia 51V NMR dari senyawa polioksometalat H4[γ-SiV2W10O38(OH)2]•nH2O memberikan satu puncak pada -586.77 ppm. Pergeseran kimia antara senyawa Rb2K2[γ-SiV2W10O38(OH)2]•nH2O dan H4[γ-SiV2W10O38(OH)2]•nH2O tidak berubah yang disebabkan oleh kemiripan struktur utama di antara dua senyawa polioksometalat tersebut. Vibrasi utama dari senyawa polioksometalat H4[γ-SiV2W10O38(OH)2]•nH2O juga mempunyai kemiripan dengan senyawa polioksometalat Rb2K2[γ-SiV2W10O38(OH)2]•nH2O yang disebabkan hanya kation yang berubah menjadi asam.

Biochemical Properties of Mercuric Reductase from Local Isolate of Bacillus sp for Bioremediation Agent Purkan Purkan; Yuliana Firdausi Nuzulla; Sofijan Hadi; Endang Triwahyu Prasetyawati
Molekul Vol 12, No 2 (2017)
Publisher : Universitas Jenderal Soedirman

Mercuric reductase is the important enzyme which catalyzes a reduction of a toxic Hg2+ to non-toxic Hg0. The enzyme which has been potentially used as mercury bioremediation agent is produced by mercury resistant bacteria. These research aims are to determinate the resistance level of a local Bacillus sp to HgCl2 in media, to determine the mercuric reductase activity from the bacteria, and to determine the biochemical properties of the mercuric reductase. The Bacillus sp was grown in the Nutrient Broth media with various of 0; 20; 40; 60; 120; and 160 µM HgCl2 to know the response of the bacteria against mercury, The cell growth of Bacillus sp was measured by optical density (OD) method of at λ 600 nm. The mercuric reductase activity was assayed in the solution of MRA (Mercury Reductase Assay), then the oxidized NADPH was observed by the spectrophotometry method at λ340 nm. The result showed that the Bacillus sp has been resistant to media containing mercury at 120 µM, but the microbial growth was decreased by 50% in media containing mercury 80 µM. The Bacillus sp could produce highly the mercuric reductase enzyme at 16 hours of growth time with enzyme activity as 0.574 Unit/µg. The mercuric reductase from the bacteria has an optimum activity at pH 6 and temperature 37 °C

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Contact Name
Amin Fatoni

Contact Email
aminfatoni@unsoed.ac.id

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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