Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Molekul: Jurnal Ilmiah Kimia

jm
Website

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 15 Documents

1 2

Search results for , issue "Vol 11, No 1 (2016)" : 15 Documents clear

Oxidation Of Cyclohexane To Cyclohexanol And Cyclohexanone Using H4[α-SiW12O40]/Zr As Catalyst Aldes Lesbani; Menik Setyowati; Risfidian Mohadi; Dedi Rohendi
Molekul Vol 11, No 1 (2016)
Publisher : Universitas Jenderal Soedirman

Synthesis and preparation of polyoxometalate H4[α-SiW12O40].nH2O with Zr as support at various weights of Zr 0.01g; 0.05 g; 0.25 g; 0.5 g; 0.75 g; 1 g and 1.25 g to form H4[α- SiW12O40]/Zr was conducted. The compounds from preparation were characterized using FTIR spectroscopy and crystallinity analysis using X-Ray diffraction. Thus H4[α- SiW12O40]/Zr was applied as catalyst for oxidation of cyclohexane to cyclohexanol and cyclohexanone. Oxidation process was studied through reaction time, hydrogen peroxide amount, temperature, and weight of catalyst. FTIR spectrum of H4[α-SiW12O40]/Zr was appeared at wavenumber 771.53-979.84 cm-1 and Zr at 486.06-1481.33 cm-1. Diffraction pattern of H4[α-SiW12O40]/Zr showed that high crystallinity was identified at 2θ 8o-10o and 28.3o. Based on FTIR spectrum and XRD powder pattern, the optimum preparation of H4[α-SiW12O40]/Zr was obtained using 0.5 g of Zr. The catalytic study of cyclohexane using H4[α-SiW12O40]/Zr at 0.5 g of Zr resulted conversion about 99.73%. Catalyst can convert cyclohexane with the highest conversion then used for further deep catalytic investigation. Optimization of oxidation process resulted optimum reaction time at 2 h, 3 mL of hydrogen peroxide amount, 80 oC of temperature, and 0.038 g of catalyst. The GCMS analysis indicated the oxidation of cyclohexane using H4[α-SiW12O40]/Zr at 0.5 g of Zr formed cyclohexanol and cyclohexanone with selectivity 18.77 and 23.57, respectively.

Bacterial Cellulose From Rice Waste Water With Addition Chitosan, Glycerol, And Silver Nanoparticle Eli Rohaeti; Endang WLFX; Anna Rakhmawati
Molekul Vol 11, No 1 (2016)
Publisher : Universitas Jenderal Soedirman

This study aimed to prepare silver nanoparticles chemically, deposite silver nanoparticles on bacterial cellulose-chitosan-glycerol composite based rice waste water, as well as test the antibacterial activity of bacterial cellulose and its composite. Preparation of silver nanoparticles was conducted by chemical reduction of silver nitrate solution, as well as trisodium citrate as the reductor. Bacterial cellulose from rice waste water is fermented by the bacteria Acetobacter xylinum for 7 days. The dried bacterial cellulose was composited with chitosan and glycerol by immersion method on 2% of chitosan solution and 0.5% of glycerol solution. UV-Vis spectroscopy is used to determine the formation of silvernanoparticles and Particle Size Analyzer to test the size and particle size distribution. Characterization was conducted to bacterial cellulose and its composite included functional groups by FTIR, the mechanical properties by Tensile Tester, crystallinity by XRD, surface photograph by SEM, and antibacterial test against S. aureus and E. coli by the shake flask turbidimetry method. Silver nanoparticle characterization indicated that silver nanoparticles are formed at a wavelength of 421.80 nm, yellow, diameter particle size of 61.8 nm. SEM images showed that the surface of bacterial cellulose had deposited silver nanoparticles and antibacterial test showed an inhibitory effect of bacterial cellulose, bacterial cellulose-chitosan composite, and bacterial cellulose-chitosan-glycerol composite which are deposited silver nanoparticles against the growth of S. aureus and E. coli bacteria.

Optimizing Conditions to Cholesterol Adsorbed with Carboxymethyl Chitosan Mardiyah Kurniasih; Dwi Kartika; Riyanti Riyanti
Molekul Vol 11, No 1 (2016)
Publisher : Universitas Jenderal Soedirman

A research on optimizing conditions to cholesterol adsorbed have been performed. Optimization was performed by varying: contact time, adsorbent weight and temperature of the system's. A full factorial experimental design was used in this study. Characterization performed on the synthesized chitosan and carboxymethyl chitosan including FTIR, water content, ash content, solubility, porosity, and swelling effect. The results showed that carboxymethyl chitosan able to adsorb cholesterol under conditions optimal adsorbent with cholesterol ratio (1:200) with a contact time of 90 minutes at temperature of 40 °C. Meanwhile, at a temperature of 55 °C carboxymethyl chitosan capable of adsorb cholesterol under conditions optimal adsorbent with cholesterol ratio (1:300) with a contact time of 30 minutes. Chitosan and carboxymethyl chitosan synthesized has a water content of 7.4 and 10.2%, ash content of 0.14 and 2.29%, solubility in distilled water at 1.10-5and 1.98.10-3%, solubility in acetic acid 0.02 and 0.04%, porosity at 88.3% and 88.8%, and swelling at 163.13 and 182.98%.

Electro-Synthetic Optimization of Host Material Based on MIL-100(Fe) Witri Wahyu Lestari; Joni Hartono; Marisa Adreane; Khoirina Dwi Nugrahaningtyas; Candra Purnawan; Sentot Budi Rahardjo
Molekul Vol 11, No 1 (2016)
Publisher : Universitas Jenderal Soedirman

Electro-synthesis of Metal-Organic Frameworks types of MIL-100(Fe) (MIL = Material Institute of Lavoisier) in ethanol: water (1: 1) with electrolyte TBATFB 0.1 M has been optimized by varying voltage (12, 13, 14 and 15 Volt) and temperature (room temperature, 40, 60 and 80 °C). The product showed light brown powder which upon activation becomes dark brown. Optimum condition achieved during use voltage of 15 Volts and at a temperature of 40 °C with 33% yield. The obtained material was characterized by XRD and compared to CCDC 640536 simulated patterns to confirm the phase purity of the product. As comparison hydrothermal and reflux method have been carried out. Characterization by FTIR has also undertaken to ensure the coordination between the metal cation (Fe3+) and the BTC ligand (BTC = 1,3,5-Benzene Tri Carboxylate). Meanwhile pore analysis using SAA confirmed that MIL-100(Fe) obtained by electrolysis method has a BET surface area reached till 569.191 m²/g with a total pore volume of 0.4540 cc/g and an average pore diameter reached 16 Å. Based on SEM analysis, morphology material show particle size between 0.4-8.6 μm and has a thermal stability up to 350 °C according thermo-gravimetric analysis. Due to the presence of Lewis acid sites on Fe-trimeric unit, porosity features on MIL-100(Fe) and a fairly high thermal stability, this material is potentially used as the host material for the catalyst in the conversion reactions model for green diesel production.

Morphology-Controlled Synthesis Of SrTiO3 Nanocube By Capping Agent-Assisted Solvothermal Method Yulia Eka Putri; Alvionita Alvionita; Rini Rahma Yanti; Diana Vanda Wellia
Molekul Vol 11, No 1 (2016)
Publisher : Universitas Jenderal Soedirman

The synthesis of SrTiO3 nanocubes have been carried out by solvothermal process using cetyl trimethyl ammonium bromide (CTAB) as capping agent to control the particles morphology. The condition of the synthesis was obtained at 160 ºC for 24 hours with molar ratio of SrTiO3 and capping agent was 1 : 1. The X-ray diffraction (XRD) pattern shows that SrTiO3 adopts a perovskite structure with a higher intensity of 110 at 2q:32.33º and the crystallite size calculated from FWHM was found to be 41 nm. Fourier transform infrared (FTIR) spectrum shows a shift in particular absorption band attributed the interaction between SrTiO3 particles surface and the head group of CTAB molecules. Transmission electron microscopy (TEM) image shows the cubic-like particles of SrTiO3, this indicatesthat CTAB successfully functions as capping agent on the synthesis of SrTiO3.

Secondary Metabolite from Endophytic Fungi Aspergillus Sp. The Leave Of Kunyit Putih (Curcuma zedoaria (Berg) Roscoe) Muharni Muharni; Fitrya Fitrya; Widia Purwaningrum; Ahmad Yogi Nugraha
Molekul Vol 11, No 1 (2016)
Publisher : Universitas Jenderal Soedirman

The compound from endophytic fungi of Aspergillus sp. from leaves of kunyit putih (Curcuma zedoaria (Berg.) Roscoe) has been isolated. Isolation begins with cultivation ofAspergillus sp. in 18 L PDB’s media (Potato Dextrose Broth) for 28 days. The liquid cultivation medium was extracted by partitioning method using ethylacetate and then evaporated. The extract was separated and purified by chromatography techniques. Elucidation stucture of the isolated compound was analysis by spectroscopic method NMR 1D and 2D. Antibacterial activity of isolated compound was tested using the disc diffusion method at concentrations 2500, 1000, 500, and 125 ppm. The isolated compounds obtained in the form of a yellow oil (24.30 mg). The 13C NMR spectrum indicated 24 signals of carbon and base on analysis spectrum DEPT 135 showed 5 signal methynes carbon, 1 signals methylene, 9 signals of methyl and 9 signals quarternary carbon. These signals from 1H and 13C-NMR suggested that this compound contained aromatic group and four carbonyl. The isolated compound show antibacterial activity at concentration 2500 ppm which inhibition zone for E. coli, S. dysenteriae, S. aureus, B. subtilis were 10.3 ; 8.3; 8.4; and 7.8 mm, respectively. Based on the analysis result of NMR 1D and 2D, the compound was methyl 6-(5'-(2"-acetoxy-2”-methylpropanoyl)-3"- methyl-2'-(3"'-methylbutanoyl)phenyl)-3-methylbutanoate and has weak antibacterial activity.

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.

Effect Of Non-metal Elements (C, N, S) As Anionic Dopants On Electronic Structure Of Tio2-Anatase By Density-Functional Theory Approach Hari Sutrisno
Molekul Vol 11, No 1 (2016)
Publisher : Universitas Jenderal Soedirman

This article is a theoritical approach to calculate the electronic structure of undoped- and non-metal anions doped-TiO2-anatase. The objective of the research is to calculate abinitio the band structure and the density of states (DOS) of undoped-, C-, N-, and S-doped TiO2-anatase. Kohn-Sham equations are performed with the density functional theory (DFT) using the local density approximation (LDA) for exchange-correlation functional. The first-principle calculations were done using supercell (2x2x1) methods as implemented within Amsterdam Density Functional (ADF)-BAND version 2014.10. The ab-initio calculation of the band structures show that all samples are direct- and indirect-gap type semiconductor. The band gap of TiO2-anatase with DFT using LDA is 2.43 eV. The addition of C atom at 0.943% in 48 atoms produces width intermediate band about 0.76 eV, which is 0.38 eV above the valence band (VB) and 1.38 eV below the conduction band (CB). The addition of N atom at 1.103% and S atom at 2.478% in the lattice structure of TiO2-anatase resulted in the addition of the VB width to 0.47 eV and 0.11 eV, while the resulting gap between the VB and the CB to 1.97 eV and 2.33 eV, respectively.

Extraction of Cellulose from Kepok Banana Peel (Musa parasidiaca L.) for Adsorption Procion Dye Poedji Loekitowati Hariani; Fahma Riyanti; Riski Dita Asmara
Molekul Vol 11, No 1 (2016)
Publisher : Universitas Jenderal Soedirman

The aim of the research was to extract a cellulose from kepok banana peel (Musa parasidiaca L.) and application to removal Procion dye. The extracted cellulose was prepared by dewaxing process to releasing of lignin, bleaching and hemicellulose removal. The cellulose identified by FTIR and SEM-EDS. The efficiency of the cellulose to adsorp Procion dye was evaluated by variation in the initial concentration of dye (5, 10, 15, 20, 25, 30, 35, 40, 45 and 50 mg/L), solution pH (3, 4, 5, 6, 7, 8 and 9), and the contact time (15, 30, 45, 60, 75 and 90 minutes) at room temperature. The result showed that FTIR spectra of cellulose from kepok banana peel were similar with FTIR spectra of standardcellulose. The morphology of cellulose more homogenous than kepok banana peel powder. It was observed that the optimum adsorption of Procion dye by cellulose was on the initial concentration of 30 mg/L, pH solution of 5 and contact time within 30 minutes. The obtained result that cellulose has removal percentage to adsorp Procion dye more higher than kepok banana peel powder. The adsorption equilibrium showed the Langmuir isotherm was described well for adsorption process (R2 = 0.991) than Freundlich isotherm (R2 = 0.922).

Histochemical Changes Liver and Kidney of Mice Exposed to Mercury and Recovery with Nanogold Titik Taufikurohmah; I Gusti Made Sanjaya; Afaf Baktir; Achmad Syahrani
Molekul Vol 11, No 1 (2016)
Publisher : Universitas Jenderal Soedirman

The background of this research is the circulation cosmetic with mercury that occur today in society. The problem of the research is that occur histochemical’s damage liver and kidney after exposure to mercury, and is that nanogold can recovery that damage. The pre-clinical study needed 24 mice (Mus muscullus) were divided into 6 groups, the control is A group, B group was exposed to mercury, Groups C, D, E and F after being exposed to mercury, than recovery by nanogold with concentration each of 5, 10, 15 and 20 ppm. Exposure was performed 1 week and 4 weeks of recovery. Necropsy of mice doing after treatment, liver and kidneys are processed into preparations by blocking with paraffin embedding method. Histochemical staining of liver and kidney tissue with Hematoxylin eosin (HE) to determine changes of cell constituent and staining Van Geyson to determine the structure of collagen constituent. Statistics Manova showed different results between treatment groups. Tissue damage, lysis cell and destruction of collagen can be observed from histochemical techniques for mercury-exposed group compared to the control group. Tissue and collagen recovery process can be observed from group C, D, E and F. The conclusion that the effects of mercury one week exposed through skin give effect to collagen tissue damage at liver and kidneys of mice. 20 ppm of Nanogold can recovery damaged cells and collagen tissue from the liver and kidneys of mice after four weeks of recovery.

Page 1 of 2 | Total Record : 15

1 2

Filter by Year

2016 2016

Filter By Issues

All Issue Vol 16, No 3 (2021) Vol 16, No 2 (2021) Vol 16, No 1 (2021) Vol 15, No 3 (2020) Vol 15, No 2 (2020) Vol 15, No 1 (2020) Vol 14, No 2 (2019) Vol 14, No 1 (2019) Vol 13, No 2 (2018) Vol 13, No 1 (2018) Vol 12, No 2 (2017) Vol 12, No 1 (2017) Vol 11, No 2 (2016) Vol 11, No 1 (2016) Vol 10, No 2 (2015) Vol 10, No 1 (2015) Vol 9, No 2 (2014) Vol 9, No 1 (2014) Vol 8, No 2 (2013) Vol 8, No 1 (2013) Vol 7, No 2 (2012) Vol 7, No 1 (2012) Vol 6, No 2 (2011) Vol 6, No 1 (2011) Vol 5, No 2 (2010) Vol 5, No 1 (2010) Vol 4, No 2 (2009) Vol 4, No 1 (2009) Vol 3, No 2 (2008) Vol 3, No 1 (2008) Vol 2, No 2 (2007) Vol 2, No 1 (2007) Vol 1, No 1 (2006) More Issue

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

Abstract

Abstract

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

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