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The Journal of Pure and Applied Chemistry Research

jpacr
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Published by Universitas Brawijaya

ISSN : 23024690 EISSN : 25410733 DOI : http://dx.doi.org/10.21776/ub.jpacr

Core Subject : Health, Science, Engineering,

Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology Medicine & Pharmacology

The Journal of Pure and Applied Chemistry Research focuses in publishing research articles in the field of Chemistry and Applied Chemistry. The target is in exploring, investigating, and developing chemicals sources from local and/or Indonesian to increase the value. Scope of the journal is organic chemistry, analytical chemistry, inorganic chemistry, biochemistry, and physical chemistry. Included the topic also organic chemistry natural product, theoretical and computational chemistry.

Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)

Articles 306 Documents

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Investigation of Production Process and GC-MS Analysis of Chemical Constituents of Three Traditional Medicines Sumbawa Oils Hadi, Surya; Yunita, Yunita; Sutrisna, Ziki; Agustina, Marlina; Fadila Arlina, Baiq; Rizkya Satriani, Andhina; Hizmi, Surayyal
The Journal of Pure and Applied Chemistry Research Vol. 7 No. 2 (2018): Edition May-August 2018ï»¿
Publisher : Chemistry Department, The University of Brawijaya

The aims of this research are to study the production process and the chemical composition of three traditional Sumbawa oils from Benete Village (BT), Batu Dulang Village (BD), and Hutan Sumbawa (HS). A survey was conducted to learn the production process and the chemical composition of the Sumbawa oils was determined by fractionation method using three solvents with different polarity (methanol, dichloromethane (DCM) and n-hexane), followed by GC-MS analysis of each extract. In general, the three Sumbawa Oils were traditionally produced by mixing various species of medical plants into the coconut oil through heating process. Based on GC-MS analysis, the constituents of the Sumbawa oils are mainly fatty acid, fatty acid ester, monoterpene and sesquiterpene. Three major identical compounds were identified in all three products with different percentages of abundance namely Octadecanoic acid/stearic acid, Hexadecanoic acid/palmitic acid, and methyl palmitate. Furthermore, there were other major compounds such as Linoleic acid, Lycopersene, and Dodecanoic acid/lauric acid. The non-natural product compounds found in Sumbawa oil extracts and the biological activities of major compounds are discussed in this article.

Production of Biofuel by Hydrocracking of Cerbera Manghas Oil Using Co-Ni/HZSM-5 Catalyst : Effect of Reaction Temperature Lenny Marlinda; Muhammad Al Muttaqii; Achmad Roesyadi; Danawati Hari Prajitno
The Journal of Pure and Applied Chemistry Research Vol 5, No 3 (2016)
Publisher : Chemistry Department, The University of Brawijaya

This research aims to investigate the effect of various reaction temperatures on the hydrocracking of Cerbera manghas oil to produce biofuel as a paraffin-rich mixture of hydrocarbons with Co-Ni/HZSM-5 catalyst. Co-Ni/HZSM-5 catalyst was prepared by incipient wetness impregnation. The catalyst was characterized by X-ray diffraction (XRD), N2 physisorption according to the Brunauer-Emmet-Teller (BET) method, and atomic absorption spectrometry (AAS). The hydrocracking reaction was carried out in a pressure batch reactor, reaction temperatures of 300-375 oC for 2 hours, reactor pressure of 15 bar after flowing H2 for at least 1 hour, and a catalyst/oil ratio of 1 g/200 ml. The hydrocarbon composition was determined by gas chromatography-mass spectrometry (GC-MS). With the Co(0.88%)-Ni(3.92%)/HZSM-5 catalyst, the highest yield for gasoil was 46.45% at temperature of 350 oC. At this reaction temperature condition, the main abundant hydrocarbon compounds in gasoil-like hydrocarbon were n-paraffin, i.e. pentadecane of 20.06 area% and heptadecane of 14.13 area%. Biofuels produced showed that abundant hydrocarbon compounds were different at different reaction temperatures. Iso-paraffin with low freezing point and good flow property were not found in gasoil-like hydrocarbon. Isomerization depends on reaction condition and type of catalyst.

Antibacterial Activity Test, Evaluation of Pharmacognosy and Phytochemical Screening of Some Extracts of Globe Amaranth (Gomphrena globosa) Kusmiati Kusmiati; Dody Priadi; Romah K.B. Rahayu
The Journal of Pure and Applied Chemistry Research Vol 6, No 1 (2017): Edition of January - April 2017
Publisher : Chemistry Department, The University of Brawijaya

Indonesia is a rich biodiversity country where various medicinal plants are existed. One species of medicinal plants is Globe Amaranth (Gomphrena globosa, Amaranthaceae). This species is native to Central America and has been widely spread to the tropics. To date the species can be easily found at the home gardens as an ornamental plant. Medicinal plants has been used for generations by traditional people. It was empirically proven that medicinal plants have ability to cure certain diseases such as dysentery. All parts of this plant can be used as medicine. However, only the flower of the species was used in this study. Objective of the study was to identify the highest antimicrobial activity of Gomphrene globosa flower extract using ethanol, petroleum ether, ethyl acetate and n-butanol solvents. Gomphrena globosa flower was extracted using 96% ethanol and then was by partitied using petroleum ether, ethyl acetate and n-buthanol respectively. The extracts were then evaporated using a rotapavor until condensed extract was obtained. Phytochemical screening was done on both of the flower powder and extract. Result of Pharmacognosy evaluation of the Globe Amaranth flower as follows: water content 8.17%, total ash content 9.11%, acid-insoluble ash 1.50%, acid-soluble ash 6.43%, water-soluble extract 10.79%, ethanol-soluble extract 3.51% and dry content 10.19%. The condensed extracts were tested for antimicrobial activity against Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Shigella dysenteriae. Result of antibacterial activity test by agar diffusion method showed that the higner concentration of the extract led to higher bacterial inhibition zone. The highest antimicrobial activity was obtained from n-butanol extract as indicated by a significant inhibition zone around paper disk

Co-Ni/HZSM-5 Catalyst for Hydrocracking of Sunan Candlenut Oil (Reutealis trisperma (Blanco) Airy Shaw) for Production of Biofuel Muhammad Al Muttaqii; Lenny Marlinda; Achmad Roesyadi; Danawati Hari Prajitno
The Journal of Pure and Applied Chemistry Research Vol 6, No 2 (2017): Edition of May-August 2017
Publisher : Chemistry Department, The University of Brawijaya

The production of biofuel by hydrocracking of Sunan candlenut oil as renewable energy can substitute fossil energy. The purpose of this work is to produce biofuel by hydrocracking of Sunan candlenut oil with Co-Ni/HZSM-5 catalyst. The catalyst was prepared by incipient wetness impregnation method. The characterization of catalyst was determined by X-Ray Diffraction (XRD) and nitrogen adsorption-desorption isotherms. The functional groups of the hydrocarbon was determined by Fourier Transform Infrared (FT-IR). The hydrocarbon composition was determined by Gas Chromatography Mass Spectrometry (GC-MS). The results showed that biofuel composition consist of 0.14 area% isoparaffins, 12.29 area% cycloparaffins, 6.87 area% normal paraffins, 4.18 area% olefin, and 10.52 area% aromatics, and oxygenated compounds including 35.03 area% carboxylic acids. It was necessary to be done that the oxygenated compounds in biofuel were eliminated to produce the abundant paraffin hydrocarbons at reaction temperature above 350 oC.

Chemical Composition of Vermicompost Made from Organic Wastes through the Vermicomposting and Composting with the Addition of Fish Meal and Egg Shells Flour N Nurhidayati; Usman Ali; Indiyah Murwani
The Journal of Pure and Applied Chemistry Research Vol 6, No 2 (2017): Edition of May-August 2017
Publisher : Chemistry Department, The University of Brawijaya

Chemical composition of compost is an important indicator that determines the quality of compost. This study compared the chemical composition of vermicompost resulting from the process of vermicomposting alone with combined vermicomposting and composting with addition of egg shells flour and fish meal. Organic wastes used were the mixture of spent mushrooms waste, coconut husks, cow dung, vegetables residue, and leaf litter. Lumbricus rubellus was the species of earthworm used in the vermicomposting process. In the composting process, egg shells flour and fish meal are added into the vermicompost as additives materials. The results indicate that the combined vermicomposting and composting process with addition the additives materials improves the chemical composition of vermicompost compared to using vermicomposting process alone. The change of chemical composition was indicated by a decrease in C-organic content and C/N ratio by 29% and 99%, respectively, while the content of N, P, K and S increased by 52%, 67.5%, 29% and 25%, respectively due to the addition of additives material in the composting process. The largest increase of vermicompost nutrient content occurred in the Ca content by an average of up to 7-fold. While polyphenols, lignin and cellulose content of vermicompost decreased slightly. The treatment of two mixture (a) spent mushrooms waste, cow dung and vegetables residue, and (b) spent mushroom waste, cow dung, vegetables residue, and leaf litter gave the best chemical composition. However, to determine the quality, we need to test the product in a plant growth bioassay as a follow-up study.

Studies of In Vitro and In Silico of Immobilized Xylanase on Zeolite Matrix Activated with Hydrochloric Acid Janatun Na’imah; Sasangka Prasetyawan; Arie Srihardyastutie
The Journal of Pure and Applied Chemistry Research Vol 6, No 3 (2017): Edition of September - December 2017
Publisher : Chemistry Department, The University of Brawijaya

Xylanase is a hydrolase enzyme that can hydrolyze hemicellulose into xilo-oligosaccharide and xylose. This research is aimed to investigate the in vitro and in silico xylanase (isolated from the fungus Trichoderma viride) immobilized on the zeolite matrix activated with HCl 0.4 M solution. The study was performed using in silico docking molecular methods to investigate the interaction between the xylanase primarily to its ligand. Xylanase activity was determined by reducing sugar produced (xylose) by 1 mL of enzyme per minute. The optimum conditions of immobilized xylanase were measured according to the time agitation and concentration of xylanase. The time variation agitation used were 1, 2, 3, 4, and 5 hours, while variations in the concentrations of a xylanase used were 11.500, 15.653, 20.444, 25.875, and 31.944 mg/mL. The optimum conditions of immobilized xylanase was obtained in the shaking time for 3 hours at a concentration of xylanase 15.653 mg/mL and immobilized xylanase activity generated at 46.755 μg.g-1.min-1. Immobilized xylanase activity was greater than the purified xylanase (15.976 μg.mL-1.min-1). These results were due to the cofactors Al (AlO4) and Si (SiO4) of zeolite was able to increase the kinetic energy caused the reaction rate between xylanase with the larger substrates. Cofactor also increased the kinetic energy and can enhance the rate of reaction between a xylanase with its substrate, in order to give greater activity. Immobilized xylanase was stable and its reusability as much as 6 times which afforded the activity 21.331 μg.g-1.min-1 and the efficiency of 56.77%.

Synthesis and Characterization of PVDF-LiBOB Electrolyte Membrane with ZrO2 as Additives Etty Wigayati; Rosyid Ridlo; Achmad Subhan; Ibrahim Purawiardi
The Journal of Pure and Applied Chemistry Research Vol 6, No 3 (2017): Edition of September - December 2017
Publisher : Chemistry Department, The University of Brawijaya

The electrolyte membrane serves as ions medium transport and as a separator between the anode and cathode in lithium ion battery. The polymer used for the electrolyte membrane must have sufficiently high mechanical strength to withstand the pressure between the anode and cathode, a thin size and has a chemical and thermal stability.Polymer electrolyte membrane of Lithium bisoxalate Borate(LiBOB) salt with PVdF as matrix polymer and the additive is ZrO2 has been fabricated. The method used is a doctor blade. The concentration of the additive is varied. The membranes were characterized using FT-IR, XRD, SEM and EIS. XRD analysis showed that the crystallinity index increases with the addition of ZrO2. The presence of functional groups bewteen Lithium salts and polymer interaction shown by FTIR analysis. The morphology of the membrane surface was shown by SEM analysis. SEM image and mapping show the morphology of the membrane have typical porous layer. The electrical conductivity increases with additions of ZrO2.

NPK Fertilizer With Slow Release Fly Ash Nadhira Izzatur Silmi; Fidela Azaria Antasari; Della Afriyana; Ridha Dini Rahmawati; Ilham Sidik; Sri Wardhani
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Fly ash is the solid of the remaining coal combustion carried along with the exhaust gas and captured by the air controller. Fluids in fly ash are Al2O3, SiO2, Fe2O3, CaO, MgO, Na2, and SO3 which are similar to zeolites. So that fly ash can be used as a substitute for zeolite for various carrier of fertilizer. The result of slow release test is known that N element has higher release level. The NPK fertilizer activity test of Fly Ash Slow Release was done on chilli plant with parameter of variation of fertilizer composition and plant height. Based on research result, fly ash-TSP 2: 1 fertilizer has the best result.

The Effect of Bacterioruberin Deletion on Production of Bacteriorhodopsin in Halobacterium salinarum R1 Abbas Karimi Fard; Ali Asghar Deldar; Saeed Sedaghat
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Bacteriorhodopsin is a retinal protein located in purple membrane of Halobacterium salinarum which acts as light-dependent proton pump. Bacterioruberin is a by-product in bacteriorhodopsin biosynthesis pathway in Halobacterium salinarum. In order to study the effects of bacterioruberin deletion on quantity of active cellular bacteriorhodopsin production, random mutation by UV radiation on Halobacterium salinarum R1 has been carried out. Afterwards, mutated strains which lacked bacterioruberin were selected and production of cellular active bacteriorhodopsin in both mutated and normal (with bacterioruberin) strains were evaluated. The results of this study indicated that the bacterioruberin deletion had insignificant effects on bacteriorhodopsin production. Hence, the biosynthesis pathway of bacteriorhodopsin basically has to be considered independently from the bacterioruberin synthesis.

Thermal Activated of Indonesian Bentonite as A Low-Cost Adsorbent for Procion Red Removal from Aqueous Solution Tarmizi Taher; Dedi Rohendi; Risfidian Mohadi; Aldes Lesbani
The Journal of Pure and Applied Chemistry Research Vol 7, No 2 (2018): Edition May-August 2018
Publisher : Chemistry Department, The University of Brawijaya

Abundant and inexpensive Indonesian natural bentonite was activated by thermal activation at 500 oC for removal of procion red dye as one of the most used synthetic dye in the traditional songket fabric production around Palembang city. Activated bentonite product was characterized by FT-IR, XRD, and thermal analysis. The adsorption process was conducted in batch adsorption system by applying various adsorption parameter condition including, initial pH condition, contact time, and initial dye concentration. The activated bentonite characterization indicates that during the activation process, the structure of the original bentonite was not changed significantly and the result of the thermal analysis revealed that thermal activation at 500 oC was draining the water content without destructing the silica-alumina framework of bentonite. The adsorption kinetics study shows that the procion red adsorption into the activated bentonite follows the pseudo-second order kinetic model. The isotherm adsorption study revealed that procion red adsorption into activated bentonite adapted the Langmuir adsorption isotherm.

Page 14 of 31 | Total Record : 306

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Editorial Address Departemen Kimia, Fakultas MIPA, Universitas Brawijaya, Jl. Veteran 65145 Malang

Location Kota malang, Jawa timur INDONESIA

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Contact Name
Masruri

Contact Email
masruri@ub.ac.id

Phone
+62341-575838

Journal Mail Official
jpacr@ub.ac.id

Editorial Address
Departemen Kimia, Fakultas MIPA, Universitas Brawijaya, Jl. Veteran 65145 Malang

Location
Kota malang,

Jawa timur

INDONESIA