The Journal of Pure and Applied Chemistry Research
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.
Articles
306 Documents
<![CDATA[Modification of Screen Printed Carbon Electrode (SPCE) with Polypyrrole (Ppy)-SiO2 for Phenol Determination ]]>
<![CDATA[Erasti Pratiwi]]>;
<![CDATA[Ani Mulyasuryani]]>;
<![CDATA[Akhmad Sabarudin]]>
<![CDATA[ The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018 ]]>
Publisher : <![CDATA[Chemistry Department, The University of Brawijaya ]]>
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DOI: 10.21776/ub.jpacr.2018.007.01.364
<![CDATA[Electrode modification on screen printed carbon electrode (SPCE) with polypyrrole (Ppy)-SiO2 was done by electropolymerization. Polypyrrole (Ppy)-SiO2 was used for phenol determination. The analysis of this material was done by using Scanning Electron Microscopy (SEM), cyclic voltammetry method and differential pulse voltammetry. In a cyclic voltammetry analysis, we used potential range of -1 to 1 V with Ag/AgCl comparator electrode at scan rate of 100 mV/sec, while in differential pulse voltammetry method the potential range was 0 to 1 V toward Ag/AgCl, the scan rate of 50 mV/sec, the pulse rate is 0,2 V and the pulse width is 50 ms. From the analysis result with SEM, cyclic voltammetry and differential pulse voltammetry method, Polypyrrole (Ppy) -SiO2 is the best material and can be used as phenol measurement.]]>
<![CDATA[Potential of Anthocyanin From Purple Sweet Potato (Ipomoea batatas) To Increase BDNF Level and VEGF Expression in The Cerebellum of Ischemic Stroke Rats ]]>
<![CDATA[Eny Rahma Wati]]>;
<![CDATA[Sasangka Prasetyawan]]>;
<![CDATA[Chanif Mahdi]]>;
<![CDATA[Arie Srihardyastutie]]>;
<![CDATA[Made Oka Adnyana]]>;
<![CDATA[Aulanni’am Aulanni’am]]>
<![CDATA[ The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018 ]]>
Publisher : <![CDATA[Chemistry Department, The University of Brawijaya ]]>
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DOI: 10.21776/ub.jpacr.2018.007.01.363
<![CDATA[This research studies the effect of anthocyanin from purple sweet potato in the cerebellum of stroke ischemic rats by MCAO (Middle Cerebral Artery Occlusion) technique. This technique was carried out by ligating the blood flow in ECA and CCA region for 3 hours, followed by reperfusion. The MCAO technique proved as a technique for preparing ischemic stroke rats. This technique induces releasing of BDNF and VEGF in the cerebellum of ischemic stroke rats. The level of BDNF measured by ELISA technique and VEGF expression used immunohistochemistry technique. The results showed that anthocyanin from purple sweet potato increased the level of both BDNF and VEGF expression in the cerebellum in ischemic stroke rats. It is suggested that anthocyanin could be used as a therapeutic agent for ischemic stroke.]]>
<![CDATA[Study of Antocyanins Activity from Purple Sweet Potato for Reducing Apoptotic Cells Expression of The Cerebellum On Ischemic Stroke Rats ]]>
<![CDATA[Latifah Tribuana Dewi]]>;
<![CDATA[Made Oka Adnyana]]>;
<![CDATA[Chanif Mahdi]]>;
<![CDATA[Sasangka Prasetyawan]]>;
<![CDATA[Arie Srihardyastutie]]>;
<![CDATA[Aulanni’am Aulanni’am]]>
<![CDATA[ The Journal of Pure and Applied Chemistry Research Vol 7, No 2 (2018): Edition May-August 2018 ]]>
Publisher : <![CDATA[Chemistry Department, The University of Brawijaya ]]>
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DOI: 10.21776/ub.jpacr.2018.007.02.348
<![CDATA[This study aims to determine anthocyanin antioxidant performance with a dose of 2 cc/day based on the expression of apoptotic cells on ischemic stroke rats cerebellum. Research was conducted using ischemic stroke rats (Rattus norvegicus) that prepared by ligated for 3 h on the Common Carotid Artery (CCA) and External Carotid Artery (ECA) followed by reperfusion that commonly known as MCAO (Middle Cerebral Artery Occlusion). The anthocyanin extract was characterized by LC-MS and its IC50 was measured by DPPH method. The rats were divided into five groups 1) negative control; 2) reperfusion 1 h; 3) reperfusion 72 h; 4) reperfusion 24 h, with anthocyanin therapy; 5) reperfusion 72 h, with anthocyanin therapy. The results of LC-MS showed that anthocyanin from purple sweet potato extracts contained Petunidin-3,5-O-diglucoside (Pt-DG) with an IC50 value of 22.16 μg/mL, categorized as very strong antioxidant. The results showed that apoptotic cells expression of cerebellum decreased significantly (p<0.01) after 72 h reperfusion with anthocyanins therapy until 2.42%. The current work proved that anthocyanin extract effectively suppresses the apoptotic cell’s expression of the cerebellum on stroke ischemic rats.]]>
<![CDATA[Calcium Oxide Catalyst Based on Quail Eggshell for Biodiesel Synthesis from Waste Palm Oil ]]>
<![CDATA[Risfidian Mohadi]]>;
<![CDATA[Abi Sueb]]>;
<![CDATA[Kiki Anggraini]]>;
<![CDATA[Aldes Lesbani]]>
<![CDATA[ The Journal of Pure and Applied Chemistry Research Vol 7, No 2 (2018): Edition May-August 2018 ]]>
Publisher : <![CDATA[Chemistry Department, The University of Brawijaya ]]>
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DOI: 10.21776/ub.jpacr.2018.007.02.390
<![CDATA[Calcium oxide decomposed from quail eggshell was used as catalyst for biodiesel synthesis from waste palm oil. Prior to being used, the quail eggshell was decomposed at 600-1100 oC to form calcium oxide and it was characterized by X-Ray measurement, FTIR and SEM spectroscopy to analyze the functional groups and the surface morphology, followed by N2 adsorption desorption methods to determine the surface area. The results of X-Ray analysis powder pattern show that the decomposition of quail eggshell at 900 oC gave calcium oxide that has similar characteristic to the standard CaO from Joint Committee of Powder Diffraction Standard (JCPDS). The FTIR spectrum indicated vibration of calcium oxide from quail eggshell have a similar pattern with the calcium oxide of the standard. The SEM analysis showed that morphology of quail eggshell was changed after decomposition at 900 oC and it have the mesoporous structure. The biodiesel from waste palm oil was synthesized using CaO catalyst from quail eggshell decomposed at 900 oC. The biodiesel product has density of 0.86 g/cm3, viscosity of 5.50 mm2/s, free fatty acid of 0.56 mg/KOH, and iodine number of 60.49 g I2/100g, respectively. All those biodiesel characteristics meet to the biodiesel standard by the Indonesian National Standard (SNI).]]>
<![CDATA[Xylanase Production from Trichoderma viride and its Immobilization on the Sea Sands Matrix ]]>
<![CDATA[Sutrisno Sutrisno]]>;
<![CDATA[Anna Roosdiana]]>;
<![CDATA[Suratmo Suratmo]]>
<![CDATA[ The Journal of Pure and Applied Chemistry Research Vol 7, No 2 (2018): Edition May-August 2018 ]]>
Publisher : <![CDATA[Chemistry Department, The University of Brawijaya ]]>
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DOI: 10.21776/ub.jpacr.2018.007.02.408
<![CDATA[The study was aimed to investigate the production and characterization of xylanase from Trichoderma viride by determining the optimum condition of xylanase immobilization using sea sand matrix. The parameters were shaking time variations of 1, 2, 3, 4, and 5 hours and xylanase concentration of 0.5, 1.5, 2.5, 3.5, and 4.5mg/mL. Xylanase was purified by ammonium sulfate using the optimum fraction of 40-80%. The optimum shaking time for immobilization of xylanase was reached in 4 h, and the optimum xylanase concentration was obtained in 4.5 mg/mL, with immobilized xylanase activity of 118.55 µg.g-1.min-1 and adsorbed xylanase amount in sea sand matrix of 20.51 mg. Immobilized xylanase can be used up to 4 times, with the percentage of 62.47%. The surface characterization of immobilized xylanase was conducted using SEM.The FT-IR result obtained peaks at wavenumber 3431.13 and 875.62 cm-1 which indicatedthe existence of N-H bond from enzyme and the sea sand bind with enzyme, respectively. ]]>
<![CDATA[Study on Physico-Chemical Parameters of Wastewater Effluents from Cotton Development Plant of Maroua-Cameroon ]]>
<![CDATA[Abba Paltahe]]>;
<![CDATA[Tsamo Cornelius]]>;
<![CDATA[Abdoul Wahabou]]>
<![CDATA[ The Journal of Pure and Applied Chemistry Research Vol 7, No 3 (2018): Edition September-December 2018 ]]>
Publisher : <![CDATA[Chemistry Department, The University of Brawijaya ]]>
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DOI: 10.21776/ub.jpacr.2018.007.03.366
<![CDATA[The present research work deals with the study of some of the important physico-chemical parameters of wastewater effluents collected from Maroua cotton processing plant named “SODECOTON”. The effluents were studied from the month of June 2016 to August 2017. A preliminary investigation was carried out on the source of water used by the plant and management of its wastewater effluent. All parameter were analyzed as per the standard methods. Water quality parameters such as temperature, pH, Electrical Conductivity, Total Dissolved Solid, Total Suspended Solid, Biological Oxygen Demand, Chemical Oxygen Demand, Total Nitrogen Kjeldahl, Nitrate and Phosphate were analysed. Results of this study shows that nearly all values of these parameters were above permissible limit. These values are significantly higher during the rainy season (from May –December) than dry season (January-April). Water used by the plant is from bore hole. This water is treated by less adapted technology prior to use and thus probably contribute in the pollution load of the plant’s wastewater effluent. Wastewater from the plant is discharged without being treated and without any quality analysis. This behaviour is due to very relax regulation, absence of monitoring and enforcement by government authorities.]]>
<![CDATA[Effect of Calcination at Synthesis of Mg-Al Hydrotalcite Using co-Precipitation Method ]]>
<![CDATA[Niar Kurnia Julianti]]>;
<![CDATA[Tantri Kusuma Wardani]]>;
<![CDATA[Ignatius Gunardi]]>;
<![CDATA[Achmad Roesyadi]]>
<![CDATA[ The Journal of Pure and Applied Chemistry Research Vol 6, No 1 (2017): Edition of January - April 2017 ]]>
Publisher : <![CDATA[Chemistry Department, The University of Brawijaya ]]>
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DOI: 10.21776/ub.jpacr.2017.006.01.280
<![CDATA[The use of hydrotalcite in catalysis has wide attention in academic research and industrial parties. Based on its utilization, hydrotalcite can be active catalyst or support. This research is focused on the investigation of characteristic like spesific surface area of Mg-Al hydrotalcite which is prepared with different temperature of calcination. Synthesis of Mg-Al hydrotalcites with Mg/Al molar ratio 3:1 were prepared by co-precipitation method. Mg(NO3)3.6H2O and Al(NO3)3.9H2O as precursors of Mg-Al hydrotalcite. Na2CO3 was used as precipitant agent and NaOH was used as buffer solution. The solution was mixed and aging for 5 hours at 650oC. The dried precipitate was calcined at 2500oC, 3500oC, 450oC, 550oC and 650oC. The characterization of functional group was determined by Fourier Transform Infra Red (FT-IR). The Identical peaks diffractogram were analyzed by X-Ray Diffraction (XRD). The spesific surface area was determined by adsorption-desorption of nitrogen. The largest surface area that obtained from the calcination temperature of 650oC is 156.252 m2/g. ]]>
<![CDATA[Chemical Cues in Tritrophic Interaction on Biocontrol of Insect Pest ]]>
<![CDATA[Nurindah Nurindah]]>;
<![CDATA[Surjani Wonorahardjo]]>;
<![CDATA[Dwi Adi Sunarto]]>;
<![CDATA[Sujak Sujak]]>
<![CDATA[ The Journal of Pure and Applied Chemistry Research Vol 6, No 1 (2017): Edition of January - April 2017 ]]>
Publisher : <![CDATA[Chemistry Department, The University of Brawijaya ]]>
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DOI: 10.21776/ub.jpacr.2017.006.01.282
<![CDATA[Tritrophic interaction among host plant-herbivore-parasitoid involves chemical cues. The infested plant by herbivores has been reacted to produce volatiles which is a cue used by the herbivore parasitoids for host location. These volatiles can be developed to enhance natural control of insect pests, especially by optimally use of parasitoids. Egg parasitoids are biocontrol agents that play an important role in natural control of herbivores. This research used a tritrophic interaction model of rice plant-brown plant hopper (BPH)-egg parasitoid of BPH. Research on analysis of chemical cues in tritrophic interactions was aimed to identify volatiles that are used by the parasitoid to find its host. The volatiles that effectively affect the parasitoid orientation behavior could be developed into a parasitoid attractant. Extraction of volatiles as the egg parasitoid cues was done using soxhlet, and identification of the volatiles using Gas Chromatography-Mass Spectrometry (GC-MS). Bioassay of the volatiles on the BPH parasitoid orientation behavior was performed using Y-tube olfactometry. The volatiles that are used for host location cues by the parasitoid affect the parasitoid orientation behavior by showing the preference of the parasitoid females to the odor of volatile. Volatiles extracted from BPH-egg-infested plants and uninfested plants contain alcohol, hydrocarbon, and ester compounds. Based on the difference of the compound composition of both extractions, five compounds of long-chain hydrocarbon, both branched and unsaturated compounds are the main volatile components which caused positive orientation behavior of the egg parasitoid. The egg parasitoids showed positive behavior orientation toward the volatiles extracted from BPH-egg-infested plant. Those hydrocarbon compounds are potential materials to be developed into bio attractants of BPH egg parasitoid.]]>
<![CDATA[Mass Spectrometry Analysis of Chromium-Binding Low-Molecular-Weight Serum Fractions ]]>
<![CDATA[Anna Safitri]]>;
<![CDATA[Aviva Levina]]>;
<![CDATA[Peter A Lay]]>
<![CDATA[ The Journal of Pure and Applied Chemistry Research Vol 6, No 2 (2017): Edition of May-August 2017 ]]>
Publisher : <![CDATA[Chemistry Department, The University of Brawijaya ]]>
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DOI: 10.21776/ub.jpacr.2017.006.02.326
<![CDATA[The current work is focused on the characterization of the chromium(III)-containing low-molecular-weight (LMW) fractions of blood serum by mass spectrometry. The LMW fractions of serum binding-Cr(III) were collected by organic solvent precipitation using acetonitrile. The chromium(III) compounds used were [Cr(pic)3], where pic = 2-pyridinecarboxylato(-) or A, and the Cr(III) propionate complex, [Cr3O(OCOEt)6(OH2)3])+ or B. The new signals appeared in the mass spectra in the presence of added Cr(III) compounds, either A or B. This indicated that common LMW Cr containing serum fractions were formed on addition of Cr(III) to serum. The new signals contained three distinct peaks with a shift of 16, corresponding to ions of m/z +1083, +1099, and +1115 Da, which consisted of 4 Cr atoms with bridging ligands.]]>
<![CDATA[In Vitro and In Silico Study of Immobilized Xylanase from Trichoderma viride using Bentonite Matrices Activated with HCl ]]>
<![CDATA[Nur Lailah]]>;
<![CDATA[Sasangka Prasetyawan]]>;
<![CDATA[Arie Srihardyastutie]]>
<![CDATA[ The Journal of Pure and Applied Chemistry Research Vol 6, No 2 (2017): Edition of May-August 2017 ]]>
Publisher : <![CDATA[Chemistry Department, The University of Brawijaya ]]>
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DOI: 10.21776/ub.jpacr.2017.006.02.330
<![CDATA[The purpose of this study was aimed determine the optimum conditions of agitation time and concentration of immobilized xylanase by in vitro and in silico and efficient reuse of immobilized xylanase. The results of in silico test showed that xylan bounded on the residues of xylanase active site through hydrogen bonding with the amino acid glutamic 177A, glutamate 86A, tyrosine 88A, arginine 122A, and glutamine 136A, whereas bentonite and the residues of xylanase active site form hydrogen bonding with the amino acid glutamine 52, arginine 81, isoleucine 128 and glycine 130. The results of in vitro study showed that the optimum condition of xylanase immobilization was achieved at agitation time of 3 hours with the amount of xylanase adsorbed was 12.593 mg/g bentonites and activity of 50.328 units and the concentration of immobilized xylanase of 4.259 ppm and the amount of xylanase adsorbed of 16.162 mg/g bentonites and activity of 56.362 units. The immobilized xylanase can be used as many as five repetitions with the residual enzyme activity of 60%.]]>
