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The Journal of Pure and Applied Chemistry Research
Published by Universitas Brawijaya
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Articles 10 Documents
Search results for , issue " Vol 7, No 1 (2018): Edition January-April 2018" : 10 Documents clear
Modification of Screen Printed Carbon Electrode (SPCE) with Polypyrrole (Ppy)-SiO2 for Phenol Determination Pratiwi, Erasti; Mulyasuryani, Ani; Sabarudin, Akhmad
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2018.007.01.364

Abstract

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.
Potential of Anthocyanin From Purple Sweet Potato (Ipomoea batatas) To Increase BDNF Level and VEGF Expression in The Cerebellum of Ischemic Stroke Rats Wati, Eny Rahma; Prasetyawan, Sasangka; Mahdi, Chanif; Srihardyastutie, Arie; Adnyana, Made Oka; Aulanni’am, Aulanni’am
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2018.007.01.363

Abstract

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.
Optimization Of Elevating Blood Uric Acid Levels With High Purine Diet Rahmawati, Fitria; Nugraheni, Putranty Widha; Mahdi, Chanif; Srihardyastutie, Arie; Prasetyawan, Sasangka
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2018.007.01.357

Abstract

Exploration of the use of medicinal plants to lower uric acid levels has been widely practiced. Stages of new drug development research is a preclinical test using experimental animals, therefore the manufacture of an animal model of hyperuricemia is necessary. This study aims to determine the optimal induction of uric acid to increase blood uric acid levels by administering high purine foods such as cow’s liver, cow’s spleen, Gnetum gnemon, emping and fried peanuts. Eighty male white rats were used individuals to be divided into 4 groups, they were: (I) cow’s liver, (II) cow’s liver and cow’s spleen, (III) cow’s liver, cow’s spleen and boiled gnetum gnemon beans, and (IV) cow’s liver, cow’s spleen, emping and fried peanuts. This study using easy touch GCU to measure blood uric acid level. The result of statistical analysis of uric acid level means with 5 times repetition using One Way ANOVA showed that there was a very significant difference between treatments (p <0,01). The results concluded that high purine diet in group I, II and III had not been able to increase uric acid levels significantly. High purine diet group IV was able to increase blood uric acid levels significantly to make the rats experiencing hyperuricemia with the level of 6.54 mg/dL on day 7 and 13.79 mg/dL on day 14.
Effect of Tin Electrode (Sn), Electrode Distance and Thin Layer Size of Zinc Phthalocyanine (ZnPc) to Resistance Changes With Ozone Exposure Mogi, Agustina; Masruroh, Masruroh; Tjahjanto, Rachmat Triandi
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2018.007.01.354

Abstract

This study was aimed to determine the effect of tin electrode distances and the thickness of a thin layer of ZnPc (Zinc phtyalocyanine) toward changes in resistance with ozone exposure. Tin deposition on the glass surface was conducted using spraying method. The reaction between ozone and ZnPc produces electrical properties that can be read through the resistance value of the multimeter. Based on this study, it was investigated that the smaller a distance between the electrode and the thicker deposition of ZnPc lead to the less resistance. This showed that a thin layer of the conductivity increases along with the longer exposure to ozone gas. The movement of electrons with the hole was free.
C-N-Codoped TiO2 Synthesis by using Peroxo Sol Gel Method for Photocatalytic Reduction of Cr(VI) Wellia, Diana Vanda; Fitria, Dytta; Safni, Safni
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2018.007.01.373

Abstract

C-N-codoped TiO2 (CNTO) photocatalysts were successfully synthesized by using “green” method peroxo sol-gel. XRD results revealed the presence of anatase phase only for all samples. The result of Scanning Electron Microscope-Electron Dispersive X-Ray (SEM-EDX) showed surface morphology of CNTO10 was spherical (44 nm) and homogeneous.  Diffuse Reflectance Spectra UV-Vis (DRS UV-Vis) result showed red shift in absorbance indicating successful modification of TiO2 by C and N. The result of photocatalytic activity in reducing Cr(VI) showed that  the Cr(VI) reduction  increase with the increase of irradiation time and photocatalyst’s mass.  The highest Cr(VI) reduction was 90.07% for CNTO10 sample. This is due to the synergistic effects of C and N dopants that improves  TiO2 photocatalytic activity under visible light irradiation.
Synthesis of Patchouli Biochar Cr2O3 Composite Using Double Acid Oxidators for Paracetamol Adsorption Setianingsih, Tutik; Masruri, Masruri; Ismuyanto, Bambang
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2018.007.01.367

Abstract

Composite built by patchouli biochar and metal oxide, Cr2O3, is a potential material for remediation of contaminated wasterwater. Oxidation of biochar using acid or salt oxidators can improve its surface polar functional groups. This treatment may be able to increase impregnation of  metal cation (as salt) before calcination to form its oxide. In this research, 3 types of oxidators were used to oxidize the biochar before impregnation with purpose to study its influence toward physichochemistry and adsorption performance of the composite. Preparation of the composite included 3 steps, including preparation of biochar by pyrolisis of patchouli biomass using ZnCl2 activator at 450 oC, oxidation of the biochar using 3 different oxidators (H2SO4-HNO3, H3PO4-HNO3, H2O2–HNO3) at 60 oC,  impregnation of the oxidized biochar using CrCl3 followed by calcination process to form biochar–Cr2O3 composite at 600 oC. Characterization using X-ray diffraction indicated that the composite containes the Cr2O3 structure.  FTIR spectrophotometry characterization indicates the different content of C=O, C-O, and –OH on the composite surface. SEM images shows irregular micro ball shapes. EDX characterization indicates the different Cr content in the composite with same sequence with FTIR absorbances of  both C-O and –OH. Adsorption of paracetamol  indicates effect of Cr2O3 showing the same sequence of both. 
Chemical Composition of Oil Fraction Kaffir Lime (Citrus hystrix DC) as Antibacterial Activity of E.coli Habsari, Rahmatika Ayu; Warsito, Warsito; Noorhamdani, Noorhamdani
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2018.007.01.352

Abstract

The purpose of this research is to know the composition of fraction oil kaffir lime which is consist as antibacterial activity E.coli. This research uses kaffir lime oil from a branch for fractional distillation use PiloDist 104-VTU (number the stages 120), and reflux ratio 20/10 with 5 mbar pressure. Oil kaffir lime composition analysis use GC-MS (type Shimadzu QP 2010S) with a gas helium on speed 3mL/minute. Antibacterial activity assay use agar well diffusion assay which does in three concentration they are 500 µL/mL, 300 µL/mL, 100 µL/mL. The result of oil fraction kaffir lime has five fraction oil based on boiling point interval, they are A fraction oil (63,00 – 70,010 C), B fraction (71,30 – 70,800 C),  C fraction (74,50 – 74,200 C),  D fraction (74,20 – 74,000 C) and E fraction (72,90 – 91,100 C). The result of this research obtained five oil fraction they are monoterpene oxygenated (MO) except A oil fraction with monoterpene hydrocarbon composition (MH) 12,1%. The main component of a fraction which MO compound they are citronella, linalool and isopulegol, while in MH compound they are sabine, β-pinen, β-micren and limonene. The result of antibacterial activity assay obtained on highest concentration it is 500 µL/mL. Antibacterial activity assay also depends on fraction composition with higher composition of MO. The highest MO components of oil fraction on C oil fraction which has MO component such as citronella 74,94%; linalool 20,13%; and isopulegol 3,08%.
Biosorption of Lead(II) using Trichoderma viride in the Aqueous Solution Taloin, Rensani; Safitri, Anna; Prasetyawan, Sasangka; Kamulyan, Budi; Andayani, Ulfa
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2018.007.01.399

Abstract

Lead(II) is considered as the main cause of pollutant that is toxic, corrosive, and irritant. One method that can be applied for reducing Pb(II) in the environment is by using microorganisms. In this work, the study of biosorption of Pb(II) in the water samples was conducted using Trichoderma viride. The research is focused on determination of optimum conditions including pH, biosorption time, and initial concentration of Pb(II) used. The profiles in functional groups contained in the T. viride have been monitored using FT-IR spectrophotometry. Results showed that the maximum biosorption of Pb(II) achieved at pH 4.5, with equilibrium of contact time of 20 h, optimum concentration of 50 mg/L, and adsorption capacity of 85 mg/1x106 T. viride colonies. The FTIR results indicated that biosorption process changed the functional groups in the T. viride. These have shown in the absorption bands at ~3200 cm-1, ~2850 cm-1, ~2260 cm-1, ~1650 cm-1,  ~1450 cm-1, 1180 cm-1, and in the finger printing regions. The biosorption mechanism was proposed through the adsorption process between positively charged metal ions and the negative charge on the functional groups, such as -COO-, -OPO32-, and –NH2-, on the cell surface.
NPK Fertilizer With Slow Release Fly Ash Izzatur Silmi, Nadhira; Azaria Antasari, Fidela; Afriyana, Della; Rahmawati, Ridha Dini; Sidik, Ilham; Wardhani, Sri
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2018.007.01.347

Abstract

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 Karimi Fard, Abbas; Deldar, Ali Asghar; Sedaghat, Saeed
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2018.007.01.369

Abstract

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.

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