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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 6, No 2 (2017): Edition of May-August 2017" : 10 Documents clear
RETRACTED ARTICLE: Study on Esterification Reaction of Starch Isolated from Cassava (Manihot Esculenta) with Acetic Acid and Isopropyl Myristate Using Ultrasonicator Amini, Helda Wika; Masruri, Masruri; Ulfa, Siti Mariyah
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2017.006.02.299

Abstract

This article has been retracted at the request of managing editor.REASON: One of the conditions of submission of a paper for publication is that authors declare explicitly that their work is original and has not prepared and/or appeared in any other publication elsewhere. As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process.Similar article has appeared in http://iopscience.iop.org/article/10.1088/1757-899X/299/1/012079/pdf 
Estimation of Ketorolactromithamine in Phamaceutical Samples and Biofluids by The New Validated UPLC Method Uddin, Mohammad Nasir; Uddin, Monir; Kabir, Md. Touhidul; Das, Suman
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2017.006.02.318

Abstract

A new UPLC method has been described to determine ketorolac tromethamine in pharmaceutical samples and biofluids. Drug was eluted using a reversed-phase Gemini 3U, C18, 110R (150 × 4.6 mm, 3 μm) column when a mobile phase composition 90:05:05 (v/v) consisting CH3OH, CH3CN and NaH2PO4 under isocratic program.Ketorolac tromethamine was eluted at a short of time 2.02 min. Ketorolac tromethamine isolated from biofluids after liquid-phase extraction. The results were linear up to 10 µg mL-1 with the correlation coefficients greater than 0.999. The sensitivity limits, LOD and LOQ were 0.016 and 0.051 µg mL-1, respectively. The method is simple, fast and reliable with good specificity and sensitivity and will be suitable for routine analysis of ketorolac tromethamine.
Mass Spectrometry Analysis of Chromium-Binding Low-Molecular-Weight Serum Fractions Safitri, Anna; Levina, Aviva; Lay, Peter A
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2017.006.02.326

Abstract

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.
In Vitro and In Silico Study of Immobilized Xylanase from Trichoderma viride using Bentonite Matrices Activated with HCl Lailah, Nur; Prasetyawan, Sasangka; Srihardyastutie, Arie
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2017.006.02.330

Abstract

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%.
Effect of Topical Aplication of Gel Aloe Vera Extract on The UVB-Induced Skin Photoaging in Hairless Rats Lailiyah, Izzatul; Prasetyawan, Sasangka
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2017.006.02.321

Abstract

UVB generates the production of Reactive Oxygen Species (ROS) and decrease antioxidants enzymatic excessively. Both of these biological effects caused photo-aging. Excessive ROS production afforded overexpression of AP-1 as a major regulator of photoaging. This paper figured out the potential of Aloe vera extract as topical gel treatment on the UVB-induced skin photo-aging in twenty male wistar hairless rats (Rattus novergicus) divided into 2 groups. First group was induced by UVB and the second was induced by UVB and topical gel extract Aloe vera treatment. Each group was given treatment for 4 weeks. The expression of MDA and SOD were measured with immunohistochemistry. The result showed that the topical gel therapy decreased the MDA expression and increased SOD expression significantly (p < 0.01). The conclusion from this study was Aloe vera extract had potentially as an alternative topical treatment of photoaging.
Therapy of Lactobacillus casei Shirota strain Fermented Milk to Rats with High-Cholesterol Diet toward Cholesterol Levels and SOD Activity Rohma, Alifiani Nur; Mahdi, Chanif; Aulanni’am, Aulanni’am
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2017.006.02.332

Abstract

This study aimed to determine the fermented milk of Lactobacillus casei Shirota strain potential on cholesterol levels, SOD activity, LPL enzyme activity, and cardiac histopathology. This study used 25 rats (Rattus novergicus) Wistar strain aged 2-3 months, weighing 150-200 grams. These rats were divided into 5 groups: negative control group, positive control group with high-cholesterol diet for 21 days, and therapy group with 1.0 ; 1.5 ; 2.0 mL/rat/day of fermented milk for 14 days. The analysis methods used in this study are One Way ANOVA and Tukey. The results showed that the fermented milk of Lactobacillus casei Shirota strain had a strong effect on blood cholesterol levels and increasing the SOD activity. This study also showed that the fermented milk of Lactobacillus casei with 2.0 mL/rat/day is the most effective dose to decrease the total cholesterol and increase the SOD activity.
Absorption Activity of Cassava Peel (Manihot utilissima) as Chromium (VI) Metal Biosorbent in Electroplating Waste Candrawati, Iin; Martak, Fahimah; Cahyo, Yurike Ika
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2017.006.02.313

Abstract

Electroplating is a process of metal veneering with another metal using the electric energy. The water waste of electroplating industry contains many kinds of heavy metal ions, especially chromium (VI) which might cause pollutions if it was not processed and it presents above the threshold allowed. The use of cellulose can be a solution, because it has the functional groups which form bonding with the metal ions. Cassava peel is one of the sources of cellulose which contains 80-85% of cellulose. This proves that cassava peel (Manihot utilissimaI) has the potential as the heavy metal biosorbent of chromium metal in electroplating waste. The methodology of the research is conducted in a series including analysis of heavy metal concentrations of chromium (VI) in electroplating waste. Biosorption treatment of cassava peel (Manihot utilissimaI) biosorbent activated by HNO3 1.5 M in electroplating waste conducted in the batch method. Analysis of heavy metal concentrations of chromium (VI) in electroplating waste was performed by Atomic Absorption Spectrophotometry (AAS) after biosorbtion process. Variation of biosorbent mass were (0.1, 0.2, 0.3, 0.4, 0.5) grams, and variation of biosorbent contact time were (10, 20, 30, 40, 50) minutes. The analysis result recorded by AAS (Atomic Absorption Spectrophotometry) showed that the level of total chromium in electroplating waste reaches 2.0777 ± 0.2785 ppm. Accordingly, the chromium test solution used in this research was 2 ppm to measure the optimum conditions of % chromium (VI) adsorbed with variation of mass and contact time. From the results of this research, the optimum mass and contact time of cassava peel biosorbent activated by HNO3 1.5 M in % chromium (VI) adsorbed were 0.1 gram and 40 minutes, respectively. Finally, the optimum mass and contact time of cassava peel biosorbent activated by HNO3 1.5 M has applied to electroplating waste. The % chromium adsorbed in electroplating waste with the addition of cassava peel biosorbent activated by HNO3 1.5 M was measured in average of 61.72%. 
Profiling of The Lemongrass Oil Aroma and Their Structure-Odor Relationship: In Silico Study Qodri, Udrika Lailatul; Utomo, Edi Priyo; Iftitah, Elvina Dhiaul
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2017.006.02.329

Abstract

Structure-odor relationship (SOR) has previously studied by semantic numerically in different Fragrance. We hypothesise that in silico method such as molecular dynamics, together with docking of the interaction between human olfactory receptor (OR1G1) and ligands, can offer extremely valuable tools of modelling SOR. Hence, the present study was carried out to express the SOR of citronellal oil fraction compare with reference smelling of floral, musk, green, wood, and fruit by employing docking and multiple discriminant analysis (MDA). Our study reveals that the number dissociation constant (Kd), bond distance, HOMO-LUMO (AE), dipole moment, kind of amino acids, Log P, surface area and hydropathy as the variable SOR from in silico anaysis. Our result has shown ligands and OR1G1 interacted with Van Der Waals and electrostatic model. MDA analysis shown molecule reference floral and fraction of lemongrass oil  have similar correlation based on variable SOR with linier regression of all variable SOR to Kd value for every reference odor is R2 = 1.  
Co-Ni/HZSM-5 Catalyst for Hydrocracking of Sunan Candlenut Oil (Reutealis trisperma (Blanco) Airy Shaw) for Production of Biofuel Muttaqii, Muhammad Al; Marlinda, Lenny; Roesyadi, Achmad; Prajitno, Danawati Hari
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2017.006.02.257

Abstract

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 Nurhidayati, N; Ali, Usman; Murwani, Indiyah
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2017.006.02.309

Abstract

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.

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