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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 307 Documents

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

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 Alifiani Nur Rohma; Chanif Mahdi; 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

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.

The Effect of Phosphatation and Granulation Zeolite in the Adsorption of Cr(VI) Sri Wardhani; Reno Sunarinda Endrayana; Danar Purwonugroho
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 purpose of this research to study effect of contact time on adsorption of Cr(VI) ion using Granules Alumino Silico Phosphate (GASP) and the effect of Cr (VI) concentration on adsorption capacity at GASP. The GASF synthesis process is carried out in several main stages: 1) activation of zeolite with addition of HCl, 2) zeolite phosphatation with addition of NH4H2PO4 ratio Si/P = 1/6 at 235ᴼC for 5 hours, 3) how make GASP with addition of zeolite phosphate (Alumino Silicone Phosphate) and chitosan gel with a syringe pump speed of 50 mL/min. GASP is characterized using XRF, FT-IR and SAA. The contact time effect is tested using 0.1 g of GASF in K2CrO4 100 mg/L with a contact time variation of 0.5; 1.0; 1.5; 2.0 and 2.5 hours. The concentration effect on adsorption capacity is tested out using 0.1 g of GASP in K2CrO4 with concentration variation 25, 50, 75, 100 and 150 mg / L for 2 hours (optimum contact time). The adsorption capacity can be determined using the Langmuir equation. XRF characterization results showed a decrease in SiO2 levels of 18.10% and Al2O3 by 2.2% after phosphatation process. FTIR characterization results indicate the presence of O-H, N-H and C-H chitosan on absorption bands 1-3. The success of the phosphatation process was evidenced by the shift of wave numbers to the lower regions in the bands 7, 9 and 12 the absorption of tetrahedral silica and alumina shifted to bands 8, 10 and 13 tetrahedral phosphate uptake in accordance with Hooke's law. The result of the research showed that the optimum contact time occurred in the adsorption process for 2 hours. The concentration variation was directly proportional to the increase of the adsorbed Cr (VI) ion mass. The presence of phosphatation and chitosan addition process can increase the value of adsorption capacity by 48,077 mg / g.

Physical Properties and Characterization of Cassava Peel Waste Modified by Esterification Suci Susanti; Denis Al Karoma; Dian Mulyani; Masruri Masruri
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

Cassava starch (Manihot esculenta) is polysaccharide compound which comprises of amylose and amylopectin. This paper demonstrated the characterization result of cassava peel waste modified by esterification with acetic acid and oleic acid. The products were analyzed by FT-IR, PSA, SEM, and XRD. FT-IR results represented carbonyl compound. DS value of acetic acid and oleic acid modification is 0.63 and 0.56, respectively. Characterization by PSA found the distribution frequency was 358.19 mm. SEM analysis was obtained rigid structure. From XRD result, the crystallinity of modified flour better than without modification.

C-N-Codoped TiO2 Synthesis by using Peroxo Sol Gel Method for Photocatalytic Reduction of Cr(VI) Diana Vanda Wellia; Dytta Fitria; 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

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 Tutik Setianingsih; Masruri Masruri; Bambang Ismuyanto
The Journal of Pure and Applied Chemistry Research Vol 7, No 1 (2018): Edition January-April 2018
Publisher : Chemistry Department, The University of Brawijaya

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.

The Toxicity Effect of Organophosphate (Diazinon) towards Duodenum Histopathology and The Activity of Superoxide Dismutase (SOD) Serum in Rats (Rattus Norvegicus) S. Efi Ulansari; Anna Roosdiana; Dyah Ayu Oktavianie A. P.
The Journal of Pure and Applied Chemistry Research Vol 7, No 2 (2018): Edition May-August 2018
Publisher : Chemistry Department, The University of Brawijaya

Diazinon is an organophosphate insecticide that can inhibit acetyl-cholinesterase competitively and increase the production of Reactive Oxygen Species (ROS). ROS affect the activity of antioxidant enzymes such as superoxide Dismutase (SOD), and simultaneously ROS cause damage to the cells and duodenum tissue. The toxicity effect of diazinon was investigated by measuring the activity of SOD serum and histopathology of the duodenum in rats (Rattus norvegicus). The activities of SOD serum were measured by using spectrophotometry, and histopathology changes of the duodenum were observed by using HE staining. Rats were divided into 4 groups, negative control group (K-), P1, P2, and P3 groups which were administrated with diazinon for 8 weeks orally with a dose of 20 mg/kgBW, 40 mg/kgBW, and 60 mg/kgBW respectively. The results showed that administration of diazinon orally decreased SOD activity significantly and caused damage of duodenal villi such as hyperplasia of epithelial cells, epithelial erosion, fatty degeneration, hyperplasia of Liberkuhn gland cells, and hemorrhage in the lamina propria.

Fabrication of Hydrophobic Indonesia Bamboo Modified by Octa Fluoro 1-Pentanol (OFP) Based on TiO2 Thin Film for Self-cleaning Application Diana Vanda Wellia; Arifah Mustaqimah; Wulandari Wulandari; Zulhadjri Zulhadjri; Syukri Syukri; Nurul Pratiwi
The Journal of Pure and Applied Chemistry Research Vol 7, No 2 (2018): Edition May-August 2018
Publisher : Chemistry Department, The University of Brawijaya

The ultra-hydrophobic surface on Indonesia bamboo timber has been successfully prepared using OFP (2,2,3,3,4,4,5,5-octafluoro-1-pentanol) as a modifier agent. The hydrothermal method has been used to fabricate anatase TiO2 film followed by OFP modification. Maximal water contact angle of 123ο has been obtained for the composition of 10 mL of OFP and 15 mL of 2-propanol (B-T-OFP10). XRD analysis showed the existence of pure anatase TiO2 film on bamboo timber, confirmed by EDS result. SEM image of a TiO2-coated and a typical ultra-hydrophobic bamboo timber revealed irregular aggregates of spherical TiO2 on the surface and compact ultra-hydrophobic surface, respectively. The optimum sample (B-T-OFP10) showed excellent mechanical stability, self-cleaning property, and flame retardancy compared to pure bamboo timber.

L-Histidine-Modified Silica from Rice Husk and Optimization of Adsorption Condition for Extractive Concentration of Pb(II) Nurhajawarsi Nurhajawarsi; Mohamad Rafi; Utami Dyah Syafitri; Eti Rohaeti
The Journal of Pure and Applied Chemistry Research Vol 7, No 2 (2018): Edition May-August 2018
Publisher : Chemistry Department, The University of Brawijaya

A new chelating agent, L-histidine-modified silica from rice husk (LHSRH), was prepared to increase the adsorption capacity and selectivity for Pb(II). LHSRH was synthesized by immobilizing L-histidine on silica from rice husk (RH) modified with 3-aminopropyltrimethoxysilane (APTMS). Silica from rice husk (SRH) was synthesized via precipitation process by adding hydrochloric acid solution to rice husk ash (RHA). The RHA was subsequently destructed with sodium hydroxide and heated to obtain sodium silicate (Na2SiO3). SRH was characterized by Fourier transform infrared spectroscopy and x-ray diffraction. The LHSRH was used further to adsorp Pb(II) metal ion. The pH range, amount of adsorbent, and adsorption time were optimized by response surface methodology. The optimum condition for the adsorption of Pb(II) was pH 5, an amount of adsorbent 0.1 g; and adsorption time 15 minutes. The adsorption capacity for Pb(II) ion was found to be 62.5 mg/g. The adsorption behavior of the matrix followed the Langmuir’s model.

Synthesis and Characterization of Ni/Hydrotalcite and Its Application in Hydrocracking Calophyllum Inophyllum Oil Hafshah Hafshah; Danawati Hari Hari Prajitno; Achmad Roesyadi
The Journal of Pure and Applied Chemistry Research Vol 5, No 3 (2016)
Publisher : Chemistry Department, The University of Brawijaya

This research aims to synthesize hydrotalcite as an alternatives of catalyst support of hydrocracking of vegetable oils. Hydrotalcite can be synthesized in several ways, the most common is coprecipitation method. Hydrotalcite was synthesized using Mg/Al mole ratio of 1: 1, NaOH and Na2CO3 as base solutions. Ni/hydrotalcite catalyst was synthesized by incipicient wetness impregnation method with Ni impregnation of 10% w/w. The characterization of the crystal structure was determined by X-ray diffraction (XRD). The spesific surface area (SBET) was determined by adsorption-desorption of nitrogen, it were obtained 201 m2/g after impregnation and 191 m2/g before impregntion. The test of performance of catalyst was conducted by hydrocracking reaction of Calophyllum inophyllum oil. The liquid products were analyzed by gas chromatography mass spectrometry (GC-MS). Hydrocracking process produced gasoline, kerosene, gas oil with yield of 0.36%, 2.45%, 54.88% respectively, conversion of 96.26% and selectivity of gas oil of 84.39%.

Page 12 of 31 | Total Record : 307

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Jawa timur

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Home Page

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Editorial Team

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Contact Name Masruri

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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