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The Journal of Pure and Applied Chemistry Research
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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Oxidation of Cellulose and Nanocellulose Isolated from Paraserianthes falcataria by Potassium Permanganate Ikhtiarini, Nur; MASRURI, Masruri; Mariyah Ulfa, Siti; Widodo, Nashi
The Journal of Pure and Applied Chemistry Research Vol. 12 No. 3 (2023): September-December 2023
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2023.012.03.3331

Abstract

A high crystallinity proportion of cellulose and nanocellulose in some points contribute to the solubility in polar solvent. This paper reports oxidation reaction study by using potassium permanganate of the cellulose and nanocellulose isolated from the soft wood of Paraserianthes falcataria.  The reaction was conducted under acidic condition at 30 and 70°C for 12 and 24 hours. The product was characterized by FTIR, XRD, SEM, DTA-TGA, and solubility test. Oxidation of cellulose resulted in the opening of hemiacetal of glucopyranose chain, as indicated by carbonyl peak recorded in FTIR spectra. The particle size was determined and amorphous product of cellulose and nanocellulose was isolated. In addition, the DTA/TGA analysis indicate the oxidized cellulose give a more stable structure than the nanocellulose.
Phytochemical screening, investigation of the antisalmonella, antishigella, and antioxidant properties of the leaves of Rauvolfia vomitoria Afzel Kpadonou-Kpoviessi, Bénédicta; Noudamadjo, Amandine; Goueti, Basile; Atchade, Bardieu; Djouonzo Toukam, Paul; Gbenou, Joachim; Glinma, Bienvenu; Dossou Sika KPOVIESSI, Salomé
The Journal of Pure and Applied Chemistry Research Vol. 13 No. 1 (2024): Edition January-April 2024
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2024.013.01.3328

Abstract

Rauvolfia vomitoria is a plant acclimatized in Benin - Africa that people use to treat several illnesses such as malaria, cough, typhoid fever, madness, toothache, diabetes, and nausea. The most used organs are leaves, stems, and roots. Thus, the purpose of this work is to contribute to the valorization of R. vomitoria by chemical and biological studies of this plant. Phytochemical analyses of the powder extracts were performed and revealed the presence of alkaloids, tannins, flavonoids, anthocyanins, saponins, terpenes, coumarins, mucilages, reducing compounds, free anthracene derivatives, bound anthracene derivatives (O-glycosides and C-glycosides) with absence of leuco-anthocyanins, quinone derivatives, steroids and cardiotonic glycosids. Evaluation of antisalmonella and antishigella properties of ethanol-water (70:30; V/V) and ethanolic extracts of R. vomitoria leaves showed minimum inhibitory concentrations (MIC) greater than 2000 µg.mL-1 against Salmonella and Shigella strains. The ethanolic extract was the most active by ABTS and FRAP methods and had very good antioxidant activity at scavenging concentration (SC50) equal to 138,62 µg.mL-1 and 185,99 µg.mL-1 respectively
Adsorption of Fe Metal Ions in Laboratory Wastewater with Chitosan from Fish Scales Ramadhini, Tri Karimah; Agustina, Tuty Emilia; Fadhlurrahman, M Arif; Nufus, Dian Natasya Alfa; gayatri, Ryaniza
The Journal of Pure and Applied Chemistry Research Vol. 13 No. 3 (2024): Edition September-December 2024
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2024.013.03.5501

Abstract

Laboratory wastewater contains organic compounds and heavy metals, such as iron (Fe), manganese (Mg), chromium (Cr), and mercury (Hg). These pollute the environment, especially the groundwater. One alternative to process laboratory wastewater by using adsorption method. The adsorption method requires an absorbent. The waste from fish scale was reported contains chitosan and can be applied as adsorbent materials. The paper reports our preparation of chitosan from fish scales. Then, it was applied as adsorbent, and studying the effect of chitosan weight / dose, pH, and stirring time for removal of iron metals ion. The best Fe removal percentage of 99.82% was obtained by using the chitosan dose of 2 g and a stirring time of 60 minutes. The pH condition with the highest Fe removal percentage was at pH 4 (99.98%). The optimum condition then applied to laboratory wastewater. The developed strategic was able to meet the standard for water quality according to Minister of Environment Regulation No. 5 in 2014.
Potential of Easily Prepared Low-Cost Natural Clay for the Cationic Adsorption of Methylene Blue Dye Susanti, Indri; Rosdiana, Silvi Rosiva; Sajidah, Happy Bunga Nasyirahul; Sholeha, Novia Amalia; Iqbal, Rendy Muhamad
The Journal of Pure and Applied Chemistry Research Vol. 13 No. 3 (2024): Edition September-December 2024
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2024.013.03.7900

Abstract

The research aims to synthesize and characterized the properties of Natural Clay as adsorbent of cationic methylene blue which was easly prepared low-cost to be natural clay powder. Prepared natural clay then characterized by XRD, FTIR, and XRF. The methylene blue adsorption was tested using batch method with further analysis by spectrophotometry UV-Vis. The adsorption data then be analyze kinetic perform. The result showed that methylene blue adsorption capacity of natural clay is up to 72.51% While the kinetic study of methylene blue adsorption using natural clay showed that methylene blue adsorption process was suitable with kinetic model of Pseudo Second Order.
Evaluation of Mineral-Based Zn-Doped Hydroxyapatite as a Photocatalyst for Methylene Blue Degradation Nisrina, Aniqa; Karya, Teguh; Halim, Riyan; Murniati, Anceu; Hardian, Arie; Gustaman Syarif, Dani; Rostika Noviyanti, Atiek; Jasmansyah, Jasmansyah; Reza, Muhammad
The Journal of Pure and Applied Chemistry Research Vol. 13 No. 3 (2024): Edition September-December 2024
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2024.013.03.7908

Abstract

Methylene blue is a synthetic dye known to be harmful to aquatic environments. Therefore, efforts are needed to minimize methylene blue waste. This study focuses on degrading methylene blue through photocatalysis, a method chosen for its affordability and ease of use. The photocatalyst used is hydroxyapatite (HAp) derived from limestone (CaCO3) doped with zinc ions (Zn2+). This combination enhances the efficiency of breaking down dye molecules in liquid waste. The photocatalytic performance was tested under three variations: solution concentration, contact time, and pH, using an 8-watt UV lamp for specified durations. Solution absorbance was measured using a Shimadzu 1800 UV-Vis spectrophotometer. Optimal conditions for methylene blue photodegradation by Zn-doped HAp were achieved at 67.2% efficiency for 5 ppm concentration, 16.125% for 120 minutes of irradiation, and 34.86% at pH 7. Additionally, the study included an analysis of adsorption isotherm models for concentration variation and kinetic adsorption analysis for time variation. The Langmuir and Temkin adsorption isotherm models were found to be most suitable with an R2 = 1. The photodegradation kinetics model followed pseudo second-order kinetics with an R2 = 0.990.
Hydrogenation of Alpha-pinene over Nickel Nanoparticles under Mild Condition Pressure Rizqi Alima Fabri, Ahmad; Warsito, Warsito; Ulfa, Siti Mariyah; Masruri
The Journal of Pure and Applied Chemistry Research Vol. 13 No. 3 (2024): Edition September-December 2024
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2024.013.03.7916

Abstract

Alpha-pinene is the main compound in turpentine oil and is widely used as a fragrance, fine chemistry, flavour, and antibacterial. Due to the presence of unsaturated double bonds in its structure, this compound’s chemical properties are relatively active. Hydrogenation is a common method for saturating compounds and nickel has shown good activity in this process as catalysts. However, it often shows reaction conditions such as high pressure. The research method added nickel chloride to a suspension mixture of NaBH4 in isopropyl alcohol until a black colloidal solution and a-pinene reagents were added. Hydrogen gas was added in different conditions, with a pressure of 2-4 atm at the temperature of 50-60 oC 24h. The result showed a nickel formed at a nanoparticle size of 34-81 nm. Furthermore, FT-IR results show a difference in intensity at wavelengths of 1600 and 3000 cm-1, indicating the formation of hydrogenation products. The GC-MS shows a new peak at a retentivity of 5.503, which characteristics show that it is identified as a pinane compound with the highest percentage of 63% at a reaction condition of 4 atm. 
The Effect of Temperature and Solvent Concentration on Chemical and Physical Properties of Carrageenan from Gracilaria gracilis Erawati, Emi; Fatoni, Rois; Hamid, Hamid; Noviasari, Tri
The Journal of Pure and Applied Chemistry Research Vol. 14 No. 1 (2025): Edition January-April 2025
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2025.014.01.695

Abstract

Carrageenan is a polysaccharide extracted from seaweed sap using either air or an alkaline solution, such as Gracilaria gracilis. It functions as a thickening, emulsifying, suspending, and stabilizing agent. This paper reports the effect of KOH concentrations and temperatures on the extraction, in addition to determining the physical and chemical properties of the seaweed. A dried G. gracilis was soaked in distilled water for 24 hours and heated at 85°C for two hours. It was found the fat content was 3.56%, protein content 17.68%, moisture content 1.984%, and ash content of 26.547%. The highest values for water holding capacity (WHC) were 4.07 g/g, oil holding capacity (OHC) 3.539 g/g, swelling capacity (SC) at 1.894 mL/g, solubility index (SI) at 10.843 g/100g, emulsifying activity (EA) at 73.483%, and pH at 7.520.
Antibacterial Potential of SrBi2Ta2O9 Synthesized via Molten Salt Method Izzah, Nuril Lailatul; Savira, Amalia; Ma’unatin, Anik; Safitri, Widya Nur; Hardian, Arie; Prasetyo, Anton
The Journal of Pure and Applied Chemistry Research Vol. 14 No. 1 (2025): Edition January-April 2025
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2024.014.01.3352

Abstract

One of the interesting properties of Aurivillius compounds is photocatalysts; therefore, they have the potential to be used as antibacterials. However, the study of the antibacterial properties of Aurivillius compounds is still very limited, therefore it’s important to conduct research on it’s properties. Our research aims to study the photocatalytic activity of SrBi2Ta2O9 compounds synthesized by molten salt method (using NaCl/KCl salt) as antibacterial. The diffractogram of the sample shows that the SrBi2Ta2O9 was successfully synthesized, but an impurity phase was formed as Bi2O3, Ta2O5, and SrBi2.83Ta5O15. The SEM images show that the morphological shape obtained is plate-like, which still has agglomeration with particle size distribution at range 20-80 μm. Plot tauc shows that the band gap energy of SrBi2Ta2O9 compounds is 2.8 and 3.06 eV, respectively. The antibacterial activity test results showed that the SrBi2Ta2O9 compound can inhibit staphylococcus bacterial growth under and without light radiation. It indicates that there are two possible mechanisms related to the inhibition of bacterial growth i.e: (a) photocatalysis, and (b) toxicity properties.
Antioxidant Potential of Secondary Metabolite from Kelakai (Stenochlaena palustris) as a Natural Growth Promoter Through Inhibition of Inducible Nitrite Oxide Synthase (iNOS) Irmawan, Muhammad; Kumalasari, Meiyanti Ratna; Sandriya, Ardi; Fariz Noorrahman, Nabil; Ysrafil, Ysrafil; Tesalonika, Lidya
The Journal of Pure and Applied Chemistry Research Vol. 14 No. 1 (2025): Edition January-April 2025
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2025.014.01.6534

Abstract

Kelakai (Stenochlaena palustris), a plant native to Central Kalimantan, is recognized for its potent antioxidant properties. This study aimed to investigate the preparation, extraction, phytochemical composition, antioxidant potential, and molecular interactions of secondary metabolites derived from Kelakai, emphasizing its health-promoting benefits and possible use as a natural growth enhancer. The findings revealed that the Kelakai extract contained various secondary metabolites, including alkaloids (8.868%), flavonoids (5.3%), saponins (10.76%), phenolics (1.246%), tannins (0.067%), and triterpenes (30.7%). The extract demonstrated a powerful antioxidant effect, with an IC50 value of 44.81 μg/mL. Molecular docking analysis identified chlorogenic acid and eucalyptol as essential compounds contributing to the extract's antioxidant activity. These compounds effectively inhibit the iNOS protein, with binding free energy (ΔGbinding) values of -10.3044 kcal/mol and -6.0872 kcal/mol, respectively. These findings suggest that kelakai extract possesses significant antioxidant potential and may offer valuable applications as a natural growth promoter for broiler chickens.
Exploration of Total Flavonoid Content, Toxicity, and Antibacterial Activity of Acorus calamus L. Rhizome Isolates Amalia, Suci; Jannah, Faridatul; Afriani, Ida Irma; Dewi, Diana Candra; Fasya, A. Ghanaim
The Journal of Pure and Applied Chemistry Research Vol. 14 No. 1 (2025): Edition January-April 2025
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpacr.2025.014.01.7914

Abstract

Acorus calamus L. is a medicinal plant with rhizomes commonly used in traditional medicine. This study aimed to determine the total flavonoid content, toxicity, and antibacterial activity of isolates from the rhizome of Acorus calamus L. The rhizome extract was sonicated using 70% ethanol, yielding 18.73% (w/w), and partitioned using ethyl acetate, yielding 10.80% (w/w). Subsequently, the ethyl acetate fraction was further separated using column chromatography. FTIR analysis of the ethanol extract, ethyl acetate fraction, and column isolates confirmed the presence of O–H functional groups and other vibrations, indicating the presence of flavonoid compounds. UV analysis revealed absorption at the band I (302, 302, 383 nm) and band II (253, 254, 258 nm). The total flavonoid content of the isolates, determined using AlCl3, was 32.95 mg QE/g. Liquid Chromatography-Mass Spectrometry (LC-MS) analysis of the column chromatography isolates identified the presence of isorhamnetin, quercetin, genistein, and glycitein. Furthermore, toxicity and antibacterial activity tests on the ethanol extract and ethyl acetate fraction showed LC50 values of 143.53 ppm and 41.16 ppm, respectively, and inhibition zone diameters ranging from 2.30-4.54 mm and 2.63-5.29 mm, respectively.

Page 29 of 31 | Total Record : 307

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