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Contact Name
Ajuk Sapar
Contact Email
ajuk.sapar@chemistry.untan.ac.id
Phone
+6281282990575
Journal Mail Official
anthoni.b.aritonang@chemistry.untan.ac.id
Editorial Address
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Tanjungpura University Jl. Prof. Dr. Hadari Nawawi, Pontianak, Kalimantan Barat, Indonesia
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Kota pontianak,
Kalimantan barat
INDONESIA
Indonesian Journal of Pure and Applied Chemistry
ISSN : 26208571     EISSN : 2620858X     DOI : -
Core Subject : Science,
Indonesian Journal of Pure and Applied Chemistry (IJoPAC) was first established in 2018 as a scientific journal that accommodates researchers and education practitioners to publish scientific work and research results which are the results of experiments or literature studies in the field of chemistry. Publications are carried out periodically with three issues (January-April, May-August, September-December) in one volume per year. Published scientific work can be in the form of original articles, short communications and review results covering the fields of Physical chemistry, Organic chemistry, Analytical chemistry, Inorganic chemistry, Biochemistry / Biological Chemistry, Applied Chemistry. Focus and Scope of Indonesian Journal of Pure and Applied Chemistry covering the fields : Physical chemistry Organic chemistry Analytical chemistry Inorganic chemistry Biochemistry/Biological Chemistry Applied Chemistry
Articles 51 Documents
ASAP CAIR DARI LIMBAH KULIT MANGROVE Avicennia alba UNTUK PENGAWETAN BAKSO IKAN (LIQUID SMOKE FROM MANGROVE SKIN WASTE Avicennia alba FOR THE PRESERVATION OF FISH BALLS) Aritonang, Anthoni Batahan; Wenisda, Fransiska M; Sofiana, Mega S
Indonesian Journal of Pure and Applied Chemistry Vol 3, No 1 (2020)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/ijopac.v3i1.46561

Abstract

Liquid smoke has been successful pabricated from mangrove Avicennia alba shell by pyrolysis method at a temperature of 400℃ for 3 hours. Liquid smoke was purified by adsorption using activated kaolinite as adsorbent.  The test results showed that activated kaolinite could bring down the rancidness to become odorless and the color of liquid smoke from dark chocolate to gray colour. The composition of the liquid smoke compound was determined by using the Gass Chromatography-Mass  Spectrophotometer (GC-MS) consists of 2-propanone (CAS) acetone 25.79% and furan, tetrahydro- of 10.37% and carbamic acid, monoammonium salt (CAS) ammonium carbamate of 58.46% . The LC50 value of pure liquid smoke ranging from 1000 ppm is an indication that it is not toxic and safe to use for food preservation.  Activity test against the inhibition of microbial growth in fish meatballs, showed that ability. The higher the concentration of liquid smoke, the better the inhibition of microbial growth. Based on the results, it can be concluded that the liquid smoke produced from mangrove Avicennia alba shell purified by the activated kaolinite is very promising as a foodstuffs preservative
SINTESIS DAN TRANSISI ELEKTRONIK KOMPLEKS TEMBAGA (II)-KLOROFIL Silalahi, Imelda Hotmarisi; Julan, Julan; Yusprianto, Muhammad; Rudiyansyah, Rudiyansyah
Indonesian Journal of Pure and Applied Chemistry Vol 3, No 3 (2020)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v3i3.44149

Abstract

The copper (II)-chlorophyll complex was prepared from the reaction between the chlorophyll isolated from cassava leaves and the metal ion precursor, CuSO4.5H2O in methanol under reflux for four hours. The FTIR spectra of the reaction product compared to the chlorophyll spectra show an indication of a complexation through metal coordination with the N atom from the phyrol ring replacing the magnesium (II) ion in chlorophyll.This assumption is drawn based on changes on FTIR spectra, i.e. vibration absorption originating from the CN and NH groups in the porphyrin ring and the appearance of the distinctive vibration band of nitrogen-metal bonds which is annotated as Cu-N groups at 599.88 cm-1. Another sign is the change in the OH and CO vibration bands which imply changes in aggregate properties that occur through inter-molecular interactions due to the introduction of copper (II) metal into the chlorophyll structure. The formation of copper (II)-chlorophyll compounds is also shown from the results of atomic absorption spectroscopy by recording copper metal in the product and reducing magnesium metal concentration. UV-vis spectra of chlorophyll in methanol show a characteristic band in the dark area (Soret band) at a maximum wavelength of 404 nm and the visible area (Q band) with the strongest intensity at 665 nm. These peaks appear to shift hypsochromically in the copper (II)-chlorophyll compound to 397 nm and 650 nm with higher absorptivity, indicating a change in the electronic transition of the chlorophyll after coordinating with the copper (II) ion. A new peak at 411 nm was also observed which is suggested to indicate that the copper (II) -chlorophyll complex is in an octahedral geometry in the aggregate coordinated via nitrogen atoms in the phyrol ring in place of the magnesium (II) ion.
ADSORPSI ASAM LEMAK BEBAS DALAM MINYAK SAWIT MENTAH MENGGUNAKAN ADSORBEN ABU TANDAN KOSONG SAWIT Syahwandi, M; Rahmalia, Winda; Zahara, Titin Anita; Usman, Thamrin
Indonesian Journal of Pure and Applied Chemistry Vol 2, No 3 (2019)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v2i3.36894

Abstract

Research on the use of the oil palm empty fruit bunch (OPEFB) as an adsorbent for free fatty acid (FFA) adsorption on Crude Palm Oil (CPO) has been done. CPO is the main raw material in the manufacture of food products. The results of OPEFB adsorbent characteristics showed the amount of water content and ash content of 0,067% and 0,175%, XRF analysis obtained the greatest content of OPEFB in the form potassium metal as much as 44,24%, FTIR analysis identified that there were CO3 compounds in wave number 1648 cm-1 and SEM analysis indicates there are no pores in OPEFB. The result showed that the number of OPEFB with the best adsorption was 0,1 gram with 60 minute optimum contact time. The CPO adsorption process with OPEFB shows the Langmuir model with a correlation value (R2) of 0,8845 and the adsorptions kinetics follows the pseudo order 2 adsorption kinetics model with a correlation value (R2) of 0,9857. The results of this study showed the characteristics of CPO before and after adsorbed using 0,1 g of adsorbent OPEFB showed the amount of FFA level of 7,321% to 6,297%, water content of 0,0025% to 0,00119% and impurities content of 0,8847% to 0,8408%.
PENINGKATAN KUALITAS MINYAK JELANTA MENGGUNAKAN KARBON AKTIF DAN EKSTRAK PUCUK IDAT (Cratoxylum glaucum) Mahardika, Robby Gus; Enggiwanto, Sito; Samsiar, Ary
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 1 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v1i1.26039

Abstract

Silica Waste cooking oil can be used as a soap or biodiesel. Good soaps or biodiesel should be from oils that have low levels of fatty acids and free radicals. However, waste cooking oil has high free fatty acid and free radical, it is necessary to increase the quality of waste cooking oil. One effort to improve the quality of waste cooking oil can use activated carbon as an adsorbent. Decrease in free radicals in cooking oil can use antioxidants from extract pucuk idat (Cratoxylum glaucum). This study aims to see the effect of extract pucuk idat on the process of improving the quality of waste cooking oil. The process of improvement by adding activated carbon and varying the concentration of ethanol extract pucuk idat. Activated carbon used 10% with variation of extract 0,25%; 0,5% and 0,75%. This process followed by stirring for 15 minutes at 80°C, then soaked for 3 days. Oil quality are identified by the method of determining the levels of free fatty acids and acid numbers. The results of this study indicate that extract pucuk idat in ethanol with 0,75% concentration has the lowest free fatty acid and acid number. Extract pucuk idat can improve the quality of waste cooking oil.
KOMPOSISI UNSUR DAN KARAKTERISTIK MINERAL PASIR PUYA DARI SINTANG, KALIMANTAN BARAT (ELEMENT COMPOSITION AND MINERAL CHARACTERISTIC OF PUYA SAND FROM SINTANG, WEST KALIMANTAN) Agustina, Duwan; Nofiani, Risa; Silalahi, Imelda H
Indonesian Journal of Pure and Applied Chemistry Vol 4, No 1 (2021)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/ijopac.v4i1.45758

Abstract

Puya sand is a byproduct from local gold mining activities found in Sintang, West Kalimantan. Puya sand is usually left by the miners after the mining activity leaving a pile of abandoned sands. Mineral characterisation conducted by using XRD and XRF methods demonstrated that the sand contains valuable elements and mineral, i.e. zircon silicate, quartz and ilmenite. A simple physical flotation separation method removed quartz remaining material containing concentrated zircon silicate. XRD analysis by using Search-Match followed by amount calculation by using Rietveld refinement showed that the sand consists of zircon silicate (58.3%), ilmenite (35.2%) and anatase (6.5%). Elemental analysis by using XRF presented the percentage of Zr, Ti, Fe and Si is 41.0, 23.9, 13.06 and 8.3, respectively. Hafnium with 1.5% was also observed along with Th, U and rare earth elements (REEs), such as Nd, Y, Eu, and Yb.
UJI KELARUTAN LOGAM DARI TAILING TIMAH MENGGUNAKAN PELARUT EUTEKTIK BERBASIS KOLIN KLORIDA DAN ASAM p-TOLUENASULFONAT Kusdayanti, Nimas Ade; Rahmalia, Winda; Usman, Thamrin
Indonesian Journal of Pure and Applied Chemistry Vol 2, No 2 (2019)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v2i2.36906

Abstract

Deep eutectic solvents (DES) are defined as combinations of two or three components which are able to establish hydrogen bond interactions with each other to form an eutectic mixture, that have a melting point lower than that of the each individual component. This study aims to determine the characteristics of DES based on choline chloride (ChCl) as quaternary ammonium salts and p-toluenasulfonic acid (PTSA) as hydrogen bond donors and to investigate their selectivity for dissolving metals in tin tailings. Synthesis of DES was carried out by mixing ChCl and PTSA with variations of the mole fraction, then stirring at 80 oC for 15 minutes. Resulted products were characterized their freezing point, density, viscosity, conductivity and functional groups. Mixture with a mole fraction of ChCl 0.6 formed homogeny clear liquid. It has a freezing point of 8 oC, density of 1.207 g/mL, viscosity of 4.663 cP, and conductivity of 182.4 mS/cm. Based on fourier transform infrared (FTIR) analysis, the interaction between ChCl and PTSA was due to the formation of hydrogen bonds between the O atoms of PTSA and the H atoms of ChCl. Inductively coupled plasma atomic emission spectroscopy (ICP-AES) analysis showed the presence of 1962 ppm of Fe metal dissolved in DES. This value was significant greater than the presence of other metals in the DES.
DETEKSI KEBERADAAN BAKTERI RESISTEN LOGAM MERKURI (Hg) PADA PENAMBANGAN EMAS TANPA IZIN (PETI) DI SIMPI, SEKADAU, KALIMANTAN BARAT Abdullah, Abdullah
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 2 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v1i2.30529

Abstract

The purpose of this research is to know the existence of mercury metal degradation bacteria in the activity of illegal gold mining (PETI) in Simpi Village, Belitang Hilir sub-district, Sekadau District, West Kalimantan. The samples were taken from one location with three different sampling points. Isolation of bacteria by pour plate method  in NA-HgCl medium. Detection of bacteria by paper disc method based on inhibit zone resistant of  Mueller-Hinton Agar (MHA) with mercury levels such as 10 mg/L, 20 mg/L and 30 mg/L . The results showed that it was found that one pure isolate (PP) showed the most resistant isolate to the mercury stress of 10 mg/L can be detected
SINTESIS DAN AKTIVITAS ANTIKANKER SENYAWA C-4-ALILOKSI-3-METOKSIFENILKALIKS[4]RESORSINARENA Sayekti, Endah; Jumina, Jumina; Siswanta, Dwi; Mustofa, Mustofa
Indonesian Journal of Pure and Applied Chemistry Vol 3, No 1 (2020)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/ijopac.v3i1.46505

Abstract

The aims of this study was to synthesize of C-4-alyloxy-3-methoxyphenylcalix[4]resorcinarene (3). The syntheses was conducted  by condensation reaction of resorcinol with 4-allyloxy-3-methoxybenzaldehyde (2) in ethanol with hydrochloric acid as a catalyst. The (2) compound was synthesized by the reaction of the 4-hydroxy-3-methoxybenzaldehyde (vanillin) (1) via allylation reaction using an allylbromide with the sodium metal as a catalyst in ethanol. A (3) compound was orange solid. m.p. of 176–177 °C (dec.). Yield (78%). FTIR (KBr, ν; cm-1): 3441 (-OH); 3086 and 3008 (Csp2-H); 2939 (Csp3-H ); 1612 (C=C aliphatic); 1512 (C=C aromatic); 1427 (>CH- methine); 1234, 1211, 1080 and 1018 (C-O-C asymmetric); 925 (C=CH2 terminal). 1H-NMR (DMSO-d6; 500 MHz) δ (ppm): 8,50 (8H, s, OH); 6.43 (4H, s, ArC-H); 6,36-6,38 (4H, d, J=10 Hz); 6.32 (4H, s, ArC-H); 6.26-6.28 (4H, d, J=10 Hz); 6.13 (4H, s, ArC-H); 6.00-6.05 (4H, m, =C-H); 5.38-5.40 (4H, d, J=10 Hz); 5.31 (4H, s, >C-H methine); 5.16-5.18 (4H, d, J=10 Hz); 4.34-4.36 (8H, d, J=10 Hz); 3.29 (12H, s, -OCH3). 13C-NMR (DMSO-d6; 500 MHz) dC (ppm): 33 (4 x CH methine);  55 (4 x CH3); 69 (4 x CH2-); 101 (4 x ArC-H); 112 (4 x ArC-H); 113 (4 x ArC-H); 116 (4 x =CH allyl terminal); 120 (4 x ArC-H); 122 (8x ArC-); 132 (4 x ArC-H); 134 (4 x =CH allyl); 137 (4 x ArC-); 145 (4 x ArC-O); 148 (4 x ArC-O); 152 (8 x ArC-OH). MS (ESI) m/z: 1137.5 (M+). Anticancer evaluation was performed on (3) compound by MTT (3-(4,5-dimethyltiazole-2-yl)-2,5-diphenyltetrazolium bromide) method showed that (3) compound has a cytotoxic activity against HeLa and T47D cells which IC50 value respectively are 13,58 and 65,26 µg/mL.
ENKAPSULASI FRAKSI N-HEKSAN DAUN KESUM (Polygonum Minus Huds) TERSALUT Carboxymethylcellulose (CMC) DAN PATI DAN UJI AKTIVITAS ANTIOKSIDAN DENGAN TEKNIK FREEZE DRYING Fitriani, Fitriani; Wibowo, Muhammad Agus; Alimuddin, Andi Hairil
Indonesian Journal of Pure and Applied Chemistry Vol 2, No 1 (2019)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v2i1.36945

Abstract

Kesum have a scientific name Polygonum Minus Huds is one of the endemic plants originating from West Borneo.  Extracts of kesum leaf is easily damaged and the compounds contained therei are volatile. Therefore it is necessary to take measures to protect the extracts of kesum leaf. One effort that can be made to im exprove the stability of the compounds in the extract is by the process of encapsulation. This process needs to be done so that the leaf extract can last longer so it can be used for various purposes. Encapsulation aims to protect sensitive material components and reduce the degradation of the active compounds in the material. This study aims to determine the effect of mass of core materials on the efficiency of encapsulation and antioxidant activity and the effect of temperature on encapsulation. The results showed that the encapsulated with the mass of core material 10% gave the highest efficiency of 89.7%. The mass of the core material affects the encapsulation efficiency, the less the core material will provide a high value of encapsulation efficiency. Enkapsulates containing n-heksan fractions of 444.53 ppm have a lower value IC50, thus having better antioxidant activity properties. The stability of the encapsulated antioxidant activity performed at room temperature 25◦C at 10% n-hexane fraction yielded 88.36% ihibisi on day 1, 80.90% on day 3, 79.67% on day 6 and 78.04% on day 9. Activity the antioxidant encapsulant on the first day at room temperature 25◦C is better than the third, sixth and ninth days. SEM leaf extract analysis results have uneven spherical particles, no visible fracture or pore holes as large as encapsulation have round particles that are almost as large.
SINTESIS DAN STUDI STABILITAS NANOPARTIKEL PERAK TERTUDUNG ASAM SALISILAT Ridwan, Rizky Noviani; Gusrizal, Gusrizal; Nurlina, Nurlina; Santosa, Sri Juari
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 3 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/indonesian.v1i3.34195

Abstract

Silver nanoparticles capped with salicylic acid have been synthesized by reduction of silver nitrate with salicylic acid without additional capping agent. In the formation of silver nanoparticles, the solution of silver nitrate was first mixed with the pH 11 salicylic acid solutions at a mole ratio of 1:40. The mixture was heated for 45 minutes in a boiling water bath. The formation of silver nanoparticles was indicated by the appearance of yellow color and monitored using UV-Vis spectrophotometer. The maximum peak of resulted silver nanoparticles appeared in the range of 410-420 nm with the average size of particles was 66±28 nm. Stability test over a period of 16 weeks showed that silver nanoparticles capped with salicylic acid were stable. The results of stability test show that salicylic acid simultaneously act as reducing as well as capping agent in the formation of silver nanoparticles.