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INDONESIA
Indonesian Journal of Pure and Applied Chemistry
ISSN : 26208571     EISSN : 2620858x     DOI : -
Core Subject : Science,
Indonesian Journal of Pure and Applied Chemistry (IJoPAC) is a Scientific Journal published by Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Tanjungpura, Indonesia with a frequency of 3 times each year, every April, July, and October. The IJoPAC receives manuscripts (research article, mini review/review, short communication) encompassing a broad range of chemistry research particularly physical chemistry, organic chemistry, analytical chemistry, inorganic chemistry, biochemistry, and applied chemistry.
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Articles 16 Documents
KINETIKA DEGRADASI SELULOSA ASETAT DARI SABUT PINANG Syahbanu, Intan; Anugraini, Annisa; Melati, Husna Amalya
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 1 (2018): Vol 1, No 1 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (297.235 KB) | DOI: 10.26418/indonesian.v1i1.26040

Abstract

Cellulose Acetate is a material with wide range in applications. Cellulose acetate may obtain from natural resources, such as areca fiber. Polymers should have uniform molecular weight for the applications and could be modify by ultrasonic waves. Ultrasonic treatment on polymer entangled with polymer degradation. In this research, degradation kinetics of cellulose acetate in acetone had been studied. Analysis was performed by determination of intrinsic viscosity in polymer solution system.  Intrinsic viscosity was successfully obtained by fitting data using Huggins equation, indicate molecular interaction in polymer solution should not be neglected.  Increasing in sonication time reducing the intrinsic viscosities as well as molecular size in solutions.  Degradation rate constant and reaction order were obtained 5,975x10-3(g.mL-1)0,1.min-1 and 1,0616, respectively.  Kinetics model was successful to determine the degradation rates of cellulose acetate on acetone by correlation coefficient (R2) at 0,966.
EKSTRAKSI DAN PENENTUAN GUGUS FUNGSI ASAM HUMAT DARI PUPUK KOTORAN SAPI Nurlina, Nurlina; Syahbanu, Intan; Tamnasi, Mirna Tersiana; Nabela, Chyntia; Furnata, Maria Desi
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 1 (2018): Vol 1, No 1 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (248.923 KB) | DOI: 10.26418/indonesian.v1i1.26041

Abstract

Cow manure fertilizer was used as raw material for the extraction of humic acid in this research. The aim of this research were  extraction of humic acid from cow manure fertilizer, characterization of functional groups based on FTIR spectra, and determination of humic acid functional groups. Humic acid extraction from cow manure used 0.050 M; 0.100 M; 0.250 M dan 0.500 M KOH solution. A cow manure fertilizer were shaken with KOH solution for 1; 2; 4 and 6 h. The quantitative determination of oxygen-containing functional groups of humic acid was conducted by titrimetri. The FTIR spectrum showed the presence of  –OH group and N-H stretching (bands 3361.46 cm-1); C-H aliphatic for CH2, CH3 (2946.52 cm-1 and 1442.24 cm-1); C=C aromatic components (1626.48 cm-1); COO- symmetric stretching (1521.71 cm-1); C-O stretching from –COOH (1229.74 cm-1). Total acidity value was 500 cmole.kg-1 (Baryta Absorption Method); carboxyl groups content was 250 cmole.kg-1 (Ca-Acetate Method); and phenol (OH) concentration was 250 cmole.kg-1. It can be concluded that humic acid successfully extracted from cow manure fertilizer using 0.250 KOH solution as extractant for 2 h, which has  yield of 4.486% humic acid.
SINTESIS DAN KARAKTERISASI SILIKA GEL DARI LIMBAH KACA SERTA APLIKASINYA PADA KROMATOGRAFI KOLOM Fabiani, Verry Andre; Wahyuni, Nelly; Brilliantoro, Ridho; Safitri, Mellisa Nurul
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 1 (2018): Vol 1, No 1 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.94 KB) | DOI: 10.26418/indonesian.v1i1.26038

Abstract

Silica gel synthesis from glass waste have been carried out with activation and purification method by using hydrochloride acid. Hydrochloride acid were varied 8 N, 10 N, and 12 N to observe optimum concentration in purification of silica gel and component separation in chromatography column. Gravimetric analysis result showed 12 N hydrochloride acid produce ~100 % silica. XRD and FTIR analysis revealed that synthetic gel silica was amorphous where its IR absorption bands were at 3426 cm-1, 1620 cm-1, 1080 cm-1, 772 cm-1 and 478 cm-1. The absorption bands agreed to standard gel silica and spectrum. The most effective HCl in gel silica synthesis was 12 N, caused by its ability to separate color component in a column. The synthetic silica that can be applied as stationary phase in column chromatography.
ANALISIS UKURAN PARTIKEL SILIKA HASIL EKSTRAKSI DARI BATU PADAS ASAL KABUPATEN KETAPANG KALIMANTAN BARAT Sasri, Risya; Nurlina, Nurlina; Destiarti, Lia; Syahbanu, Intan
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 1 (2018): Vol 1, No 1 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (228.15 KB) | DOI: 10.26418/indonesian.v1i1.26042

Abstract

Analysis of particle size of silica was extracted from rocks from Ketapang Regency, West Kalimantan based on characterization using scanning electron microscope (SEM) have been carried out. The analysis was performed to determine the particle size change in extraction silica without and with activation using acid solution. SEM image processing was performed on a 10 μm scale at 350x magnification through the image-J software to determine the particle size distribution. The results of the analysis showed that the area and diameter of the silica particle extracted from rocks were 3,935 μm2 and 3,147 μm (without activation) and 4,28 μm2 and 3,267 μm (activated) respectively.
AMPLIFIKASI PCR DOMAIN D1/D2 28S rDNA MENGGUNAKAN PRIMER ITS1 DAN ITS4 SAMPEL DNA DARI Candida tropicalis YANG DIISOLASI DENGAN METODE PENDINGINAN Hermansyah, Hermansyah; Sutami, Novian; Miksusanti, Miksusanti
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 1 (2018): Vol 1, No 1 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (274.548 KB) | DOI: 10.26418/indonesian.v1i1.26037

Abstract

The purpose of this research was to isolated DNA from the yeast C. tropicalis with freeze thawing method -200 C conducted on 3 colonies of C. tropicalis.  Each colony   threated variations of cooling, 3x15 minutes, 3x25 minutes and 3x35 minutes, to break the cell walls.  Subsequently all the samples amplified with 3 variations of PCR cycles, 15 cycles, 25 cycles and 35 cycles, after all of the samples isolated by freeze thawing method -200 C. Its was known that sample A15 has the smallest concentration of DNA yeast C. tropicalis, ie 50 µg/mL, while sample C35 had the largest concentration of DNA yeast C. tropicalis, ie 225 µg/mL. The result of the research indicated that the best condition can be reached in 3x35 minutes. On 35th cycle has clearer C. tropicalis DNA bands than the 25th and 15th PCR cycle. C. tropicalis DNA bands at 35th cycles there were 7 DNA bands were detected and bright bands on a long 35 minutes cooling. In the 25th and the 15th cycle, there was no DNA bands were detected in all samples. Based on the results obtained, the amplification process must be carried out at least 35 times cycles so that the C. tropicalis DNA bands can be detected.
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): Vol 1, No 1 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.586 KB) | 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.
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE TEAMS GAME TOURNAMENT (TGT) BERBANTUAN MEDIA MOLYMOD PADA MATERI HIDROKARBON KELAS X SMA NEGERI 4 SINGKAWANG Pratiwi, Dewi; Muharini, Rini
Jurnal Pendidikan Matematika dan IPA Vol 1, No 2 (2010): Vol. 1 No.2 Juli 2010
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (307.109 KB) | DOI: 10.26418/jpmipa.v1i2.200

Abstract

The aim of this research is to know the effect of cooperative learning model, Teams Game Tournament (TGT) type, toward students achievement on hydrocarbon material, class X SMA Negeri 4 Singkawang. A quasi experimental method using pre-posttest control group design was implemented in this research. Data collecting tool used is essay test which has realibility of 0,59. Intact group random sampling technique was taken to get XA and XB classes as samples. Based on their daily chemistry examination, class XA was picked up as control class and XB was experiment class. U Mann Whitney test on students pretest showed no significantly difference between control and experiment class (Zhitung = -1,15, Ztabel = 1,96, ?=5%). Meanwhile, U Mann Whitney test on students posttest indicated significant difference between experiment and control class (Zhitung = -2,54, Ztabel = 1,96, ?=5%). The calculation of effect size resulted on posttest was 0,64 (23,89%). It showed that cooperative learning model TGT type gives intermediate level of effect size toward students achievement.Keywords: students achivements, cooperatif learning, Teams Game Tournament model, Hydrocarbons
ANTIFUNGAL ACTIVITY OF METHANOL EXTRACT OF BLACK CUMIN SEEDS ON Aspergillus sp. Rahman, Lia Utami
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 2 (2018): Vol 1, No 2 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (559.084 KB) | DOI: 10.26418/indonesian.v1i2.30526

Abstract

Aspergillus sp. is a type of pathogenic fungus and can cause pulmonary aspergillosis. This research aims to determine the concentration of methanol extract from black cumin (Nigella sativa) seeds which effective to inhibit the growth of Aspergillus sp. (RMPRB2). This research used poisoned food method with Completely Randomized Design consisting of six treatments with four replications. The results showed that the methanol extract of Nigella sativa seeds could inhibit the growth of fungal isolates from Aspergillus sp. (RMPRB2). The Methanol extract of Nigella sativa with a concentration of 2% and the positive control gave a strong inhibitory activity to the growth of Aspergillus sp. (RMPRB2) with a percentage of 100%. Concentration of 1% is the most effective result because gave a very strong inhibitory activity to the growth of fungal isolates of Aspergillus sp. (RMPRB2).
GREEN SYNTHESIS NANOPARTIKEL PERAK MENGGUNAKAN EKSTRAK DAUN PUCUK IDAT (Cratoxylum glaucum) SEBAGAI BIOREDUKTOR Fabiani, Verry Andre; Sutanti, Febry; Silvia, Desti; Putri, Megawati Ayu
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 2 (2018): Vol 1, No 2 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (615.449 KB) | DOI: 10.26418/indonesian.v1i2.30533

Abstract

An environment friendly technique for green synthesis of silver nanoparticles has been reported. Silver nanoparticle have been synthesized using water extract of leaves of pucuk idat (Cratoxylum glaucum), commonly known as local Bangka plant. The flavonoid and tannin present in the extract act as reducing agent. AgNO3 0,05 M solution was reducing using the extract at room temperature by stirring. Color changing of the solution was detected at 30 minutes reaction time. The color tends to be darker by the increasing of reaction time. Various techniques used to characterize synthesized nanoparticles are UV-Visible spectrophotometer, x-ray diffraction (XRD) and scanning electron microscopy (SEM). UV-Visible spectrophotometer showed absorbance peak in 405 nm, the XRD shows that silver nanoparticles formed are crystalline. The average particle size of Ag nanoparticles estimated from the Scherrer formula is 35,59 nm, while SEM image shows shape of silver nanoparticle is random and some spherical shape.
PHYTOCHEMICAL SCREENING, ANTIOXIDANT, AND CYTOTOXICITY OF Zamioculcas zamiifolia ROOT EXTRACT Muharini, Rini; Masriani, Masriani; Rudiyansyah, Rudiyansyah
Indonesian Journal of Pure and Applied Chemistry Vol 1, No 2 (2018): Vol 1, No 2 (2018)
Publisher : Tanjungpura University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (577.788 KB) | DOI: 10.26418/indonesian.v1i2.30530

Abstract

Zamioculcas zamiifolia is an ornamental plant that had been used pharmacologycally as a traditional medicine plant. The aims of this research were to investigate the phytochemistry of n-hexane, chloroform and methanol extracts from the roots of Z. zamiifolia and to evaluate their biological activities as antioxidant and cytotoxic. All extracts were screened phytochemically using specific reagents and TLC technique to reveal the major component of each extract. The chloroform was obtained as the highest quantity of extract which gave positive test for steroids and flavonoids. All extracts were tested for their antioxidant activity using DPPH method and for their cytotoxic activity against two types of human cancer cell lines, HepG2 and T47D, and normal African green monkey kidney ephitelial cell lines, Vero. The methanol and chloroform extract exhibited antioxidant activity with  AA50 values of 180.0 and 431.5 µg/mL, respectively. Chloroform and methanol extracts showed potencial and moderate cytotoxicity towards T47D cell line with IC50 433.1 and 461.1µg/mL, respectively. None of the extracts was toxic against HepG2 and Vero cell lines.

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