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Al-Kimia
Published by Universitas Islam Negeri Alauddin Makassar
ISSN : 23022736     EISSN : -     DOI : -
Core Subject : Science,
Chemistry
Al-Kimia is a journal of chemistry that published by Department of Chemistry, Faculty of Science and Technology UIN Alauddin Makassar. The journal is published twice a year on January-June and July-December. This journal encompasses original research articles in all aspects of chemistry and related area. The journal, which was firstly published in July 2013, is a forum for communication of research results, review the results of research, methodologies and new approaches in research related to chemistry in Indonesia.
Arjuna Subject : -
Articles 238 Documents
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Aplikasi Membran Filter Keramik Untuk Menurunkan Konsentrasi Zat Warna Remazol Red dan Nilai COD Limbah Cair Batik Nur Fitriana; Maya Rahmayanti
Al-Kimia Vol 8 No 2 (2020): DECEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v8i2.15932

Abstract

Research on the application of ceramic filter membranes in reducing remazol red dye concentration and COD value of batik liquid waste has been carried out. The purpose of this study was to reduce the remazol red dye concentration and the COD value of batik wastewater using a ceramic filter membrane. The ceramic filter membrane used was made from clay and silica sand with variations in the number of additions of wood sawdust as much as 0, 1, 3, 5 and 7%. Then the porosity of the ceramic filter membrane was tested to determine the percentage of the pore volume that the ceramic filter membrane had. The ceramic filter membrane with the composition of clay, silica sand and 1% wood sawdust was the most optimum in reducing remazol red dye up to 86.68% and reducing COD value up to 97.87%. Keywords: filtration, remazol red, COD, ceramic filter membranes, batik liquid waste 
Antituberculosis Activity Test of N-p-Methylbenzyl-p-coumaramide (MBC) Against M. tuberculosis H37Rv Nasriadi Dali Wela; Arniah Dali Wela; Seniwati Dali; Hilda Ayu Melvi Amalia
Al-Kimia Vol 8 No 2 (2020): DECEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v8i2.10761

Abstract

An antituberculosis activity test of N-p-Methylbenzyl-p-coumaramide (MBC) against M. tuberculosis H37Rv has been carried out. The purpose of this study was to determine the antituberculosis activity of MBC against M. tuberculosis H37Rv. The study was conducted using agar diffusion method. The test solution was prepared by dissolving MBC in 20 mL Ogawa medium to a final concentration of 0.25; 0.50; 1; and 2 mg/L. PDA media that had been inoculated with M. tuberculosis H37Rv (seeded agar) were poured over the base layer on the petridish surface. Paper disks that have been immersed in the test solution were put symmetrically on the seeded agar. Furthermore, the seeds were incubated at 37 oC for 48 hours. Then the diameter of the inhibition zone was measured to the accuracy of 0.5 mm with a ruler. The results showed that MBC has biological activity as an antituberculosis. MBC can inhibit the growth of M. tuberculosis H37Rv at a concentration of 0.25; 0.50; 1; and 2 mg/L with a diameter of inhibitory zones respectively 8.9; 13.7; 18.5; and 21.3 mm. This showed that the inhibition of MBC on the growth of M. tuberculosis H37Rv increased with increasing concentration of MBC used.
Deasetilasi Kitin Cangkang Rajungan (Portunus pelagicus) Menjadi Kitosan Menggunakan Iradiasi Microwave Robby Gus Mahardika; Muhammad Jumnahdi; Yekti Widyaningrum
Al-Kimia Vol 8 No 2 (2020): DECEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v8i2.7999

Abstract

The crab shell (Portunus pelagis) is still an untapped waste, especially on Bangka Island. Actually, this shell has a high value because there is chitin and chitosan. Chitosan is a biopolymer which has recently been developed into adsorbents, membranes and edible films. The deacetylation process of chitin will be the key to the quality of chitosan produced. Therefore, the purpose of this study is to see the effect of the chitin deacetylation process into chitosan using a microwave. Microwave deacetylation process is carried out with various time variations at 1200 W and 100oC. Characterization and degree of deacetylation (DD) of chitosan crab were analyzed by Fourier Transform Infrared (FTIR) spectroscopy. The results showed that deacetylation using conventional methods for 120 minutes at a temperature 100oC had DD 76.67% while deacetylation using microwave for 40 minutes at a temperature of 100oC had a DD  77.89%. Microwave deacetylation is three times faster than conventional methods.
Active Compounds Of Ethyl Acetate Extract Of Stylotella Sp. Sponges From Selayar Islands Against Mcf-7 Breast Cancer Cells Asriani Ilyas; Sahyuni Hamzah; Firnanelty Firnanelty; Titik Andriani
Al-Kimia Vol 8 No 2 (2020): DECEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v8i2.12840

Abstract

Stylotella sp. sponge is a type of marine invertebrate animals that are widely distributed in Indonesian marine areas. One of the spreading areas of the Stylotella sp. sponge is in the Selayar Islands, South Sulawesi, Indonesia. Sponges have potential as a drug because they contain secondary metabolites. The aim study was to identify the types of secondary metabolite compounds and determine the bioactivity of Stylotella sp. compounds against MCF-7 breast cancer cells. The extraction method was used in the process of obtaining isolates because it is easy and economical. Testing the level of purity of isolates was carried out with three eluent systems which showed a single stain result. FTIR characterization results showed that pure isolates contained alkaloids which were characterized by the appearance of O-H, C-N, and C-H groups. The activity of MCF-7 cells using the colorimetric method showed an IC50 value of 14987.50 µg / mL, not toxic.
Determination of Ascorbic Acid Content using the Reverse Phase–High Performance Liquid Chromatography (RP-HPLC) Method Nurul Ismillayli; Dhony Hermanto; I. G. A. Sri Andayani; Ruru Honiar; Ulul Khairi Zuryati; Baiq Mariana; Linda Marta Shofiyana
Al-Kimia Vol 8 No 2 (2020): DECEMBER
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v8i2.15097

Abstract

A method of reverse phase-high performance liquid chromatography (RP-HPLC) was evaluated in ascorbic acid determination. The determination was conducted at optimum conditions for RP-HPLC method, including ethanol as mobile phase, flow velocity of 0.8 mL/min, running time of 5 minutes, injection volume of 10 µL, UV detector, wavelength of 245 nm with internal standard of ascorbic acid in metaphosphate-acetic acid. Result of measurement was validated by AOAC Official Method 967.21. It was obtained that RP-HPLC method was high sensitive and precision method due to its limit of detection was 0,5 µg/mL and  RSD  was ≤ 2%. The results of the determination of vitamin C content in fresh ceruring fruit using RP-HPLC method and the titrimetry method namely, 52.9057 ± 0.17 and 54.2066 ± 0.87 mg in 100 g sample, respectively. Based on statistical analysis (t-test), there were no significant differences for the two methods used. The percentage of recovery obtained is excellent in the range of 97.9-104.3%. Therefore, the RP-HPLC method is expected to be an accurate method for routine analysis of vitamin C. Key word: ascorbic acid, reverse phase, HPLC, titrimetric. 
Optimalisasi Penentuan Logam Cu(II) Mengunakan Metoda Voltammetri Stripping Adsorptif (VSAd) Hilfi Pardi; Nancy Willian
Al-Kimia Vol 9 No 1 (2021): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v9i1.18273

Abstract

Copper is an essential heavy metal, but if in concentrations that pass the threshold and accumulate in the body, it will be toxic which can cause various diseases. One of the methods for determining Cu(II) metal is the Adsorptive stripping voltammetry (VSAd). This research is to determine the metal using voltammetry stripping Adsorptive (VSAd) in samples of river water and sea water. To obtain maximum results in this method, it is necessary to have optimum conditions for various ligands (chalcone, 2,2' Bipyridine, 8-Hydroxyquinoline, Ammonium pyrrolidinedithiocarbamate) for potential accumulation , accumulation time, pH and optimum ligand concentration, as well as determining the accuracy and precision of the method used by determining the relative standard deviation (SDR) value, as well as the recovery value. The results obtained were chalcone as the optimum ligand, the optimum accumulation potential was -0.1 V, the optimum accumulation time was 60 seconds, the optimum solution pH was 6, and the optimum chalcone concentration was 0.5 mM. The relative standard deviation value is 4.27%, the recovery value is 98.31%. The application of the VSAd method to water samples resulted in the concentration of Cu(II) metal in the Batang Air Sidingin Padang river sample, which was 4.778 g/L and the estuary of Padang which was 5.189 g/L.
Pemilihan Monomer Fungsional Terbaik Dalam Molecularly Imprinted Polymer (MIP) Monogliserida Lard Menggunakan Metode Komputasi Adi Syahputra; Nurhadini Nurhadini; Fajar Indah Puspitasari
Al-Kimia Vol 9 No 1 (2021): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v9i1.10893

Abstract

Pemilihan monomer fungsional yang cocok dan dianggap relatif cukup baik selektivitasnya dalam pembuatan MIP dapat dilakukan dengan bantuan komputer (computer aided) untuk mengurangi trial and error. Dimana molekul target (template) dan monomer fungsional dimodelkan dalam bentuk 3D menggunakan software ChemBio Ultra 12 selanjutnya diinteraksikan  menggunakan software AutoDock Tools 1.5.6 dan Pyrx untuk melihat binding interaction yang terjadi dan binding energy serta kemiripan sifat polaritas yang secara teoritis dapat memberikan informasi sebelum dilakukan sintesis MIP. Seleksi monomer fungsional secara bertahap dilakukan berdasarkan ada tidaknya binding interaction, tahap berikutnya dilihat berdasarkan binding energy yang paling besar (negatif) dan terakhir adalah momen dipol. Berdasarkan data tersebut monomer fungsional terpilih adalah molekul Benzo-15-crown-5-acrylamide dengan binding Interaction berupa ikatan hydrogen serta nilai binding energy dan momen dipol paling besar.
Kajian in Silico Aktivitas Antioksidan Senyawa Bioaktif dalam Minyak Serai (Cymbopogon citratus) Dewi Ratih Tirto Sari; Yohanes Bare
Al-Kimia Vol 9 No 1 (2021): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v9i1.18986

Abstract

stress oxidative is a factor promoting metabolic syndrome and other diseases. oxidative stress could be minimalized by exogen and endogen antioxidants. Essential oil from Cymbopogon citratus extract have potential activities as anti-inflammatory and relaxing. This study determined the potential activity as antioxidant through kelch ECH associating protein 1 (KEAP1) inhibition. Four phytosterol compounds from Cymbopogon citratus essential oil, including 3,7-dimethyl-1,3,6-octatriene, decanal, elemol, dan selina- 6-en-4-ol, were downloaded from PubChem database. four compounds were docked with KEAP1 protein and analyzed using Discovery studio ver. 19.0.0.  3,7-dimethyl-1,3,6-octatriene, decanal, elemol, and selina-6-en-4-ol bound to KEAP1 in certain amino acid residues with hydrophobic interaction and hydrogen bond. Interestingly, 3,7-dimethyl-1,3,6-octatriene proved five hydrophobic interaction, higher than decanal and selina-6-en-4-ol. The elemol, and selina-6-en-4-ol interacted with KEAP1 showing lower binding affinity and tight interaction. This study suggested that 3,7-dimethyl-1,3,6-octatriene, decanal, elemol, and selina-6-en-4-ol promoted antioxidant activity. 
Potensi Kayu Apu (Pistia stratiotes) di Perairan Danau Tempe Kabupaten Wajo, Sulawesi Selatan sebagai Agen Fitoremediasi terhadap Ion Logam Cu2+ Muhammad Nasir; Dingse Pandiangan; Susan Marlein Mambu; Muhummad Nur; Siti Fauziah; Nur Insani Amir; Rizal Irfandi; Sahriah Rahim
Al-Kimia Vol 9 No 1 (2021): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v9i1.17969

Abstract

Lake Tempe is a technical lake that stretches across three districts in South Sulawesi, namely Wajo Regency, Sidendang Rappang Regency and Soppeng Regency. Because of its vastness, people use the lake for various activities, one of which is the textile industry. The textile industry uses a lot of chemicals which are then dissolved in water. These materials contain suspended solids, organic substances and heavy metals. The washing stage is the final process of the textile industry. The waste product is liquid waste containing heavy metals, including copper (Cu). To reduce or remove Cu metal found in Tempe Lake, phytoremediation techniques are used. Phytoremediation is an effort made to remove hazardous substances in areas contaminated with waste by using plants that have phytoremediator properties. Water plants that can be used are apu wood (Pistia stratiotes). The purpose of this study was to determine the ability of apu (Pistia stratiotes) to remediate Cu2 + in contaminated Lake Tempe water. The research method used included: Cu2+ assay, physicochemical analysis, Bio-Concentration Factor (BCF) and identification of functional groups. The greatest adsorbed Cu metal ion on apu wood is on the 10th day of 100,274 mg / Kg. 
Sintesis Ferri Salen-Taeniolit Sebagai Katalisator Pada Reaksi Pembentukan Monomer Poli Karbonat Alimuddin Alimuddin; Agusriyadin Agusriyadin; Syahrir Syahrir; Laode Abdul Kadir
Al-Kimia Vol 9 No 1 (2021): JUNE
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/al-kimia.v9i1.10768

Abstract

The researcher has succeeded in synthesizing the Ferri Salen-Taenolite complex as a clay based catalyst and applying it to the reaction of glycerol carbonate formation. Lewis acidity of the catalyst complex can increase through the immobilization process in addition, the activity and selectivity of the catalyst also increase. The formation of salene ligands is shown by the appearance of the peak C=N at the wave number around 1640 cm-1 and the O-H peak around 3400 cm-1. The formation of the Fe(salen)NO3 complex is indicated by the reduction of the vibration intensity O-H at the wave number of about 3400 cm-1 and the shift of the peak C=N in the area around 1640 cm-1 to 1690 cm-1. The complex [Fe(salen)]NO3 has been synthesized with physical properties in the form of brown powder and effective magnetic moment by 2,197 BM. The complex [Fe(salen)] + was successfully immobilized into the LiTN as much as 9.12 mmol/g LiTN. Based on the catalytic activity test, the catalyst was active in the reaction of polycarbonate monomer formation which is indicated by a change in vibration of the urea carbonyl (CO amine) group at wave number 4242 cm-1 to vibrate the carbonyl group (CO ester) at wave number 1786 cm-1 which indicates that glycerol carbonate has been formed.

Page 16 of 24 | Total Record : 238

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