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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 10 Documents
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Search results for , issue "Vol 8 No 2 (2020): DECEMBER" : 10 Documents clear
Aplikasi Tepung Cacing Tanah (Lumbricus rubellus) Untuk Meningkatkan Kadar Omega-3 Dan Omega-6 Ikan Bandeng (Chanos chanos) Budidaya Tambak Ismail Marzuki; Irwan Paserangi; Muhammad Yusuf Ali
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.v8i2.13807

Abstract

The quality of milkfish (Chanos chanos) in ponds cultivation is low. Small body size, pale body surface, odor of mud and low nutritional value cause not compete in the retail market, due to ponds experiencing burnout due to excessive use of synthetic fertilizers and pesticides. The aim of this study was improved the quality of milkfish farming with earthworm flour (Lumbricus rubellus) (TCT). Adding TCT to feed with four different treatments for 30 days. The results showed that the administration of 5%, 10% and 15% TCT, could improve the quality of milkfish ponds, both qualitative and quantitative. Qualitative improvement aspects, namely the surface of the fish's body was brighter, scales cleaner and whiter, the smell of mud was not felt, while the achievement of quantitative aspects was the fish's weight increased sharply in the range of 1.465% - 1.846% per day and omega-3 levels increased in the range of 1.9834 % - 5,5693% and omega-6 increased in the range of 1.4993% - 4.8796% or an increased of nearly 10 times each compared to levels of omega-3 and omega-6 milkfish samples without TCT
Kapasitas Adsorpsi Biomassa Paku Air (Lemna minor linn) Teresterifikasi Oleh Asam Sitrat Terhadap Mangan(Ii) Anita Anita; Titin Anita Zaharah; Ajuk Sapar
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.v8i2.16144

Abstract

Research on the adsorption of Mn (II) ions has been carried out using  biomass duckweed (Lemna minor linn) with the esterified by citric acid. This study aims to determine the maximum adsorption capacity of Mn (II) ions in using adsorbent biomass of duckweed esterified by citric acid. Water nail biomass adsorbents were characterized using FTIR to determine the functional groups of citric acid esterified adsorbents. The stages of this research include modification of water biomass using citric acid, followed by manganese (II) ion adsorption tests with pH variations in pH, contact time of adsorption and initial concentration variations under optimum conditions. The results showed that optimum adsorption occurred at pH  5, contact time for 10 minutes and the concentration of Mn (II) solution 15 mg / L was measured using atomic absorption spectrophotometry. The equation used in the study follows the Langmuir and Freundlich equations. Based on the Langmuir isotherm equation, the maximum adsorption capacity of Mn (II) ion using citric acid modified water nail biomass is  7,645 mg/ g, the equilibrium constant is 4,317 L/ mol and the adsorption energy is 36,84039 KJ / mol.
Dekolorisasi Malachite Green oleh Reagen Fenton: Optimalisasi Parameter dan Studi Kinetika Said Ali Akbar
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.v8i2.13261

Abstract

The study of the decolorization of Malachite Green in solution using the Fenton reagent has been investigated. The effects of different reaction parameters such as hydrogen peroxide concentration, iron ion concentration, pH of the solution, and initial dye concentration have been carried out. In this study the experimental range for H2O2 concentrations varied from 0.2 mM to 4 mM and Fe2+ ions were 0.01-0.1 mM. All experiments were carried out at room temperature of 27 oC. Furthermore, the optimal oxidation condition with the concentration of MG dyes of 20 mg/L was with H2O2 0.5 mM, Fe2+ 0.05 mM, and pH at 3. The dye decolorization process of MG was also observed kinetically, it was found that the degradation process took place with first-order reaction rate. Under optimal conditions, the dye solution with a concentration of 20 mg/L completely decolorized within 60 minutes at 27ºC, and 76% of the Chemical Oxygen Demand (COD) was removed. This proves that MG was not only decolorized but also mineralized.
Aktivitas Antioksidan Kulit Pisang Muli (Musa acuminata linn) dan Kulit Pisang Kepok (Musa paradisiaca formatypica) Putri Ade Rahma Yulis; Yelfira Sari
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.v8i2.15543

Abstract

This study examined the content of banana peel. The research began with an extraction  process then continued with phytochemical tests.  Qualitatively result showed banana peel contain quite complex secondary metabolites including flavonoids, saponins, phenolics, tannins, steroids and triterpenoids for Muli banana peels and flavonoids, saponins, phenolics, tannins, and triterpenoids for Kepok banana peels. Qualitative tests were conducted to detect total phenolic and flavonoid content using Microplate Reader.  Flavonoids averaged 19.797 mg QE / g for  Muli banana peel and for Kepok banana peel 15, 529 mg QE / g. The measurement results of the total phenolic content  of Muli banana peel was 108.336 mg GAE / g and for Kepok banana 32, 496 mg GAE / g. Antioxidant activity for Muli banana peels has an IC50 value of 27, 56 µg / ml which means it belongs to a group with high antioxidant activity and Kepok banana 479.77 µg / ml which is classified as a low antioxidant activity but still within the range of potential values as antioxidant. From this research, it is known that both  of types banana peels have the potential as raw material for developing products with high antioxidant levels  Keywords: Banana peels, antioxidants, secondary metabolites
Perubahan Pola Kromatografi Lapis Tipis Ekstrak Daun dan Batang Teh (Camellia sinensis (L.) Kuntze) yang Menjadi Inang bagi 3 Benalu Berbeda Irmanida Batubara; Lydia Octifani; Jarwadi Budi Hernowo
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.v8i2.14764

Abstract

Plants produce primary and secondary metabolite compounds depending on their growth conditions. The tea plant (Camellia sinensis (L.) Kuntze that hosts Loranthus produces different metabolites compared to those not hosting. This study aims to determine the change in the thin layer chromatography pattern (TLC) of leaf and stem tea extract that is the host 3 types of Loranthus tea namely Loranthus atropurpureus, Loranthus cochinchinensis, and Loranthus pentandrus. Leaf and stem tea extracts that host 3 types of Loranthus were separated using TLC with stationary phase of silica gel 60 F254 and the mobile phase of DCM: MeOH: n-hex (48:1:1). Separation results was detected using UV lamps 254 and 366 nm. The changes of the band's area of each extract were determined using software ImageJ. The results showed a change in TLC patterns. The declining band's area was found in bands detected at 366 nm for the host's stem and tea leaves. The increasing band's areawere found on bands detected at 254 nm especially on tea leaves that host. In conclusion, the change in TLC pattern can be used to determine the compounds that change due to tea plants to host and can be alternative utilization.
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. 

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