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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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Perbandingan Efektivitas Bioadsorben Berbagai Serbuk Kulit Buah Terhadap Logam Pb Dari Limbah Cair Laboratorium Farmasi Hesty Nuur Hanifah; Ginayanti Hadisoebroto
Al-Kimia Vol 9 No 2 (2021): DESEMBER
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.v9i2.24660

Abstract

Pharmaceutical laboratory liquid waste is a source of heavy metal contaminants that can be harmful to living things if not treated properly. One of these heavy metals is lead (Pb), which if accumulated in the body can cause kidney disorders, nerves and even death. Utilization of bioadsorbents derived from biomass in the form of fruit peels can be a solution because they generally contain compounds that have functional groups that can bind to metals. The purpose of this study was to reduce Pb levels in liquid waste using a biomass waste adsorbent made from five) kinds of fruit peel powder, namely jackfruit peel, salak, durian, banana and watermelon.. The adsorption process must be carried out under optimal conditions, by varying the pH factor, immersion time and mass of the bioadsorbent powder. Measurement of Pb levels was carried out using Atomic Absorption Spectrophotometer (AAS) at a wavelength of 283.3 nm. The results showed that the highest adsorption effectiveness was obtained using jackfruit peel powder, which was 94.74%,. While the lowest adsorption effectiveness was using banana peel powder, which was 57.29. The adsorption effectiveness of watermelon, salak and durian peel were 91.52%, 90.5% and 63.74%, respectively.
Characteristics of Self Compacting Concrete (SCC) by the Silica Fume as Portland Cement Substitute Herliati Rahman; Puput Dwi Rahayu
Al-Kimia Vol 9 No 2 (2021): DESEMBER
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.v9i2.21064

Abstract

Self-compacting concrete (SCC) is a type of concrete that can flow by itself and can self-compact without using a compactor such as a vibrator. This study aims to observe the effect of cement substitution with silica fume on the compressive strength of concrete. The researchers expect a compressive strength of Self Compacting Concrete up to 500 kg/cm2, although silica fume substituted some portland cement. In order to reduce water use while maintaining the slump flow value of 60±2 cm, a superplasticizer was added at the fixed composition of 1.2% (w/w). The experimental design of silica fume as a cement substitute with a variation of 0%, 5%, 10%, and 15% (w/w). The concrete compressive strength test is carried out under the ASTM C234 standard, while the slump flow value refers to the ASTM C494 standard and the British Standard 5075. Although there was no compressive strength of 500 kg/m2 for all types of cement obtained, it shows that the highest compressive strength of SCC concrete was in the type of OPC cement at 28 days of age.
Kemampuan Adsorpsi Zeolit Alam Terimpregnasi Asam Lemak Hidroksamat sebagai Agen Pengkelat Ion Logam Tembaga Muhsinun Muhsinun; Fena Prayunisa
Al-Kimia Vol 9 No 2 (2021): DESEMBER
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.v9i2.23993

Abstract

One of the way to recycle heavy metals in the prevention of environmental pollution is by using a solid-liquid extraction method through the impregnation mechanism of chelating agent in the adsorbent to increase its ability to bind heavy metal ions. In this study, the impregnation of fatty hydroxamic acids (FHA) successfully carried out on active natural zeolite (ZAA). This is has been done to increase the maximum adsorption capacity of ZAA towards heavy metals. The purpose of this study was to examine the adsorption ability of FHA impregnated onto ZAA as a chelating agent in copper metal ions by using column chromatography. This column contains FHA, which synthesized from crude rice bran oil and impregnated onto ZAA. There are several parameters were investigated, they are, the effect of FHA concentration, mass of FHA-ZAA resin and pH of the metal ion sample. From this study, the concentration of FHA impregnated on the zeolite surface reached 41.60%. The optimum conditions for Cu(II) adsorption by FHA-ZAA were as follows: mass ratio of FHA-ZAA resin with Cu(II) concentration (g : ppm) was 1:100 and the optimum condition of Cu(II) ion was at pH 5
Minyak Atsiri Kulit Jeruk Sebagai Bahan Obat Hirup Infeksi Saluran Pernapasan Akut (Ispa): Seleksi dan Organoleptik Prototipe Produknya Nisa Lelita Fadilah; Mella Monica; Ria Heni Sigiro; Irmanida Batubara
Al-Kimia Vol 9 No 2 (2021): DESEMBER
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.v9i2.23686

Abstract

Acute Respiratory Infection (ARI) is an acute inflammation of the upper or lower respiratory tract caused by bacterial, viral, fungal and other parasitic infections. Lemon peels have been reported to contain beneficial compounds such as phenolic compounds and flavonoids. Flavonoids have been reported to have antioxidant, antibacterial, antiviral, anti-inflammatory, anti-allergic and anticancer activities. The review was conducted to select the orange peel from the best type of orange that can be used as an inhaler for people with ARI. National and international journals were selected based on the keywords citrus peel, antibacterial and antiviral. The chemical components reported in the essential oils of various citrus peels were determined and correlated with their related activity as antibacterial and antiviral. This systematic review shows that compounds that have the potential as antimicrobial, antibacterial and antiviral are flavonoids and limonina, these compounds are widely contained in the essential oil of lemon peel. The conclusion of the review shows that lemon peel essential oil has the potential as a raw material for anti-ARI drugs.
Kajian Fitokimia dan Identifikasi Senyawa Metaboli Sekunder Daun Pare (Momordica Charantia L.) Muhammad Taupik; Endah Nurrohwinta Djuwarno; Moh Adam Mustapa
Al-Kimia Vol 9 No 2 (2021): DESEMBER
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.v9i2.23633

Abstract

Pare plant is a plant that is found in almost every region in the country Indonesia. Plant is used as a traditional medicine to eliminate some diseases. The aim of this study was to isolate and identify the compounds terpenoids methanol extract fraction of n-hexane pare leaf (Momordica charantia L.) using UV-VIS spectrophotometry. Insulation done by maceration method using methanol to produce condensed methanol extract as much as 36.25 grams. Extracts condensed methanol produced is tested phytochemical. Phytochemical test results shows that it contains alkaloids, saponins and steroid / terpenoids. Condensed methanol extract then fractionated using liquid-liquid partition with solvent n-hexane and methanol with a ratio of 4: 2 ie 133 ml of n-hexane and 67 mL of methanol. Non-polar phase (phase n-hexane) results of further partitioning is evaporated using a rotary evaporator to produce a thick n-hexane extract as much as 1.25 grams hereinafter in the TLC test ratio of solvent to produce the best. Solvents are chosen that n-hexane: ethyl acetate (3: 1). Separation and purification was performed using Vacuum Liquid Chromatography (KCV) using silica gel GF254 as stationary phase and solvent n-hexane: methanol as mobile phase and eluted gradually. Isolates were then tested using Thin Layer Chromatography (TLC). Isolates were identified using UV-VIS spectrophotometry. Analysis of physicochemical data qualitatively using UV-VIS spectrophotometry on samples of the methanol extract of N-Hexane fraction pare leaf (Momordica charantia L.) class of compounds containing triterpenoids. This is because the absorption band at a wavelength of 274.2 nm and 432.8 nm with absorbance respectively 0.601 and 0.177 were suspected because of the transition of an electron from n à π*.
Perbandingan Aktivitas Ekstrak Daun Tapak Dara (Catharanthus Roseus) dan TBHQ Sebagai Antioksidan Minyak Goreng Terhadap Fotooksidasi UV-C Akhmad Al-Bari; Romadhiyana Kisno Saputri
Al-Kimia Vol 9 No 2 (2021): DESEMBER
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.v9i2.24297

Abstract

Cooking oil is one of the sources of human energy with a total consumption of 290 million tons/year by the public. The largest use of cooking oil is the household sector which generally gets its oil from traditional markets. The oil that is traded in the market is often not covered properly so that it is easily exposed to sunlight. The light that hits the oil can cause damage, including the formation of peroxide compounds. Efforts to overcome the damage include adding natural antioxidants as an alternative to synthetic antioxidants. This study aims to determine the impact of 254nm ultraviolet photooxidation on the containment of oil oxidation by the addition of tapak Dara leaf extract and TBHQ. The oil was photo oxidized with variations of 1, 3, 6, and 12 hours to determine the hold. To determine the quality of the oil, three parameters of sample testing were carried out, namely free fatty acid content, peroxide number, and water content. The results of photooxidation showed that cooking oil with tapak Dara leaf extract had lower holding activity than TBHQ. This value was measured on the peroxide number and free fatty acid content, while the measurement of the water content of the measured containment activity was better with a value that met SNI, namely <0.1%
Seleksi Sel Bakteri Dari Minyak Bumi Sebagai Molekul Pengenal Dalam Biosensor Benzena Alfiah Alif; Dyah Iswantini; Henny Purwaningsih; Novik Nurhidayat; Amalyah Febryanti
Al-Kimia Vol 9 No 2 (2021): DESEMBER
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.v9i2.24378

Abstract

Benzene is one of the harmful compounds which can affect both healthcare and environmental quality. Conventionally the effort of detecting this compound still requires several sample pre-treatments, contributing to a long analysis time and sophisticated instrumentation. Therefore, this study was aimed to determine the potency of bacteria as the bioreceptor for detecting benzene electrochemically. The bacteria isolate was immobilized on the working electrode surface. Four bacteria isolates from the petroleum sample were evaluated. The results showed that isolate II produced high oxidation and reduction peak currents as much as 150 µA and -490 µA respectively. The selected bacteria showed characteristics to Pseudomonas sp. physiologically. Since the bacteria can degrade benzene, thus hypothetically it can produce benzene dioxygenase. Through the catechol formation, 3 mM benzene produced 108.7 µA after 11.4 s from the starting scan. This result suggested that the excreted enzyme from the selected bacteria could react with benzene enzymatically.
Identifikasi Komponen Senyawa Organik dan Uji Aktivitas Antiinflamasi dari Fraksi Etil Asetat Daun Cabai Rawit (Capsicum frutescens L.) Uci Pradina; Ajuk Sapar; Warsidah Warsidah; Endah Sayekti; Anthoni Batahan Aritonang
Al-Kimia Vol 10 No 1 (2022): JUNI
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.v10i1.20456

Abstract

Cayenne pepper was known to treat swelling of tissue cells and is thought to have anti-inflammatory activity. The aim study is to examine the anti-inflammatory activity of the ethyl acetate fraction of cayenne pepper and identify the components of organic compounds in the ethyl acetate fraction. The stages of this research include preparation, extraction, partitioning, phytochemical tests, anti-inflammatory activity tests using Human Red Blood Cells (HRBC), and identifying the components of organic compounds they contain. Among the three fractions obtained at the extraction stage, the ethyl acetate fraction had the best activity as an anti-inflammatory at a concentration of 1000 mg/L of 57.77%. The fractionation of the ethyl acetate fraction was carried out using Vaccum Liquid Chromatography (VLC), and four combined fractions were obtained. One of the combined fractions, code EA-4-5, with a weight of 0.188 grams, was analyzed using GC-MS and FTIR. The two main compounds obtained from the GC-MS analysis were dodecanoic acid (25.79%) and (-)-Loliolide (12.86%). The results of the FTIR interpretation of the EA-4-5 fraction showed absorption at a wave number of 3234.62 cm-1 (stretching vibration of the -OH functional group), 3088.03 cm-1 and 3028.24 cm-1 (stretching vibration of the functional group =CH), 2931.8 cm-1 and 2858.51 cm-1 (functional group strain vibration –CH), 1712.79 cm-1 (functional group strain vibration –C=O), and 1606.7 cm-1 (strain vibration functional group –C=C).
Penentuan Logam Cr(VI) Menggunakan Metoda Voltammetri Stripping Anoda (VSA) pada Sampel Air Laut dan Air Sungai Hilfi Pardi; Nancy Willian
Al-Kimia Vol 10 No 1 (2022): JUNI
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.v10i1.21799

Abstract

The research aims to determine Cr(VI) in the sea and river water samples using the Stripping Anode Voltammetry (VSA) method has been carried out by finding the optimum conditions for deposition potential, deposition time, pH, and electrolyte concentration measurements. As well as looking at the accuracy and accuracy of the method, it is necessary to determine the value of the relative standard deviation (SRD) and the value of recovery. The results obtained were -1.3 V deposition potential, 60 seconds deposition time, 0.2 M NH4Cl supporting electrolyte solution concentration, pH 10, SDR value was 2.36%, and the percent recovery value was 99.91%. As an application of this method, the determination of Cr(VI) was carried out in seawater samples from Senggarang and water from the Carang Tanjungpinang river. The concentration of Cr(VI) in Senggarang seawater samples was 133.751 g/L and in Carang River water samples 34,702 g/L.
Karakteristik Bakteri Probiotik dari Saluran Pencernaan Ayam Kampung sebagai Kandidat Pakan Ayam Nurmumin Jabir; Rizka Oktavia
Al-Kimia Vol 10 No 1 (2022): JUNI
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Probiotics are living organisms that can provide a beneficial effect on the host's health when consumed in sufficient quantities by improving the balance of the intestinal microflora when it enters the digestive tract. Probiotics can be bacteria, fungi, or yeast, but the most probiotics are bacteria. Microbes in probiotic products function to improve health and are classified as healthy and functional foods. This study aimed to isolate, characterize and identify probiotic bacteria in the digestive tract of native chickens as bacteria that degrade organic compounds. Characterization of probiotic bacteria included observation of colony morphology, gram staining, bacterial degradation test for cellulose, pectin, and starch, calculating dissolution index, and making probiotic animal feed. The results showed that 15 bacterial isolates were obtained, two of which were determined as candidates for chicken feed. The two isolates showed probiotic characteristics.

Page 18 of 24 | Total Record : 238

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