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Al-Kimia

al-kimia
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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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Dekolagenasi Limbah Tulang Paha Ayam Broiler (Gallus domesticus) oleh Natrium Hidroksida (NaOH) untuk Penentuan Kadar Kalsium (Ca) dan Fosfat (PO4) Sitti Musdalifah; Syamsidar HS; Suriani Suriani
Al-Kimia Vol 4 No 2 (2016): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

This research aims to determine the level of Calcium (Ca) and Phosphate (PO4), and the influence of broilers femur submersion in NaOH toward Calcium (Ca) and Phosphate (PO4) levels. The method used in this research is decollagenation of broilers (Gallus domesticus) femur. Then, the parameters observed are chemical tests of Calcium (Ca) and Phosphate (PO4) levels. Decollagenation treatment was carried out in three soaking-time variation such as 42 hours, 72 hours, and 96 hours to respectively determine the Calcium and Phosphate levels. The result shows that soaking-time of femur does not give significant effect to increased levels of Calcium (Ca) and Phosphate (PO4).

Penggunaan Enzim α-Amilase dari Saccharomycopsis fibuligera R64 untuk Peningkatan Kualitas Roti Komposit Terigu-Ubi Jalar Ungu Agus Safari; Safri Ishmayana; Sylvi Qurrotul Aini; Saadah D. Rachman; Muhammad Yusuf; Muhammad Fadhlillah; Endah Wulandari; Idar Idar
Al-Kimia Vol 5 No 2 (2017): 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.v5i2.3861

Purple sweet potato (Ipomoea batatas var. Ayamurasaki) is one of typical sweet tubers which is also commonly well known as Ipomoea blackie due to blackish purple (solid purple) tuber skin and flesh. The sweet potato can be transformed into flour or pasta and used to substitute wheat flour in the production of composite bread. Instead of synthetic chemical compounds, α-amylase isolated from the yeast Saccharomycopsis fibuligera can be added to the flour or dough of the composite bread to improve its quality. The purpose of the present study was to investigate the effect of α–amylase addition on the quality of the purple sweet potato flour and pasta composite bread. The observed properties of the bread were crumbs morphology of the bread, volume increment, bread height, texture, and organoleptic test. The results showed that addition of the α-amylase to the dough of the composite bread increased the volume increment value from 155.0% to 177.1% and from 335.7% to 342.1% for the sweet potato flour and pasta bread composite, respectively. While height of the bread increased from 4.7 to 5.1 cm and from 6.9 to 7.8 cm after addition of the enzyme for the sweet potato flour and pasta bread composite, respectively. Composite bread with α-amylase addition has softer texture and higher preference. Morphology examination result showed that starch granules in the bread crums with α-amylase treatment were disrupted. Most plausibly, the enzymes degrade the starch granules and produced dextrin which inhibited the cross linking formation between starch and protein, and therefore, the speed of hardening process of the bread can be reduced.

Analisis Kadar HMF (Hidroxy Methyl Furfural) pada Madu Bone Zakaria Zakaria
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

This study aimed to determine the concentration of HMF ((hydroxy methyl furfural) in Bone honey. Regency Bone with 145.073 ha of forest, of area 4,559 km² honey potential for livestock development. The quality of honey is determined from the nectar source, geographic location, and the processing technology. HMF concentration is one of the indicators in honey to determine the quality marker and freshness of honey. This research was done in three stages, namely the stage of sample preparation, extraction phase, and phase identification. Stages of sample preparation were performed to determine sampling locations, the determination of the location of the extraction and identification. Extraction is done in analytical chemistry laboratorium Science Faculty, Hasanuddin University. Honey samples were extracted with methanol. The identification process carried out in an integrated laboratory Department of Chemical Science Faculty of Hasanuddin University to obtain the data of UV-Vis, HPLC performed while the data in an integrated laboratory public health, Hasanuddin University. The results obtained by HPLC showed the data HMF concentration of 0.264 mg/kg, while the data obtained by UV-Vis HMF concentration of 0.230 mg/kg. Based on these data concluded that honey Bone has a good quality in terms of content HMF.

Produksi dan Uji Aktivitas Enzim Selulase dari Bakteri Bacillus subtilis Al Maratun Sholihati; Maswati Baharuddin; Santi Santi
Al-Kimia Vol 3 No 2 (2015): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Enzyme cellulose can be produced from bacteria Bacillus subtilis. This bacteria is a kind of bacteria which grounded on the genus that can degrade cellulose to glucose. Cellulase enzyme acquired different optimum pH and temperature depends on the bacteria. This research aim to produce and analyze the activity of the cellulose enzyme from bacteria Bacillus subtilis at optimum pH and temperature. The research of this enzyme cellulose derived by prolific process and rejuvenation bacteria Bacillus subtilis on the nutrition culture, nutrition selective, and nutrition production that executed by cold centrifugation to obtain extract or the enzyme cellulose at the temperature of 4°C, 3500 rpm within 15 minutes. On the determine pH with variety pH 5,6 using buffer acetat and pH 6,0; 6,5; 7,0; 7,5; and 8.0 using phosphate buffer while on the determine temperature using variety temperature 25°C, 30°C, 35°C, 40°C, 45°C, and 50°C which the next make an experiment activity enzyme cellulose by method Nelson-Somogy that measured in spectrophotometer UV-Vis of λ 540 nm. The result shows that the highest enzyme activity at optimum pH of 6, 0 is 4,3661 10ˉ3 U/mL and in optimum temperature of 30°C as is 5,6609 10ˉ3 U/mL.

Isolasi dan Uji Aktivitas Enzim Selulase dari Bakteri Simbion Larva Kupu-Kupu Family: Cossidae Terhadap Variasi Lama Inkubasi Rina Dwismar; Maswati Baharuddin; Syamsidar HS
Al-Kimia Vol 1 No 1 (2013): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

The study is titled Isolation and Testing Cellulase Enzymes from Bacterial Symbiont butterfly larvae Family: Cossidae of Variations on Old Incubation aimed to isolate cellulase enzymes in larvae of butterflies and determine tIsolasi dan Uji Aktivitas Enzim Selulase dari Bakteri Simbion Larva Kupu-Kupu Family: Cossihe optimum incubation time of enzyme production and activity of enzymes to degrade CMC substrate. In this study, an enzyme produced from the microbial gut symbionts Cossidae butterfly larvae that had been cultured in media cellulolytic, then produced the long incubation variation of 0, 12, 24, 36, 48, 60, and 72 hours, crude enzyme obtained by centrifugation at a speed of 5000 rpm at 40C and then tested enzyme activity using UV-VIS spectrophotometer. From the research result that cellulolytic bacteria can be isolated from the gut of larvae of butterlies Family: Cossidae with old optimum activity of cellulase enzyme production is 60 hours with a value of activity amounted to 2,38 x 10-3 U/mL.

Biodegradasi Petroleum dan Hidrokarbon Eikosana oleh Isolat Bakteri Pseudomonas aeruginosa Faiqah Umar
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Biodegradation of petroleum and hydrocarbon eicosane by Pseudomonas aeruginosa isolate. Hydrocarbon are important environmental contaminants in soil and water. These compounds have a potential risk to human health, as many of them are carsinogenic and toxic to marine organisms such as diatome, gasthrophode, mussel, and fish. The purpose of this research was to know the ability of Pseudomonas aeruginosa to degradate the hydrocarbon (petroleum Hundill and eicosane) substrate. Growing test used in two steps, the preculture and culture step. The biodegradation capacity was measured by quantitative and qualitative tests. The essay showed an increasing biodegradation capacitypercentage of bacteria cell mass on hydrocarbon substrate. The percentage on petroleum Hundill substrat as follows; log phase was 51,6%, descelerate phase was 73%, and linear phase was 81,4%. On eicosane substrate as follows; log phase was 62,7%, descelerate phase was 85,2%, and linear phase was 85,2%. The qualitative biodegradation capacity by chromatography result showed separate enchained of carbon n-alkana in each growth phase on petroleum Hundill substrate. Carbon chain termination as follows; C11, C12, C14, C15, C16, C18, C22 on log phase, C12, C17, C19, C20, C24 on descelerate phase, and C12 until C25 even better on linear phase.

Analisis Hubungan Kuantitatif Struktur dan Aktivitas untuk Merancang Insektisida Baru Turunan Karbamat Menggunakan Metoda Semiempirik PM3 Agus Dwi Ananto
Al-Kimia Vol 5 No 2 (2017): 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.v5i2.3639

A research has been conducted to investigate the HKSA equation model of a set of carbamic derivative insecticidal compounds based on the hydrofobic, electronic and steric descriptors. The descriptors are calculated by a method of PM3 while the the insecticidal activity are obtained by the experiment. The relationship of the descriptos and the activities are determined by multilinear reggression analysis. The result of the analysis then provide a best equation model that can be used to design new carbamic derivative insecticidal compounds. These design might be recommended to be synthesized in the experimental works.

Penentuan Nilai Kalor Serta Pengaruh Asam Klorida (Hcl) Terhadap Kadar Bioetanol Bonggol Pisang (Musa Paradisiacal) Asri Saleh; Jawiana Saokani; Samsul Rijal
Al-Kimia Vol 4 No 1 (2016): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

The research of influence bioetanol degree to chlorine acid catalyst concentration (HCl) in the hydrolysis process banana’s bump (Musa paradisiacal) has the goal to know the influence of catalyst concentration variation HCl was given the result of banana’s bump hydrolysis which maximum on catalyst variation HCl 0,5 M; 1,0 M; 1,5 M; 2,0 M and 2,5 M on temperature 70oC, 150 rpm during 120 minute with appointment of calor percentage on optimum etanol degree. Based on the result of the research etanol degree highest on HCl with concentration 2,5 with bioetanol degree 5.29% per 10 gram banana’s bump. Based on the ANAVA calculation found out F calculate < F table so that H0 accepted and H1 refused. It’s mean that there were not influenced of concentration HCl to bioetanol degree significantly. Percentage of bioetanol calor which found out on concentration HC1 2,5 M (maximum concentration) were 3461 (Sample I) and 3384 kkal (Sample II).

Biosorpsi Tanaman Puring (Codiaeum variegatum) Terhadap Emisi Timbal (Pb) Pada Kendaraan Bermotor Nur Amalia P; Syamsidar HS; Kurnia Ramadani
Al-Kimia Vol 2 No 2 (2014): Desember
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Enhancement the motorized vehicle number will be potential for air pollution in the big cities. One of the pollutant which is resulted from burning process fuel is timbale (Pb) metal. Alternative effort that is used to decrease the higher timbale (Pb) metal pollutantmaterial is with manner biosorption use puring plant (codiaeumvariegatum).The aim of this research is to know the puring plantability in absorbs Pb metal. The treatment methodis used to sprinkling plant and without sprinkling and than directly exposure to plant with period 3,6 and 9 days. The result of research that puring leaves ability can absorb Pb concentration metal between (1 until 1,5) ppm or 0,304 mg/Kg at nine days of period exposure, it order can be considered as biosorption agent Pb metal pollution.

Uji Fitokimia Senyawa Metabolit Sekunder Dalam Ekstrak Metanol Bunga Turi Merah (Sesbania grandiflora L. Pers) Anjar Purba Asmara
Al-Kimia Vol 5 No 1 (2017): 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.v5i1.2856

A beginning investigation about the presence of secondary metabolite compounds in the methanol extract of red grandiflora flower (Sesbania grandiflora L. Pers) has been conducted. The flower which traditionally used as antihyperglycemic therapy has been extracted through methanolic-maceration. The crude extract was phytochemically analyzed by qualitative approach with specific reagent for the each type of the compound. The analysis of functional group prediction is also performed by using FTIR spectrometer. Phytochemical test showed that it contains alkaloid, tannin, polyphenol, flavonoid, quinone, and triterpenoid. The IR spectrum showed that the typical functional group of the secondary metabolite consist of hydroxide (–OH), olefin (C=C), and aromatic which as constituents of phenolic group

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