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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.

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Articles 8 Documents

Search results for , issue "Vol 2 No 1 (2014): June" : 8 Documents clear

Isolasi Senyawa Aktif Ekstrak Etanol Biji Alpukat (Persea americana) dan Uji Toksisitas Terhadap Artemia Salina Leach Andi Nur Fitriani Abubakar; Aisyah Aisyah; Maswati Baharuddin
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Avocado seed (Persea americana) is recognized as one of medicinal plants. It contains several secondary metabolites, which have toxic activity. However, efforts to identify active compounds from avocado seeds (Persea americana) are still relatively rare. Therefore, isolation and toxicity assay have been conducted foward the active compound of avocado seed. Maceration one kilogram of seed dried powder by ethanol obtained 49,7464 gram extract. Separation of etanol extract by column chromatography generated 0,0698 grams of pure white needle crytal, which is positively triterpenoid based on Lieberman-Buchard test. In addition, infrared spectrum showed the existence of OH, C=C, C-C, C=O, -C-H, -CH3,-CH2 and C-O stretch, which support the presumed compound. The result of toxicity test on Artemia salina Leach showed that the extract, fraction and pure isolates of the etanol extract are toxic with LC50 values 13,274 g/mL; 9,528 g/mL and 8,128 g/mL, respectively.

Analisis Linearitas Keluaran Radiasi pada X-Ray Mobile dengan Menggunakan Piranha Nur Mukminah R; Iswadi Iswadi; Ihsan Ihsan Ihsan
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

The research was conducted on the linearity of the output radiation in the mobile X-ray by using Piranha. This study aimed to measure the radiation dose exposure, to determine the relationship between the increase in the voltage of the radiation dose exposure and increase the tube current to the radiation dose exposure, as well as to analyze the radiation output and linearity of the output radiation. Data collection was conducted at the Dr. Tadjuddin Chalid Hospital Makassar in radiological installation. In this study the variables that measured the radiation dose and exposure variables that change the tube current and voltage. The data obtained and analyzed to calculate the value of the output radiation and radiation output linearity in the X- ray mobile. The analysis showed that the X-ray mobile with GE brand that are in radiological installation Dr. Tadjuddin Chalid Hospital has good linearity.

Variasi Konsentrasi Aktivator Asam Sulfat (H2SO4) pada Karbon Aktif Ampas Tebu Terhadap Kapasitas Adsorpsi Logam Timbal Asrijal Asrijal; St Chadijah; Aisyah Aisyah
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Bagasse is a waste-disposal which can contaminate the ambient surroundings. In order to ward off the massive impact, a method which is considered to be good is that to turn it into adsorbent in a process of lead-metal adsorption. This research aims to know the concentration of lead-metal that can be adsorbed by an active carbon and to know the effect of H2SO4 activator on the adsorption capacity of bagasse towards the lead-metal. The activated carbon, was derived from bagasse in three phases namely preparation, carbonization, and activation. The bagasse was carbonized in temperature of 400oC. It was then activated by H2SO4 in concentration of (0%, 5%, 10%, 15%, and 20%) for 24 hours, and heated to 500 oC. The adsorption was performed during one hour by utilizing 150 rpm shaker. The analysis of lead concentration using atom adsorption spectrophotometer (AAS) showed that the inactivated carbon performed the best adsorption with the concentration of lead adsorbed was to 9.8485 mg/L and the capacity of adsorption was to 0.197 mg/g.

Identifikasi Metabolit Sekunder Ekstrak Etil Asetat Biji Alpukat (Persea americana Mill.) dan Uji Toksisitas Terhadap Larva Udang Artemia salina Leach. Musyarrifah Musyarrifah; Asriani Ilyas; Maswati Baharuddin
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Since ancient times the people of Indonesia have known, and using nutritious plant as one of the efforts in the prevention of health problems. Plants belonging to the family Lauraceae is one of a group of plants commonly used by communities as traditional medicine, one of which is Avocado (Persea americana Mill.) Especially in the seeds, which contain secondary metabolites, namely polyphenols, tannins, flavonoids, triterpenoids, quinone, monoterpenoid and seskuiterpenoid and saponins. This study aims to identify the secondary metabolites contained in the seeds of avocado (Persea americana Mill.) And determine the toxicity of extracts and pure compounds using Brine Shrimp Lethality Test (BSLT). Avocado seed solvent extracted using ethyl acetate and the extract obtained was tested group and toxicity testing. The results showed that the ethyl acetate extract of avocado seeds contain phytochemicals based on test results of secondary metabolites, the flavonoids, alkaloids and steroids. Avocado seed solvent extracted using ethyl acetate and the extract obtained was tested group and toxicity testing. The results showed that the ethyl acetate extract of avocado seeds contain phytochemicals based on test results of secondary metabolites, the flavonoids, alkaloids and steroids.

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.

Pengaruh Konsentrasi Aktivator Asam Klorida (HCl) Terhadap Kapasitas Adsorpsi Arang Aktif Kulit Buah Kakao (Theobroma cacao. L) Pada Zat Warna Methanil Yellow Sitti Arung; Muh. Yudi; St Chadijah
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Cocoa’s peel is a waste which usually burned, stacked or disintegrated and can make pollution to the environment. This condition motivates the researcher to produce the value-added product from the cocoa’s peel, such as activated carbon and as well as it can solve the environmental problems. This research aims to know the influence to use variation of concentration of activator HCl whice produces the optimum adsorption capacity from charcoal active of cocoa’s peel to the substance color of methanil yellow. Active carbon which is used in this research comes from cocoa’s peel which granular types with standard -100+40 mesh. Carbon is activated by physics in furnace with 600°C heat during 2 hours and is activated by chemistry with submerged of HCI 1M, 2M, 3M, 4M and 5M during 24 hours. The result of this research shows that optimum concentration in HCI 1M with adsorption capacity from charcoal active of cocoa’s peel is as large as 1,572 mg/g. Whereas knowing the influence of activator is used tabulation method by statistically, where we can get FHitung 0,003 is smaller from FTabel 10,127. It explains that H0 is accepted to reject H1. Therefore, it can conclude that there is not significant influence to use variation of concentration of activator HCl to adsorption capacity of charcoal active from cocoa’s peel in substance methanil yellow.

Kinetika Hidrolisis Pati Biji Nangka (Artocarpus heterophyllus) Menggunakan Katalisator Asam Klorida (HCl) Sri Endang; Muh. Yudi; Asri Saleh
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

The research of kinetic hydrolysis from the starch of jackfruit seed (Artocarpus heterophyllus) used clorid acid catalyst (HCl) aims to know the influence of variation of concentration HCl catalyst which give the maximum result of hydrolysis of the starch of jackfruit seed, determining the optimum concentration of HCl catalyst that produces the maximum value of the reaction rate constants, and determine the value of the reaction rate constant of hydrolysis the starch of jackfruit seed using catalyst. The method of this research has done in two stages that are the determination of the optimum catalyst concentration of HCl hydrolysis reaction of the starch of jackfruit seed using various concentration of catalyst HCl 0,5 M; 1,0 M; 1,5 M; 2,0 M and 2,5 M at the optimum temperature and stirring time (90oC during 70 minutes). Hydrolysis followed by neutralization process using sodium hydroxide solution and evaporated to get the form of glucose concentrated, that glucose is analyzed by qualitative and quantitative with Benedict experiment and fenol sulphate acid method, based on maximum degree of glucose which is gotten from the result of hydrolysis the starch of jackfruit seed variation concentration oh HCl is in HCl 1,5 M concentration with degree of glucose (% weight) is 7,54% with percentage of starch conversion is 83,21%. Second step is determining the value of hydrolysis constant rate reaction which use time variation (30, 40,50, 60 and 70) minutes in 70 minutes optimum operation condition, 90oC te mperature and concentration catalyst of HCl 1,5 M. Based on statistic calculation date of ANOVA is gained F hitung < F tabel so Ho receive and reject HI which shows that there is not influence catalyst variation concentration of HCl to the result of hydrolysis the starch of jackfruit seed which is gained. The result of the research shows that hydrolysis of kinetic of the starch of jackfruit seeduse HCl catalyst is reaction of the first apparent orde with value of the reaction constant rate k = 0,0216 minutes-1.

Pengaruh Penyimpanan Pada Suhu Rendah (Freezer -3oC) Terhadap Kandungan Air dan Kandungan Lemak pada Ikan Lemuru (Sardinella longiceps) Anna Handayani; Alimin Alimin; Wa Ode Rustiah
Al-Kimia Vol 2 No 1 (2014): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

One of the peaceful and best pickling methode to maintain freshness of product is depository at low temperature (freezer). Through depository of process industrial balance and availability of processing result of fishery will remained to be taken care of. Depository of fish raw material specially of fish flesh expected will be more be economic in course of depository at low temperature (freezer). The fat rate before is depository (0 day) that is 5,14%, while at depository 1 day until 3 day of it fat is 9,43%, 14,70%, 15,30%, and to 4 until 7 days the fat content is downhill that is 7, 15%, 5, 50%, 3,96%. The rate irrigate before is depository (0 day) that is 26, 96%. While at depository 1 day until 3 day of its water that is 27, 87%, 27, 44%, 27,20%, and depository to 4 day until 7 days water content mount that is 27,94%, 27,97%, 28,10%, 28,40%. Depository of lamuru fish flesh (sardinella longiceps) conducted by at low temperature (freezer -3oC) during 7 day can cause degradation quality of good fish flesh of fat rate and also lamuru fish flesh colour changing from squeezing colour to become to squeeze to turn pale. While its water content is depository longer progressively increase.

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