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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 10 Documents

Search results for , issue "Vol 3 No 1 (2015): June" : 10 Documents clear

Uji Kandungan Gizi Terhadap Beberapa Makanan Khas Kota Palopo Adriani Adriani
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Purpose of this research is determine the value of the nutrients that are owned by traditional food such as kapurung, lawa and fish parede. This research can be used as reference material/information to the public about the nutritional content of the food three, thus increasing the value of consumption. In this research use several methods. Carbohydrate testing using Luff schrooll method, protein testing using Kjehdahl method and fat testing using Soxhletasi method. The results showed that the content of carbohydrates, proteins and fats for the cross beam is respectively 1.87%, 1.90 % and 35.30 %. For Kapurung, carbohydrate levels of 1.77 % , 0.99% protein and 0.48% fat. For fish Parede, 0.30 % carbohydrate, protein and fat by 15.66 % 1.05%. Lawa contains carbohydrate and high fat compared cross beam and fish Parede while the highest protein content owned by fish Parede.

Sintesis Heksa-p-tert-Butilheksaesterkaliks[6]Arena dari p-tert-Butilkaliks[6]Arena Nasriadi Dali; Abd. Wahid Wahab; Firdaus Firdaus; Maming Maming
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

A research has been done to synthesize hexa-p-tert-butylhexaestercalix[6]arene using p-tert-butylcalix[6]arene as a starting material. The synthesis was carried out by esterifying p-tert-butylcalix[6]arene. Synthesis products were identified and characterized by melting point, TLC, FTIR, 1H-NMR, and 13C-NMR spectrometers. Synthesis products was obtained a white solid powder (68.45% recovery), melting point 349-351 °C, TLC (SiO2, ethanol: ethyl acetate = 1: 1 v/v, Rf = 0.90). The results of the analysis of synthesis products with FTIR, 1H-NMR, and 13C-NMR spectrometer showed that the synthesis products compound is 5, 11, 17, 23, 29, 35-hexakis (p-tert-butyl)-37, 38, 39, 40, 41, 42-hexakis (ethoxy-carbonylmethoxy) calix[6]arene.

Pengaruh Kecepatan Putar Pengadukan dan Waktu Pendiaman Terhadap Rendemen dan Kualitas Minyak Kelapa Murni (VCO) Arniah Dali; La Harimu La Harimu; LM. Cinong Simbiti
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

It as done a research on the influence of the rotational speed of stirring and standing time on the yield and quality virgin coconut oil (VCO). VCO is made with mechanical engineering variations stirring round and standing time. Variations in the rotational speed of stirring cream coconut milk is 372, 385, 449, 503, and 539 rpm. The results were obtained optimum rotational speed is 503 rpm with a yield 23.66 % (v/v). Variations coconut cream standing time is 6, 7, 8, 9, and 10 hours. The results were obtained optimum standing time is 8 hours with a yield of 22.90 % (v/v), the water content of 0.17 %, acid content of 0.26 %, saponification value of 247.656 mg KOH/g of fat, and a peroxide value of 0.199 mL eq/kg.

Permeabilitas Membran Transpor Campuran Unsur Tanah Jarang (La, Nd, Gd, Lu) Menggunakan Carrier (TBP : D2EHPA) Melalui Supported Liquid Membrane Djabal Nur Basir
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Methods that have been developed currently for the separation and purification of rare earth elements, REE’s are solvent extraction by through immobilization of an extracting agent in a porous polymeric membrane. This methods beside could increase the transport selectivity, also the amount of carrier was very few. This technique is known as supported liquid membrane, SLM. Research toward transport and separation of REE’s through SLM have been still relatively limited merely to single feed-binary mixture, and one type of carrier. The transport membrane permeability was obtained in a mixture of REE’s (La,Nd,Gd,Lu) using the carrier TBP : D2EHPA by SLM. In this SLM technique, supporting membrane PTFE (polytetrafluoroethylene) was soaked in a mixture of TBP carrier (tributilfosfat) as a neutral ligand and D2EHPA (acid-2- etilheksilfosfat) as anionic ligand with a particular concentration ratio in the solvent kerosene as membrane phase. HCl as receiver phase and solution mixture of REE’s as feed phase. Determination of the REE’s total concentration was carried out by UV-Vis spectrophotometry with NAS (sodium alizarin sulfonate) as the colouring agent at pH 4,75 and the solution absorbance was determinated at 534 nm as maximum wavelength. Transport patterns of REE’s on the variation of the concentration of total mixed carrier composition, pH, and concentration of the receiver phase were done for 300 minutes. The optimum conditions of transport mixture of REE’s (La, Nd, Gd, Lu) were feed phase pH 3,0; carrier TBP: D2EHPA (0,3:0,7) M; and receiver phase HCl 3,0 M. In this condition, the transport membrane permeability in mixture of REE’s was 0,1077 cm.menit-1 with the percent of transport was 95,24%.

Kinetika Adsorpsi Ion Logam Pb (II) pada Karbon Aktif dengan Gelombang Ultrasonik Santi Santi
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Adsorption capacity Increase of the activated carbon can be done with the use of ultrasonic energy-producing high chemical. Activated carbon is used to absorb the metals Pb(II) with a variety of time. Research purposes to determine the effect of variation of contact time on the adsorption of Pb(II) using rice husk activated carbon irradiated with ultrasonic waves and without irradiation. Determining the reaction kinetics model (reaction order and k values) of Pb (II) using rice husk activated carbon irradiated with ultrasonic waves. The results showed the optimum time on the adsorption process of Pb(II) by rice husk activated carbon is irradiated with ultrasonic waves were 50 minutes, whereas the adsorption process of Pb (II) by rice husk activated carbon without irradiated with wave ultrasonic is 30 minutes. Reaction kinetics of Pb(II) according to the pseudo-second-order kinetic model and the value of k2 = 0.0472 g. mg-1.min-1.

Uji Aktivitas Ekstrak Karang Lunak Sarcophyton sp Terhadap Staphylococcus aureus Andi Fatmawati
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Sarcophyton sp. is one kind of soft corals are today widely studied bioactive content as raw material for making drugs. Some research indicates that extracts Sarcophyton sp. Has many contain terpene compounds that function as antimicrobial, anticancer, antitumor, and anti-inflammantori. Research on Testing Activities Extract Coral Sarcophyton sp against Staphylococcus aureus has been done with the aim to determine the antimicrobial activity of extracts Soft Coral Sarcophyton sp against Staphylococcus aureus. Research conducted by the diffusion method, using iron cylinder diameter in the outer diameter of 6 mm and 8 mm, with an incubation period of 24 hours at 37° C. There are three test concentration of 5%, 10%, and 15% w/v, with the results of each inhibition zone average diameter: 8.91 mm, 9.92 mm and 11.18 mm. In this study a comparison is Tetracycline HCL is used as a positive control with a diameter of inhibition zone produced is 24.18 mm and Na.CMC 1% as a negative control. The results showed that the Soft Coral Sarcophyton sp extract can inhibit the growth of Staphylococcus aureus in consentration 5%, 10%, and 15% w / v. This study found that the higher concentration of the extract Soft Coral Sarcophyton sp has the higher of inhibitory power. The amount of concentration is directly proportional to the diameter of inhibition zone obtained.

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.

Desain Elektroda Selektif Ion Untuk Logam Timbal (II) (ESI-Pb (II)) Menggunakan Ionofor p-t-Butilkaliks [4] Arena Awaluddin IP; Abd. Wahid Wahab; Maming Maming
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

This study aims to determine the design pattern ESI-Pb (II) with ionophores pt-butilkaliks [4] arena. In this study, ion selective electrode is designed for the determination of lead (II) (ESI-Pb (II)) using ionophores pt-butilkaliks [4] arenas and diimmobilasi on a matrix of polyvinyl chloride (PVC) in the membrane ESI-Pb (II). The results showed a design pattern ESI-Pb (II) with ionophores pt-butilKaliks [4] arena is best to ESI with membrane composition (% by weight), namely: (pt-butilKaliks [4] arena: KTCPB: DOS: PVC) is 3 : 2: 60: 35 with the Nernst factor: 27.61 mV / decade

Analisis Proksimat pada Beras Ketan Varietas Putih (Oryza sativa glutinosa) Suriani Suriani
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

It has done research on Proximate Analysis On White Glutinous Rice Varieties (Oryza sativa glutinosa) Origin Sinjai Regency with the aim to determine the content prosimat include moisture content, ash content, crude proteincontent, fat content, crude fiber content and total carbohydrate content contained on white glutinous rice varieties (Oryza sativa glutinosa) origin Sinjai regency. This type of research is experimental research is a research laboratory that uses a simple experiment. At the proximate analysis includes determination of moisture content (%), protein content (%), fat content, ash content (%), crude fiber levels, total carbohydrate(%). The results showed that the water content ranges for % 16.24%, for protein content ranged from 6.81%, forfat content ranged from 0.19 % to 0.24% ash content ranges, for fiber content ranged from 0.28% and for carbohydrate content ranged from 76.24 %.

Adsorpsi Karbon Aktif Dari Tempurung Kluwak (Pangium edule) Terhadap Penurunan Fenol Abdul Rahman Arif; Asri Saleh; Jawiana Saokani
Al-Kimia Vol 3 No 1 (2015): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Relative concentration of phenol was increased with concomitant increase in the industry that produced phenol. It coused by level of phenol contamination in water rise was increased also. It was needed waste handling specialy for phenol waste. One of way in processed phenol waste was adsorption processed by using activated carbon. Pangium edule could be use as media of making activated carbon to decrease organic compounds specialy for phenol because pangium edule contained the element of carbon that was potential as activated carbon. Carbonization process was conducted by drum clamp while activation that used was acid phosphate (H3PO4), calium hydroxide (KOH) and natrium carbonat (Na2CO3). The determination of phenol concentration dissolved used spectrophotometer UV-Vis and then was tested with the Langmuir isotherm equation and Freundlich. The result of research shown that the largest of phenol removal effeciency of activated carbon obtained by activated carbon with activator calium hydroxide (KOH) on carbon doses 1,5 gram was 91,97% with phenol opening 300 mg/L.

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