Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

Al-Kimia

al-kimia
Website

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

Search results for , issue "Vol 4 No 1 (2016): June" : 10 Documents clear

Isolasi Karakterisasi T Asam Humat dan Penentuan Daya Serap Nya Terhadap Ion Logam Pb(II) Cu(II) dan Fe(II) Yati B Yuliyati; Christi Liamita Natanael
Al-Kimia Vol 4 No 1 (2016): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Coal, which are decomposition resulted of natural biological processes over the years in which the humic acid compound contained. The purposes of this research was tocharacterize and to compare the humic acid of coal from South Borneo. The isolation of humic acid by leaching process uses natrium karbonat 0.1 N and fractionation uses sulfuric acid 6M. The fraction was purified and the deposit was washed by sulfuric acid 1 M, aquadest and ethanol. Moisture content, ash content, cation exchange capacity, C/N ratio and E4/E6ratiowithspectroscopy were characterized. The yields of humic acid areobtained 12.35% of coal. C/N ratio of humic acid 20.72. The infrared spectroscopy results of humic acid from coal figures more of aromatic and -OH group with lower E4/E6 ratio, while from peat soil shows more of aliphatic and carboxylic group supported higher E4/E6 ratio. Kapasitas tukar kation 640,59 mek/100g; dan mempunyai daya serap terhadap ion logam yang cukup baik.

Sintesis Heptapeptida Linear (H-Tyr-Asp-Pro-Ala-Pro-Pro-Pro-Oh) dengan Menggunakan Dic/Oksima sebagai Reagen Pengkopling Rani Maharani; Eka Fitri Yanti
Al-Kimia Vol 4 No 1 (2016): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

A tetrapeptide, an analog of trypsin-modulating oostatic factor (TMOF), has been synthesised by using a method of solid-phase peptide synthesis on 2-chlorotrityl chloride resin. Fmoc strategy was applied on the synthesis. The formation of peptide bond was facilitated by DIC/oxime as coupling reagent. After all of amino acids were attached on the resin, tetrapeptidyl resin was added by a mixture of TFA:water:EDT(90:5:5) in dichloromethane to cleave the peptide.Crude peptide was purified by reverse-phase column chromatography and the purified peptide was analysed by TOF ES-MS spectroscopy.

Bioaktivitas Ekstrak Metanol Daun Pegagan (Centella Asiatica L.) Terhadap Pertumbuhan Bakteri Mycobacterium Tuberculosis Yusran Yusran; Asriani Ilyas; Asri Saleh
Al-Kimia Vol 4 No 1 (2016): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Plants gotu kola (Centella Asiatica L .Urban) is a wild plant that efficacious as remedies traditional cure disease tuberculosis (TB).TB is disease contagious infection caused by bacteria mycobacterium tuberculosis. Research aims to understand the ability extract methanol leaves gotu kola red and leaves gotu kola green and determines the concentration optimal extract methanol leaves gotu kola red and leaves gotu kola green and to know the comparison between extract methanol leaves gotu kola red with an extract methanol leaves gotu kola green in inhibits the activity of mycobacterium tuberculosis.Extraction done with the methods maceration use methanol and continued with evaporation until obtained extract viscous .Testing antibacterial activity done in a microscopic observation drug susceptibility ( mods ) use plate petri dish 24 hole with the variation of concentration ie 20%,40%, 60%, 80% and 100%.The results of testing show that extracts methanol leaves gotu kola red and leaves gotu kola green positive capable of inhibiting the growth of bacteria mycobacterium tuberculosis with inhibition optimal in concentration 80 % and 100 % characterized by the absence of growth bacteria colonies which are (-) or 0 %.Extract methanol leaves gotu kola green capable of inhibiting the growth of bacteria mycobacterium tuberculosis better than extract methanol leaves gotu kola red seen in concentration 40% and 60%.

Studi Pengurangan Cemaran Gas Buang Sulfur Dioksida (So2) dari Emisi Cerobong Pabrik Nikel dengan Menggunakan Senyawa Kimia Penjerapamonium Hidroksida Agus Dina; M. Sjahrul; Muhammad Zakir; Dadang Dadang
Al-Kimia Vol 4 No 1 (2016): 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.v4i1.1765

Research on absorption of gaseous SO2 from factory emissions of nickel ore industry using solution of ammonium hydroxide has been done. Research conducted with variations including concentration, temperature, and time of contact. Variation of the concentration used were 1%, 2%, 3%, 4% and 5%; while variations of the temperature used were 20oC, 25oC, 30oC, 35oC, and 40oC; and the contact time were 10, 15, 20, 25 and 30 minutes. SO2 gas emissions sampling is done at a time when the factory operates at flow velocity and temperature conditions exhaust gas emissions. Results showed the greater concentration of the solution absorbing the greater the concentration of sulfur dioxide gas absorption, absorption temperature range between 30° C-40° C, and the longer the absorption of the greater number of SO2 absorption. A comparison of the percentage of the results of the average accumulation of absorption between absorbent solution (ammonium hydroxide) and slurry of calcium carbonate to reduce sulfur dioxide emissions to ambient air showed results still under the limestone slurry i.e. absorption capability comparison 95.00%: 62,91%. Difference in SO2 gas that is not absorbed out as emissions are still on top of the raw set quality standard (750 mg/m3). The gas is absorbed to form ammonium sulphate compounds that could be accommodated and packaged for commercialized as a by-product in the form of inorganic fertilizers valued economically. As such, ammonium hydroxide is used as an alternative to allow compound absorbent and produces no side residue so that the result is considered safe for the environment.

Identifikasi Isolat Bakteri Termofilik dari Sumber Air Panas Lejja, Kabupaten Soppeng Rafiah Mahmudah; Maswati Baharuddin; Sappewali Sappewali
Al-Kimia Vol 4 No 1 (2016): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Identification of bacterial isolates local termofilik at hot springs is the first step of a series of studies of the exploration and utilization of indigenous bacteria an area. This research aims to know the bacterial isolate bacteria from the genus termofilik in the hot springs at Soppeng Lejja and know the optimum incubation time and temperature on the growth of bacterial isolates termofilik from hot springs, Soppeng Regency Lejja. The methods used in the study include the creation of media, rejuvenation, the identification of isolates of bacteria. Bacterial identification to genus level based on Bergey's Manual of Determinative Bacteriology are done with different test, namely: gram staining test, oxidation test, fermentation test, carbohydrates test, SIM test, TSIA test, Mr/Vp test, citrat test and urea test. The results showed that bacterial isolates identified as termofilik in the genus Pseudomonas sp, which is a gram-negative, rod-shaped cells against oxidation test, positive, negative and red metyl test against a test fermentation. indol, motility, citrate, urea and the production of H2S.

Fitoremediasi Logam Kadmium (Cd) dari Asap Rokok Menggunakan Tanaman Puring (Codiaeum Variegatum) Kurniawati L; Syamsidar HS; Kurnia Ramadani
Al-Kimia Vol 4 No 1 (2016): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Environmental problems in Indonesia even in the world of growing. One of the factors causing the environmental problems with surging smoking habits in society that cause air pollution. One of the pollutants generated from cigarette smoke is a cadmium (Cd) metal. One of the efforts made in reducing pollutants in the air, especially Cd metals is phytoremediation method using plant croton (Codiaeum variegatum). This study aims to determine the ability of plants to absorb Cd metals croton. The method is performed by directly exposure at 3, 6 and 9 days. Instrument used in this study is an atomic absorption spectrophotometer (AAS). The results showed that the croton leaves absorb Cd metal with a maximum concentration of 1,065 mg/kg on days 9, so that it can be used as Cd metal phytoremediator

Penentuan Unsur Tanah Jarang Kelompok Sedang secara Voltammetri Pindai Linier Menggunakan Elektrode Grafit Pensil Yeni Wahyuni Hartati; Elsa Nur Utami; Diana Hendrati; Titin Sofyatin
Al-Kimia Vol 4 No 1 (2016): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Rare earth elements play an important role in a variety of applications, mostly for high-tech industries. But their presence in mineral jointly separation makes it difficult to determine the content of rare earths because each element has physical and chemical properties are almost identical. The purpose of this study is the use of a linear scan voltammetry method to study the electrochemical characteristics of the medium rare earth element group (Sm, Gd, Eu, Tb), as an alternative method of separation and analysis of rare earth elements. The electrode used is a graphite pencil electrodes without modification, with a variety of supporting electrolyte. The results obtained show some supporting electrolyte provides good reduction peak for gadolinium, compared to the peaks of the reduction potential of the single rare earth ions other. The potential range of the most well using pencil graphite electrode obtained at 0.50 V to -1.00 V. Analysis of single gadolinium provide linear regression equation in a concentration range of 4.0 to 10.0 mg/L by the equation Y = 0.9862 X + 0.828 with R2 = 0.9954. The limit of detection is determined from the linear regression obtained 0.72 mg / L.

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).

Sintesis Metil Ester dari Minyak Biji Kemiri (Aleurites Molluccana) Menggunakan Metode Ultrasonokimia Rahmawati Aziz; Aisyah Aisyah; Asriani Ilyas
Al-Kimia Vol 4 No 1 (2016): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Using the fuel oil is the basic necessary in the world now. But, the raw material cannot be updated. To ensure the availability of the fuel oil so, the newest of alternative energy is explored it. One of the ways is biodiesel which made from vegetable oil. In this research is resulted from the transesterification reaction between candlenut oil and methanol by utilizing ultrasonic equipment. This research has passed some phases, they are the determining of acid number in oil then continued by creating biodiesel from ultrasonic wave 47 kHz. Identification of FTIR and GCMS are two methods which used to analyze the component compound in biodiesel product. The conversion number that be gotten from FAME with reaction of variation time 30, 40 and 50 in succession 0,037%, 0,029% and 0,018%. The result analysis of FTIR shows some of functional groups which are special from biodiesel. While the result of GCMS analysis is known that there are 5 component compounds in biodiesel namely ester methyl palmitic acid, ester methyl olead, stearata ester methyl, linoleic ester methyl and elaidic ester methyl.

Analisis Antioksidan Ekstrak Etil Asetat Dari Kulit Buah Rambutan (Nephelium Lappaceum) dengan Menggunakan Metode dpph (1,1 difenil-2-pikrilhidrakzil) Nurfadillah Nurfadillah; St Chadijah; Waode Rustiah
Al-Kimia Vol 4 No 1 (2016): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Rapiah rambutan fruit leather (Nephelium lappaceum) is one of the traditional medicine to cure various diseases such as fever and dysentery. Scientific research previously stated rambutan fruit peel skin Rapiah rambutan (Nephelium lappaceum) potentially have antioxidant content. Through this research can know the effect of solvent ethyl acetate to extract optimal rambutan fruit skin in antioxidants withdrawal. The method used for extraction is macerated using methanol and partitioned with liquid-liquid extraction using ethyl acetate solvent with a ratio (1:3), (1:4) and (1:5) which produces a thick rind extract rambutan. The extract was tested color and separated by thin layer chromatography (TLC) using the eluent butanol: glacial acetic acid: water (BAA) (4: 1: 5). Antioxidants are determined by testing against DPPH free radicals by measuring the absorbance of DPPH (1,1-diphenyl-2-pikrilhidraksil) at a wavelength of 517 nm. So that the results of this study showed the highest % reduction obtained at a ratio (1:3).

Page 1 of 1 | Total Record : 10

Filter by Year

2016 2016

Filter By Issues

All Issue Vol 11 No 2 (2023): DESEMBER Vol 11 No 1 (2023): JUNE Vol 10 No 2 (2022): DECEMBER Vol 10 No 1 (2022): JUNI Vol 9 No 2 (2021): DESEMBER Vol 9 No 1 (2021): JUNE Vol 8 No 2 (2020): DECEMBER Vol 8 No 1 (2020): JUNE Vol 7 No 2 (2019): DECEMBER Vol 7 No 1 (2019): JUNE Vol 6 No 2 (2018): December Vol 6 No 1 (2018): JUNE Vol 5 No 2 (2017): December Vol 5 No 1 (2017): June Vol 4 No 2 (2016): December Vol 4 No 1 (2016): June Vol 3 No 2 (2015): December Vol 3 No 1 (2015): June Vol 2 No 2 (2014): Desember Vol 2 No 1 (2014): June Vol 1 No 2 (2013): December Vol 1 No 1 (2013): June More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kab. gowa,

Sulawesi selatan

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official -

Editorial Address -

Location Kab. gowa, Sulawesi selatan INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kab. gowa,

Sulawesi selatan

INDONESIA