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 238 Documents

1 2 3 4 5

Pengaruh Konsentrasi Aktivator Asam Klorida (HCL) Terhadap Kapasitas Adsorpsi Arang Aktif Kulit Durian (Durio Zibethinus) pada Zat Warna Methanil Yellow Supiati Supiati; Muh. Yudi; St Chadijah
Al-Kimia Vol 1 No 1 (2013): June
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Durian’s peel a waste which usually burned, stacked or discarded, which are unfavorable to environment. This condition motivates author to produce value-added products from the durian peel, such as activated carbon, as well as solving some 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 durian’s peel to the substance color of methanil yellow. Active carbon which is used in this research comes from durian’s peel which granular types with standard -100+40 mesh. Carbon is activated by physics in furnace with 400°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 durian’s peel is as large as 0,5350 mg/g. Whereas knowing the influence of activator is used tabulation method by statistically, where we can get F Hitung 0,004 is smaller from F Tabel 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 durian’s peel in substance methanil yellow.

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.

Waktu Dan Suhu Optimum Dalam Produksi Asam Oksalat (H2c2o4) Dari Limbah HVS Dengan Metode Peleburan Alkali Nurul Nurul; St. Chadijah; Kurnia Ramadani
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.v5i1.2847

Waste paper HVS can be used as raw material for the manufacture of oxalic acid containing 63 % cellulose. This study aims to determine the optimum time and temperature in the production of oxalic acid from waste paper with alkali fusion method. Oxalic acid can be made using an alkaline solution ( NaOH 40 % ) with multiple stages such as hydrolysis, filtration, precipitation with CaCl2, acidification with H2SO4 and efflorescence. The time variation used are 60, 70, 80 and 90 minutes. While the temperature variation used is 75oC, 90oC, 105oC and 120oC. From the research that has been done by using waste paper as much as 15 grams of HVS, the optimum time is on the 70th minute and the fusing temperature obtained by the temperature of 105oC. Weight of oxalic acid crystals obtained an average of 1.8043 g and yield of oxalic acid after permanganate test is obtained by 6.8537 %.

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%.

Isolasi dan Implementasi Protein Bioaktif Kepah (Atactodea striata) Sebagai Bahan Obat Antibakteri Tahirah Hasan; Abd. Rauf Patong; Abd. Wahid Wahab; M. Natsir Djide
Al-Kimia Vol 2 No 2 (2014): Desember
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

This study aimed to 1) determine the degree of saturation of ammonium sulfate right to extract and purify the bioactive protein from shells (Atactodea striata), 2) determine the fraction of active protein from shells (Atactodea striata) as a potential antibacterial. In this study used the Lowry method for determine protein concentration and agar diffusion method for antibacterial activity. Extraction of shells Atactodea striata was conducted by making use of buffer solution (0,1 M Tris-HCl of pH 8.3, 2 M NaCl, 0.01 M CaCl2, 1 % β-mercaptoethanol, and 0.5 % Triton X-100). Purification of proteins by precipitation using ammonium sulfate at saturation level 30 %, 50 %, 70 %, and 90 %. The results showed that the protein concentration of the crude extract is 41.6354 mg/mL. At fractionation rate of 0-90% saturation showed the highest concentration of protein found in fractions with 70% saturation level is 56.4184 mg/mL. The testing of antibacterial activity against Staphylococcus aureus showed that crude extracts and protein fractions Atactodea striata is considered effective as an antibacterial. The highest bioactivity during 24-hour incubation in protein fractions obtained by ammonium sulfate saturation level of 50% is 25.17 mm. Whereas the lowest activity was obtained at 90% saturation level is 14.05 mm. Bioactivity against Escherichia coli after incubation for 24 hours has the highest activity in the protein fraction with 30% ammonium sulfate saturation is 15.12 mm. Whereas the lowest activity was showed at 70% saturation level is 10.30 mm. After the observation was continued for 48 hours on both test bacteria, which formed a clear area becomes cloudy. It shows that the crude extract and fractions of protein tend to be bacteriostatic against Staphylococcus aureus and Escherichia coli.

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.

Aktivitas Antioksidan Ekstrak Metanol Madu Cair dan Madu Bubuk Lokal Indonesia La Ode Sumarlin; Achmad Tjachja; Riana Octavia; Nur Ernita
Al-Kimia Vol 6 No 1 (2018): 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.v6i1.4333

Determination of antioxidant activity of methanol extract in local Indonesian liquid and powdered honey has been performed. The present study was intended to investigate the antioxidant activity and the phenolic, flavonoid, vitamin C content in methanol fraction of liquid and powdered honey. Powdered honey was produced using spray-drying technology with gum arabic as filler. Moreover, the levels of water, HMF and reducing sugar was also determined as the honey quality parameter. The result of the present research shows that powdered honey had antioxidant activity. Ekstrak Madu Kelengkeng Bubuk (EMKB) and Ekstrak Madu Rambutan Bubuk (EMRB) had antioxidant activity with IC50 values of 5621,62± 286,55 and 10293,88 ±14,04 mg/L, respectively. The antioxidant activity of Kelengkeng (EMKB) and Rambutan (EMRB) honey increased after the change to powder form 71.19% and 49,32 %, respectively. EMKB sample with the highest antioxidant activity has the highest total flavonoid content values (0,079±0,001 mg QE/g). The vitamin C content of the EMKB sample was 0.292 ± 0.000 mg/g, higher than the EMRB sample of 0.086 ± 0.005 mg/g. Powdered honey that produced had a decrease in water content values 50%. The water and hydroxymethyl furfural content of all sample comply with SNI 01-3545-2013, except the reducing sugar content.

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.

Senyawa Disobinin yang Bersifat Antimalaria dari Biji Tumbuhan Chisocheton macrophyllus (Meliaceae) Nurlelasari Nurlelasari; Desi Harneti PH; Unang Supratman
Al-Kimia Vol 4 No 2 (2016): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

Disobinin compounds have been isolated from the seeds Chisocheton macrophyllus (Meliaceae). The chemical structure of compounds disobinin identified based on data covering UV spectroscopy, IR, 1D-NMR, 2D-NMR and mass spectra as well as the comparison with the data obtained from the literature. Disobinin compound showed antimalarial effect against P. falcifarum with IC50 values from 0.001 to 0.01 mg/mL . Limonoids compound, disobinin reported for the first time in the genus of Chisocheton.

Fitoremediasi Tanaman Rumput Benggala (Panicum Maximum Jacq) Terhadap Logam Kadmium (Cd) Sintetik dan Tanah TPA Tamangapa Antang Makassar A. Reskianti Wardani; Syamsidar HS; Aisyah Aisyah
Al-Kimia Vol 1 No 2 (2013): December
Publisher : Study Program of Chemistry - Alauddin State Islamic University of Makassar

One way to reduce the pollution of soil is by using phytoremediation. In this study phytoremediation methods used to remediate the landfill Antang Makassar using wild plants Bengal grass (Panicum maximum Jacq) in metals accumulate Cd. Growing media used were pure land Antang landfill waste with the addition of a synthetic variation of Cd concentration of 2 ppm, 4 ppm, 6 ppm, 8 ppm and pure contaminated soil without the addition of synthetic waste. From the results obtained, the lower Cd concentrations of synthetic wastewater were added, the higher the absorption, the absorption maximum occurs on the addition of synthetic wastewater with concentration of 4 ppm Cd on day 7, is 0.0608 mg/Kg.

Page 3 of 24 | Total Record : 238

1 2 3 4 5

Filter by Year

2013 2025

Filter By Issues

All Issue Vol 13 No 1 (2025): JUNE Vol 12 No 2 (2024): DECEMBER Vol 12 No 1 (2024): JUNE 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