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INDONESIA
Indonesia Chimica Acta
Published by Universitas Hasanuddin
ISSN : 2085014X     EISSN : 26556049     DOI : -
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) is a peer-reviewed research journal that is devoted to the dissemination of new and original knowledge in all branches of chemistry. The result of research and development in the fields of chemistry in both experimental and theory/ computation, chemical-based technological innovations, and chemical applications in industrial fields. The journal publishes original research articles or review articles in organic chemistry, inorganic chemistry, analytical chemistry, physical chemistry, biochemistry, and environmental chemistry.
Arjuna Subject : -
Articles 6 Documents
 1 
Search results for , issue "Volume 12, No 2: December 2019" : 6 Documents clear
Extraction Cellulose From Rice Husk Muhammad Arham Yunus
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 12, No 2: December 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v12i2.6559

Abstract

Abstract. Cellulose from rice husk has been successfully synthesized. Rice husk is an abundant agricultural waste and has a high cellulose content. Bioconversion of rice husk into cellulose begins with the stages of delignification and bleaching. The resulting cellulose was characterized using FTIR and XRD. The IR spectra show a strong absorption peak at 3444.87 cm− 1 which is associated with stretching vibrations O − H (hydrogen bonds between molecules), absorption peaks at 1033.85 cm− 1 are identified as stretching C − O − C which is β bond −1,4 glycosidic from cellulose. XRD shows the particle size of cellulose which is 3.44 nm and has crystallinity of 58.73%. These results indicate that cellulose from rice husk has good characteristics.              Keywords: Rice Husk, Cellulose, FTIR, XRD
Phytocimia Test And Antibacterial Bioactivity Of Extracts from Stem Bark of Artocarpus integer (Thunb.) Merr Liska Hamzah
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 12, No 2: December 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v12i2.7214

Abstract

This research aims to identify the compound group and determine the antibacterial activity of n-hexane, chloroform, and methanol fractions of Artocarpus integer (Thunb.) Merr stem bark. All fractions contain groups of terpenoid and steroid compounds. Antibacterial activity was detemined using agar diffusion method with MHA (Muller Hinton Agar) media on Escherichia coli (gram negative) and Staphylococcus aureus (gram positive). Ciprofloxacin was used as a positive control and methanol as a negative control. The three fractions were able to inhibit the growth of Escherichia coli and Staphylococcus aureus. The chloroform fraction showed the highest activity after 48 hours incubation with inhibition zones of 10.8 and 10.4 mm respectively.
α-Glucosidase Inhibitory Activity Of Cucurbitane Derivate Isolated From Methanol Extract Of Momordica charantia L. Leaves Andi Fikrah Auliya Pamenta
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 12, No 2: December 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v12i2.8341

Abstract

Cucurbitane derivative has been isolated from methanol extract of the leaves of bitter melon (Momordica charantia). Purification of methanol extract using vacuum column chromatography method using n-hexane: ethyl acetate as the mobile phase was obtained a white powder isolate. This isolate was elucidated to obtain chemical structures based on spectroscopic data (FT-NMR, FT-IR, and LC-MS/MS) and resulted a cucurbitane derivate, namely momordicine I. The MeOH extract and the isolate were evaluated for α-glucosidase inhibitory effect. Both MeOH extract and momordicine I showed moderate activities with %inhibition 27.34% and 15.79 % at 100 µg/mL repectively.
Synthesis Of Glycerol Carbonate From Glycerol And Urea Using Limestone As Catalyst Source Megawati Megawati
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 12, No 2: December 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v12i2.8096

Abstract

Synthesis of Glycerol carbonate from glycerol and urea using limestone as a catalyst has been conducted. This study aims to make glycerol carbonate from glycerol and urea by utilizing scattered natural limestone widespread in Southeast Sulawesi as a catalyst source. The catalyst was obtained from the calcination of natural limestone to decompose CaCO3 to CaO. This condition added to glycerol and urea to test the catalyst activity. Synthesis of glycerol carbonate was carried out through the carbamoylation reaction of glycerol with urea. The advantage of this method is the reaction carried out with free solvents and running in ambient pressure (1 atm). The stages of catalyst testing in the reaction of glycerol carbonate formation were carried out by reacting glycerol, urea, and calcined limestone  with  1: 1 substrate mole ratio with a catalyst concentration of 5% mass over glycerol. Characterization used was Fourier Transform Infrared Spectroscopy (FTIR) and supported by Gas Chromatography (GC) data. Optimization catalysis reaction was obtained at a temperature of 140oC for 4 hours and  using a catalyst mole ratio to 5% substrate
Effect Of The Contact Time Of Candlenut Shell Charcoal And H3PO4 Activator As On The Purification Process Of Used Cooking Oil Yustina Bapa; Loth Botahala
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 12, No 2: December 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v12i2.7889

Abstract

Research on Comparison of the Contact Time of Candlenut Charcoal with H3PO4 Activator in the Process of Purifying Used Cooking Oil has been conducted. The purpose of this study was to determine the ability of candlenut shells activated with H3PO4 against purifying used cooking oil. The variation of the number of candlenut shells used is 1 gram, 2 grams, and 3 grams and the variation of contact time is 10 minutes, 30 minutes and 60 minutes. The results showed that the activation of hazelnut shell using H3PO4 fulfills SNI 16-3730-1995, while the results of used cooking oil purification with 2 grams of activated charcoal in 60 minutes resulted in a decrease in peroxide number of 64.58% and free fatty acids of 54, 84%.
Effect Of The Contact Time Of Candlenut Shell Charcoal And H3PO4 Activator As On The Purification Process Of Used Cooking Oil Bapa, Yustina
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 12, No 2: December 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v12i2.7889

Abstract

Research on Comparison of the Contact Time of Candlenut Charcoal with H3PO4 Activator in the Process of Purifying Used Cooking Oil has been conducted. The purpose of this study was to determine the ability of candlenut shells activated with H3PO4 against purifying used cooking oil. The variation of the number of candlenut shells used is 1 gram, 2 grams, and 3 grams and the variation of contact time is 10 minutes, 30 minutes and 60 minutes. The results showed that the activation of hazelnut shell using H3PO4 fulfills SNI 16-3730-1995, while the results of used cooking oil purification with 2 grams of activated charcoal in 60 minutes resulted in a decrease in peroxide number of 64.58% and free fatty acids of 54, 84%.

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