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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 5 Documents
 1 
Search results for , issue "Volume 10, No.2: December 2017" : 5 Documents clear
Utilization of Ketapang Leaf Etil Asetic Fraction (Terminalia catappa) as A Bioreductor In Synthesis of Silver Nanoparticles and Analysis of The Antibacterial Properties Nursyamsi Nursyamsi; Muhammad Zakir; Seniwati Dali
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.2: December 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i2.6864

Abstract

Silver nanoparticles had been synthesis conducted in reduction method by using ethyl acetat fraction of catappa leaf (Terminalia catappa) as bioreductor. Silver nanoparticles was characterized by UV-Vis, FTIR and PSA measurement. The results showed that absorbance values increased with the increase of AgNO3 concentration. Maximum absorption of silver nanoparticles 1 mM dan 2 mM silver nanoparticles between 418-436,5 nm and 421-434 nm respectively. Functional groups that contribute in the synthesis was analyzed using Fourier Transform Infrared Spectroscopy (FTIR). Particle size was determined by using PSA. The result showed that 1 mM and 2 mM of silver nanoparticles were 53 nm dan 158 nm respectively. Antibacterial testing conducted by using agar diffusion method against Staphylococcus aureus, Basillus subtilis dan Escherichia coli activity inhibition diameter zone were 7,2 mm, 6,9 mm and 6,6 mm with incubation period was 48 hours.
Characterization of Compounds From Extract of Leaf Cloroform Melochia umbellata (Houtt.) Stapf var. Degrabrata K. and Test Antihiperglicemic Activities Imran Imran; Nunuk Hariani Soekamto; Hanapi Usman
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.2: December 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i2.6650

Abstract

A research on the characterization of the chloroform extract of leaves of M. umbellata (Houtt.) stapf var. degrabrata K. and activity test as antihyperglycemic has been done. This study aimed to isolate and characterize compounds from chloroform extract and determine the optimum concentration of chloroform extract in  reducing blood glucose levels. Isolation compound from chloroform extract has been done by maceration, fractionation and purification. Based on the data of IR and NMR spectroscopic, compounds isolated from this research were β-sitosterol and fatty acid compound consisting of 25 carbon atoms. The glucose tolerance test, concentration of 6% showed a decrease in glucose levels almost equivalent with drug glibenclamide as comparator.
Utilization of Chicken Feather Biomass As Metal Zinc Adsorbent (Zn2+) Djama’an Noer Hidayat; Maming Maming; Syarifuddin Liong
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.2: December 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i2.6651

Abstract

Chicken feather is a waste that can be used as an alternative to adsorbents that can be used to overcome environmental pollution in waters containing heavy metal pollutants, especially on metal Zn (II) ions, Biomass Chicken Feathers using NaOH and Na2SO3 as adsorbent activation and proven using FTIR spectrophotometer . The metal adsorbent of Zn (II) ion by chicken feather biomass has been influenced to the variation of pH of the solution, mass of adsorbent, contact time, and concentration of chicken feather biomass. The method used is the method of "batch" and the metal concentration of Zn (II) ions measured by an atomic absorption spectrophotometer (AAS). Optimal variations that have been achieved under conditions of pH 6, adsorbent mass 0.7 gram, contact time for 80 minutes, and optimal concentration at 100 ppm with absorption of Zn (II) metal on chicken feather biomass of 6.04 mg/g. The metal adsorbent Zn (II) using chicken feather biomass is more in line with the Langmuir isothermal model with an adsorption capacity (Qo) value of 6.45 mg/g.
Thermophilic Xylanase Production Rom Isolates of Macula’ Hot Springs Bacteria Using Corn Cobs Waste Media Lupita Denta Putri; Hasnah Natsir; Seniwati Dali
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.2: December 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i2.6652

Abstract

Xylanases is an extracellular enzyme that has prospects as enzymes that hydrolyze hemicellulose (xylan). In this study, carried out isolatied of bacteria from the hot springs Makula', Tana Toraja and determine the optimum conditions in producing the xylanase enzyme. The steps being taken are the rejuvenation of bacteria, the manufacture medium inoculum and the production medium, the measurement OD (Optical Density) measurements of protein and testing activities xylanase. The results obtained showed that the production time for B. stearothermophilus SL3A is in the 48 hours with a value of 0.1237 activity mU/mL and B. stearothermophilus SL3S at the 60 hours with a value of 0.1593 activity mU/mL. B. stearothermophilus SL3A have a protein content of 9.828 mg/mL and for B. stearothermophilus SL3S have a protein content of 10.07 mg/mL. Characteristics bacterial xylanase from B. stearothermophilus SL3A and B. stearothermophilus SL3S work optimally at pH 7 a temperature of 45 ºC. Crude extract of the isolated xylanase enzyme can hydrolyze substrate is xylan corn cobs. The addition of metal CaCl2, MgCl2, CaCl2 can increase the activities of the enzyme xylanase and CoCl2 decreases the activities of enzymes that are inhibitors.
Synthesis and Characterization of Rise Husk Nanopores Carbon Through Ultrasonic Irradiation With H3PO4 Activators as Electrochemical Energy Storage Materials Sitti Rahmah; Muhammad Zakir; L. Musa Ramang
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.2: December 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i2.6653

Abstract

The research on synthesis and characterization of carbon nanopores rice husk through ultrasonic irradiation by activators H3PO4 as electrochemical energy storage material has been made. This activated carbon is a basic material in making electrodes which will be developed into electrochemical energy storage material. Nanopores carbon is made from rice husks, which passes through three stages of the process and the development  methods of manufacturing of previous activated carbon. Carbonization carried out at a temperature of 350 oC, then add the HF with the aim to remove silica from the carbon in order to increase its surface area, and chemical activation with H3PO4. Furthermore, the modified carbon through ultrasonic irradiation. Characterization of the surface of activated carbon is done through the analysis of XRD and XRF, characterization of functional groups by FTIR, surface area determination by the method of methylene blue, as well as the specific capacitance measurement with CV. The results showed the addition HF can remove carbon silica in rice husks. The element largest of the active carbon with ultrasonic wave irradiation is Ca or  oxide CaO by 46,43 %, which has a crystallinity of phase with relatively mesoporous carbon pores. The surface area of activated carbon rice husk with irradiation of ultrasonic waves in optimum condition at a temperature of 30 ° C for 60 minutes which is 184.348426 m2 / g. The value of the specific capacity of the activated carbon energy storage rice husks with and without irradiation of ultrasonic waves each is 1067,75 nF/g and 622,17 nF/gram.

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