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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 8 No 2 - December 2015" : 5 Documents clear
UTILIZATION OF ETHYL ACETATE FRACTION KETAPANG LEAF (Terminalia catappa) AS BIOREDUCTOR IN SYNTHESIS GOLD NANOPARTICLES AND ANALYSIS ANTIBACTERIAL PROPERTIES Sarwina Hafid; Muhammad Zakir; Seniwati Dali
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 8 No 2 - December 2015
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v8i2.2470

Abstract

Gold nanoparticles was synthesized by bioreduction method using ethyl acetate fraction of ketapang leaf (Terminalia catappa). Nanoparticles formed were characterized using spectrophotometer UV-Vis, Fourier Transform Infra Red (FTIR) and X-Ray Diffraction (XRD). In the   analysis   of   spectrophotometer   UV-Vis   gold   nanoparticles   with   a   precursor   solution concentration of 0.5 mM and 1 mM each has an absorption between 533.5-540 nm and 539-587 nm. Analysis of functional groups of gold nanoparticles was analyzed by Fourier Transform Infra Red (FTIR). Crystal system of gold nanoparticles is cubic with nanoparticles size of 17.13 nm. The evaluation of test antibacterial activity was performed using several bacteria test such as Staphylococcus aureus, Escherichia coli, and Bacillus subtilis. Gold nanoparticles can not inhibit the activity of a test bacterium Staphylococcus aureus, Escherichia coli, and Bacillus subtilis so that differences in the concentration of gold nanoparticles did not affect the inhibition of bacteria.
ELECTRODEPOSITION OF Cu ON THE SURFACE OF SILICA FREE RICE HUSK ACTIVATED CARBON WITH ULTRASONIC IRRADIATION Ryan Andhika; Muhammad Zakir; Maming Maming
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 8 No 2 - December 2015
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v8i2.2471

Abstract

Electrodeposition of Cu on the surface of silica free rice husk activated carbon with ultrasonic irradiation aimed to increase the value of specific capacitance was carried out. Silica free rice husk activated carbon was synthesized using H3PO4  activator and extraction of silica using KOH. The surface area of rice husk carbon was obtained before and after the extraction of silica and after activation were 57.2833 m2/g, 180.5378 m2/g and 184.6074 m2/g, respectively. XRF analysis showed that Cu depositioned on the surface of silica free rice husk activated carbon and based of CV measurements showed that electrodeposition of Cu with ultrasonic irradiation can increased the value of specific capacitance. Specific capacitance of silica free rice husk activated carbon before and after electrodeposition of Cu with ultrasonic irradiation were 657.75 nF/g and 721.08 nF/g, respectively.
THE USE OF MCM-48-nCaO AS CATALYST IN ESTERIFICATION REACTION OF NYAMPLUNG SEED OIL (Calophyllum inophyllum L.) La Kolo; Firdaus Firdaus; Paulina Taba
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 8 No 2 - December 2015
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v8i2.2466

Abstract

A study on the use of MCM-48-nCaO as a catalyst in the esterification reaction of nyamplung seed oil (Calophyllum inophyllum L.) has been carried out. The characterization results of XRF, XRD and FTIR showed the success in the synthesis of heterogeneous catalysts, MCM-48- nCaO, using a grinding-impregnation method. Through esterification reaction using the catalysts, FFA content in the seed oil of nyamplung reduced from 28 to 1.7%.
PHYTOCEMICAL ANALYSIS AND ANTI OKSIDANT ACTIVITY OF THE WOOD ETHANOLIC EXTRACTS OF SIRIH HUTAN (Pipe aduncum) Erwin Erwin
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 8 No 2 - December 2015
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v8i2.2468

Abstract

Sirih hutan (Piper aduncum) grew evenly in the tropical rain forests of East Kalimantan; it was used as a drug itching by local people. The present study is aimed to determine the chemical content and evaluate the free radical scavenging potential antioxidant activity of the extract of Sirih hutan wood. Based on the results of the GC-MS of the wood extract of Sirih hutan consists of 11 compounds. The inhibition of DPPH scavenging free radicalst of extract in ethanol preparations is IC50 259.74 ppm.
Synthesis and Characterization of Chitosan Nanoparticles from theshells of crabs(Portunus pelagicus) and Application as Antimicrobial Fatahu Fatahu; Hasnah Natsir; Paulina Taba
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 8 No 2 - December 2015
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v8i2.2469

Abstract

Chitosan was modified into nanoparticle chitosan in order to increase its absorptivity and solubility in water so that it can be applied in various fields. The objective of this research was to produce nanometer-sized chitosan, to characterizethe functional groups and the particle size of chitosan  as  well  as  to  test  its  antimicrobial  activity.  Chitosan  nanoparticles  were  synthesized through ionic gelation method by reacting chitosan with tripolyphosphate ions through ionic cross- linking reaction. The functional groups of chitosan were determined from its FTIR spectrum, the particle size was obtained from its X-ray diffractogram  and particle size analysis (PSA). Chitosan nanoparticles  with  the  smallest  size  based  on  XRD wereobtained  at  a  concentration  of  0.1% chitosan (CNPs 1) and chitosan 0.2% (CNPs 2) with the addition of 0.1 % tripolyphosphate ion. The sizes of chitosan nanoparticles,CNPs 1 and CNPs 2,obtained from the analysis of PSA were 224.68 and 204.32 nm, respectively. Polydisperse index value (pdi) of chitosan nanoparticles produced  were  0.226  and  0.261  (pdi  <0.5),  respectively.  The  results  indicate  that  chitosannanoparticles synthesized havehomogeneous particle size distributions. The test results against four types of pathogens showed that CNPs 2 had inhibitory activity against the three types of microbes, Staphylococcus aureus, Pseudomonas aeruginosa, and Malassezia furfur, but it was not active against the fungus of Candida albicans.

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