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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 13 Documents
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Search results for , issue "Volume 13, No 2: December 2020" : 13 Documents clear
Biosynthesis and Characterization of Silver Nanoparticles Using Cacao (Theobroma cacao L) Skin Extract Irham Pratama Ridwan
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 13, No 2: December 2020
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v13i2.11602

Abstract

Synthesis of silver nanoparticles has been successfully carried out using extracts of cocoa pod (Theobroma cacao L). Silver nanoparticles were synthesized using the green synthesis method. Biosynthesis was carried out by mixing 1 mM 40 ml AgNO3 solution with 0.5 ml of cocoa pod husk extract, stirring for 1 minute, after a few minutes the solution will change color from yellowish to dark colored, the color change that occurs shows the ion reduction process so that silver nanoparticles are formed. When silver nanoparticles are formed, the UV-Vis absorption spectrum is at a wavelength between 400-500 nm. Characterization and stability using a UV-Vis spectrophotometer with a time variation of 4 hours, 24 hours, 3 days and 7 days of reduction time. With increasing time the resulting long wave gets higher and bigger the size of the aggregation. Sample (1) shows 446, 446, 446, 447.5 nm, obtained a maximum wavelength of 447.5 nm, repeated repetition is labeled sample (2) shows 447, 446.5, 450, 449.5 nm with a maximum wavelength of 495 , 5 nm seen from the wavelength value tends to be stable so there is no need to add a stabilizing agent. The absorbance value increases with time, the greater the absorbance value, the more nanoparticles formed
A Synthesis and Characterization of Gold Nanoparticles Using The Bioreductor Bay Leaf (Syzygium polyanthum) Muhammad Fathir Hasyim
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 13, No 2: December 2020
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v13i2.11798

Abstract

Bay leaf extract has been used successfully in the synthesis of gold nanoparticles. This is indicated by the color change from the gold solution which is yellow to burgundy after the addition of the bay leaf extract and the resulting wavelength is in the range of 500 - 550 nm which indicates that gold nanoparticles have been formed. The growth and stability of the resulting gold nanoparticles were observed using UV-Vis Spectroscopy. Particle Size Analyzer (PSA), Scanning Electron Microscope (SEM), X-Ray Spectrometer Diffractometer (XRD) and Fourir Transform InfraRed (FTIR) were used to characterize Nanoparticles are produced before they are made into blood sugar nanosensors. The maximum wavelength was obtained at a wave of 533 nm using a UV-Vis spectrophotometer. The particle size was determined using PSA with average particle a size distribution of 15.49 nm.
The Comparison of Three Different Methods on Extraction of Cigarette Butt as Natural Insecticide Syadza Firdausiah; Firdaus; Hamdayanty; Taufik Hidayat; Muhammad Alfliadhi
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 13, No 2: December 2020
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v13i2.11812

Abstract

Background: Cigarette butt could be used as an insecticide due to the present of alkaloid compounds in high yield, especially nicotine and eugenol. To maximize the extraction process of cigarette butt, the study related to the effect of extraction method to the effectivity of extraction process should be performed. Objective: The main purpose of this study was to identify the effect of extraction methods on the total yield and the nicotine and eugenol content of the extract of cigarette butt. Methods: In this study, maceration (CB-1), soxletation (CB-2), and microwave-assisted extraction (MAE) (CB-3) methods were conducted and compared the yield and the nicotine and eugenol content of the extracts by LC-MS. Results: The results showed that the extract CB-3 has the highest yield (26,77%), which compared to CB-1 and CB-2, which are 11.72% and 14.56%, respectively. Furthermore, the nicotine content of all extracts are 54.15%, 36.43%, and 48.51% for extract CB-1, CB-2, and CB-3, respectively, while eugenol content of CB-1, CB-2, and CB-3 are 5.09%, 6.35%, and 8.41%, respectively. Conclusion: Based on the results, it can be concluded that MAE method was more effective to extract the cigarette butt compared to maceration and soxletation method. This method was also reduced the time consuming and the volume of the solvent used in the extraction process which follow green chemistry rule. Thus, MAE method is potential to be used in extraction process of cigarette butt in order to produce a biopesticide.

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