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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 4 Documents
 1 
Search results for , issue "Volume 15, No 1: June 2022" : 4 Documents clear
Optimization and Validation of Electrochemical Biosensor Based on Pseudomonas sp. Biofilm Immobilized on Screen-Printed Carbon Electrode in Detecting Benzene Alfiah Alif; Dyah Iswantini; Henny Purwaningsih; Novik Nurhidayat; Ali Aulia Ghozali; Amalyah Febryanti
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 15, No 1: June 2022
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v15i1.19008

Abstract

Benzene is known as one of the hazardous compounds potentially interfering the health and polluting the environment. Generally, detecting benzene still requires a long analysis time and expensive costs. Therefore, this study aimed to evaluate the analytical performance of a biosensor with microbes as the biodetection element. Pseudomonas sp. biofilms which produce benzene dioxygenase enzyme and then immobilized on a Screen-Printed Carbon Electrode (SPCE). The results of the optimization of the biosensor obtained a benzene concentration of 3 mM, a bacterial density of 1.4x1011 cells/mL and suspension pH of 7.5. The optimization results are used to measure the analytical performance of the biosensor. The value of analytical performance produced on linearity is in the measurement range of 0.1 - 3 mM, the equation y = 7.4118x + 80.048 with R2 = 0.9744. The detection limit and quantity limit are 0.5630 mM and 1.8767 mM respectively, with a sensitivity of 7.4188 μA/mM. The precision obtained shows that the SPCE biofilm method has moderate accuracy with a %SBR value below 5%. The selectivity of this method still needs to increase, but the stability of the benzene biosensor increases up to 35 days with an activity of 100.36%. This indicates the immobilization of Pseudomonas sp. had potency as an alternative method for detecting benzene and it can be developed for a prototype.
ISM Identification and Distribution of Polycyclic Aromatic Hydrocarbon Pollutants in Coastal Ecosystem the Marine Tourism Area, South Sulawesi Ismail Marzuki; Nur Rahmi Putri Lubis; Irham Pratama; Noviar Nurdin Kasim
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 15, No 1: June 2022
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v15i1.20898

Abstract

Today's marine tourism is experiencing rapid growth to meet the global needs of the world's population. Exploitation of marine biological wealth is no less important because it involves human life. The marine ecosystem must be of high quality and free from exposure to toxic pollutants, such as PAHs. The marine ecosystem must be of high quality and free from exposure to toxic pollutants, such as PAHs, microplastics. This research aims to provide data and information about the types and abundance of aromatic hydrocarbon compounds in sediments, sea water and marine biota around KKI waters. The analytical method to meet these objectives uses GS/MS. The status of marine tourism areas, especially around KKI waters, is declared polluted by PAHs. The types of PAHs identified in each sample at the three sampling stations were dominated by naphthalene (NL), phenanthrene (PT), pyrene (PR) and azulene (AZ). The average total abundance of PAHs in sponge samples (±70.51%), sediments (±67.30%), followed by seawater samples (±64.85%), starfish samples (±41.80%) and fish (±26.74%). The NL type PAHs were found in all types of samples and at all stations, where the PAHs were thought to originate from industrial, hospital, and household activities. The status of marine tourism, especially around the KKI waters, for tourists needs to be careful and alert, because the KKI area is not completely free from harmful and toxic pollutants, so it is a risk to health. Makassar City TMA managers are encouraged to make efforts to reduce the rate of increase in the concentration of regional PAHs, such as providing periodic data and information about harmful pollutants, education for every tourist to care about waste and planting coastal plants such as mangroves which have a biofilter function against toxic pollutants.
The Analysis of Total Phenolic Content of Siam Weed Leaf Extract (Chromolaena Odorata L.) and Antibacterial Activity Test Against Escherichia coli and Staphylococcus aureus yusriadi tamuddin; Mega Fia Lestari; Hasri Hasri; Maryono Maryono; Netti Herawati
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 15, No 1: June 2022
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v15i1.21074

Abstract

This study aims to determine the total phenolic content of extracts of water, methanol, and ethyl acetate of Siamese weed leaves and to test their bioactivity against Escherichia coli and Staphylococcus aureus. This research includes testing of active compound groups and determination of total phenolic and bioactivity tests. The total phenolic content was determined by the Folin-Ciocalteu method using a UV-Vis spectrophotometer. The results of the analysis showed that the extracts of water, methanol, and ethyl acetate were 54.0647; 44.9289; and 9.2005 mg GAE/g extract. The results of the bioactivity test of aqueous extracts were greater than that of methanol and ethyl acetate extracts where the minimum inhibitory concentration (MIC) of aqueous extracts against E. coli bacteria was at a concentration of 0.1%, while against S. aureus bacteria the bioactivity of methanol extracts was greater than that of aqueous extracts and ethyl acetate concentrations. minimum inhibitory (MIC) 0.5%. Keywords: Antibacterial, Siamese weed leaves, total phenolic.
Development of Antioxidant Edible Films Based on Chitosan Enriched with Dragon Fruit (Polyrhizus hyloroceus) Peel Extract Abdur Rahman Arif; Fitriani B; Hasnah Natsir
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 15, No 1: June 2022
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v15i1.22004

Abstract

Formulation and characterization of chitosan-based edible film with fortification of dragon fruit peel extract (DFPE) were investigated. The effect of the addition of DFPE on the characteristics of edible films was observed through the parameters of antioxidant activity, thickness, water vapor transmission rate, mechanical properties, FTIR and biodegradation. The antioxidant activity of edible films was tested by the DPPH radical inhibition method. The results showed that increasing the concentration of DFPE increased the value, the rate of water vapor transmission, antioxidant activity and the rate of biodegradation but decreased the tensile strength. The elongation of the DFPE edible film has a better value (maximum 22,385 ± 7,196%) compared to the control edible film (14,545 ± 1,208). This study shows that the addition of DFPE into chitosan-based edible films can be developed as active packaging.

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