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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 121 Documents
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SYNTHESIS AND CHARACTERIZATION OF GOLD NANOPARTICLES USING TEAK LEAF EXTRACT Tectona grandis Muhammad Yasser; Setyo Erna Widiyanti; Abdur Rahman Arif
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.1: June 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i1.6408

Abstract

Teak leaf extract has been successfully used in the synthesis of gold nanoparticles. It is characterized by a color change of the solution from yellow to red wine after the addition of teak leaf extract to HAuCl4 and the resulting wavelengths in the range of 500-600 nm that indicates that gold nanoparticles have been formed. Growth and stability of the gold nanoparticles produced using UV-Vis Spectroscopy. During observation during 144 hours the stability of gold nanoparticles after 48 hours with a wavelength of about 567.5 -568 nm. 
ANALYSIS OF FORMALDEHYDE PRESERVATIVES IN WET ANCHOVY (Stolephorus Sp.) FROM TRADITIONAL MARKETS IN MAKASSAR CITY, SOUTH SULAWESI Adriani Adriani; Abdul Karim; seniwati dali
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 11, No.1: June 2018
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v11i1.6399

Abstract

Food preservatives are very important ingredients in improving the quality and production of processed foods. However there are various presenvatives and such preservatives such as formaldehide are not allowed. This study aims to determine the content of preservatives in fresh anchovy (stolephorus sp.) from the traditional market of Makassar City South Sulawesi. Formaldehyde preservatives is identified by qualitative and quantitative test, qualitative formaldehyde was tested using Schryver reagent using UV-Vis Spectrophotometer analysis method. The result of qualitative analysis showed that all samples contained formaldehyde, with the concentration value of 0.2702ppm; 0.1307ppm; 0.0871ppm in Daya Market A; Daya Market B; Daya Market C samples, respectively. The content of 0.1612ppm; 0.2223ppm; 0,1525ppm in Antang Market A; Antang Market B; Antang Market C samples, respectively. The content of 0,1918ppm;0,0087ppm; 0.2877ppm in Terong Market A; Terong Market B; Terong Market C, samples, respectively and the content of 0.1394ppm; 0.1961ppm; 0,0043, in Pa’baeng-baeng Market A; Pa’baeng-baeng Market B; Pa’baeng-baeng Market C samples, respectively. The lowest formaldehyde level was found in Terong Market C with level of 0.0087ppm and the highest formaldehyde level was in Pa’baeng-baeng Market C with the level of 0.2877ppm. 
ENZIMATIC PRODUCTION OF CHITOSAN FROM WASTE OF RAJUNGAN CRAB SHELL AND IT’S APLICATION IN CHOLESTEROL REDUCTION BY IN VITRO TEST Alfian Nasir Maidin; Hasnah Natsir; Seniwati Dali
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.1: June 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i1.6404

Abstract

This research aimed to show the percentages of the level of the cholesterol decreased by the convertion product of chitosan enzimatically through in vitro. The research method was started by the demineralization process of the sample in the form of powder of crab shells, and then continued with the de-colorization and de-proteination steps. The next step was de-asetilation enzymatically using de-acetylated chitin which had been isolated from Bacillus licheniformis HSA3-1a bacteria at 50OC for 2 hours until the chitosan was obtained. The research results indicated that the characteristics of the isolated chitosan had water content of 5.45%, ash content 1.53%, N-total of 6.99% and de-acetylation degree of 78.9%, and it showed white yellowish powder form. The results of the test of chitosan as the reducer of cholesterol level by in vitro process showed that 31.18% of the cholesterolwas decreased by 2 mg concentrate of chitosan. Beide, 0.5 mg of simvastatin (as positive control) had decreased by 58.29%. 
EFFECT OF METAL ION Cu (II) and Mg (II) ON THE ACTIVITIES ANTIOXIDANT ANTHOCYANIN OF EXTRACT ETHANOL SKIN DRAGON FRUIT RED(Hylocereuspolyrhizus) Asrul Sani; Ahyar Ahmad; Firdaus Zenta
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 11, No.1: June 2018
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v11i1.6400

Abstract

The effect of Cu2+ and Mg2+ metal ions on the antioxidant activity of anthocyanins of ethanol extract from the red dragon skin fruit (Hylocereus polyrhizus) has been done. Anthocyanin pigments from ethanol extract the red dragon skin fruit, content and antioxidant activity of anthocyanins from the red dragon fruit skin with ethanol solvent, and the effect of Cu2+ and Mg2+ metal ions on the antioxidant activity of anthocyanins. Identification of anthocyanin was done by identification of color test, using spectrophotometer analysis of UV-Vis and FTIR. The anthocyanin content was determined using pH difference method, and determined effect of metal ions extract was done by adding 50 ppm, 100 ppm, and 150 ppm of metal ions Cu2+ and Mg2+ into the anthocyanin extract that was been acidified by HCl , using spectrophotometer analysis of FTIR. Antioxidant activity test using DPPH method. The results show that ethanol extracts the red dragon anthocyanin by content is 12.5241 mg / L and antioxidant activity (IC50) is 0.478 μg / mL and with addition of2+ and Mg2+ metal ions can be increased antioxidant activity (IC50) of anthocyanins to be 0.2259 μg / mL for Cu2+ at concentration 50 ppm and 0.3351 μg / mL for Mg2+ at concentration 50 ppm.
SYNTHESIS OF SILVER NANOPARTICLES USING BIOREDUCTOR OF KETAPANG LEAF EXTRACT (Terminalia catappa) Andi Rusnaenah; Muhammad Zakir; Prastawa Budi
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.1: June 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i1.6405

Abstract

It had been done research about biosynthesis of nanoparticle silver (AgNPs) by using extract of ketapang leaf. The characterization result spectrum UV-Vis, XRD,PSA, TEM, dan FTIR show that increasing concentration AgNO3 increase wavelength (), the best concentration AgNO3 is 1 mM with SPR at  430-432 nm. The increasing temperature tend to decrease intensity of absorption, the best temperature of synthesis is 30oC with intensity absorption 3.492 show the obtained crystal of silver with average size distribution about 47.1 nm. Based on TEM measurement, size of obtained AgNPs is 36 nm with ball shape. The –OH group responsible in reduction of AgNO3 to become AgNPs. 
BIOSORPTION OF Cu (II) METAL IONS BY DRAGON FRUIT SKIN (Hylocereus polyrhizus) Sahriani Ali; Nursiah La Nafie; Paulina Taba
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 11, No.1: June 2018
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v11i1.6401

Abstract

Biosorption is an effective method for removal of heavy metals from their solutions. Biosorption of Cu (II) by contact time, pH, and concentration has been investigated. Concentration of Cu (II) ion before and after adsorption was determined using Atomic Absorption Spectrophotometer (AAS). The effect of the pH process was studied at pH of 2-7. The result showed that the optimum time for biosorption of Cu (II) ion by biomass dragon fruit was 10 minutes and pH 4 was the optimum pH of biosorption. Langmuir and Freundlich models were used for the adsorption of isotherm. Result showed that biosorption of Cu (II) by dragon fruit peel fit better the Langmuir model than Freundich model with the adsorption capacity (Qo) of 20.401 mg/g biosorbent. The result of FT-IR analysis showed that hydroxyl groups were responsible for the binding of Cu (II) ions. 
REDOX DEPOSITION OF MnO 2 NANOPARTICLES ON RICE HUSK BASED ACTIVATED CARBON AS HIGH-PERFORMANCE ELECTRODE MATERIAL FOR PSEUDO-CAPACITORS Abdul Hayat Kasim; Muhammad Zakir; L. Musa Ramang; Bannu Abdussamad
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.1: June 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i1.6406

Abstract

MnO2/rice husk activated carbon (KASP) nanocomposites have been synthesized by directly reducing KMnO4 with KASP in an aqueous solution. XRD diffraction data showed a broad and typical peak MnO2 at 37 2theta as an indicator that the compound obtained are amorphous. Fluorescence data (XRF) also supports that after addition of KMnO4 to the rice husk based acticated carbon solution concurrently MnO2 nanoparticles deposition takes place on the surface of KASP. It is found that the morphologies of MnO2 grown on KASP can be tailored by varying the reaction ratio of KASP and KMnO4. A pseudo-capacitor with high energy density was fabricated by using MnO2/RHAC nanocomposite as positive electrode and activated carbon as negative electrode in 1 M Na2SO4 aqueous electrolyte. The pseudocapacitor can be cycled reversibly in the cell voltage of 0.2 V, and delivers a specific capacitance of 25.4 mF g-1 (based on the total mass of active electrode materials of 9.4 mg), which is much higher than that of supercapacitor without MnO2 deposition (8.6 F g-1), or there is significance increase in capacitance (± 3000 times). We obtained also that supercapacitor’s electrode developed from rice husk based activated carbon has a better performance compared to one developed from commercially activated carbon material. Such a better electrochemical performance makes nanocomposite of MnO2/KASP as a promising electrode material for supercapacitors.
SYNTHESIS OF SILVER NANOPARTICLES USING BIOREDUCTOR OF KETAPANG LEAF EXTRACT (Terminalia catappa) AND ITS POTENTIAL AS SUNSCREEN Payapo Irfa Apriliyanti; Muhammad Zakir; Nunuk Hariani Soekamto
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.1: June 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i1.6395

Abstract

Synthesis of silver nanoparticles is done by the chemical reduction method using the extract of leaves of catappa (Terminalia catappa) which acts as a reducing agent with the use of AgNO3 as the precursors. The results, based on changes in color, pH, and UV-Vis absorption shows color changes from yellow to yellow-brown with a pH of 4 indicating the formation of silver nanoparticles with a wavelength range from 412,50- 404,00 nm for the storage of the first day until the seventh day with a particle size 92,48 nm based on the results of taking the measurements of PSA. Analysis of functional groups that play a role in the synthesis using FT-IR. Characterization using XRD showed that the synthesized form a cubic crystal with a crystal size of 53,48 nm. Silver nanoparticles are used as a sunscreen with a blend of hydroxy cinnamic acid compounds. Testing activities determined sunscreen with SPF values were analyzed using a UV-Vis spectrophotometer. Results of testing the activity of sunscreen alloy nanoparticles of silver and hydroxy cinnamic acid (AHNP) with a concentration of 16 μg/mL - 20 μg/ml showed the consecutive SPF value 20,97; 24,71; 26,41; 28,07 and 31,92. Sunscreen AHNP activity increases with the concentration AHNP. Based on the research results can be concluded that the combination of ultra AHNP has a protective effect (SPF ≥ 15) against UV-B rays. 
BIOSORPTION OF Ni (II) IONS BY ARABICAN COFFEE FRUIT (Coffea arabica) Serly Tandigau; Nursiah La Nafie; Prastawa Budi
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 11, No.1: June 2018
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v11i1.6402

Abstract

Arabica coffee fruit peel is a material that is abundant and cheap. The material has been used as an adsorbent in the biosorption process for the removal of metal ions of Ni(II) from wastewater. Biosorption of Ni(II) ion by dragon fruit peel was done on the variation of particle size, variation of contact time, pH and concentration. Adsorption capacity was studied by both isotherm adsorptions of Langmuir and Freundlich. The concentration of metal ions Ni(II) before and after adsorption was determined using Atomic Absorption Spectrophotometer (AAS). Results showed that the optimum time was 50 minutes and the optimum pH was 6 with 120 mesh of particle size of biosorption. Results showed that the biosorption of Ni(II) ion using Arabica coffee fruit peel fullfilled the isotherm Langmuir model with the biosorption capacity (Qo) of 18.86 mg/g. The functional group involved in metal ion biosorption of Ni(II) by the peel of coffee fruit is a hydroxyl group (-OH). 
THE DETERMINATION OF PARABEN PRESERVATIVES IN BODY SCRUB Muawana Muawana; Nur Qadri Rasyid1; Rahmawati Rahmawati
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.1: June 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i1.6407

Abstract

Esther alkyl of p-hidroksibenzoat (paraben) widely used as an agent antimikroba with activity antimikroba increase in line with the length of the chain alkyl. The compound is widely used as a preservative on scrubs to extend the savings products. Scrubs is one care products the body much used to lift sel-sel dead skin can replace the soap. Although beneficial as a preservative , research liaise paraben with some side effects adverse as cancer, infertility and miscarriage. The identification of the two kinds of paraben (metyl paraben and propyl paraben) of 10 sample wraps done with thin layer chromatography (TLC) who proceed to the analysis of the levels of parabens using spectrophotometer UV-Vis. The results showed that of the 10 samples there are 8 samples positive methyl paraben with average levels of value of 0.05% and 7 samples positive with propyl paraben are common values of average levels of 0.03%. The average total of paraben in sample 8 body scrub that is amounted to 0.08%. Comparison paraben shows that methyl paraben having concentration higher in any product.

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