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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 142 Documents
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Sintesis 4-Hidroksisinamamida dari Asam 4-Hidroksinanamat melalui Reaksi Esterifikasi dan Amonolisis Firdaus Firdaus; Nunuk Hariani Soekamto; Abdul Karim
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 2 No 2 - December 2009
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v2i2.2463

Abstract

The 4-hydroxycinnamamide  is a compound  that has been isolated from the root bark of Kleinhovia hospita Linn. The compound show high toxicity to Artemia salina Leach (IC 180,53 µg) so it can be expected has cytostatic activity against P388 leukemic cells. However, the concentration of the compound in the root bark of K. hospita Linn is very low (about 1.6 ppm), and commercially the compound  is  not  ready  and  has  never  been  synthesized.  Therefore,  it  is  important  to  find  out  a synthesis method to used in prepare the compound for further examination, in particular its cytostatic activity. By this research, the 4-hydroxycinnamamide compound has been prepared from 4- hydroxycinnamic  acid  via  esterification  reaction  with  excess  ethanol  and  sulphate  acid  catalyst followed  ammonolysis  reaction  with concentrated  ammonia.  The esterification  stage  gave  ethyl 4-hidroxycinnamate   as  white  crystall  with  melting  point  133-134oC   and  34.9%  yield,  and  the ammonolysis stage gave 4-hydroxycinnamamide as white crystall with merting point 140oC and 46.1% yield. Identification of the reaction product was carried out by FTIR and NMR spectroscopy methods.Keywords: 4-hydroxycinnamamide, 4-hydroxycinnamic acid, esterification, ammonolysis
PRODUKSI SENYAWA BAKTERIOSIN SECARA FERMENTASI MENGGUNAKAN ISOLAT BAL Enterococcus faecium DU55 DARI DANGKE Abd. Rahman Razak; Abd. Rauf patong; Tjodi Harlim; M. Natsir Djide; Haslia Haslia; Mahdalia Mahdalia
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 2 No 2 - December 2009
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v2i2.977

Abstract

Dangke is one of traditional food from Enrekang Province Sulawesi Selatan which is made from buffalo milk and enzimatically processed using papain from papaya’s gland secretion. Research on this local product as source of lactic acid bacteria (LAB) has been done. Counted 30 LAB was successfully isolated and 3 of them were potentially to be able to yield antimicrobial compound. Enterococcus faecium DU55 is one of LAB isolate available to be applied for producing bacteriocin compound through fermentation. Optimum condition of fermentation was specified by determining the highest antimicrobial activity generated by filtrate of fermentation result. Antimicrobial activity examination was carried out through diffusion agar method by measuring inhibition zone growth of pathogen bacterium Salmonella typhimurium FNCC 0050. Research results indicate that maximum bacteriocin compound production by BAL isolate E. faecium DU55 was obtained at condition of optimum fermentation at 30 °C during 42 hour using M1 medium with the same composition to medium MRS (Man Rogosa and Sharpe).Keyword: dangke, LAB isolate, bacteriocin, antimicrobial activity
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.
Karakterisasi Sifat Fisikokimia Komposit Besi Oksida-Montmorilonit Hasil Interkalasi Silikat Lempung Montmorilonit Serly Jolanda Sekewael
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 1 No 1 - December 2008
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v1i1.2450

Abstract

The preparation of iron oxide-montmorillonite composite has been done by intercalation of iron oxide into the silicates interlayer of montmorillonite. Montmorillonite and iron oxide-montmorillonite composite were characterized to observe some physical and chemical properties. The observed properties were basal spacing d001, determined by X-Rays Difractometer (XRD); surface morphology, analyzed by SEM/EDAX; specific surface area, distribution of pore radius and total pore volume, analyzed by Gas Sorption Analyzer; functional groups, analyzed by FTIR Spectrophotometer; and iron content, determined by X-Ray Fluorescent Analyzer (XRF). The characterization of montmorillonite and iron oxide-montmorillonite composite showed that the basal spacing d001, increased from 14.11 Å in montmorillonite to 16.85 Å in iron oxide-montmorillonite. Surface morphology of montmorillonite showed the laminated structure, while that of iron oxide-montmorillonite indicated a delaminated structure with the external oxides layered. Specific surface area increased from 69.71 m2/g to 126. 49 m2/g; total pore volume also increased from 50.70 x10-3 mL/g to 107.89 x10-3 mL/g. Generally, spectrum adsorption of montmorillonite and iron oxide-montmorillonite composite not different so far, stretching vibration O-H with Fe3+ does not exist on iron oxide-montmorillonite composite. The iron content also increased from 4.57 %(w/w) to 23.61 %(w/w).Keywords : montmorillonite clay, intercalation, iron oxide-montmorillonit composite.
Selektifitas Transpor Lantanum Dari Mineral Monasit Dengan Teknik Supported Liquid Membrane Djabal Nur Basir
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 2 No 1 - June 2009
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v2i1.973

Abstract

Transport selectivity of lanthanum from monazite mineral by supported liquid membrane, SLM technique has been studied. The supporting membrane, PTFE(polytetrafluoroethylene) was activated by immersing in a mixture of TBP(trybuthylphosphate) and D2EHPA (di-2-ethylhexyl phosphoric acid) at the composition of concentration in kerosene as carrier. Determination of the REE’s total concentration was carried out by visible spectrophotometric with NAS (sodium alizarin sulfonat) as the colouring agent, absorbance of the solution was determinated at 534 nm as maximum wavelength. For the determination of REE,s specific concentration an ICP-AES has been adopted, at emission maximum wavelength in each specific of REE’s, e.q : Ce at 418.66 nm, La at 408.316 nm, Nd at 401.225 nm, Gd at 342.247 nm, and Lu at 261.542 nm. Transport selectivity of lanthanum through SLM in a mixture of the REE’s simulation by optimum condition were pH of feed phase was 3.0, concentration of carrier composition (TBP : D2EHPA) was (0.3 : 0.7) M, and concentration of chloride acid of the receiving phase was 3.0 M. In this condition, separation factor of La toward Nd, Gd, and Lu : αLa,Nd 5.0297, αLa,Gd 8.1935, , αLu,La 11.9529. Transport selectivity of lanthanum from monazite mineral through SLM at optimum condition have been resulted lanthanum with the perity rate of increase from 25.08% to 89.84%, with recovery was 84.15%.Keywords : supported liquid membrane, carrier, polytetrafluoroethylene, trybuthylphosphate, di-2-ethylhexyl phosphoric acid.
Studi Potensi Pencemaran Lingkungan Dari Kegiatan Pertambangan Emas Rakyat Poboya Kota Palu Ruslan Ruslan; Khairuddin Khairuddin
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 3 No 1 - June 2010
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v3i1.5972

Abstract

Study of environmental pollution potential of gold mining activities of Poboya society had been done. The aim is to obtain information on the amount of mercury concentrations in the river, tromol activity and the burning process of amalgam. The data was collected by survey and interview methods, while water and sediment sampling in rivers, wastewater and solid at tromol activity, and soil sampling around the burning of amalgam at different distances. The result showed that the presence of metallic mercury from mining activities both traditional mining using large discs made since the year 2007 and those that use Tromol which has been underway since August 2009 until now. The highest concentration of mercury in the river was 0.080 ppm, and the lowest was 0.005 ppm and the highest river sediment was 58.000 mg/kg, the lowest was 4.000 mg/kg. Then the concentration of mercury in waste water supreme tromol activity was 0.040 ppm, and the lowest was 0.005 ppm and the highest solid waste (tailings) was 88.2 mg /kg, the lowest was 80.8 mg/kg. Mercury levels around the burning of five sampling locations with different distances between 45.5 mg/kg to 99,90 mg/kg. Partially contained metal mercury at some point in the example has exceeded the maximum allowable concentration limit in a holistic and unsafe condition had been beyond its maximum concentration and water quality standard, sediment, wastewater and solid waste as required.Keywords : Traditional mining, Mercury.
Optimalisasi Proses Sintesis Dan Karakterisasi Biodiesel Dari Minyak Alga Merah (Eucheuma cottonii) Dengan Katalis Kalium Hidroksida (KOH) Muhammad Zakir; Indah Raya; Asbia Asbia
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 3 No 1 - June 2010
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v3i1.5973

Abstract

Research on the optimalization of synthesis process of biodiesel as an alternative fuel from red algae oil (Eucheuma cottonii) with potasium hidroksida (KOH) had been done. Red algae (E. cottonii) oil was used as raw material in the Biodiesel synthesis. Red algae oil was gained through extraction process with soxhletation method using n-heksane as solvent. Biodiesel (methyl ester) had been synthesized from red algae oil by transesterification process used methanol as solvent and KOH as catalyst. The process had been done at 40, 50, 60, and 70 oC with reaction time 2, 3, 4, and 5 hours. The total fatty acids and free fatty acids of the product were used in the calculation of conversion value. The optimum temperature and reaction time giving the greatest number of biodiesel conversion is 60 0C for 4-5 hours with conversion 24,1077%. The biodiesel of highest conversion was characterized physically and chemically. The Result showed that viscosity, density, water value, and iodine number were 4,432 cSt, 0,8383 g/mL, 0,013, and 10,66 mg/mek, respectively. Biodiesel from red algae oil that was not effective to be used as alternative fuel because of its product is very low.Keywords: Biodiesel fuel, Eucheuma cottonii, transesterification, KOH
Optimasi Produksi Enzim Lipase Dari Isolat Aspergillus oryzae Seniwati Dali; Rauf Patong; Muhammad Noor Djalaluddin; Pirman AP
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 3 No 1 - June 2010
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v3i1.5969

Abstract

Production optimization of lipase enzyme from Aspergillus oryzae isolate on moldy copra has been conducted. Enzyme isolation is carried out after the fungi is activated and cultured on media containing peptone and olive oil at 370C in temperature and 7,0 in pH during 8 days. Production optimization of lipase enzyme is conducted by varying composition of production media, namely: peptone concentration and olive oil and optimal stirring speed. The study results showed that activity of the highest lipase enzyme is acquired on pepton concentration of 1 %, olive oil concentration of 3 % and the stirring speed is 150 rpm. Of concentration optimization of production media and stirring speed is acquired that there is an increasing activity of the lipase enzyme from 13.222 U/mL to 18888U/mL.
Pengaruh Konsentrasi Glutaraldehid Pada Komposisi Membran Elektroda Biosensor Pestisida Karbamat Mashuni Mashuni; Muhammad Syahrul; Ahyar Ahmad; Abdul Wahid Wahab
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 3 No 1 - June 2010
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v3i1.5970

Abstract

In recent years carbamic pesticides, which show low environmental persistence but a high acute toxicity. Their presence in environmental and food poses a potential hazard to human health and there is a growing interest in their rapid and accurate determination for food safety and environmental monitoring. The aim of this research is to design biosensor for analyzing carbamate pesticides residue in sample show with composite variable concentrate glutaraldehyde (GA) in electrode membrane. Enzim acetylcholinesterase (AChE) was co-immobilised with choline oxidase (ChO) onto a platinum (Pt) surface using a solution of 10% cellulose acetate and 15%, 20%, 25% glutaraldehyde. Result of this research show that glutaraldehyde 15% the detection limit is 10-7,8 M for glutaraldehyde 20% the detection limit is 10-8,4 M and glutaraldehyde 25% the detection limit is 10-8,7 M. This a results is approximately equal to 0,0022 ppm or 2,2 ppb – 0,0002 ppm or 0,2 ppb, which means that this biosensor is sensitive for determining carbamates pesticides residue where its detection limit is comparable to to the detection limit of conventional instrument such as Gas Chromatography (GC) and High Pressure Liquid Chromatography (HPLC), i.e. respectively 1,5 ppb and 2,0 ppb. The proposed electrochemical pesticide sensitivity test exhibited high sensitivity, desirable accuracy, low cost and simplified procedure.Keywords: Biosensors, glutaraldehyde, cellulose acetate, immobilised, carbamate Biosensors, glutaraldehyde, cellulose acetate, immobilised, carbamate pesticides
Bioakumulasi Ion Logam Kadmium Oleh Fitoplankton Laut Tetraselmis chuii dan Chaetoceros calcitraus Muhammad Sjahrul; Arifin Arifin
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 3 No 1 - June 2010
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v3i1.5971

Abstract

The use of the marine phytoplankton, Tetraselmi chuii and Chaetoceros calcitrans have already been reported. The relationships of the usefulness as phytoremidiator on cadmium polluted marine are not yet well understood. Therefore, this study was conducted to evaluate the influence of Cd2+ addition on fitoplankton medium towards the growth, interacting time, pH medium that could accumunlate Cd2+ in the function groups involved in the bioaccumulation prosess of Cd2+ by phytoplankton. The method of the analysis and the data collectionwas carried out on (1) the growth acceleration, the number of phytoplankton cells, and the chlorophyl-a content; (2) the Cd2+ content in phytoplankton on various interacting time, and pH medium; and (3) the infra-red spectrum of phytoplankton biomass before and after the interaction with Cd2+. The addition of Cd2+ on T. chuui medium can decrease the growth and content of chlorophyll-a, while the addition of Cd2+ on C. Calcitrans medium can increase the growth and content of chlorophyl-a. The phytoplankton can accumulate Cd2+ in the pH8 in the interacting time of 15 minutes with the optimal accumulating ability of 13.46 and 1, 055.27 mg Cd2+ per gram of T. chuii and C. Calcitrans biomasses successively. The function groups of T. Chuii involved in the bioaccumulation process of Cd2+ are-OH, CN, S=O, N-O, S-S and M-S, while on C. Calcitrans, the function groups are-OH, C=0, S-S, M-S and C=C.Keywords: Bioaccumulation, Kadmium, Tetraselmis chuii, Chaetocer calcitransKey

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