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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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Synthesis Of Silver Nanoparticles Using Beluntas Leaf (Pluchea Indica L.) Extract Fatimah Fatimah; Abdul Wahid Wahab; Abdul Karim
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 12, No.1: June 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v12i1.5757

Abstract

Synthesis of silver nanoparticles was carried out using environmentally Beluntas (Pluchea Indica L.) leaf extract to minimize the use of harmful chemicals. Synthesis was carried out with the ratio of AgNO3 solution and the beluntas leaf extract 90 mL : 1 mL. The process of forming silver nanoparticles was studied and monitored by observing the absorption spectrum using UV-Vis spectrophotometer. The observations showed the silver nanoparticles that was formed had SPR (Surface Plasmon Resonance) absorbance peak values at the wavelength of about 445,5 nm with an absorbance value of 3,437. The absorbance value increased with the increasing reaction time from 1 hour to 168 hours. From the result of testing using PSA, the average size of silver nanoparticles was 109.1 nm which is dispersed between 1,8 nm – 127,3 nm.
Utilization of Chicken Feather Biomass As Metal Zinc Adsorbent (Zn2+) Djama’an Noer Hidayat; Maming Maming; Syarifuddin Liong
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.2: December 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i2.6651

Abstract

Chicken feather is a waste that can be used as an alternative to adsorbents that can be used to overcome environmental pollution in waters containing heavy metal pollutants, especially on metal Zn (II) ions, Biomass Chicken Feathers using NaOH and Na2SO3 as adsorbent activation and proven using FTIR spectrophotometer . The metal adsorbent of Zn (II) ion by chicken feather biomass has been influenced to the variation of pH of the solution, mass of adsorbent, contact time, and concentration of chicken feather biomass. The method used is the method of "batch" and the metal concentration of Zn (II) ions measured by an atomic absorption spectrophotometer (AAS). Optimal variations that have been achieved under conditions of pH 6, adsorbent mass 0.7 gram, contact time for 80 minutes, and optimal concentration at 100 ppm with absorption of Zn (II) metal on chicken feather biomass of 6.04 mg/g. The metal adsorbent Zn (II) using chicken feather biomass is more in line with the Langmuir isothermal model with an adsorption capacity (Qo) value of 6.45 mg/g.
POTENTIAL NA-ALGINATE EXTRACT FROM BROWN ALGAE sargassum sp. OF THE MANGO MATURATION PROCESS Tanti Iriyanti; Abdul Wahid Wahab; Rohani Bahar
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 11, No.2: December 2018
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v11i2.6488

Abstract

Extraction of Na-alginate from Sargassum sp. and its application in ripening mangoes has conducted. This research aimed to determine the mango storage period by using sodium alginate solution as edible coating  and optimum concentration that has maximum inhibition power to the maturation the mango. The FTIR result shows that sodium alginate by the result ofthe extraction has the same similar functional group to the sodium alginate in the factory. Quantitative analysis show that content of sodium alginate as the result of the extraction is 22,42%, sodium alginate solution is 1% has pH 10,97 and the viscosity is 90 cps, the water measure of sodium alginate is 11,27% with the measure of ash is 41,47%. By testing the ability of sodium alginate conducted on mango with submersion method in the solution concentration from 0-50 ppm. At a concentration of 20 ppm solution shows that the maximum of storage period is about 15 days at room temperature while without submersion is just about 5 days. By this study, we indicate that sodium alginate potentially as coating fruit preservation.
Production and Characterization of Collagenase From Bacillus sp. 6-2 Isolated From Fish Liquid Waste Sartika Danial; Hasnah Natsir; Seniwati Dali; Leliani Leliani
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 12, No.1: June 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v12i1.5924

Abstract

Collagenases are enzyme that are able to hydrolyze native collagen into fragment collagen peptides. Collagenases and its hydrolysis products have received tremendous attention in medical and industrial applications. The present study was conducted to isolate and identify new collagenase producing bacteria from fish liquid waste, then produce and characterize collagenase. A total of 7 isolate from fish liquid waste were screened on selective medium containg 2 % collagen and its activity was confirmed by the formation of clear zone. Isolat 6-2 was positif as collagenase producer and identified as Bacillus sp. 6-2 by morphological and biochemical characteristics. The optimum fermentation time of enzyme was investigated. Collagenase crude extract was characterized by the effect of pH, temperature, and metal ions. Isolat 62 optimally produced collagenase enzyme after 30 h of incubation with activity of   0.072 U/mL and protein content of 3.768 mg/mL. The optimum pH and temperature were 7.0 and 40 oC, respectively. The enzyme was activated by 1 mM Ca2+and  Mg2+, and inhibited by   1 mM  Zn2+ and Co2+. Collagenase from Bacillus sp. 6-2 may have potentials for medical and industrial applications.
Synthesis And Characterization Of Gold Nanoparticles Using Beluntas Leaf Extract Plucheaindica Dewi Lidiawati; Abdul Wahid Wahab; Abdul Karim
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 12, No.1: June 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v12i1.5822

Abstract

Gold nanoparticles have been successfully synthesized using beluntas leaf extract as reducing agents. This is indicated by the change of the color from yellow gold to purple solution after the addition of the beluntas leaf extract. The gold nanoparticles formed were observed for 92 hours using uv-vis and obtained stability after 72 hours with a wavelength about 545.50-546.00 nm. The size distribution of gold nanoparticles was determined using Particle Size Analyzer (PSA) with an average distribution of 101.6 nm. Based on the characterization using XRD, the diffraction pattern obtained at 2θ is 38.1077; 44,2935; 64,5155; 77,4862 which show the presence of gold nanoparticles. Furthermore, it was characterized using SEM EDX showed that the average shape of gold nanoparticles was spherical with a composition ofAu 48%, C 43.33%, and several other elements around 8.67%.
Thermophilic Xylanase Production Rom Isolates of Macula’ Hot Springs Bacteria Using Corn Cobs Waste Media Lupita Denta Putri; Hasnah Natsir; Seniwati Dali
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.2: December 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i2.6652

Abstract

Xylanases is an extracellular enzyme that has prospects as enzymes that hydrolyze hemicellulose (xylan). In this study, carried out isolatied of bacteria from the hot springs Makula', Tana Toraja and determine the optimum conditions in producing the xylanase enzyme. The steps being taken are the rejuvenation of bacteria, the manufacture medium inoculum and the production medium, the measurement OD (Optical Density) measurements of protein and testing activities xylanase. The results obtained showed that the production time for B. stearothermophilus SL3A is in the 48 hours with a value of 0.1237 activity mU/mL and B. stearothermophilus SL3S at the 60 hours with a value of 0.1593 activity mU/mL. B. stearothermophilus SL3A have a protein content of 9.828 mg/mL and for B. stearothermophilus SL3S have a protein content of 10.07 mg/mL. Characteristics bacterial xylanase from B. stearothermophilus SL3A and B. stearothermophilus SL3S work optimally at pH 7 a temperature of 45 ºC. Crude extract of the isolated xylanase enzyme can hydrolyze substrate is xylan corn cobs. The addition of metal CaCl2, MgCl2, CaCl2 can increase the activities of the enzyme xylanase and CoCl2 decreases the activities of enzymes that are inhibitors.
SYNTHESIS OF LIQUID ORGANIC FERTILIZER BASED ON CHICKEN MANURE USING BIOSCA AND FUNGUS BIOACTIVATOR Trichoderma harzianum Rahmad Rahmad; Abdul Karim; Nursiah La Nafie; Muhammad Jayadi
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 11, No.2: December 2018
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v11i2.6489

Abstract

Production of liquid organic fertilizer from chicken feces with addition bioaktivator Biosca and Trichoderma harzianum fungus aims to determine the influence of time against pH and macro elements (N, P, and K), analyze the influence and determine the bioactivator composition against pH, macro element content, growth and production of tomato plants. The method of making this liquid organic fertilizer is chicken feces dissolved using water in a composter, then composted with addition of bioactivator which is consisting B1 (40 mL Biosca), B2 (40 mL T. harzianum), B3 (10 mL Biosca + 30 mL T. harzianum), B4 (20 mL Biosca + 20 mL T. harzianum) and B5 (30 mL Biosca + 10 mL T. harzianum). Composting is done by time variations of 7 days (M1), 14 days (M2) and 21 days (M3). The result of research shows that the process of making organic liquid fertilizer with time variation of composting and effective bioactivator composition in increasing macro element level and good pH is B5 with 21 days of composting time. The influence of bioactivator composition against pH and macro element indicator is showed by value of N: 5,33%, P: 2,41%, K: 1,34% at pH: 7,1. While the influence against tomato plants on the observation at the 10th week is for the growth of plant height: 197,7 cm, average of plant diameter: 16,27 mm, average of leaf production: 41 sheets, and for the average of fruit production: 32 pieces, average of fruit weight:  32,4 g.
Collagen Extraction from Bone of Lutjanus sp. and Toxicity Assay Leliani Ramli; Hasnah Natsir; Seniwati Dali; Sartika Danial
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 12, No.1: June 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v12i1.5925

Abstract

Indonesia is a maritime country with the potential fisheries resources. However, utilization only revolves around the meat, while other parts have not been used optimally, especially fish bones which have the potential to produce collagen, so it needs to be developed. The aims of this study ware extracted collagen from bone of Lutjanus sp. and determine its the Anticancer activity. The collagen was extracted by using hydroextraction method and identification by FTIR. The initial screening anticancer activity was done by using Brine Shrimp Lethality Test (BSLT) method for toxicity assay. The results showed that the yield of collagen was 4.535% with protein concentration was 8,815 mg/mL. Identified collagen from spectrum of amide A, B, I, II, and III at 3421.72; 2926.01; 1651.07; 1541.12; 1240.23 cm-1. The toxicity test was shown in LC50 values of  8,760 μg/mL. The collagen from Lutjanus sp. bone can be used as natural anticancer agent.
Determination of Effectiveness Absorption of The Rice Husk And Hazelnut Shell to Purification Used Cooking Oil Loth Botahala; Yanti Malailak; Herlin Silvia Maure; Hagar Karlani
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 12, No.1: June 2019
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v12i1.6172

Abstract

The effectiveness of the absorption of activated rice husk and hazelnut shells on the purification of used cooking oil has been carried out. The aim is to determine the absorption capacity of the active charcoal of rice husk and hazelnut shells to purify used cooking oil. After being physically activated, activated charcoal from rice husk and pecan shells is applied to the purification of used cooking oil. The results show that the quality of hazelnut shell charcoal is better than rice husk after it is applied to purifying used cooking oil.
Synthesis and Characterization of Rise Husk Nanopores Carbon Through Ultrasonic Irradiation With H3PO4 Activators as Electrochemical Energy Storage Materials Sitti Rahmah; Muhammad Zakir; L. Musa Ramang
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 10, No.2: December 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v10i2.6653

Abstract

The research on synthesis and characterization of carbon nanopores rice husk through ultrasonic irradiation by activators H3PO4 as electrochemical energy storage material has been made. This activated carbon is a basic material in making electrodes which will be developed into electrochemical energy storage material. Nanopores carbon is made from rice husks, which passes through three stages of the process and the development  methods of manufacturing of previous activated carbon. Carbonization carried out at a temperature of 350 oC, then add the HF with the aim to remove silica from the carbon in order to increase its surface area, and chemical activation with H3PO4. Furthermore, the modified carbon through ultrasonic irradiation. Characterization of the surface of activated carbon is done through the analysis of XRD and XRF, characterization of functional groups by FTIR, surface area determination by the method of methylene blue, as well as the specific capacitance measurement with CV. The results showed the addition HF can remove carbon silica in rice husks. The element largest of the active carbon with ultrasonic wave irradiation is Ca or  oxide CaO by 46,43 %, which has a crystallinity of phase with relatively mesoporous carbon pores. The surface area of activated carbon rice husk with irradiation of ultrasonic waves in optimum condition at a temperature of 30 ° C for 60 minutes which is 184.348426 m2 / g. The value of the specific capacity of the activated carbon energy storage rice husks with and without irradiation of ultrasonic waves each is 1067,75 nF/g and 622,17 nF/gram.

Page 7 of 15 | Total Record : 142

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