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INDONESIA
EKSAKTA: Journal of Sciences and Data Analysis
Published by Universitas Islam Indonesia
ISSN : 27160459     EISSN : 27209326     DOI : 10.20885
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Materials Science & Nanotechnology
Ekstakta is an interdisciplinary journal with the scope of mathematics and natural sciences that is published by Fakultas MIPA Universitas Islam Indonesia. All submitted papers should describe original, innovatory research, and modelling research indicating their basic idea for potential applications. The Journal particularly welcomes submissions that focus on the progress in the field of mathematics, statistics, chemistry, physics, biology and pharmaceutical sciences.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 231 Documents
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Application of Electro-Oxidation Method for Treatment of Dye Textile Wastewater Using Stainless Steel Electrode: Study of Electrolyte Concentration Effect to Color Removal Jumardin Rua; Mega Maghfirotul Fajrin; Zaina Rohayati; Riyanto Riyanto
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 17, ISSUE 2, August 2017
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol17.iss2.art6

Abstract

The increasing number of textile industries has created a new problem of environmental pollution from waste produced. Entering of concentrated wastewater that containing of complex organic compounds to agricultural land and rivers has caused loss to humans or the environment. Treatment of dye textile wastewater by electro-oxidation method using stainless steel electrode has been done. This research consists of several stages: analysis of electrode composition with SEM-EDX, electrolysis of wastewater at variation of electrolyte concentration and analysis of electrolyte concentration effect to color removal percentage of wastewater. The result shows that the electrode composition consisted of iron, chromium, nickel and silica with the main composition of iron in the amount of 72.2%. After electrolysis on variations of electrolyte concentration and analysis of color removal percentage of wastewater, obtained that the largest of color removal percentage on the use of electrolyte concentration of 3% in the amount of 98.81%
Rapid Analysis of Adulterated Dexamethasone in Joint-Pain Killer Traditional Herbal Medicine (THM) Using Infrared Spectroscopy Ardi Nugroho; Fany Devita Ritonga
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 18, ISSUE 2, August 2018
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol18.iss2.art5

Abstract

A rapid, non-destructive and reagent-free infrared spectroscopy combined with Partial Least Square (PLS) has been developed for the dexamethasone quantification in joint-pain killer traditional herbal medicine (THM). The main aim of this study is to select the best wavenumbers that are capable of providing the high coefficient of determination (R2), low values of Root Mean Square Error of Calibration (RMSEC), Root Mean Square Error of Cross Validation (RMSECV)  and predictive residual error sum of squares (PRESS). Finally, wavenumbers 3646, 3642, 2461, 2453, 2432, 2406, 2229, 2209, 2197, 2097, 2092, 2064, 2059, 2047, 2026, 2009, 1969, and 1513 cm-1 were selected for the prediction of dexamethasone in the joint-pain killer traditional herbal medicine. The correlation between the actual values of dexamethasone determined in joint-pain killer traditional herbal medicine using infrared spectroscopy combined with PLS revealed the R2 values of 0.9988. The RMSEC values obtained 0,009455. The PRESS and RMSECV value obtained as the results of cross-validation model selection for dexamethasone in joint-pain killer traditional herbal medicine were 0,0022721.00 and 0,02902, respectively. The high value of R2 and low value of RMSEC, RMSECV and PRESS indicated that this method had high accuracy and precision in a validated condition for the dexamethasone quantification in the joint-pain killer traditional herbal medicine. These results indicated that infrared spectroscopy combined with PLS can be an alternative method for the dexamethasone determination in joint-pain killer traditional herbal medicine.his part contains English version of the abstract. The abstract presents background, method of the research/ literary study and discussion. The abstract consist of maximum 300 words. All sentence must represent the core of research presented in good structure of sentences.
Chemical Stability of Cd(II) and Cu(II) Ionic Imprinted Amino-Silica Hybrid Material in Solution Media Buhani Buhani
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 13, ISSUE 1, February 2012
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Chemical stability of Cd(II) and Cu(II) ionic imprinted amino-silica (HAS) material of (i-Cd-HAS and i-Cu-HAS) derived from silica modification with active compound (3-aminopropyl)-trimethoxysilane (3-APTMS) has been studied in solution media.  Stability test was performed with HNO3 0.1 M (pH 1.35) to investigate material stability at low pH condition, acetat buffer at pH 5.22 for adsorption process optimum pH condition, and in the water (pH 9.34) for base condition.  Material characteristics were carried out with infrared spectrophotometer (IR) and atomic absorption spectrophotometer (AAS).  At interaction time of 4 days in acid and neutral condition, i-Cd-HAS is more stable than i-Cu-HAS with % Si left in material 95.89 % (acid media), 43.82 % (close to neutral), and 9.39 % (base media).Keywords: chemical stability, amino-silica hybrid, ionic imprinting technique.
Aktivitas Penghambatan Migrasi Leukosit Ekstrak Diklorometana Daun Sendok (Plantago major) pada Mencit yang Diinduksi Tioglikolat Asih Triastuti
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 19, ISSUE 2, August 2019
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol19.iss2.art11

Abstract

Plantago major (daun sendok) telah dilaporkan memiliki beberapa aktivitas farmakologi seperti antibakteri, antidiabetes, antioksidan, dan membantu menyembuhkan luka. Tujuan penelitian ini untuk mengetahui aktivitas antiinflamasi ekstrak diklorometana P.major pada model peritonitis yang diinduksi tioglikolat. Ekstrak diklorometana P.major diuji aktivitasnya sebagai antiinflamasi melalui penghambatan migrasi leukosit. Mencit jantan Swiss dibagi menjadi 7 kelompok yaitu kelompok normal (tanpa perlakuan), kontrol negatif (pemberian tioglikolat), kontrol positif (pemberian indometasin), kontrol pelarut (dimetilsulfoksida/DMSO 10%), dan kelompok perlakuan ekstrak P.major dengan dosis 200, 400, dan 600 mg/kgBB. Jumlah leukosit dihitung dengan hemositometer dan dianalisis dengan Kruskal-Wallis dan Mann-Whitney. Hasil menunjukkan bahwa ekstrak dengan dosis 200, 400, dan 600 mg/kgBB mampu menghambat migrasi leukosit pada mencit yang telah diinduksi tioglikolat ditandai dengan penurunan jumlah leukosit secara signifikan (p<0,05) meskipun efektivitasnya lebih rendah dibandingkan dengan indometasin. Kemampuan ekstrak dalam menghambat migrasi leukosit semakin besar seiring dengan peningkatan dosis. Ekstrak diklorometana P. major mengandung asam ursolat yang sebelumnya telah dilaporkan aktif menghambat enzim siklooksigenase 2 (COX-2). Hal ini memperkuat dukungan P. major sebagai agen anti inflamasi dan sangat potential untuk dikembangkan sebagai sediaan farmasi.
PEMURNIAN, IDENTIFIKASI DAN UJI AKTIVITAS ANTIDIABETES SENYAWA METABOLIT SEKUNDER EKSTRAK ETIL ASETAT DAUN KACA PIRING (Gardenia augusta, Merr) Chasani Mochamad; Hartiwi Diastuti; Rizka Aprilia
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 12, ISSUE 2, August 2011
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Gardenia augusta, Merr is one of the family Rubiaceae species used as traditional medicine because it has medicinal properties, such as drug diabetes mellitus. These research have been done on this plant, among others, is the ability of the extract and the active fraction ethyl acetate extract of Gardenia augusta, Merr leaves to lowering blood sugar levels of rats. The purpose of this research was to purification of the active fraction of the ethyl acetate extract and identify the secondary metabolites of Gardenia augusta, Merr leaves as well as test that can be used antidiabetic. Purification was done by column chromatography which was eluted with n-hexane: ethyl acetate (7:1) and obtained four groups of fractions. The fractions of the TLC to obtain pure isolates F2 fraction with melting point 158-160 &deg; C. The antidiabetic activity of the isolate F2 fractions were tested into white rats by glucose tolerance methods. Isolate F2 fraction was identified by using UV and IR spectrophotometer. The results showed that isolate F2 fraction of ethyl acetate extract of Gardenia augusta, Merr leaves has a hypoglycemic effect of 21.05%. The secondary metabolites test showed a positive result for steroids. Analysis using UV spectrophotometer showed the electronic transition n &rarr; л * and transition л &rarr; л *. Analysis using IR spectrophotometric showed functional groups OH, C = O, CO, aliphatic C-H, C = C, C-C, CH3 symmetric and C-H outside the field. Key word: Gardenia augusta, Merr, diabetes mellitus, steroids
Synthesis of Mg/Al Hydrotalcite by Using Low Supersaturated Precipitation Method with Variation of Mole Ratio Christanty Wahyu Septyaningrum; Sri Handayani; Cahyorini Kusumawardani; Kun Sri Budiasih
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 14, ISSUE 2, August 2014
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol14.iss2.art1

Abstract

This research aims to synthesize Mg/Al hydrotalcite with mole ratio variations of Mg/Al precursor through low supersaturated precipitation method. Mg/Al hydrotalcite was synthesized with Mg/Al mole ratio variation of 1:1, 2:1, 3:1, and 4:1. Mg/Al hydrotalcite was synthesized using NaOH and Na2CO3 base solutions. The mixture of precursor was stirred for 2 hours then treated by hydrothermal at 100 °C for 4 hours. Results of the synthesis Mg/Al hydrotalcite with mole ratio variations is a white powder. The formation of the structure of Mg/Al hydrotalcite showed by certain peaks in the FTIR spectra and XRD diffractogram.The results of data analysisshowed that variation of mole ratio Mg/Alcauses a shift of peak in the XRD diffractogram shifted towards the left along with a comparative increase in mole ratio Mg/Al, but the main functional groups on the compound Mg/Al hydrotalcite increasingly formed with better.
Optimation Of Ethanol Extract Of Centella Asiatica And Cresintia Cujete Composition As Natural Antioxidant Source Mustofa Ahda; Fiqrirozi Fiqrirozi; Gina Noor Habibah; Mas Ulfah Lestari; Tomy Hardianto; Yuni Andriani
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 16, ISSUE 1, February 2016
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol16.iss1.art2

Abstract

Pengembangan antioksidan alami dalam pemanfaatan pegagan (Centella asiatica) dan majapahit (Cresintia cujete) merupakan potensi yang besar. Penelitian ini telah melakukan optimasi komposisi ekstrak etanol pegagan (Centella asiatica) dan majapahit (Cresintia cujete) sebagai sumber antioksidan dengan dilakukan uji aktifitas penangkapan radikal bebas terhadap DPPH. Hasil penelitian menunjukkan bahwa baik ekstrak etanol pegagan (Centella asiatica) dan majapahit (Cresintia cujete) memiliki kandungan total fenol yang ditunjukkan dengan adanya kemampuan mereduksi reagen Folin Ciocalteu menjadi berwarna biru. Hasil optimasi komposisi ekstrak pegagan (Centella asiatica): majapahit (Cresintia cujete) = 30:70 memiliki aktifitas penangkapan radikal bebas terhadap DPPH yang paling baik dibandingkan ekstraks etanol pegagan (Centella asiatica) dan majapahit (Cresintia cujete). Nilai IC50 untuk komposisi ekstrak etanol pegagan (Centella asiatica): majapahit (Cresintia cujete) = 30:70 sebesar 0,103 mg/mL.
Effect of Adding 1,4-Butanediol and Polyethylene Glycol (PEG) 1000 to the Ease of Bioplastic Biodegradation from Jackfruit Beans (Artocarpus heterophyllus) Argo Khoirul Anas; Nanang Rudianto Ariefta; Yuni Nurfiana; Eli Rohaeti
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 16, ISSUE 2, August 2016
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol16.iss2.art6

Abstract

The influences of plasticizer on the biodegradability of bioplastic film synthesized from starch obtained from jackfruit seeds with a help of Acetobacter xylinum were investigated. In this study, 1,4-butanediol and polyethylene glycol (PEG) 1000 were used as plasticizer. The biodegradation behavior of the resulted bioplastic films was characterized by calculating changes in their mass loss and rate of mass loss. The Fourier Transform Infrared (FTIR) spectroscopy was also conducted to analyze theirfunctional group. The results shows that all the bioplastic films were well biodegradated, where PEG 1000 with concentration of 0,5% and 1,0% can successfully improve the biodegradability of bioplastic film. Meanwhile, the used of 1,4-butanediol with concentration of 0,5% and 1,0% can increase and decrease the biodegradability of sample, respectively.
Effervescent Tablet Formulation Melinjo Seed Extract (Gnetum gnemon L.) Using PEG 6000 As Lubricant and Citric Acid - Tartaric Acids As Acid Sources Puput Andi Apsari; Dewi Nur Eka Sari; Aris Perdana Kusuma; Oktavia Indrati
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 18, ISSUE 1, February 2018
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/Eksakta.vol18.iss1.art4

Abstract

Melinjo seeds (Gnetum gnemon L.) have antioxidant properties one of which is from phenol compounds. However, there is no pharmaceutical dosage form of melinjo seeds especially effervescent tablet. The purpose of this research was to determine the best variation of citric-tartaric acid and PEG 6000 from effervescent tablet of melinjo seed extract. The effervescent tablet of melinjo seed extract were formulated with variation of citric-tartaric acid 25%:75%, 65%:35%, 50%:50%, 20%:80% and PEG 6000 0%, 2%, 3%, up to 5%. The effervescent tablet were made by melting parts of acids and bases, added with extract and other ingredients. The evaluation included flow and powder tapping, tablet hardness, weight variation, friability, and tablet solubility test. The data were analyzed by comparing approaches based on the requirements of Pharmacopeia Indonesia V andUnited States of Pharmacopeia 36.Variations of equal amount of citric-tartaric acid produced hard effervescent tablets with small friability. The unbalanced acid concentration resulted in higher friability. The greater the concentration of citric acid resulted in the longer solubility of the tablet. The addition of PEG 6000 made the flow time of granules quicker, while higher concentrations would increase the hardness of tablets and accelerate the soluble time. Excessively high concentrations resulted in a high degree of friability. Variation of citric-tartaric acid and PEG 6000 influenced physical properties of granule and effervescent tablet extract of melinjo seeds, such as flowability, hardness, friability, and solubility of the tablet.
Extraction of Papaya Leaves (Carica papaya L.) Using Ultrasonic Cleaner Lina Fauziah; Miladiatul Wakidah
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 19, ISSUE 1, February 2019
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol19.iss1.art4

Abstract

Extraction of papaya leaves (Carica papaya L.) using Ultrasonic Cleaner has been performed. Papaya leaves were extracted for 6 hours in a methanol as solvent. The results of phytochemical screening showed that methanol extract contained secondary metabolites of flavonoids, alkaloids, tepenoid, saponin, and phenolic classes. Methanol extract was then partitioned liquid-liquid with n-hexane. Quantitative analysis of partitioning of n-hexane using papaya leaves using Gas Chromatography-Mass Spectrometry (GC-MS) showed the presence of neophytadiene (1.59%), palmitic acid (1.35%) and methyl linolenate (3.33%). The results showed that Ultrasonic Cleaner can be used to ultrasonic-assisted extraction of natural products especially for papaya leaves.

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