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INDONESIA
JURNAL ATOMIK
Published by Universitas Mulawarman
ISSN : 25490052     EISSN : 25490052     DOI : -
Core Subject : Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science
Jurnal Atomik (JA) is published twice a year (March and August) by Department of Chemistry, Faculty of Mathematics and Natural Sciences, Mulawarman University. Jurnal Atomik is a media for graduate students of Department of Chemistry to publish their research articles in Chemistry field including Analytical Chemistry, Inorganic Chemistry, Physical Chemistry, Organic Chemistry, and Biochemistry. The research articles that be submitted to Jurnal Atomik have to be approved by Editorial Board and in accordance with the rules of writing approved by Editor of Jurnal Atomik.
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Articles 12 Documents
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Search results for , issue "Vol 4 No 1 (2019)" : 12 Documents clear
MODIFICATION AND CHARACTERIZATION OF TASIKMALAYA NATURAL ZEOLITES WITH Fe2O3 Oktaviani, Reka; Hindryawati, Noor; Panggabean, Aman Sentosa
JURNAL ATOMIK Vol 4 No 1 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Research on natural zeolite has been carried out as a porous material modified by Fe2O3 semiconductor material. Starting with natural zeolite preparation, dealumination by activating it using HCl solution, modifying natural zeolite with Fe2O3 using FeCl3 and NaOH solution, then characterized using X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and test the surface area using a Methylene Blue solution. The results of the XRF analysis showed that the composition of Fe2O3 increased after it was modified to 38.022%, which was previously namely 3.193%. The results of SEM analysis showed changes in the morphology of natural zeolites after being modified with Fe2O3. The results of the XRD analysis showed that there was a diffraction peak which provided information that the sample contained Fe2O3. Zeolite-Fe2O3 has a surface area of ??110,2707 m2/g. Keywords : natural zeolite, Fe2O3, semiconduktor
ANTIHYPERGLYCEMIC ACTIVITY OF JAMBU MAWAR LEAVES EXTRACT (Syzygium jambos (L.) Aston) ON MALE RABBIT ALLOXANT INDUCTED Prastiwi, Mela; Kartika, Rudi; Hindryawati, Noor
JURNAL ATOMIK Vol 4 No 1 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Antihyperglycemic activity of jambu mawar leaves extract (Syzygium jambos (L.) Aston) to lower blood glucose levels in male rabbits (Oryctolagus cuniculus) induced by alloxant has been conducted. Simplicia jambu mawar leaves (Syzygium jambos (L.) Aston) were macerated using ethanol 96%. The testing activity of antihyperglycemic done experimentally et the laboratory with each dose of 374.5 mg/Kg and 749 mg/Kg given orally on the male rabbits in the induction alloxant. Measurement of blood glucose levels was done on the (7, 14, 21, 28 and 32) by using a glucometer and glucose test strips. The ethanol extracts of jambu mawar leaves (Syzygium jambos (L.) Aston) revealed the effect by decreasely the blood glucose levels in male rabbits induced by alloxant. Keywords: Jambu Mawar leaves (Syzygium jambos (L.) Aston), Antihyperglicemic, Alloxant and glucometer.
TEST OF ANTIOXIDANT ACTIVITY (DPPH METHOD) OF METHANOL EXTRACT AND ITS FRACTIONS FROM LEAVES OF KNOBWEED (Hyptis capitata Jacq.) Zuliani, Nur Endah; Erwin, Erwin; Kusuma, Irawan Wijaya
JURNAL ATOMIK Vol 4 No 1 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Test of antioxidant activity of methanol extract and its fractions from leaves of Knobweed (Hyptis capitata Jacq.) were carried out. This research was conducted to determine antioxidant activity in the fractions resulting from column chromatography separation. Antioxidant activity test was carried out by DPPH method while phytochemical was carried out by test colour of TLC method. The results of the first column chromatographic separation produced 18 fractions. The results of the first column antioxidant activity test showed that the value of antioxidant activity ranged from 0.923-81.849% at a sample concentration of 100 ppm. The second column chromatographic separation was carried out in fraction 16. The results of the second column antioxidant activity test produced 18 fractions. The results of the second column antioxidant activity test showed that the value of antioxidant activity ranged from 10.384-59.769% at a sample concentration of 50 ppm. The second column antioxidant activity test produced fraction 15 and fraction 16 showed IC50 values ??of 40.321 and 56.812 ppm respectively. Phytochemical test results showed that fraction 15 and fraction 16 contained alkaloid compounds, flavonoids, polyphenols and steroids/terpenoids. Keywords: Antioxidant, knobweed (Hyptis capitata Jacq), column chromatography, antioxidants, DPPH, secondary metabolites
ISOLATION AND CHARACTERIZATION OF FLAVONOID COMPOUNDS FROM ETHYL ACETATE FRACTION OF Macaranga hosei LEAVES Frenki Alan Nuari; Eva Marliana; Daniel Daniel
JURNAL ATOMIK Vol 4 No 1 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Isolation and characterization of flavonoid compounds in the third fraction of ethyl acetate of Macaranga hosei leaves. The separation process in the third fraction of ethyl acetate was perfomed using gravity column chromatography with gradient elution method. The obtained isolate was tested for its purity using thin layer chromatography with various eluents named n-hexane, chloroform, acetone, ethyl acetate and methanol with Rf values 0; 0,17; 0,86; 0,97 and 0,81 respectively. The isolate was characterized as MH-1 phenolic compound as much as 30 mg in the form of oil. Analysis of MH-1 compound with UV showed 2 peaks at ? 295 nm (band II) and 340 nm (band I). Analysis of MH-1 compounds with FT-IR showed OH functional groups, aliphatic C-H, aromatic C-H, C=O, aromatic C=C, C-O-C and C-OH. Based on the results of the UV and FT-IR spectra, the MH-1 compound is assumed to be of flavonoids.
PREPARATION OF METHYL SALICYLATE USE THE ACID CATALYST BY WITHOUT SOLVENTS METHOD Widyanto Saptawan Priambodo; Daniel Daniel; Chairul Saleh
JURNAL ATOMIK Vol 4 No 1 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Preparation of methyl salicylate use the acid catalyst by without solvents method has been done. Preparation of methyl salicylate was carried out by reacting salicylic acid with methanol and use sulfonic acid as a catalyst. The raeaction was use reflux method at 60-70 oC for 3 hours. The result of preparation of methyl salicylate were it has a yellow clear solution (like oil) and has a distinctive smell (like gandapura oil). From the result of FT-IR analysis showed the functional groups O-H phenol, C-H sp2, C-H sp3, C=O ester, C=C aromatic, C-O-C ester and C-OH phenol. Based on these results it is known that the methyl salicylate has been formed.
ISOLATION AND CHARACTERIZATION OF FLAVONOID COMPOUNDS FROM ETHYL ACETATE FRACTION OF Macaranga lamellata Whitmore LEAVES Sherly Indah Puspita; Eva Marliana; Daniel Daniel
JURNAL ATOMIK Vol 4 No 1 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Isolation and characterization of flavonoid compounds from ethyl acetate fraction of Macaranga lamellata Whitmore leaves have been done in this research. Macaranga lamellata Whitmore leaves was macerated using methanol and fractionated with n-hexane and ethyl acetate. The separation process of ethyl acetate fraction was conducted using gravity column chromatography by Step Gradient Polarity (SGP) method. The isolate was tested for its purity using thin layer chromatography with various eluents i.e. n-hexane, chloroform, methanol, acetone and ethyl acetate, with Rf values were 0; 0,7857; 0,8333; 0,9048 and 0,9286 respectively. The result indicated that the isolate was obtained as ML1 (3 mg) belong to flavonoid compound in the form of oil. Analysis of ML1 compound using UV displayed 2 peaks at ? 291 nm (band II) and 342 nm (band I). Analysis of ML1 compound using FT-IR displayed functional groups -OH, C-H aromatic, C-H aliphatic, C=C aromatic, C=O, C-OH and C-O-C. Based on the results of UV and FT-IR spectra, ML1 compound was suspected to contain flavonoid compound.
SCREENING AND PHYTOCHEMICALS TEST OF EXTRACT ENDHOPHYTES BACTERIA FROM STEM OF PACING (Costus sp.) Aristina, Reza Fauziah; Astuti, Winni; Pratiwi, Djihan Ryn
JURNAL ATOMIK Vol 4 No 1 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Pacing plants (Costus sp.) Potentially as medicinal plants, but there is no research on the endophytic bacteria they contain. This research was conducted to filter endophytic bacteria from Pacing stems (Costus sp.) And to find out the secondary metabolites contained by each endophytic bacteria. Endophytic bacteria obtained from Pacing Stems (Costus sp.) Totaled 17 colonies. Crude extracts from all bacterial colonies containing alkaloids, 15 crude extracts containing saponins. Steroids are only contained by 3 types of bacterial extracts and triterpenoids are only contained by 2 types of bacterial extract.
UTILIZATION OF ETHANOL FRACTION OF JARUM TUJUH BILAH LEAVES (Pereskia bleo (Kunth) D.C) AS XANTHINE OXIDASE INHIBITOR IN THE FORMATION OF URID ACID Sarwawan, Ade Putri Hawiyah; Sitorus, Saibun; Gunawan, Rahmat
JURNAL ATOMIK Vol 4 No 1 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

This research was conducted to determine the content of secondary metabolite contained in the extract and ethanol fraction of “Jarum tujuh bilah” leaves (Pereskia bleo (Kunth) DC) and and inhibition of xanthine oxidase activity obtained from the isolation of cow's milk. The xanthine oxidase activity is measured at a wavelength of 290 nm. The results of this research indicate that in the ethanol extract and fraction of “jarum tujuh bilah” leaves have the secondary flavonoids, alkaloids and phenolic compounds. The highest inhibition of xanthine oxidase activity in the ethanol extract of “jarum tujuh bilah” leaves was 91.67%, while the inhibition of allopurinol was 50% and the ethanol fraction of “jarum tujuh bilah” leaves was seven blades by 90%.
THE OPTIMUM PRODUCTION TIME OF LIPASE FROM ENDOPHYTIC BACTERIA LEAVES OF Macaranga hullettii King ex Hook.f. Marliani, Nelly; Astuti, Winni; Kartika, Rudi
JURNAL ATOMIK Vol 4 No 1 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Endophyte bacteria isolate from the leaves of Macaranga hullettii King ex Hook.f. has potential to producer lipase. In the study was conducted to filter lipase producing endophyte bacteria from Macaranga hullettii King ex Hook.f. and determine the optimum production time. The results of screening endophyte bacteria showed 6 isolates of endophyte bacteria that had the potential to produce lipase and 1 isolate was chosen which is number 5 to determine the optimum production time. The optimum production time of lipase from Macaranga hullettii King ex Hook.f. leaves for 72 hours with activity that is 2.92 U/mL.
ETHANOL PRODUCTION FROM SAGO FERMENTATION USING Saccharomyces cerevisiae AND GELATIN AS A SOURCE OF NUTRIENT FOR MICROBA -, Firmansyah; Sitorus, Saibun; Kartika, Rudi
JURNAL ATOMIK Vol 4 No 1 (2019)
Publisher : Jurusan Kimia FMIPA UNMUL

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Abstract

Ethanol from sago flour through fermentation using Saccharomyces cerevisiae and gelatin as nutrition for microbe have been done. The making of ethanol through processes of hydrolysis, fermentation, distillation and analysis of ethanol concentration using Gas Chromatography instrument. The hydrolysis process of sago flour are used two steps which is liquification and saccharification using alpha-amylase and glucoamylase which will convert the starch into glucose. The fermentation process of glucose are done with time variation 5, 6, 7 and 8 days to the concentration variation of gelatin addition which is 0,5 %, 1 % and 1,5 % (w/v) as nutrition source for microbe. The obtained ethanol from fermentation process are purified through distillation. Furthermore, analysis of ethanol concentration are used Gas Chromatography. The analysis results are showed the highest ethanol concentration obtained in 7 days with gelatin addition 1,5 % are 79,50 %.

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