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Contact Name
Ni Putu Diantariani
Contact Email
jurnalkimia@unud.ac.id
Phone
+628123640424
Journal Mail Official
jurnalkimia@unud.ac.id
Editorial Address
Program Studi Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Udayana Kampus Bukit Jimbaran, Jimbaran, Bali, Indonesia
Location
Kab. badung,
Bali
INDONESIA
Jurnal Kimia (Journal of Chemistry)
Published by Universitas Udayana
ISSN : 19079850     EISSN : 25992740     DOI : 10.24843/JCHEM
Core Subject : Science,
Jurnal Kimia (Journal of Chemistry) publishes papers on all aspects of fundamental and applied chemistry. The journal is naturally broad in scope, welcomes submissions from across a range of disciplines, and reports both theoretical and experimental studies.
Articles 463 Documents
PENENTUAN KADAR GLUKOSA DAN FRUKTOSA PADA MADU RANDU DAN MADU KELENGKENG DENGAN METODE KROMATOGRAFI CAIR KINERJA TINGGI K. Ratnayani; N. M. A. Dwi Adhi S.; I G. A. M. A. S. Gitadewi
Jurnal Kimia (Journal of Chemistry) Vol. 2, No. 2 Juli 2008
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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Abstract

Honey is composed of reducing sugars i.e. glucose, fructose, and maltose. The concentration of sugar honeyis determined as total reducing sugars, so the concentration of each sugar which compose the honey is not known.The research aims to determine the concentrations of glucose and fructose of honey from different cotton tree honeyand longan honey HPLC using.The HPLC operational condition was as follows 80oC of column temperature and 1 mL/minutes of flowrate, using metacarb 87C column and deionized watr as eluent. The detection was carried out by using refractiveindex detector, where glucose and fructose can be separated at retention times of 6 and 7 minutes.The result of research showed that the concentration of glucose in cotton tree honey was 27.13 % and inlongan honey was 28.09 %. the concentration of fructose in cotton tree honey was 40.99 % and in longan honey was40.03 %. Thees results showed that the quality standard on the total concentration of reducing sugar (60 %) was metby both types of honey. The total concentration of reducing sugar of cotton tree honey was 68.12 % and of longanhoney was 68.12 %.
KARAKTERISASI KEASAMAN DAN LUAS PERMUKAAN TEMPURUNG KELAPA HIJAU (Cocos nucifera) DAN PEMANFAATANNYA SEBAGAI BIOSORBEN ION Cd2+ I. A. G. Widihati; Oka Ratnayani; Yunita Angelina
Jurnal Kimia (Journal of Chemistry) Vol. 4, No. 1 Januari 2010
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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Abstract

The characterization of surface acidity and area of green coconut shell (Cocos nucifera) and the applicationof the shell as biosorbent of Cd2+ have been conducted in this study. The physico-chemical characterization of thebiosorbent was observed by surface acidity measurement using gravimetry, acid base titration, and infraredspectrofotometry, and the surface area was determined by spectrofotometer UV-Vis using methylen blue method.The use of this shell as biosorbent of Cd2+ was studied by the equilibrium time, the adsorption isotherms, theadsorption capacity, and the influence of pH on adsorption capacity.The result showed that the acidity surface of the green coconut shell determined using gravimetric and acidbase titration was 39.2647 mmol/g and 39.8843 mmol/g. The surface area was 36.5961 m2/g. The adsorption capacityof green coconut shell (Cocos nucifera) as biosorbent of Cd2+ was 2.5135 mg/g at 4 hours equilibrium time with Cd2+and initial concentration (adsorption isotherms) of 50 ppm. At pH 11.00 the adsorption capacity of biosorbent onCd2+ increased to 2.7857 mg/g.
ANALISIS ASAM LEMAK RUMPUT LAUT Ulva reticulata Forsskal YANG DIPEROLEH DARI PANTAI SEGARA SANUR Ni Made Puspawati; Ni Gusti Ayu Made Dwi Suastuti; Dewa Ayu Indra Dewi
Jurnal Kimia (Journal of Chemistry) Vol. 5, No. 2 Juli 2011
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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Abstract

Lipid content and fatty acid composition of seaweed Ulva reticulata Forsskal obtained from Segara Sanur Beach have been analyzed. Lipid was extracted from this seaweed using soxhlet extractor with chloroform:methanol (2:1) as solvent, while the composition of fatty acid was analysed using gas chromatrography accomplished by a mixture of 37 standard fatty acids (ST37AL85.D01). It was found that Ulva reticulata Forsskal contained (1,41±0,04)% (w/w) of crude lipids. The crude lipid was composed of 11 major fatty acids including pentadecanoic acid (12,08%), heptadecanoic acid (40,00%), cis-10-heptadecenoic acid (4,37%), oleic acid (1,77%), linolelaidic acid (4,31%), linoleic acid (13,01%), arachidic acid (4,71%), g-linolenic acid (2,27%), heneicosanoic acid (7,58%), cis-11,14-eicosedienoic acid (8,19%), and cis-8,11,14-eicosetrienoic acid (1,71%).
ANALISIS VARIASI NUKLEOTIDA DAERAH D-LOOP DNA MITOKONDRIA PADA SATU INDIVIDU SUKU BALI NORMAL Ketut Ratnayani; I Nengah Wirajana; A. A. I. A. M. Laksmiwati
Jurnal Kimia (Journal of Chemistry) Vol. 1, No. 1 Januari 2007
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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Abstract

Human mitochondrial DNA (mtDNA) has higher polimorfism level than nucleous genom, especially in theD-Loop region, which is a non coding region and the most polymorfic region in the mitochondrial genom. Theanalysis of variation of nucleotide sequence of D-Loop region can be used to determine the individual or ethnicidentity and also maternal familiar relationship. The research aims to determine nucleotide variant on Balineseindividue, which can be used as data base in determination of mtDNA genetical profile of Balinese ethnic in a biggerscale.To achieve the aims of the research, way the nucleotide sequence of one normal Balinese individue usingthe epithelia cells in the saliva. The methods were :1) the isolation of sample mtDNA, 2) the amplification of the DLoopregion of mtDNA by PCR, 3) sequencing and analysis of nucleotides sequence.The 0,4 kb fragment of the D-loop region mtDNA of the sample were successfully amplified, andsequenced of 402 pb. The research found 6 new variants or morfe different from Cambridge or Anderson sequence :variant 16223C®T, 16249T®C, 16259C®T, 16278C®T, 16316A®G, 16375C®A. The research also found thedeletion of T nucleotide on position 16362.
KADAR TOTAL SENYAWA FENOLAT PADA MADU RANDU DAN MADU KELENGKENG SERTA UJI AKTIVITAS ANTIRADIKAL BEBAS DENGAN METODE DPPH (Difenilpikril Hidrazil) Ketut Ratnayani; A. A. I. A Mayun Laksmiwati; Ni P. Indah Septian P.
Jurnal Kimia (Journal of Chemistry) Vol. 6, No. 2 Juli 2012
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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Abstract

Honey contains a variety of compounds which function as antioxidants one of which is a phenolic compound. Monoflora honey used in this study were randu and kelengkeng honey from certain brand distributed on the market. Qualitative test with 5% FeCl3 result showed that both types of honey contain phenolic compounds. The total phenolic compounds was determined by spectrophotometry using the Folin-Ciocalteu method and gallic acid as standards, while the free radical activity was tested using the method of  DPPH (Difenilpikril hidrazil). The result of research showed that the total content of phenolic compound in randu was 1375,89 ± 134,10 mg GAE/kg, while kelengkeng honey was 1136,49 ± 39,62 mg GAE/kg. The % reduction of free radical in randu honey at the 5th minute was 62,55 ± 4,4407 % and at the 60th minute was 95,39 ± 8,5507 %. The % reduction of free radical for kelengkeng honey at the 5th minute was 44,12 ± 1,3433 %, 60th minute was 62,00 ± 0,8612 %, and for the standard of gallic acid the % reduction of free radical at the 5th minute was 41,03% and the 60th minute was 92,00%. Therefore, there was a linear correlation between the total phenolic compound of randu honey and kelengkeng honey with % reduction of its free radical.
AMPLIFIKASI FRAGMEN 0,4 KB DAERAH D-LOOP DNA MITOKONDRIA LIMA INDIVIDU SUKU BALI TANPA HUBUNGAN KEKERABATAN DENGAN METODE POLYMERASE CHAIN REACTION (PCR) K. Ratnayani; Sagun Chandra Yowani; Liangky Syane S
Jurnal Kimia (Journal of Chemistry) Vol. 3, No. 1 Januari 2009
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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Abstract

The human mitochondrial DNA (mtDNA) has higher polimorfism level than nucleous genom, and it ismaternally transmitted. D-Loop is a non-sense region in human mtDNA that has the highest polimorfism. Generally,the aim of this research is to find out the variation in D-Loop region of mtDNA in some Balinese without familycorrelation. For that reason, this research was brought out to determine the sequences of nucleotide of D-Loop regionin five normal Balinese from different families without correlation. The specific aim of this research is to amplify the0,4 kb fragment of mtDNA D-Loop region in five Balinese above, using the PCR methode. In conducting the PCR,the temperature of annealing of primer and the weight of template of mtDNA were optimized. Several phases thathave been conducted : 1). Lisis of the cavum oris epithelium; 2). Quantation of DNA; 3). Reaction PCR; 4). Result ofPCR detection with agarosa gel electroforesisThe result of this research is the amplification of 0,4 kb fragment of D-Loop region in mtDNA by PCR.This research also found the optimum temperature annealing, which was 55 0C, and the optimum weight of templateof DNA which was ± 0,688 ?g.
EFEKTIVITAS SISTEM PENGOLAHAN INSTALASI PENGOLAHAN AIR LIMBAH SUWUNG DENPASAR TERHADAP KADAR BOD, COD, DAN AMONIA Wahyu Dwijani Sulihingtyas; I W. Budiarsa Suyasa; Ni M. Indra Wahyuni
Jurnal Kimia (Journal of Chemistry) Vol. 4, No. 2 Juli 2010
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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Abstract

The effectivity of waste water treatment systems in Suwung Waste Water Treatmant Installation Denpasar,was investigated, by analyzing its effluent Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD)and ammonia contents. The aims of the research are to determine the effectivity of each stage of waste watertreatment and the optimum detention time of waste water in aerated lagoon and sedimentation pond, in order toreduce the BOD, COD and ammonia concentration.The results showed that the effectivity of treatment systems of waste water in Suwung Denpasar was low.The percentages of the reduction of BOD5, COD and ammonia in content stage I were 14.29, 15.66, and 33.74%respectively. More over, the reduction percentages in stage II were 20.83, 14.43, and 17.39% respectively. On theother hand, the reduction percentages from the initial to final stages were 32.14% for BOD5, 27.83% for COD and45.26% for ammonia. The optimum detention time of waste water in aerated lagoon and sedimentation pond forreducing parameters was 5 day and 40 hour respectivel
DISTRIBUSI Pb DAN Cu PADA BERBAGAI UKURAN PARTIKEL SEDIMEN DI PELABUHAN BENOA E. Sahara
Jurnal Kimia (Journal of Chemistry) Vol. 3, No. 2 Juli 2009
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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Abstract

This paper discusses the distribution of Pb and Cu in various particle sizes of sediment collected fromBenoa Bay, Bali. The particle sizes of sediment observed were >300; 300 – 100; 100 – 88,88 – 63 and <63 mm. Priorto the determination of both heavy metals, the sediments were digested with the mixture of HNO3 and H2O2 (1:1) at120oC. The measurements of the metal concentrations were performed by the use of Atomic AbsorptionSpectroscopy technique with the application of calibration method.It was found that the smaller the particle sizes the higher the metals concentraions were. The sediment of>300 mm contained Pb and Cu 0,74 – 0,77 mg/kg and 0,15 – 9,24 mg/kg, respectively. On the other hand, thesediment of < 63mm contained 21,36 – 53,01 mg/kg Pb and 104,14 – 132,82 mg/kg Cu. It was also observed thatthe distribution of particle sizes of all sediment collected from four sampling locations had similar patern.
AKTIVITAS ANTIOKSIDAN DAN ANTIJAMUR SENYAWA ATSIRI BUNGA CEMPAKA PUTIH (Michelia alba) I Gusti Agung Gede Bawa
Jurnal Kimia (Journal of Chemistry) Vol. 5, No. 1 Januari 2011
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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Abstract

Isolation of white tropical magnolia’s (Michelia alba) essential oil by maseration method was carried out. Antifungal activity test was conducted by measuring resistibility against Candida albicans growth, whereas antioxidant activity test was conducted with spectroscopy technique by using Difenilpikril hidrazin (DPPH) as antifree radical. Compound contents analysis of the isolate was carried out by Gas Chromatography-Mass spectroscopy (GC-MS).From 1000 grams of white tropical magnolia’s flower 3.18 grams n-hexane extract, 1.19 grams of chloroform extract, and 0.88 grams of ethyl acetate extract were gained. The retardation area for the three extracts were 0 mm. Free radical damping percentage were 24.47% for the first 5 minutes and 79.14% after 60 minutes for n-hexane extract, 21.72% for the first five minutes and 25% after 60 minutes for chloroform extract, 21.93% for the first five minutes and 39.87% after 60 minutes for ethyl acetate extract. Compound analysis was carried out for n-hexane extract that have the highest antioxidant activity. GC-MS analysis showed that white tropical magnolia’s flower had 6 major component i.e. 1,3-Benzioxole,5-(2-propenyl), cyclohexane; 1-ethenyl-1-methyl-2,4-bis (1-methylethenyl); Butanoic acid; 3-methyl-,2-phenylethyl ester; 9,12-Octadecadienoic acid, methyl ester; Tricosane; Pentacosane.
POTENSI KHITIN/ KHITOSAN DARI KULIT UDANG SEBAGAI BIOKOAGULAN PENJERNIH AIR Manuntun Manurung
Jurnal Kimia (Journal of Chemistry) Vol. 5, No. 2 Juli 2011
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

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Abstract

The potency of chitin/chitosan isolated from shrimp waste as coagulant to reduce turbidity of water have been studied in this research. The chitin/chitosan was isolated through some processes including deproteination, demineralization and deacetylation.The chitin/chitosan obtained was characterized using FTIR and the degree of deacetylation was calculated based on FTIR spectra. The deacetylation degree was found 64.86%, which mean the chitin mixed with chitosan or crude chitosan. In which using concentration 0.5% alumina can only reduce the turbidity of water by 54.21% while chitin/chitosan can reduce up to 90.37% the turbidity of water.

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