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Ni Putu Diantariani
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Program Studi Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Udayana Kampus Bukit Jimbaran, Jimbaran, Bali, Indonesia
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Jurnal Kimia (Journal of Chemistry)
Published by Universitas Udayana
ISSN : 19079850     EISSN : 25992740     DOI : 10.24843/JCHEM
Core Subject : Science,
Chemistry
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.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 13 Documents
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Search results for , issue "Vol. 4, No. 1 Januari 2010" : 13 Documents clear
AKTIVITAS ANTIRADIKAL BEBAS SERTA KADAR BETA KAROTEN PADA MADU RANDU (Ceiba pentandra) DAN MADU KELENGKENG (Nephelium longata L.) I M. Oka Adi Parwata; K. Ratnayani; Ana Listya
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

It has been done the determination of free antiradical activity and beta caroten concentration on randu honey(Ceiba pentandra) and kelengkeng honey (Nephelium longata L.). The free antiradical activity determined bydiphenyl pykril hydrazil (DPPH) method according to sphectrophotometry UV-Vis, before that the honey was dilutedwith methanol and then the absorbance was measured on 497nm, 517 nm, and 537 nm. The beta karotenconcentration determination was done TLC-Sphetrophotodensitometrically by using beta caroten standard; the honeywhich was resulted by methanol maseration was partiated with acetone p.a. The next step was done by TLC withethyl acetate as an eluent : chloroform (3:7) and the peak of the analyt was read on TLC scanner 3.The result showed that the free antiradical activity on kelengkeng honey was greater than randu honey.Whereas the beta caroten concentration on kelengkeng honey was fewer than beta caroten concentration randuhoney. The activity of free antiradical and beta caroten concentration was 82,10 % and 1,9687 mg/100 g respectively,whereas for randu honey was 69,37 % and 3,6327 mg/100 g respectively.
ISOLASI, IDENTIFIKASI, DAN UJI AKTIVITAS ANTIBAKTERI SENYAWA GOLONGAN TRITERPENOID PADA RIMPANG TEMU PUTIH (Curcuma zedoaria (Berg.) Roscoe) Wiwik Susanah Rita
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

Isolation, identification, and antibacterial activity examination of triterpenoid compounds from rhizome ofCurcuma zedoaria (Berg.) Roscoe have been conducted. Maseration of 600 g dry powder of those rhizome using nhexaneand ethanol respectively yielded 9,79 g of n-hexane extract and 23,45 g of ethanol extract. The ethanolextract containing triterpenoids was dissolved into ethanol-water (7:3) mixture. The mixture was evaporated toremove the ethanol and then partitioned by chloroform. Hence, two extract were produced i.e., chloroform and waterextract. The n-hexane and chloroform extracts obtained contained triterpenoids based on fitochemical test ofLieberman-Burchard. Antibacterial test showed that only chloroform extract was active with inhibition zone of 2 mmfor Staphylococcus aureus.Compound separation of the chloroform extract using column chromatography produced 0,44 g brownisolate which contained triterpenoids (fraction F1). The isolate inhibited the growth of Staphylococcus aureus andEscherichia coli with weak inhibition zone at 500 ppm and 1000 ppm. Infrared spectra indicated that the isolate wasa carboxylic acids triterpenoids, with characteristic functional groups of –OH bonded, –CH, C=O of carboxylic acids,–C=C, –CH2, –CH3, and C–O alcohol. The ultraviolet-visible spectra showed maximum absorption at 242 nm and280 nm.
PENINGKATAN POTENSI BATU PADAS LADGESTONE SEBAGAI ADSORBEN ION LOGAM BERAT Cr(III) DALAM AIR MELALUI AKTIVASI ASAM DAN BASA N. P. Diantariani
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 research with aim to increase potency of natural batu padas of Ladgestone type through activation usedby acid (H2SO4) and basa (NaOH) various concentrations (2.0; 4.0; and 6.0N) to adsorption ability of heavy metalion of Cr(III) in water have been done. Acid and base activated batu padas was characterizated of specific surfacearea with blue methylen method, whereas surface acidity determined by acid-base titration. Whereas, amount ofCr(III) which can of maximum adsorpted every weight of adsorben or adsorption capacity determined by atomicabsorption spectrophotometer (AAS). The result measurement of activated batu padas compared by batu padaswithout activation (control).Result of research indicate that batu padas after activated by NaOH and of H2SO4 yield surface acidity(active sites) and realtive higher specific surface area compared with without activation (control). Maximumability(capacity) adsorption to Cr(III) was just increasing for NaOH activated batu padas. Highest Capacitiesobtained by NaOH activated batu padas at concentration 4.0N was 2.0265 mg/g.
EFEKTIVITAS PENURUNAN KADAR DODESIL BENZEN SULFONAT (DBS) DARI LIMBAH DETERJEN YANG DIOLAH DENGAN LUMPUR AKTIF Ni G. A. M. Dwi Adhi Suastuti
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

This research aims to find out the decrease effectivity of dodecil benzene suphonate (DBS) concentrationfrom detergent waste treated using activated sludge. This research was carried out in two steps : the first step wasseeding process or preparation of the activated sludge. This was carried out on plastic container of 2 L. About 3 gsediment taken from Tukad Mati, 1 g NPK were mixed in a plastic container. The volume was made 1 L by addingaquadest, the mixture was aerated for 1 week. The second step was treatment of detergent waste which was carriedout using 2 plastic container of 5 L each. About 2 L detergent waste and 1 L activated sludge solution were mixed inthe plastic container. Mean while, 3 L detergent waste as a control were palced in the other plastic container. Bothcontainer were aerated for observation for decrease DBS concentration was carried out during 0, 3, 5, 7, 10 and 15days. DBS concentration was analyzed using Methylen blue method.The research result indicated that generally, there were decrease of BDS concentration both in control andtreated samples. The lowest DBS concentration was observed on day 15 both on control and treated samples withvalue, of 46.726 and 0.381 mg/L respectively. The decrease effectivity were 8.18% for control and 99,25% fortreated samples. From this research, it can be seen that treatment of waste using activated sludge was effective todecrease DBS concentration in detergent containing waste.
UJI AKTIVITAS PENURUNAN KOLESTEROL PRODUK MADU HERBAL YANG BEREDAR DI PASARAN PADA TIKUS PUTIH DIET LEMAK TINGGI Ni Putu Ariantari; Sagung Chandra Yowani; Dewa Ayu Swastini
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 research aims to investigate hypocholesterolemic activity of two marketed herbal honey products forhypocholesterolemia, mentioned as product A and B on Wistar albino rats with hypercholesterolemic diet.Hypocholesterolemic activity test was conducted with Enzymatic Photometric Test CHOD-PAP (CholesterolOxidase Phenol Aminoantipyrin) method. The result revealed that product A administered orally to Wistar albino ratswith hypercholesterolemic diet, at 0.15 mL/200g BW dose once daily, did not show hypocholesterolemic activity. Onthe other hand, product B at 0.5 mL/200g BW dose showed hypocholesterolemic activity similar to simvastatin.
OPTIMASI DEASETILASI KHITIN DARI KULIT UDANG DAN CANGKANG KEPITING LIMBAH RESTORAN SEAFOOD MENJADI KHITOSAN MELALUI VARIASI KONSENTRASI NaOH N. M. Puspawati; I N. Simpen
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

Chitin resulted from treatment of shrimp and crab shells wasted of seafood restaurant, can be transformedinto chitosan through deacetylation process using concentrated NaOH. This research aims to investigate the optimumcondition of the deacetylation process to achieve a high yield and deacetylation degree of chitosan by varying theconcentration of NaOH while temperature and length of reaction are made constant at 120oC for 4 hours. Theconcentration of NaOH used in this research was 50; 55; and 60%, respectively. All chitosan obtained were purifiedand characterized by FTIR. The deacetylation degree of chitosan was calculated based on FTIR spectra data.The result found, the optimum condition for deacetylation of chitin from shrimp shells at 120oC for 4hours, was achieved using NaOH 60%, giving a high yield of 54.90% and deacetylation degree of 88.04%.. Usingthe same condition as for deacetylation chitin from shrimp, chitosan obtained from crab shells gave a better yieldwhich was 62.76 %, and the deacetylation degree of 88.53%. Both chitosans obtained from shrimp and crab shellssolubled in a 2% acetic acid solution.
INTERKALASI TETRAETIL ORTOSILIKAT (TEOS) PADA LEMPUNG TERAKTIFASI ASAM SULFAT DAN PEMANFAATANNYA SEBAGAI ADSORBEN WARNA LIMBAH GARMEN P. Suarya; A. A. Bawa Putra; Devi Wisudawan
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

Interchalation of Tetraethyl orthosilicate (TEOS) with acid activated clay has been studied. As forcharacterization of the modified clay. Acid-base titration methode was used to determine the surface acidity.Methylen blue method was used to determine the surface area while spectrophotometer UV-Vis was used todetermine the amount of dye adsorbted by the modified clay.The results showed that activation of clay with sulphuric acid and interchalat ion with TEOS increased thesurface acidity of the clay. The value of surface acidity of S0-0(without activation); Sa-0(interchalated with TEOS 0%);Sa-5 (interchalated with TEOS 5%); Sa-10(interchalated with TEOS 10%); Sa-15 (interchalated with TEOS 15%) were0.5064; 0.8733; 0.8486; 1.0005; and 0.8926 mmol/gadsorbent respectively. The specific surface area of S0-0; Sa-0; Sa-5;Sa-10; Sa-15 were27.2391 m2/g; 28.4019 m2/g; 28.2767 m2/g; 29.2220; m2/g dan 29.1621 m2/g, respectively. Furthermore, it was shown that, acid actived clay interchalated with 10% TEOS was the best adsorbent which adsorbed83,64% of the dye indicated by the change of the colour from dark yellow to light yellow.
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.
SENYAWA AKTIF ANTIMAKANDARI UMBI GADUNG (Dioscorea hispida Dennst) Sri Rahayu Santi
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

Isolation and identification of active antifeedant compounds from gadung tuber (Dioscorea hispida Dennst)has been carried out. As much as 12.03 g of concentrated methanol extract was resulted from 5.0 kg dry gadung tuberthat was macerated using methanol. Further, this extract was partitioned with n-hexane to obtain 2 concentratedextracts in n-hexane and methanol. The result of antifeedant test showed that the methanol extract was more activethan the n-hexane extract.Separations of the methanol extract using column chromatography (stationary phase : silica gel 60, mobilephase : methanol-chloroform 6:5) resulted four fractions. The most active fraction, FA , showed 2 spots on the TLC,so it was separated using preparative TLC which resulted in 2 fractions (FA.1 and FA.2). The antifeedant activity ofFA.1 fraction was higher than FA.2 fraction and it gave only 1 spot on the TLCThe result of identification using phytochemical test and spectrophotometer analysis suggested that FA.1fraction was alkaloid compound whose maximum wave length was 277.1 nm and it contained N-H (3425.3 cm-1), CHaliphatic (2927.7 and 2854.5 cm-1), C=O (1735.8 cm-1), C-N (1110.9 cm-1) and N-C=O (621.9 cm-1).
ANALISIS SENYAWA ANTIRADIKAL BEBAS PADA MINYAK DAGING BIJI KEPUH (Stercuria foetida L) I G. A. Gede Bawa
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

Analysis of anti freeradical compounds from Kepuh (Sterculia foetida L.) seed flesh oil has beenconducted. The isolation of kepuh seed flesh was carried out by maseration using n-hexane and ethanol. Antifreeradical test was carried out by spectroscopy method using DPPH as free radical. The analysis of the compoundsextracted accomplised was used Gas Column Mass Spectrometry (GC-MS).900 gram Kepuh seed yielded 250 mL oil n-hexane extract and 59,5 mL from ethanol extract. The resultof the anti freeradical test showed that the oil from n-hexane extract was not potencial as a anti freeradical agentwhile the oil from ethanol extract has a potency as a anti freeradical agent with damping percentage of 55,07%during 5 minutes and 85,05% during 60 minutes.The analysis using GC-MS, showed that ethanol extract oil from the flesh of kepuh seed contained 8 majorcomponent with relative concentration of methyl palmitate 3956,783 ppm (235,428 mg); palmitic acid 1837,414ppm (109,326 mg); ethyl palmitate 39288,783 ppm (2337,683 mg); (14Z,16Z)-ethyl octadeca-14,16-dienoate17062,660 ppm (1015,228 mg); (15Z,17Z)-methyl nonadeca-15,17-dienoate 19988,563 ppm (1189,319 mg); ethylstearate 4365,666 ppm (259,757 mg); (1Z,4Z)-1-methoxy-9,9,10,14-tetramethyl pentadeca-1,4-diena 22421,631 ppm(1334,087 mg); and (1Z,12Z,16Z)-1-ethoxy-6 methoxy octadeca 1,12,16-triena 78001,041 ppm (4672,262 mg).

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