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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 518 Documents
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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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (129.634 KB)

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 %.
AKTIVITAS ANTIINFLAMASI EKSTRAK ETER KULIT BATANG TENGGULUN (Protium javanicum Burm) TERHADAP EDEMA PADA TIKUS WISTAR YANG DIINDUKSI DENGAN KARAGENAN A. A. Tia Santika Dewi; Ni Made Puspawati; Putu Suarya
Jurnal Kimia (Journal of Chemistry) Vol. 9, no. 1 Januari 2015
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (99.839 KB) | DOI: 10.24843/JCHEM.2015.v09.i01.p03

Abstract

Stem bark of Tenggulun (Protium javanicum, Burm) has been used traditionally by Balinese people as anti-inflammatory agents. This research aimed to analyze phytochemical contents and to evaluate anti-inflammatory activity of stem bark ether extract of Tenggulun. Phytochemical study was done qualitatively using phytochemical reagents. Anti-inflammatory activity was evaluated on edema rats induced by carrageenan with given extract at doses of 125, 250, and 500 mg/kg b.w. Diclophenac sodium was used as the positive control. Phytochemical study revealed that the stem bark ether extracts consisted of alkaloids, steroids, terpenoids, and phenolic compounds.  Anti-inflammatory activity test  results showed at a dose of 125 mg/kg b.w, the extract only inhibit inflammation by 34.54%, while a dose of 250 mg/kg b.w gave inhibition of inflammation by 94.34%, and a dose of 500 mg/kg b.w can inhibit inflammation by 96.11% during 360 minutes observation. Probit analysis gave ED50 value of 103.252 mg/kg B.W.
KARAKTERISASI ADSORBEN KOMPOSIT ALUMINIUM OKSIDA PADA LEMPUNG TERAKTIVASI ASAM P. Suarya
Jurnal Kimia (Journal of Chemistry) Vol. 6, No. 1 Januari 2012
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (230.257 KB)

Abstract

Composite of alluminium oxide in clay has been prepared. The materials were prepared as follow: first, clay was activated with 1.2 M sulphuric acid, then intercalated using polyoxycation of alluminium, and finally calcinated to form composite of alluminium oxide (Al2O3). X-ray diffraction (XRD) was employed to characterize basal spacing (d001). Acid-base titration was used for determining the surface acidity, and spectrophotometer UV-Vis for determining the specific surface area.The results show that activation of clay with sulphuric acid and interchalation with polyoxycation of alluminium increase the surface acidity of aluminium oxide composite in clay the namely. The specific surface area of CC0-0, CCa-0, CCa-1, CCa-2 and Cca-3 were 27.0307 m2/g; 28.2351 m2/g; 29.0040 m2/g; 29.2074 m2/g; and 29.1513 m2/g respectively. The X-ray results indicated that adsorbent was composed by montmorillonite, kaolinite, chlorite, feldspar, and calsite.
FITOEKSTRAKSI Cu, Cr DAN Pb LIMBAH TEKSTIL DENGAN TUMBUHAN KIAMBANG (Pistia stratiotes L.) Ni Putu Ayu Dwijayanti,; Iryanti Eka Suprihatin; I Ketut Gede Dharma Putra
Jurnal Kimia (Journal of Chemistry) Vol. 10, No. 2 Juli 2016
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (314.553 KB) | DOI: 10.24843/JCHEM.2016.v10.i02.p15

Abstract

Penelitian tentang fitoekstraksi Cu, Cr dan Pb limbah tekstil dengan tumbuhan kiambang (Pistia stratiotes L.) telah dilakukan untuk mengetahui penurunan konsentrasi logam Cu, Cr dan Pb dalam limbah tekstil. Limbah tekstil yang ditanami dengan tumbuhan kiambang (Pistia stratiotes L.) disampling setiap 6, 12, 24 dan 48 jam lalu dianalisis menggunakan AAS (Shimadsu, AA-7000) dengan metode kurva kalibrasi untuk mengetahui konsentrasi Cu, Cr dan Pb yang tersisa. Pada waktu kontak 6, 12, 24 dan 48 jam, konsentrasi Cu  berturut-turut sebesar 0,5089±0,0158; 0,2212±0,0458; 0,0691±0,0255 dan 0 mg/L dari konsentrasi awal sebesar 2,5574 mg/L, sedangkan konsentrasi Cr rata-rata berturut-turut sebesar 2,1954±0,0100; 2,3371±0,0529; 2,2988±0,0400 dan 2,2222±0,0173 mg/L dari konsentrasi awal sebesar 2,8966 mg/L. Sementara itu konsentrasi Pb rata-rata berturut-turut sebesar 2,0767±0,0447; 0,7346±0,0234; 1,1724±0,1125 dan 0,5000±0,0122  mg/L dari awal sebesar 2,9868 mg/L. Dari hasil tersebut, dapat disimpulkan bahwa tumbuhan kiambang (Pistia stratiotes L.)  mampu menurunkan konsentrasi Cu dan Pb hingga berada di bawah baku mutu dalam waktu 48 jam sedangkan konsentrasi Cr  masih berada di atas baku mutu yang ditetapkan Peraturan Menteri Negara Lingkungan Hidup No. 3/MENLH/01/2010.
SUHU DAN WAKTU OPTIMUM PROSES EKSTRAKSI ANTOSIANIN DALAM UBI JALAR UNGU (Ipomoea batatas L.) DENGAN ?-L-ARABINOFURANOSIDASE I N. Wirajana; N. M. T. Juliasari; A.A. I.A.M. Laksmiwati; N. W. Bogoriani
Jurnal Kimia (Journal of Chemistry) Vol.13 No.1 Januari 2019
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (476.09 KB) | DOI: 10.24843/JCHEM.2019.v13.i01.p14

Abstract

Enzyme-assisted extraction (EAE) method is one of the most environmentally friendly methods of enzyme application in the extraction of bioactive compounds. The purpose of this study was to determine the optimum temperature and time required in the extraction of anthocyanin compounds from purple sweet potato (Ipomoea batatas L.) with and without ?-L-arabinofuranosidase (AbfA) - assisted. The AbfA enzyme was obtained from Saccharomyces cerevisiae recombinant strain BJ1824 contain pYHMI-Af plasmid. The optimum temperature and time in the extraction of anthocyanin compound with and without ?-L-arabinofuranosidase from purple sweet potato were performed on the 40, 50, 60 and 700C; and 150, 180, 210 minutes. The extraction was done by ethanol solvent of 60,32% (v/v) acidified with citric acid of 2,39% (b/v). The measurement of anthocyanin levels using UV-Vis Spectrophotometer at 527 nm and 700 nm wavelengths at pH 1,0 and 4,5. The optimum condition of non-enzyme-assisted extraction was at 600C for 210 minutes, with the anthocyanin levels of 26,3842 mg/L; while with the AbfA enzyme-assisted at 500C for 180 minutes, with the anthocyanin levels of 28,2056 mg/L. The extraction with enzyme-assisted resulted the anthocyanin levels of 6,90% higher than without the using of enzyme.
KANDUNGAN LOGAM Pb DAN Cu DALAM BUAH STROBERI SERTA SPESIASI DAN BIOAVAILABILITASNYA DALAM TANAH TEMPAT TUMBUH STROBERI DI DAERAH BEDUGUL Putu Desitha Pratiti Kameswari Wisnawa; I Made Siaka; Anak Agung Bawa Putra
Jurnal Kimia (Journal of Chemistry) Vol. 10, No. 1 Januari 2016
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (74.458 KB) | DOI: 10.24843/JCHEM.2016.v10.i01.p04

Abstract

A study about speciation and bioavailability of heavy metals Pb and Cu in strawberry fruits and in the strawberry soils in Bedugul areas has been carried out. This study was aimed to determine the concentrations of Pb and Cu in the fruits and the soils, as well as speciation and bioavailabilities of both metals in the soils. Wet digestion method with reverse aqua regia was applied for determining the total metals, while sequential extraction method was performed to fractionate the metals bound to the various phases of the soils. The measurement of both metals was carried out by the use of AAS (Shimadzu, AA-7000). The total Pb and Cu contents in the fruits were 2.5903-9.2019 and 0.8744-1.1567 mg/kg, respectively while in the soils were 20,7912 -39.0144 and 39.3154-42,6620 mg/kg, respectively.  In the speciation of both metals in soils, it was found that Pb and Cu associated with EFLE phases were 3.4944 and 1.2454 mg/kg, respectively, while those bound to Fe/Mn Oxides phases were 5.6652 and 3.1860 mg/kg, respectively. The Pb and Cu bound to organic/sulfide phases were 7.9553 and 5.5913 mg/kg, respectively and those bound to resistant phases were 13.4471 and 31.0796 mg/kg, respectively. Bioavailabilities of Pb and Cu in the soils were dominated by non bioavailable fractions, i.e. 43.69 and 76.11%, respectively, followed by the fractions of potentially bioavailable, and the lowest fractions were found as readily bioavailable.
OPTIMASI METODE PURIFIKASI EKSTRAK DAUN SIRIH HIJAU (Piper betle Linn) YANG MEMILIKI AKTIVITAS ANTIBAKTERI TERHADAP BAKTERI Propionibacterium Acnes W. A. Wijaya; N. L. P. V. Paramita; N. M. P. Susanti
Jurnal Kimia (Journal of Chemistry) Vol. 12 No.1 Januari 2018
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (151.992 KB) | DOI: 10.24843/JCHEM.2018.v12.i01.p07

Abstract

Propionibacterium acnes merupakan bakteri utama penyebab jerawat, dimana dilaporkan dalam suatu penelitian bahwa persentase ditemukannya bakteri P. acnes pada lesi jerawat sebesar 78,8%. Daun sirih hijau telah banyak dilaporkan memiliki aktivitas sebagai antibakteri. Kemampuan antibakteri daun sirih hijau disebabkan karena adanya senyawa golongan fenol yang terdiri dari kavikol, hydroxychavicol, chavibetol, estragol, eugenol, carvacrol dan golongan senyawa seskuiterpen. Penelitian ini bertujuan untuk mengetahui metode optimum yang menghasilkan aktivitas antibakteri terhadap bakteri P. acnes dari enam fraksi yang diperoleh. Metode purifikasi yang digunakan untuk mendapatkan ke-6 fraksi tersebut adalah LLE dengan penggunaan pelarut polar etanol-air yang tidak bercampur dengan pelarut heksan, kloroform dan dietileter. Ke-6 fraksi uji tersebut selanjutnya diuji aktivitas antibakterinya dengan metode difusi disk dan dilanjutkan dengan metode tambahan yaitu KLT bioautografi kontak. Analisis data yang dilakukan secara deskriptif terhadap nilai diameter zona hambat dengan mengkategorikannya berdasarkan CLSI dan terhadap hasil skrining fitokimia. Dari hasil penelitian ini diperoleh hanya dua fraksi yaitu fraksi n-heksan dan fraksi dietileter yang mampu menghambat pertumbuhan bakteri P. acnes dengan nilai diameter zona hambat sebesar 8 mm dan 9 mm. Metode purifikasi ekstrak daun sirih hijau yang merupakan gabungan metode maserasi dan LLE yang dilakukan belum optimal karena dilihat dari 6 fraksi yaitu fraksi etanol-air (FEA I), etanol-air (FEA II), etanol-air (FEA III), kloroform, dietil eter dan fraksi n- belum mampu menghambat pertumbuhan bakteri P. acnes dimana ke-6 fraksi tersebut termasuk dalam kategori resistant.
AKTIVITAS ANTIBAKTERI SENYAWA GOLONGAN TRITERPENOID DARI BIJI PEPAYA (Carica papaya L.) I M. Sukadana; Sri Rahayu Santi; N. K. Juliarti
Jurnal Kimia (Journal of Chemistry) Vol. 2, No. 1 Januari 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

Isolation, identification, and antibacterial activity examination have been conducted for triterpenoidscompounds of carica papaya L. Maseration of 500 g pawpaw seed powder in n-hexane gave 21.66 g extract whichreacts with Liebermann-Buched reagent resulting in colour change (yellow to purple). Column chromatographyseparation of the extract resulted in 0.05 g yellow isolate (F3) which contains aldehyde triterpenoids. Infrared spectraindicated aliphatic –C-H stretching, -CH2 bending, -CH3 bending, and C=O. Ultra violet – visible spectra showedabsorption at 228.5 nm and proad peak at 287.7 nm. Antibacterial axamination showed that 1000 ppm at the isolateinhibits the growth of Escherichia coli and Staphylococcus auerus.
PEMANFAATAN TEH KOMBUCHA SEBAGAI OBAT HIPERURISEMIA MELALUI PENGHAMBATAN AKTIFITAS XANTIN OKSIDASE PADA Rattus norvegicus Dewa Ayu Windu Manik Anandagiri; I. B. Putra Manuaba; Ni G. A. M. Dwi Adhi Suastuti
Jurnal Kimia (Journal of Chemistry) Vol. 8, No. 2 Juli 2014
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (88.206 KB) | DOI: 10.24843/JCHEM.2014.v08.i02.p12

Abstract

The formation of high levels of uric acid and problems of its excretion from the body can lead to hyperuricemia. This study serves to examine the kombucha tea as a hyperuricemia drug activity through the inhibition of the enzyme xanthine oxidase. Kombucha tea was used with three different variations of fermentation namely: tea A (4 days), tea B (8 days), tea C (12 days), and two variations of the dose, i.e. 10 mL/kg BW and 40 mL/kg BW. This study uses a “posttest only control group” design. A total of 27 Wistar rats (Rattus norvegicus) are grouped into 9 groups, K (negative control), H (control hyperuricemia), A (control allopurinol), P1 (tea A dose of 10 mL/kg BW), P2 (tea A dose  40 mL /kg BW), P3 (tea B dose 10 mL/kg BW), P4 (tea B dose 40mL/kg BW), P5 (tea C dose 10 mL/kg BW), P6 (tea C dose 40 mL/kg BW). The rats were given high feed purine for research, namely chicken liver juice and melinjo so that they contracted the hyperuricemia condition. The high purine feeds were administered on all groups of rats except the negative control group. Experiment was undertaken to compare the effectiveness of allopurinol with kombucha tea. This experiment was done for nine days. On the last day, an analysis of the levels of uric acid and xanthine oxidase activity was undertaken and the data was analyzed using ANOVA. The conclusion was that the biggest decline in drug for the treatment of hyperuricemia was kombucha tea B with the dose of 40 mL/kg BW.
IDENTIFIKASI SENYAWA ANTIRADIKAL BEBAS PADA RUMPUT LAUT Sargassum ringgoldianum I M. Dira Swantara; A. A. Bawa Putra; I P. Surya Udayana
Jurnal Kimia (Journal of Chemistry) Vol. 6, No. 1 Januari 2012
Publisher : Program Studi Kimia, FMIPA, Universitas Udayana (Program of Study in Chemistry, Faculty of Mathematics and Natural Sciences, Udayana University), Bali, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (152.922 KB)

Abstract

The identification of antiradical compounds from Sargassum ringgoldianum seaweed has been conducted. Its metabolite extraction was carried out by maceration using ethanol and acetit acid mixture with ratio 9:1. It produced 7,02 gram crude extract from 230 grams of sample pollen. This crude extract has free-radical reduction activity of 66,50% at the fifth minute and 78,77% at the sixtieth minute. Separation and purification were carried out by partition, thin layer chromatography, and column chromatography. Partition was accomplished using petroleum ether, chloroform, ethyl acetate, and also water. Petroleum ether ectract had the highest free-radical reduction percentage, of 76,21%, which was obtained on the fifth minute, and 91,16% on the sixtieth minute. The petroleum ether extract was further separated with column chromatography, using stationary phase of silica gel 60 and mobile phase of a mixture of petroleum ether : acetone (7:3) and produced five fractions (FA, FB, FC, FD, dan FE). The most active fraction with antiradical activity was fraction B with percentage of free-radical reduction of 62,77% on the fifth minute and 92,19% on the sixtieth minute. This activity equals 93,06% of the antiradical activity of vitamin E. Fraction B was identified to consist of six compounds : ethyl myristate; dibutyl phthalate; ethyl palmitate; methyl isostearate; dioctyl phthalate; and 3?-bromo cholest-5-ene.

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