cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
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
Kota denpasar,
Bali
INDONESIA
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 5 Documents
 1 
Search results for , issue "Vol. 1, No. 2 Juli 2007" : 5 Documents clear
PENENTUAN KUANTITATIF MORFIN DALAM URIN SECARA SPEKTROFOTODENSITOMETRI N. M. Suaniti; M. A. Hitapretiwi Suryadhi
Jurnal Kimia (Journal of Chemistry) Vol. 1, No. 2 Juli 2007
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 (65.487 KB)

Abstract

Quantitative determination of morphine in urine has been done by utilizing spectrophotodensitometry.Morphine standard in methanol 5 g/mL was spotted by linomat between 4-24 L in metal sheet thin layerchromatography spectrophotodensito-metry using morphine standard of 20.40.60.80.100.120. and 140 ng.Methode. statistically and validation analysis, showed a regression line of y = -69.21 + 8.06 x with r =0.992. Detection and quantitation limits of 18.02 ng and 60.06 ng respectively were measured at maximum wavelength of (maks) 287 nm with on recovery of 90.91 percent.
ISOLASI DAN IDENTIFIKASI SENYAWA ANTIMAKAN DARI BATANG TUMBUHAN BROTOWALI (Tinospora tuberculata BEUMEE.) I M. Sukadana; Wiwik Susanah Rita; Frida R. Koreh
Jurnal Kimia (Journal of Chemistry) Vol. 1, No. 2 Juli 2007
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 (286.693 KB)

Abstract

Isolation and identification of antifeedant compounds from brotowali stem (Tinospora tuberculataBEUMEE.) was done. Brotowali dry powder of 1 kg was extracted using methanol by maceration, The methanolextract then was fractionated repeatedly by n-hexane, so that methanol and n-hexane extracts were obtained. Both ofextracts were evaporated by rotary vacuum evaporator, so concentrated methanol and n-hexane extracts wereobtained and then their antifeedant activity was tested. More active extract was separated by thin layerchromatography (TLC) then continued by column chromatography utilizes silica gel 60 as a stationary phase and thebest mobile phases of TLC. Fractions obtained were tested of their antifeedant activity. More active fraction thenwas tested its purity and identified by phytochemical test and UV-vis and infrared spectrophotometer.As much as 97.07 g of concentrated methanol extract was resulted from 1 kg brotowali dry powder.Fractionation of the methanol extract using n-hexane resulted 22.92 g of concentrated methanol and 21.71 g ofconcentrated n-hexane. n-hexane extract points out more activity as antifeedant than methanol extract. The bestmobile phase of TLC was n-hexane: chloroform (1:1 ). The unite result from the column chromatography wasobtained 3 fractions where fraction c points out antifeedant active. The purity test of fraction c was obtained 1 spotso continued by phytochemical test and UV-vis and infrared spectrophotometer. Phytochemical test andspectrophotometry analysis from active isolate (fraction c) point out that the compound included triterpenoid groupthat absorb on wavelength 288.6 nm and 310.6 nm, and be considered having functional group of O-H bonded, CO,C-H, C=O, C=C, and C-H.
ISOLASI DAN IDENTIFIKASI SENYAWA AKTIF LARVASIDA DARI BIJI MIMBA (Azadirachta indika A. Juss) TERHADAP LARVA NYAMUK DEMAM BERDARAH (Aedes aegypti) I W. Suirta; N. M Puspawati; N. K. Gumiati
Jurnal Kimia (Journal of Chemistry) Vol. 1, No. 2 Juli 2007
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 (354.573 KB)

Abstract

Isolation and identification of larvicidal active compounds towards Aedes aegypti from Mimba seed havebeen conducted. One kilogram dry powder of Mimba seed was extracted with ethanol at room temperature.Evaporation of ethanol gave 30 g of crude ethanol extract which showed activity against Aedes aegypti (LC50282.29). This extract was dissolved into methanol-water (7:3) and was then partitioned with n-hexane, chloroformand ethyl acetate respectively. The three extracts obtained i.e. n-hexane, chloroform and ethyl acetate were showedtheir activity against Aedes aegypti in which the-n-hexane extract was the most active with LC50 of 143.97.Therefore the n-hexane extract was further purified using silica gel column chromatography with chloroform:nhexane(9:1) as eluent. Three fractions was obtained i.e. F1, F2 and F3 and they were all active against Aedes aegyptiwith LC50 78.45, LC50 113.54 and LC50 58.70 respectively. It can be seen that F3 was the most active fractions butfrom TLC result, F1 showed the relatively pure compounds since it only gave one spot. Therefore F1 was furtheridentified using pyhtochemical testing, Uv-Vis, infrared and GC-MS. It was found that the larvicidal activecompounds F1 was belong to carboxylic acids groups,with l max 290.1 having functional groups such as methyl,methylene and carbonil. Identification using GC-MS indicated that the larvicidal active compounds F1 was assumedto be a combination of 7 compounds derived from carboxylic acids including hexa-decanoic acid, etil-hexadecanoate,oleic acid, etyl-oleate ester, octadecanoic acid, etyl-octadecanoate and dioctyl-hexadioate.
CEMARAN PESTISIDA KLOR-ORGANIK DALAM AIR DANAU BUYAN BULELENG BALI I. B. Putra Manuaba
Jurnal Kimia (Journal of Chemistry) Vol. 1, No. 2 Juli 2007
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 (92.634 KB)

Abstract

The use of pesticide around the Lake Buyan is inevitable. This will introduce pollutant to either thesoil or lake water. In this research, organochlorine pesticide residual contamination in water was investigated. LakeBuyan is used as the investigation model, since there were a lot of pressure to the lake as a consequence of increasinghuman activities such as tourism, hotel and restaurant, and farming.This is an expost facto study with Analytical Cross Sectional Study design, within two step activities, i.e.field study in order to gain sampling zone and obtaining sample needed. Followed by laboratory works in order toobtain pesticide residual contamination on water. Sample preparation for this purposed was carried out following astandard method. Gas Chromathographi was employed in order to gain the pesticide contaminant.Positive organochlorine pesticide contaminant, i.e. DDT and chlorotalonile were observed from 55sampling point of water taken from five sampling zones. DDT in the water was 5.02 ppb which is still bellow themaximum level of 42 ppb. Chlorotalonile in water was 1.99 ppb. There is no threshold value of these pesticideresidues on the Government regulation, however, this contamination is still bellow the RfD which is 15 ppb.
ISOLASI DAN IDENTIFIKASI SENYAWA TOKSIK PADA SPONS DARI PERAIRAN GILI SULAT-LOMBOK I M. Dira Swantara; Agus Supriyono; Mila Trinoviani
Jurnal Kimia (Journal of Chemistry) Vol. 1, No. 2 Juli 2007
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 (1418.494 KB)

Abstract

The isolation and identification of toxic compound on sponge from BPPT collection sub P3-TFM derivedfrom Gili Sulat, Lombok waters has been conducted. The extraction applied was maceration method, which wastotally conducted using three kinds of solvents namely, methanol, dichloromethane, and n-hexane. The total extractobtained was then partitioned into liquid using ethyl acetate and n-butane respectively. The most toxic extraction wasseparated by chromatography column with sephadex LH-20 as the stationary phase and methanol as the mobilephase. Identification of the active isolate was conducted by gas chromatography - mass spectroscopy with the aim ofWiley 275.L. database.Toxin test to sponge of BPPT collection sub P3-TFM showed that SL2 sponge was proved to be the mosttoxic one. The most toxic fraction of SL2 sponge at LC50 at 100 ppm was assumed to be the combination of 7compounds, namely benzene acetatic acid (8.9%), dioktil hexadioate (4.5%), bis (2etilheksil) 1.2-benzeneboksilat(53.1%), 2, 6, 10, 15, 19, 23 hexamethyl 2, 6, 10, 14, 18, 22-tetracosahexene, (17.1%), nonacosane (7.8%),cholesterol (3.8%) and eicosane (4.8%).

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2007 2007


Reset
Filter By Issues
All Issue Vol. 18, No.2, Juli 2024 Vol. 18, No.1, Januari 2024 Vol. 17, No.2, Juli 2023 Vol. 17, No.1, Januari 2023 Vol. 16, No.2, Juli 2022 Vol. 16, No.1, Januari 2022 Vol. 15, No.2, Juli 2021 Vol. 15, No.1, Januari 2021 Vol. 14, No. 2 Juli 2020 Vol.14 No.1 Januari 2020 Vol.13 No.2 Juli 2019 Vol.13 No.1 Januari 2019 Vol.12 No.2 Juli 2018 Vol. 12 No.1 Januari 2018 Vol. 11. No.2 Juli 2017 Vol. 11. No. 1 Januari 2017 Vol. 10, No. 2 Juli 2016 Vol. 10, No. 1 Januari 2016 Vol. 9, No. 2 Juli 2015 Vol. 9, no. 1 Januari 2015 Vol. 8, No. 2 Juli 2014 Vol. 8, No. 1 Januari 2014 Vol. 7, No. 2 Juli 2013 Vol. 7, No. 1 Januari 2013 Vol. 6, No. 2 Juli 2012 Vol. 6, No. 1 Januari 2012 Vol. 5, No. 2 Juli 2011 Vol. 5, No. 1 Januari 2011 Vol. 4, No. 2 Juli 2010 Vol. 4, No. 1 Januari 2010 Vol. 3, No. 2 Juli 2009 Vol. 3, No. 1 Januari 2009 Vol. 2, No. 2 Juli 2008 Vol. 2, No. 1 Januari 2008 Vol. 1, No. 2 Juli 2007 Vol. 1, No. 1 Januari 2007 More Issue