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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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PENGARUH SISTEM REKLAMASI AIR LIMBAH TERHADAP KONSENTRASI BOD DAN COD EFFLUENT INSTALASI PENGOLAHAN AIR LIMBAH SUWUNG DENPASAR I D. G. Putra Prabawa; K. G. Dharma Putra; Ni Made Suaniti
Jurnal Kimia (Journal of Chemistry) Vol. 7, No. 2 Juli 2013
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 (266.479 KB) | DOI: 10.24843/JCHEM.2013.v07.i02.p13

Abstract

The application of water reclamation system has been researched for the concentration of Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) in the effluent waste water treatment in Suwung Denpasar. The aims of the research were to determine the effect of each stage of water reclamation system on the BOD5 and COD of the effluent, the effectiveness of the water reclamation system and the quality of the reclaimed water. The results showed that each stage of water reclamation system can decrease the concentrations of BOD5 and COD from waste water treated with different percentage of  reduction. The percentages of the COD reduction by first stage (biological filtration systems) were 41.17% and 31.23% respectively BOD5 and COD. The second stage (pre-ozonation system) were 83.13% and 77.68% respectively. Moreover, the third stage (coagulation and membrane systems) reduced 29.25% and 8.02% respectively. The overall rate of effectivenes from the initial to final stages of waste water reclamation were 92,98% for BOD5 and 85,88% for COD.
PENGARUH ETANOL, ETIL ASETAT DAN EKSTRAK ETANOL TERPURIFIKASI TERHADAP HASIL EVALUASI SIFAT FISIK SEDIAAN PATCH MUKOADHESIF EKSTRAK DAUN SIRIH (PIPER BETLE L.). P. S. Yustiantara; A. A. G. R. Yadnya-Putra; A. F. Febriana-Putra; A. A. P. Febriyana
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 (220.501 KB) | DOI: 10.24843/JCHEM.2018.v12.i01.p08

Abstract

Patch dapat mengandung lapisan polimer mukoadhesif yang berikatan dengan mukosa mulut, atau gingiva. Tanaman sirih hijau (Piper betle L.) secara empiris telah digunakan pada pengobatan gingivitis. Penelitian ini bertujuan untuk mengetahui sifat fisik dari patch yang mengandung ekstrak etanol, etil asetat, dan ekstrak etanol terpurifikasi daun sirih hijau, dilihat dari bobot matriks patch, ketebalan matriks patch, susut pengeringan matriks patch, dan ketahanan lipatan matriks patch. Ekstraksi daun sirih menggunakan metode maserasi. Patch dibuat dengan sistem matriks dengan ekstrak daun sirih dengan bahan tambahan antara lain; HPMC, PEG 400, dan mentol. Hasil uji fisik pada patch memperlihatkan bobot matrik patch ekstrak etanol (2,153 ± 0,077g), ekstrak etil asetat (1,906 ± 0,040g) dan ekstrak terpurifikasi sebesar (1,593 ± 0,075g). Tebal matrik patch ekstrak etanol (0,61 ± 0,613 mm ), ekstrak etil asetat (0,57 ± 0,576 mm ) dan ekstrak terpurifikasi sebesar (0,55 ± 0,550 mm), susut pengeringan matriks patch mengandung ekstrak etanol (4,20 ± 4,206 %), ekstrak etil asetat (3,97 ± 3,973 %) dan ekstrak terpurifikasi sebesar (3,67 ± 3,673%) dan ketahanan lipatan matriks patch pada ekstrak etanol sebanyak (491 ± 40,27 lipatan), pada ekstrak etil asetat (320 ± 16,65 lipatan) dan pada ekstrak purifikasi sebesar (532 ± 40,55 lipatan).
PERBANDINGAN MASSA OPTIMUM CAMPURAN PEWARNA ALAMI PADA KAYU JENIS AKASIA (Acacia leucopholea) N. W. Bogoriani; A. A. Bawa Putra
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (63.375 KB)

Abstract

Wood is one of several materials that is very useful for man. Now adays wood with low quality tends to beused more. The high demand causes good quality wood getting harder to find. To overcome this problem, low qualitywood like acacia was dyed using a mixture of natural dye. The dye was prepared from urcaria gambir-piper betleLinn leaves, areca catechw seed, and 0.5 % w/v of CaCO3 in water. The physical and chemical properties of thedyed wood was tested using aluminium sulphate solution and detergent solution.The optimum mass for the dye was 5.3 uncaria : 3.0 piper; 3.0 areca. After 30 minutes soaking in themixture, reddish brown coolour was produced, with maximum adsorption of 0.23 g in wood surface that showeddurability of the dye highest from dye appearance and mixture mass that be lost.
UJI PEMANFAATAN DAUN SIRSAK (Annona muricata L.) DALAM MENGHAMBAT STRES OKSIDATIF PADA TIKUS WISTAR HIPERKOLESTEROLEMIA MELALUI PENINGKATAN AKTIVITAS SUPEROXIDE DISMUTASE Sri Wahjuni; Sri Rahayu Santi; Ni Nyoman Astuti Wulandari
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 (36.987 KB) | DOI: 10.24843/JCHEM.2015.v09.i01.p11

Abstract

Oxidative stress is an imbalance condition between free radicals in the body with the anti-oxidant. Superoxide dismutase (SOD) is one of the endogenous anti-oxidant that can neutralize the excess of Reactive Oxygen Species (ROS). The excess of ROS that caused by stres oksidative can also be neutralized with the help of exogenous anti-oxidants. A soursop plant (Annona muricata L.) has anti-oxidant activity, especially in the leaves. This study aims to determine the activity of the leaves of the soursop (Annona muricata L.) in inhibiting the oxidative stress that conducted on the object hypercholesterolemic rats wistar through increasing SOD activity using variations of the extract dose of 50 mg/kg BW; 100 mg/kg BW and 150 mg/kg BW. In this study the dose gives the best result in inhibiting the oxidative stress through an increase in SOD activity was dose of 150 mg/kg BW with percent inhibition of SOD at (81,42% ± 3.91) where the percent inhibition of SOD is directly proportional to the activity of SOD
ANALISIS KANDUNGAN MINYAK ATSIRI DAUN TENGGULUN (Protium javanicum Burm.F.) DENGAN METODE KROMATOGRAFI GAS-SPEKTROSKOPI MASSA I G. P. Sukmajaya A. P. T.; N. M. Puspawati; A. A. Bawa Putra
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (175.44 KB)

Abstract

Leaves of Tenggulun are commonly used in traditional medicine for inflammatory therapy. This research aims to analyze the chemical composition of the volatile oil extracted from Tenggulun leaf by gass chromatography (GC) coupled to mass spectrometer (MS). The volatile oil was obtained by steam distillation method. GC-MS spectra demonstrate that the volatile oil of Tenggulun leaf is constituted mainly of monoterpenes such as ?-ocimene (49.87%) and ?-pinene (0.36%) and sesquiterpenes such as ?-caryophyllene (24.95%), germacrene (4.01%), ?-humulene (2.98%), ?-elemene (2.38%), caryophyllene oxide (0.81%), ?-amorphene (0.46%), and spathulenol (2.64%).
ISOLASI DAN IDENTIFIKASI SENYAWA FLAVONOID PADA DAUN SEMBUKAN (Paederia foetida L) SERTA UJI AKTIVITASNYA SEBAGAI ANTIOKSIDAN Minanti Arna Ekawati; I Wayan Suirta; Sri Rahayu Santi
Jurnal Kimia (Journal of Chemistry) Vol. 11. No. 1 Januari 2017
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 (576.709 KB) | DOI: 10.24843/JCHEM.2017.v11.i01.p07

Abstract

Sembukan adalah tumbuhan liar yang batang dan daunnya telah dimanfaatkan sebagai obat tradisional karena terdapat metabolit sekunder seperti flavonoid, alkaloid, minyak atsiri, dan steroid. Penelitian ini bertujuan untuk mengidentifikasi golongan senyawa flavonoid serta menguji aktivitas antioksidannya. Hasil maserasi 1,2 kg daun sembukan kering menghasilkan ekstrak kental etil asetat 0,34 g, n-butanol 3,12 g, dan air 26,85 g yang positif flavonoid. Pemisahan 3,12 g ekstrak n-butanol dengan kromatografi lapis tipis (KLT) preparatif dengan fase gerak n-butanol : asam asetat glasial : akuades (BAA) menghasilkan 5 fraksi dan 2 fraksi diantaranya yaitu fraksi F2 dan F4 positif flavonoid. Hasil analisis Fraksi F2 dengan FTIR menunjukkan bahwa isolat memiliki gugus fungsi C-H aromatik dan C=C aromatik, OH, C=O, CH alifatik, C-O alkohol, dan C-O eter, sedangkan analisis dengan spektrofotometer UV-Vis menunjukkan isolat menyerap pada panjang gelombang 315,60 nm (bahu) dan 283,80 nm sehingga diduga isolat adalah senyawa flavonoid golongan flavanon dan mempunyai gugus hidroksi pada atom C-3, C-3’, dan C4’. Uji aktivitas antioksidan menunjukkan bahwa isolat dapat menangkap radikal bebas 1,1’-diphenyl-1-picrylhydrazyl (DPPH) sebesar 21,59 % pada konsentrasi 50 ppm.
AKTIVITAS ANTI-RHEUMATOID ARTHRITIS DARI BRAZILIN DAN BRAZILEIN SECARA IN SILICO G. A. K. Amarawati; N. M. P. Susanti; N. P. L. Laksmiani
Jurnal Kimia (Journal of Chemistry) Vol.13 No.2 Juli 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 (373.5 KB) | DOI: 10.24843/JCHEM.2019.v13.i02.p05

Abstract

Rheumatoid arthritis is an autoimmune disease that occur by inflammation chronic which persist as a permanent symptom. That inflammatory process caused joint destruction. Production of pro-inflammatory sytokin such as Tumor Necrosis Factor Alpha (TNF-?) stimulate an autoimmunity. Active TNF-? plays a role in the occurrence of chronic inflammation, in which the formation of active TNF-? is regulated by TNF-? Converting Enzyme (TACE). Brazilin and brazilein are known to have anti-inflammatory activity and immunommodulator potentially as anti-rheumatoid arthritis. The purpose of this study were to determine the affinity and mechanisms of brazilin and brazilein against TACE proteins as anti-rheumatoid arthritis perfomed using molecular docking method. The study was conducted exploratively with several steps such as databases preparation of 3D structures brazilin, brazilein, TACE protein, optimization of brazilin and brazilein 3D structures, protein preparation, molecular docking method validation, and docking brazilin and brazilein in these proteins. The docking results are assessed from the binding energy and hydrogen bonds formed between brazilin and brazilein in proteins. The smaller value to the binding energy, will made the bond between brazilin and brazilein with proteins will be stronger and more stable. The results showed that brazilin and brazilein have activities as anti-rheumatoid arthritis because they are able to inhibit TACE proteins with respective bond energy values -7,24 for brazilin and – 7,59 kcal/mol for brazilein. These results show that brazilin and brazilein have the potential to inhibit inflammatory process and joint destruction in rheumatoid arthritis. Keywords : brazilin, brazilein, in silico, rheumatoid arthritis
PENENTUAN pH OPTIMUM ISOLASI KARAGINAN DARI RUMPUT LAUT JENIS Eucheuma cottonii I G. A. G. Bawa; A. A. Bawa Putra; Ida Ratu Laila
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.928 KB)

Abstract

This research aimed to determine the optimum pH for the isolation carrageenan from Eucheuma cottoniiseaweed. The isolation was conducted at various pH : 7.5, 8.0, 8.5, and 9.0. A TLC using methanol : water (5:1) asmobile phase from standard carrageenan, gave result on Rf value 0.74 as equal to sample on treatment condition atpH 8.0 and 8.5. whereas, sample on treatment condition at pH 7.5 and 9.0 gave Rf value 0.72. In using ethanol :water (3:1) as mobile phase gave result on Rf value 0.75 from both standard and sample treated at 7.5, 8.0, and 8.5,while at pH 9.0 gave Rf value 0.74. Melting point test from standard gave range value 240-242, while for sample ontreatment condition at pH 7.5, 8.0, 8.5, and 9.0 gave range value each such 242-244, 241-243, 240-242, and 240-243.Compounds identification with solubility test method using various solvent medium obviously showed that both ofstandard and sample from various treatment condition were insoluble such as in aquades 200C, NaCl 25% 200C and800C, saccharosse 65% 200C and chloroform. Otherwise, they were soluble in aquades and saccharosse 65% withtemperature 800C. Infrared spectrum standard compound and sample from various treatment condition indicatedthat they were identical. Carrageenan isolation produce the largest number of rendemen at pH 8.5 with about34.65%, while the variant of carrageenan isolate was classified by kappa carrageenan.
EKSTRAKSI ZAT WARNA ALAM DARI BONGGOL TANAMAN PISANG (Musa paradiasciaca L.) DENGAN METODE MASERASI, REFLUKS, DAN SOKLETASI Anak Agung Bawa Putra; Ni Wayan Bogoriani; Ni Putu Diantariani; Ni Luh Utari Sumadewi
Jurnal Kimia (Journal of Chemistry) Vol. 8, No. 1 Januari 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 (170.665 KB) | DOI: 10.24843/JCHEM.2014.v08.i01.p18

Abstract

We have conducted research on natural dyes extraction of banana (Musa paradiasiaca L.) weevil. The rendement concentration, its color, and their functional groups were determined using phytochemical test and ultraviolet-visible spectrophotometer. Extraction of natural dyes in the study was conducted by three methods namely maceration, reflux, and soxletation by using four kinds of extracting solvent including water, ethanol, acetone, and n-hexane. Color extract in water was dark brown, in ethanol and acetone was light brown, and in n-hexane was yellow. Each extract obtained by the three methods of each solvent was concentrated, their rendement were determined. The yields obtained by the maceration method using water was 8.12%, ethanol 2.40%, acetone 0.52%, and n-hexane 1.16%. The yields of the reflux method were 8.68%, 1.84%, 1.44%, and 1.04% respectively. The yields of the soxletation method were 4.80%, 1.12%, 0.44%, 0.56% respectively. The phytochemical test showed that the banana weevil dyes contained tannins and flavonoids. Absorption of the wavelength of energy ultra violet – visible detected at a wavelength between 200 nm up to 400 nm.
PREDIKSI KADAR FLAVONOID TOTAL TEMPUYUNG (Sonchus arvensis L.) MENGGUNAKAN KOMBINASI SPEKTROSKOPI IR DENGAN REGRESI KUADRAT TERKECIL PARSIAL E. Rohaeti; R. Heryanto; M. Rafi; A. Wahyuningrum; L. K. Darusman
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (236.541 KB)

Abstract

The potency of Fourier transformed infrared spectroscopy (FTIR) combined with chemometric method for determining the total flavonoid content of tempuyung (Sonchus arvensis L) has been investigated. Partial least squares regression (PLSR) was used to build a prediction model based on the relationship between concentration of total flavonoids obtained from the reference method (AlCl3) and FTIR spectrum. Application of PLSR in the determination of total flavonoids content in tempuyung gave moderate value for goodness of fit of the model with r calibration = 0974, r validation = 0742, Standard Error Calibration = 0023, Root Mean Square Error Calibration = 0023, Standard Error Prediction = 0078, Root Mean Square Prediction Error = 0076, and bias = -0001 using FTIR derivative spectrum segment 1. From these results, combination of FTIR spectrum and PLSR can be used for the prediction of total flavonoids content in tempuyung.

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