Claim Missing Document
Check
Articles

Found 20 Documents
Search

Potensi Ekstrak Metanol Daun Andong Merah (Cordyline Fruticosa (L.) A Chev.) dalam Menurunkan Kadar Asam Lemak Bebas dan Glukosa Darah pada Tikus Obesitas Mahayani, Putu Ayu Erna; Bogoriani, Ni Wayan; Bawa Putra, Anak Agung
Jurnal Media Sains Vol 3, No 1 (2019): JURNAL MEDIA SAINS
Publisher : LPPM Universitas Dhyana Pura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.447 KB) | DOI: 10.36002/jms 3.v3i1.698

Abstract

ABSTRAKTelah dilakukan uji aktivitas ekstrak metanol daun andong merah (Cordyline fruticosa (L.) A Chev.) dalam menurunkan kadar glukosa darah dan asam lemak bebas pada tikus wistar betina yang obesitas. Hasil uji fitokimia menunjukkan bahwa ekstrak mengandung senyawa polifenol, flavonoid, saponin, alkaloid, dan steroid. Hasil uji kadar glukosa dan asam lemak bebas menunjukkan bahwa pemberian ekstrak dosis 35mg/kg BB dan 70mg/kg BB dapat menurunkan kadar glukosa darah dan asam lemak bebas dibandingkan dengan kelompok tikus yang hanya diberi pakan tinggi lemak dengan perbedaan nyata p<0,05.Kata kunci: asam lemak bebas, Cordyline fruticosa (L.) A Chev., glukosa darah, obesitasABSTRACTThe activity of methanol extract of red andong leaf (Cordyline fruticosa (L.) A Chev.) to decrease blood glucose level and free fatty acid were investigated in obese female wistar rats. The results of phytochemical tests showed that the extract contains polyphenolic, flavonoid, saponin, alkaloid, and steroid compounds. The results of glucose and free fatty acid test showed that giving of extract with dose 35mg / kg BW and 70mg / kg BW could decrease blood glucose level and free fatty acid compared to the group of wistar rats were fed high fat with significant difference p <0,05.Keywords: blood glucose, Cordyline fruticosa (L.) A Chev., free fatty acid, obesity
PREPARASI KATALIS NIKEL-ARANG AKTIF UNTUK REAKSI HIDROGENASI ASAM LEMAK TIDAK JENUH DALAM MINYAK KELAPA Imam Rasidi; Anak Agung Bawa Putra; I Wayan Suarsa
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 (222.75 KB) | DOI: 10.24843/JCHEM.2015.v09.i01.p13

Abstract

This study aims to determine the optimum concentration of nickel nitrate in the formation of a nickel catalyst  embedded on activated charcoal by impregnation method, the chemical and physical properties of nickel- coconut shell charcoal in partidular acidity and surface area, as well as the ability of nickel-charcoal catalyst activity in the hydrogenation of linoleic methyl ester in coconut oil. The study begins with a preparation of a mixture of activated charcoal with NaOH activation and preparation of nickel-activated charcoal catalyst with a wet impregnation method. At this stage FT-IR and UV-Vis were used to characterize the products. The resulting catalytic activity was tested with the hydrogenation reaction. Esterification was then performed and the result was determined with GC-MS. The optimum concentration of the catalyst was found to be 0,3M. The catalyst acidity was indicated by the presence of oxide groups including carboxyl, phenols, aldehydes and carbonyl groups, whereas the average surface area was about 21.8753 m2/g. The catalytic activity of nickel-activated carbon in the hydrogenation reaction of methyl ester was optimum at a pressure of 2 atmospheres.
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.
KOMBINASI BAHAN ORGANIK (RASIO C:N) PADA PENGOLAHAN LUMPUR (SLUDGE) LIMBAH PENCELUPAN Ida Ayu Ary Pramaswari; I Wayan Budiarsa Suyasa; Anak Agung Bawa Putra
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (217.495 KB)

Abstract

A research on the Combination of Organic Matter (the ratio of C:N) in the Sludge Treatment of dying waste has been conducted. The sludge was mixed with organic matter wich were dried leaves and dung in various compositions. The compositions (sludge : organic matter) made were 3 : 7, 1 : 1, and 7 : 1.In this research it was found that the first composition contained the highest organic matter (the lowest C : N = 28.05/1) and showed the best effect to the composting process indicated by physical characteristics. The Compost with the lowest ratio C:N (17,71/1) gave the best total N, organic C, available K, and available P contents which were 0.98%; 17.90 %; 22,092.1894 ppm; and 568.2312 ppm respectively. All composts had organic C and total N that meet the SNI 19-7030-2004, and high available P and K contents. These were in agreement to the evaluation of fertility analysis. More over, all compost showed physical caracteristic such as temperature, colour, texture, and odour that are in agreement to those of SNI 19-7030-2004. Unfortunately the pH did not meet the SNI 19-7030-2004.
PENURUNAN KADAR COD, SURFAKTAN, DAN FOSFAT LIMBAH LAUNDRY DENGAN BIOSISTEM TANAMAN I Wayan Budiarsa Suyasa; A A Gede Bawa Putra; I Kadek Sutomo 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 (256.442 KB) | DOI: 10.24843/JCHEM.2016.v10.i02.p11

Abstract

Telah dilakukan penelitian mengenai pengolahan air limbah laundry dengan biosistem tanaman yang divariasikan dengan dan tanpa penambahan suspensi aktif. Penelitian ini bertujuan untuk menentukan pengaruh penambahan suspensi aktif dan pengaruh waktu perlakuan terhadap perubahan kadar COD, Surfaktan, dan Fosfat pada biosistem tanaman serta menentukan kapasitas pengolahan biosistem tanaman terhadap perubahan nilai ketiga parameter tersebut. Hasil penelitian menunjukkan bahwa penambahan suspensi aktif dan waktu perlakuan dapat berpengaruh terhadap perubahan nilai COD, Surfaktan, dan Fosfat. Pengaruh suspensi aktif terlihat dari waktu minimal perlakuan untuk memenuhi baku mutu, dimana untuk parameter Surfaktan dan Fosfat pada sistem penambahan suspensi aktif memiliki waktu minimal perlakuan yang lebih cepat daripada sistem tanpa penambahan suspensi aktif. Sedangkan pengaruh waktu perlakuan terlihat dari nilai ketiga parameter tersebut, dimana semakin lama waktu perlakuan maka semakin kecil nilai dari ketiga parameter tersebut. Dari hasil uji anova (analisys of variance) menunjukkan bahwa penambahan suspensi aktif dan waktu perlakuan berpengaruh signifikan terhadap nilai COD, surfaktan dan fosfat. Kapasitas pengolahan pada sistem tanpa penambahan suspensi aktif adalah 8,7259 ppm/m3jam untuk COD, 0,7715 ppm/m3jam untuk Surfaktan dan 0,2178 ppm/m3jam. Kapasitas pengolahan sistem dengan penambahan suspensi aktif adalah  8,4500 ppm/m3jam untuk COD, 0,7821 ppm/m3jam untuk Surfaktan dan 0,2399 ppm/m3jam untuk Fosfat.  
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%).
ANALISIS KUALITATIF SENYAWA PARASETAMOL (ACETAMINOPHEN) PADA URIN DAN RAMBUT MENGGUNAKAN KROMATOGRAFI GAS – SPEKTROMETRI MASSA (GC-MS) Komang Ari Gunapria Darmapatni; A. A. Bawa Putra; Ni K. Ariati; Ni M. Suaniti
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 (57.54 KB) | DOI: 10.24843/JCHEM.2014.v08.i02.p18

Abstract

Paracetamol (acetaminophen) is one of analgesic-antipyretic drugs which can be commercially obtained. The research aimis to analyze qualitatively the presence of paracetamol (acetaminophen) in urine and human hair by gas chromatography-mass spectrometry (GC-MS). Urine and human hair sample were obtained from patients (volunteers) who consume paracetamol in therapeutic dose without consumption patterns change. Extraction of paracetamol in urine used ethyl acetate and in human hair used methanol. The extract was then derivatized with BSTFA and 1% TMCS and analyzed using gas chromatography-mass spectrometry (GC-MS). The result showed that urine samples after 1, 2, and 3 hours consuming paracetamol contained acetaminophen-TMS. Those after 24, 168, and 720 hours after consuming paracetamol did not contain acetaminophen-TMS.  In human hair, the acetaminophen-TMS was found in samples of 1, 2, 3, 24, 168, and 720 hours after consuming paracetamol.
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.
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.
KAJIAN KAPASITAS DAN EFEKTIVITAS RESIN PENUKAR ANION UNTUK MENGIKAT KLOR DAN APLIKASINYA PADA AIR I K. G. Antara; I W. Budiarsa Suyasa; A. A. Bawa Putra
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 (73.741 KB)

Abstract

This paper reports a research on the capacity and efficiency of resin anion exchange on chloride in a batchsystem. The system was then applied to chloride level in spring water in Sedang Village. Chloride content analysedwere using argentometry methode .The results of the research showed that resin was potential to reduce chloride level below Water QualityLimit for (Group B). Its capacity was 0.6462 mg/g and saturating time was 260 minutes. Its effectiveness between64.50% - 97.04%.The analysis of spring water in Sedang Village showed that these springs were contaminated with 260.33 –295.83 ppm chloride. The resin exchange applied to these waters reduced the chloride levels to the level below theGuideline Limit for the 250 mg/L purposes (Group B).