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INDONESIA
Jurnal Kimia Terapan Indonesia
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : 08532788     EISSN : 25277669     DOI : -
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology
Arjuna Subject : -
Articles 283 Documents
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SINTESIS SENYAWA S-BENZOIL-MAG3 UNTUK PEMBUATAN KOMPLEK 99mTC-MAG3 Ratnawati Kukuh
Jurnal Kimia Terapan Indonesia Vol 9, No 1-2 (1999)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3807.997 KB) | DOI: 10.14203/jkti.v9i1-2.190

Abstract

SYNTHESIS OF S-BENZOLY-MAG3 FOR THE PREPARATION OF 99mTc-MAC3 COMPLEX. 99mTc-MAG3 is a new radiopharmaceutical having similar biological properties to 131Ilabeled. Hippuran and is expected to be useful as an ideal agent for renal funtion evaluation. In order to develop the abovepreparation, it is necessary to synthesize S-benzoly-MA3 ligan. In the present study the synthesis was carried out in a 3 stepsreaction of succinimiidyl-S-benzoylthinglycolic acid from S-benzoyltingioglycolic acid, N-hydroxysuccinimide and N,N' -dicyclohexylcarbodiimide. The last step is syntesis of benzoyl-MAG3 from siccinimidyl-S-benzoylthioglycolate and glycylglycylglycine. The product has a crystaline from, colorless needles with a melting point of 203-204°C Purity testing by HPLC yielded a single peak, indicating a sufficiently pure compound. IR spectrophotometry provides proof that the compound is S-benzoyl-MAG3.
FERMENTABILITAS EKSTRAK CINCAU HIJAU (Premna oblongifolia Merr) OLEH TIGA JENIS BAKTERI ASAM LAKTAT Fibra Nurainy; Samsu Udayana; Muhamad Kurniadi
Jurnal Kimia Terapan Indonesia Vol 14, No 2 (2012)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.739 KB) | DOI: 10.14203/jkti.v14i2.340

Abstract

Penelitian ini bertujuan untuk menentukan konsentrasi ekstrak cincau yang tepat dan jenis bakteri asam laktat yangdapat tumbuh pada ekstrak cincau tersebut sehingga diperoleh minuman sinbiotik ekstrak cincau dengan karakteristik terbaik. Penelitian dilakukan terhadap 9 perlakuan yang berbeda dimana perlakuan disusun secara faktorial (3 x 3) dalam rancanganacak kelompok lengkap (RAKL) dengan 3 ulangan.  Faktor pertama adalah konsentrasi ekstrak cincau hijau yang terdiri daritiga taraf, yaitu 0%, 0.5%, dan 1%. Faktor kedua adalah jenis bakteri asam laktat, yaitu Lactobacilus casei, Lactobacillusacidophilus dan Lactobacillus plantarum. Data dianalisis sidik ragam untuk mengetahui ada tidaknya perbedaan antarperlakuan dan dianalisis lanjut dengan uji Beda Nyata Terkecil (BNT) pada taraf nyata  5%. Hasil penelitian menunjukkanminuman sinbiotik ekstrak cincau terbaik adalah minuman yang difermentasi oleh Lactobacillus casei pada konsentrasiekstrak cincau 0,5% yang menghasilkan nilai log total BAL sebesar 9,07 atau setara 2,3 x 109koloni/ml, nilai total asamsebesar 0,96% dan nilai pH sebesar 3,58. Namun demikian pada semua konsentrasi ekstrak cincau yang ditambahkan dandifermentasi oleh Lactobacillus casei, Lactobacillus acidophillus maupun Lactobacillus plantarum tidak menunjukkanadanya aktivitas antibakteri terhadap Bacillus cereus dan Eschericia coli yang diuji dengan metode difusi agar.Kata Kunci: Ekstrak cincau, bakteri asam laktat, minuman sinbiotik
UJI PENDAHULUAN PEMANFAATAN GAS KARBONDIOKSIDA UNTUK SIMULASI PENGOLAHAN LIMBAH CAIR YANG MENGANDUNG LOGAM BERAT TIMAH mTAM Ardeniswan Ardeniswan
Jurnal Kimia Terapan Indonesia Vol 14, No 1 (2012)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5795.861 KB) | DOI: 10.14203/jkti.v14i1.120

Abstract

Wastewater used in this experiment is an artificial wastewater containing lead. First, lead was precipitated with 0.1 M NaOH at pH 9 as hydroxide compound [Pb(OH)J. After Pb(OH)2 precipitated, CO2gas with a concentration of 16% isflowed as much as 120 mL with aflow rate of 120mLimin, where the lead remaining will settle to form lead carbonate (PbCOJ. A part of the precipitate was directly leached without any process of stabilization/ solidification and another part was leached after stabilization/solidification using Portland cement. Subsequent of precipitation that above were added of extraction solution with pH is 2.85 ± 0.05 in the ratio 1: 20. Leaching or TCLP test (Toxicity Characteristic leachate procedure) was conducted using a Rotary Agitator with a rotation speed of 30±2 rpmfor 18±2 hours. The TCLP test results showed that each compound PbC03 and Pb(OH)2 by weighing 1.5g without any solidification process were 91.34 ± 8.74 mg/L and 45.6 :I:0.14 mg/L respectively. These values were exceeds the required quality standardfor TCLP. While the compounds of PbC03 and Pb(OH)2 respectively with a weight of 1.5 g were carried out the stabilization / solidification withPortland cement in the ratio of 1:1:1 (cement: sand: solid waste), apparently both of lead ions fromPbC03 andPb(OH)2 were not leached.Keyword : Carbon dioxide, wastewater, Pb+1, stabilisationlsolidification, TCLP Test
CHARACTERIZATION OF RUBBER-MODIFIED POLYPROPYLENE Nuri Astrini; E. L. Bedia; A. Sudarisrman
Jurnal Kimia Terapan Indonesia Vol 4, No 1 (1994)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3166.698 KB) | DOI: 10.14203/jkti.v4i1.256

Abstract

Blending of 10, 20, 30, 40, and 50% ethylene-propylene random copolymer known as EPM with polypropylene (PP) was conducted and the blends were characterized using wide-angle x-ray scattering (WAXS), differential scanning calorimetry (DSC), scanning electron microscope (SEM), Tensile and Impact tester. As shown in WAXS diffractograms, PP retains its crystalline structure when blended with EPM. DSC analysis suggests that the polymer blend consists of two phase systems, one crystalline and one amorphous. Morphological observation of the polymer blend using SEM shows that the EPA-f globular structure cavitates the PP matrix which further indicates that the polymer blend is only partially compatible. As EPM increases, the tensile yield stress, stress-strain curve and modulus of elasticity decrease. Impact strength on the other hand, increases and showed remarkable effect at 30% EPM - 70% PP.
PENGARUH LOKASI DAN PELARUT PENGEKSTRAKSI TERHADAP KANDUNGAN FITOKIMIA DAN AKTIVITAS ANTIOKSIDAN EKSTRAK PEGAGAN (Centella asiatica L. Urb) Nina Artanti; Rizna Triana Dewi; Faiza Maryani
Jurnal Kimia Terapan Indonesia Vol 16, No 2 (2014)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1479.245 KB) | DOI: 10.14203/jkti.v16i2.13

Abstract

Pegagan (Centella asiatica Linn Urb.) merupakan jenis tanaman yang biasa digunakan dalam industry farmasi dan kosmetik.Penelitian ini ditujukan untuk mengevaluasi pengaruh tiga lokasi asal sampel dan tiga jenis larutan pengekstraksi (methanol, etanol 96% (v/v), dan etanol 70% (v/v)) terhadap aktivitas antioksidan herbal pegagan (Centella asiaticaLinn Urb).Sampel pegagan yang digunakan pada peneltian ini berasal dari Lembang, Bandung, dan Solo.  Pada ekstrak yang diperoleh dilakukan penentuan kadar fenol total, flavonoid total, dan triterpenoid total. Aktivitas antioksidan dari ekstrak dievaluasi berdasarkan metoda peredaman radikal bebas 2,2-diphenyl-1-picrylhydrazyl (DPPH).  Hasil yang diperoleh menunjukkan bahwa simplisia pegagan asal Lembang yang diekstrak dengan etanol 70% mempunyai aktivitas antioksidan tertinggi serta kandungan fenol total dan flavonoid total tertinggi. Sedangkan simplisia pegagan asal Bandung yang diekstrak dengan pelarut metanol memiliki kandungan triterpenoid total tertinggi tetapi memiliki kandungan fenol total dan flavonoid total serta aktivitas antioksidan yang terendah.  Hasil analisa statistik menunjukkan bahwa lokasi asal simplisia pegagan dan polaritas pelarut yang digunakan untuk ekstraksi secara signifikan (p<0,05) mempengaruhi kandungan fenol total, flavonoid total dan triterpenoid total serta aktivitas antioksidan dari ekstrak pegagan.Kata kunci: ekstrak pegagan, antioksidan, polaritas pelarut Pegagan (Centella asiatica Linn Urb.) is a plant species that commonly used in the pharmaceutical and cosmetic industry. Objective of this study is to evaluate the effect of different source location and solvent polarity for the extraction to the content of total phenolic, total flavonoid total triterpenoids as well as antioxidanti activity of pegagan ((Centella asiatica (Linn.) Urb.)extracts.  Pegagan materials for this study are from three different locations: Bandung, Lembang and Solo.  Based on polarity differences methanol, ethanol 96% and ethanol 70% were used as solvent for extraction.  Antioxidant activity of the extract was evaluated based on the method of 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity.  Results showed that the highest total phenolic content and flavonoid content and antioxidant activity were from 70% ethanol extract from Lembang. Materials from Bandung extracted with methanol gave the highest content of total triterpenoid, however has the lowest content of total phenolic, total flavonoid and antioxidant activity.  Statistic  analysis showed that there is significant differences (p<0,05) of results of total phenolic, total flavonoid, total triterpenoid and antioxidant activity due to source location and solvent polarity. Keywords:Centella asiatica (Linn.) Urb extract, antioxidant, polarity solvent
APLIKASI CARA VOLTAMETRI PELEPASAN ANOOIK UNTUK ANALISIS LOGAM BERAT OALAM PARTIKULAT OARI UOARA Evita Boes
Jurnal Kimia Terapan Indonesia Vol 1, No 1 (1991)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3172.78 KB) | DOI: 10.14203/jkti.v1i1.195

Abstract

Determination of heavy metals such as Cu, Pb, Cd and Zn in airparticulate samples have been conducted by using Anodic Stripping Voltammerry method (ASV). Flow injection and wall-jet detector were supplemented to the ASV to improve the sensitivity and reproducibility of the mercury-film electrodes used. The air particulate samples analysed were taken with flow rate of 1 m3/minute. From 5 different places, 20 air samples were analysed and concentration of Cu, Pb, Cd; Zn between 0.0486-16.660 #gjm3 in airparticulates were observed. Limit of detection of the method for Cu, Pb, Cd and Zn were 0.015; 0.020; 0.016; 0.03 ppb respectively. Calibration curves for each metal from 50-500 ppb were linear with correlation coefficient 0.98.
PENENTUAN KONSENTRASI OKSIDA-OKSIDA NITROGEN (NOX) DENGAN METODA PHENOL DISULFONIC ACID MENGGUNAKAN CONTOH UJI BUATAN DAN STANDAR GAS NOx Ardeniswan Ardeniswan
Jurnal Kimia Terapan Indonesia Vol 14, No 2 (2012)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.866 KB) | DOI: 10.14203/jkti.v14i2.342

Abstract

Pada penelitian ini digunakan dua (2) jenis contoh uji yaitu contoh uji gas NOx buatan yang ditampung dalam    kantong  plastik  berukuran 1 m3  dan  standar  gas  NOx  dalam  tangki  silinder  berkapasitas  7 m3. Pengambilan contoh uji dilakukan menggunakan botol gelas labu bundar vakum dengan kapasitas 1 liter yang berisikan larutan campuran asam sulfat encer dan hidrogen peroksida sebagai larutan penjerap. Metoda Phenoldisulfonic acid (PDS) merupakan metoda basah yang umum digunakan untuk analisis  oksida-oksida nitrogen (NOx) yaitu gasNO2 dan NO dari udara emisi sumber tidak bergerak dan merupakan metoda acuan yang telah divalidasi. Metode ini dapat menentukan konsentrasi gas NOx  dari  2,71 ppm volume (0,1 µg NO3-/mL) sampai dengan  271 ppm volume (10 µg NO3-/mL). Standar Gas atau Standard Reference Material (SRM) ataupun  bahan acuan bersertifikat atau certified reference material (CRM) sangat diperlukan oleh laboratorium analisis lingkungan  dalam  melakukan  validasi  ataupun verifikasi metoda analisis yang  akan  digunakan.  Dalam penelitian ini digunakan  Gas Standard Cylinder # ALM 64066 yang mempunyai nilai benar 43 ± 0,2 ppm volume  sebagai  bahan  acuan  untuk  verifikasi metoda  analisis  gas  NOx.  Dari  hasil  penelitiandidapatkan konsentrasi rata-rata standar gas NOx yang terukur dengan metoda Phenoldisulfonic acid adalah sebesar 41,4845 ppm volume, dengan simpangan baku sebesar (SD) 2,8121 ppm volume serta perolehan kembali (% recovery) 96,48 %, yang menunjukkan bahwa metoda ini akurat dan handal.Kata Kunci : Gas NOx, Standar gas, Metoda Analisis, validasi/verifikasi, % perolehan kembali
ANTICANCER ACTIVITIES OF SECONDARY METABOLITES PRODUCED BY TAXUS ENDOPHYTIC FUNGUS PHOMOPSIS CHIMONANTHI A. Desak Gede Sri; J. p. Raymond; Harmastmi Harmastini; L.B. S. Kardono,; M. Hanafi; E. Meiyanto
Jurnal Kimia Terapan Indonesia Vol 13, No 1 (2011)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3233.791 KB) | DOI: 10.14203/jkti.v13i1.125

Abstract

Secondary metabolite by the Taxus endophytic fungus strain Tse3 culture obtained from the West Java Forest has been produced. Production of secondary metabolite had done by aerobic fermentation for 7 days, 3(fC, 120 rpm in PDB (potato dextrose broth) media. The broth of fermentation was extracted by ethyl acetate. Various concentrations of the ethyl acetate extract in (0- 800) mcg/mL were prepared and test against T47D cancer cell line. Cytotoxic test has be done by MTTmethod. ICso value of ethyl acetate extract was 3 mcg/mL. The result of fungus identification by morphology and molecular 18S rRNA was Phomopsis chimonanthi.Key words: Phomopsis chimonanthi, fermentation, isolation, cytotoxicity, identification, taxus
FERMENTASI ALFA AMILASE DARI ASPERGILLUS ORYZAE PADA MEDIA SAGU METROXYLON Yetti M. Iskandar; Dine Agustine; A. Sidik; Linar Z.Udin; A. T. Karossi
Jurnal Kimia Terapan Indonesia Vol 4, No 1 (1994)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1394.31 KB) | DOI: 10.14203/jkti.v4i1.261

Abstract

Alpha amylase is an extracellular enzyme which can be obtained from Aspergillus oryzae fermentation. The production of the alpha amylase in fermentation of sago starch media (Metroxylon sp)in 600, 800 and 1500 ml scale at 30°C for 7 to 9 days in aerobic condition has been conducted. The observations at day-3 indicated that the maximum enzyme specific activity assayed at 40°C for 30 minutes incubation, was 1096 U/g protein, 963 U/g protein and 810 U/g protein for 600, 800 and 1500 ml scale respectively. At this condition starch utilization for growth reached 69% for the 600 and 800 ml scale and 71% for the 1500 ml scale and the biomass production was 6.03 g dry weight/L media, 4.03 g dry weight/L media and 5.66% g dry weight/L media for the 600, 800 and 1500 ml scale respectively.
VALIDASI METODE ANALISIS POLISIKLIK AROMATIK HIDROKARBON (PAH) DALAM SEDIMEN DI SEKITAR PANTAI MAKASSAR Muhammad Syahrir; Nurul Hidayat Aprilita; Nuryono Nuryono
Jurnal Kimia Terapan Indonesia Vol 17, No 1 (2015)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.212 KB) | DOI: 10.14203/jkti.v17i1.18

Abstract

Validation of  analysis  method of PAH have been done in marine sediment of Macassar Coast by Gas Chromatography (GC-FID). Validation of method include:  limit of detection (LoD), limit of quantification (LoQ) and linearity range. The results of validation method of 7 types PAHs (Naphtalene, Acenaphtene, Penanthrene, Fluoranthene, Pyrene, Benzo (a) Anthracene and perylene) give  a  linearity  range between 0.5 to 20 ppm with an average linearity approaches a value of 1. LoD for  Naphtalene; Acenaphthene; Penanthrene; Fluoranthene; Pyrene; Benzo (a) Anthracene; and Perylene are  3.541; 0.208; 1,736; 1.737; 1,738; 12.124; and 2,128 ppm, respectively. LoQ for Naphtalene; Acenaphthene; Penanthrene; Fluoranthene; Pyrene; Benzo (a) Anthracene; and Perylene are  11,803; 0.695; 5.786; 5.786; 5.788; 5.794; 7.0796 and 7.092 ppm, respectively. Limit of detection (LoD), limit of quantification (LoQ), linearity and linear range can be used to determine the concentration of PAH in sediment samples.Keywords: Validation Method, Concentration, PAH, Sediments

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