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INDONESIA
CHEMISTRY PROGRESS
Published by Universitas Sam Ratulangi
ISSN : 19795920     EISSN : 27158365     DOI : -
Core Subject : Science,
Chemistry
Majalah Ilmiah Chemistry Progress merupakan media untuk menyebarkan informasi ilmiah dan sarana komunikasi bagi para ilmuan dan cendekiawan melalui tulisan-tulisan ilmiah. Majalah Ilmiah Chemistry Progress terbit dua nomor dalam satu tahun (Mei dan November) berisi kajian penelitian dalam lingkup ilmu kimia (organik, anorganik, analitik, biokimia, fisika, bahan alam, lingkungan, pangan, kelautan, pertambangan, farmasi dan komputasi). Jumlah halaman pervolume adalah 55-65 halaman.
Arjuna Subject : -
Articles 9 Documents
 1 
Search results for , issue "Vol 2, No 1 (2009)" : 9 Documents clear
PERBANDINGAN KUALITAS KARBON AKTIF YANG DIBUAT DARI BATOK KELAPA HIBRIDA DAN BATOK KELAPA DALAM Tangkuman, Herling D.; Aritonang, Henry F.
CHEMISTRY PROGRESS Vol 2, No 1 (2009)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.2.1.2009.60

Abstract

This research was done to compare carbon quality made from hybrid coconut shell and deep coconut shell using direct process from coconut shell to be active carbon at 800- 1200oC temperature. The results shows that active carbon from deep coconut shell was better compared with hybrid coconut shell. Deep coconut shell has: ash content 2,1, water content 3,9, bonding carbon content 98, Iod absorbed ability 904, CTC 54, good galnular, consecutively and hard, whereas hybrid coconut shell has : ash content 12,4, water content 6,8, bonding carbon content 68, Iod absorbeb ability 482, CTC 28, desultory glanular and brittl
POTENSI DAUN ALPUKAT (Persea Americana Mill) SEBAGAI SUMBER ANTIOKSIDAN ALAMI Katja, Dewa Gede; Suryanto, Edi; Wehantouw, Frenly
CHEMISTRY PROGRESS Vol 2, No 1 (2009)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.2.1.2009.65

Abstract

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AKTIVITAS PENANGKAP RADIKAL BEBAS DARI EKSTRAK FENOLIK DAUN SUKUN (Artocarpus altilis F.) Suryanto, Edi; Wehantouw, Frenly
CHEMISTRY PROGRESS Vol 2, No 1 (2009)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.2.1.2009.56

Abstract

The objectives of this study was to determine phytochemicals content and free radical scavengingactivities of bread fruit leaves. Bread fruit leaves were finely ground in a laboratory mill and samples wasextracted with methanol, ethanol and acetone under room temperature, respectively. Analyses ofphytochemicals based on total phenolic, flavonoid and condensed tannins. The radical scavengingactivities of extracts were determined by 1.1-diphenyl-2-picrylhydrazyl (DPPH) and the ferric reducingability plasma assay. The highest total phenolic content was in methanol extract (EM), followed byethanol extract (EE) and acetone extract are 179.89 ± 3.17; 152.55 ± 3.17 and 62.46 ± 1.31 mg/Kgrespectively. EM possessed highest contents of total flavonoid and condensed tannins compared with EEand EA. The addition of methanol extracts of in the reaction mixture showed the highest scavengingactivity in 1.1-diphenyl-2-picrylhydrazyl (DPPH) radical 74.80% followed by EE 71.80% and 38.80%.These result suggested that contains phenolic compounds groups having free radical scavengingactivities.
SATU SENYAWA STEROID DARI DAUN GEDI (Abelmoschus manihot L. Medik) ASAL SULAWESI UTARA Mamahit, Lexy
CHEMISTRY PROGRESS Vol 2, No 1 (2009)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.2.1.2009.61

Abstract

This research was aimed to isolate and identify the structure of secondary metabolites from gedi leaf. Inorder to achieve this research aim, an extraction of the gedi leaf tissue with methanol solvent had beencarried out. These extract then was partitioned in several organic solvents such as n-hexane, chloroform,and ethyl acetate. Further, the resulted partition was fractionation and purifying undergoes an appropriatemethod like liquid and vacuum pressure chromatography and also determining the melting points. Todetermine the chemical structure of the isolate, a compilation of several spectroscopic methods, such asinfrared (IR), 1H and 13C nuclear magnetic resonance (NMR), and an advanced NMR techniques(HMQC, HMBC, and COSY). Results of this research shown that one major constituent was isolated fromthe leaf of gedi : b-sitosterol.
ANALISIS IN-SILICO PROTEIN DnaJ Bacilus stearothermophilus Kumaunang, Maureen; Kamu, Vanda S.; Mandik, Yohanis I.
CHEMISTRY PROGRESS Vol 2, No 1 (2009)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.2.1.2009.63

Abstract

DnaJ is a chaperone which has function in facilitating folding, translocation, and degradation of protein.The aim of this research was to undertake in silico study of DnaJ protein from Bacillus stearothermophilus.Structure analysis of DnaJ B. stearothermophilus showed that it has J-domain which has two conservedmotifs, i.e. HPD and QKRA motifs. It also has cys-rich domain which has one conserved motif, i.e.CXXCXGXG. Structure prediction of DnaJ B. stearothermophilus showed that it has similar structure of Jdomainand cys-rich domain with that of DnaJ Escherichia coli.
REAKSI ESTERIFIKASI GARAM ASAM LEMAK DENGAN ALKIL KLORIDA BERANTAI PANJANG MENGGUNAKAN TRIDODEKILAMIN HIDROKLORIDA SEBAGAI KATALIS PERPINDAHAN DUA FASA Aritonang, Henry F.; Tangkuman, Herling D.
CHEMISTRY PROGRESS Vol 2, No 1 (2009)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.2.1.2009.59

Abstract

Synthesis of didodekyl azelate produced by estherification reaction of disodium azelate salt with dodecylchloride used tridodecylamine hydrochloride as catalyst of two phase transfer was 34,123 gram (65,11%). Product of ester didodekyl azelate was identified by IR spectrometry which shows strong absorptionat 1700-1600 cm-1 indicating ester group C=O and 1H-NMR spectra showed that the number of protonsester was five lingkungan chemistry yang berbeda.
MEMPELAJARI REAKSI ISOMERISASI SAFROL DENGAN PEREAKSI t-BuOK/DMSO DAN KOH/CH2OHCH2OH Gugule, Sanusi; Fatimah, Feti
CHEMISTRY PROGRESS Vol 2, No 1 (2009)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.2.1.2009.64

Abstract

The studies have been done about the transformation of safrole into isosafrole. The transformation wasdone using reagents, namely t-BuOK/DMSO and KOH/CH2OHCH2OH. The purities of all products weretested with thin layer and gas chromatography. Thereafter the structures were identified with infraredspectrophotometers, NMR1H and 13C spectrometry, and mass spectrometry. The isomerization product ofsafrole into isosafrole with highest percentage yield (97%) was given t-BuOK/DMSO.
ANALISIS MOLEKULER ESCHERICHIA COLI SEROTYPE O157:H7 PADA AIR MINUM DALAM KEMASAN DAN ISI ULANG MENGGUNAKAN TEKNIK Kandou, Febby Ester Fany
CHEMISTRY PROGRESS Vol 2, No 1 (2009)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.2.1.2009.57

Abstract

This research aims to analyze the existence of Escherichia coli serotype O157:H7 in packaged andrefilled drinking water using Polymerase Chain Reaction (PCR) technique with gene target rfbE. Theresearch was carried out at Molecular Biology and Immunology Laboratory of Medical Faculty,Hasanuddin University Makassar. The methode used was Polymerase Chain Reaction (PCR) techniquei.e. Isolation/Extraction DNA bacteria of Escherichia coli serotype O157:H7 with Boom methode,Amplification DNA fragments of bacteria and Electrophoresis for visualization DNA fragments. Theresults show that based on DNA band that resulted, there are 8,33% of packaged drinking watersamples and 25% of refilled drinking water samples are contaminated by Escherichia coli serotypeO157:H7.
PENURUNAN KANDUNGAN BENZO(A)PIRENA ASAP CAIR HASIL PEMBAKARAN Fatimah, Feti; Gugule, Sanusi
CHEMISTRY PROGRESS Vol 2, No 1 (2009)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.2.1.2009.58

Abstract

This research was done to study benzo(a)pirene content produced from liquid smoke by directburning process, also how to reduced the component. The results show that liquid smoke from coconutpericarb that produced by direct burning method has 28% recovery. The smoke was yellow to brown,smelled as smoke with density 0,9965 g/mL. To reduce benzo (a) pirene of liquid smoke was done usingredistilled and absorbed with active carbon. Redistilled liquid smoke was done at 98-100 oC. RedistilledLiquid smoke almost colorless and no color compared with initial liquid smoke, less smoke scent. Thedensity was 0,9970 g/mL with 55% recovery from initial smoke. Absorbed liquid smoke using activecarbon (1:5) was acquired more clear liquid, no color and no scent, density 0,9975 g/mL with 51,7%recovery. Benzo(a)pirene concentration can be reduced using redistilled and absorbed with activecarbon method. Reduce concentration using redistilled technique was 33.1%, whereas using absorbedtechnique was 54,3%.

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