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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 3, No 1 (2010)" : 9 Documents clear
PRODUKSI BIOETANOL DARI NIRA AREN MENGGUNAKAN ENERGI GEOTHERMAL Tangkuman, Herling D.; Rorong, Johnly A.; Pandara, Dolfie; Tamuntuan, Gerald
CHEMISTRY PROGRESS Vol 3, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.3.1.2010.69

Abstract

The results obtained as follows: 400 L didestilasi fermented sap fractionation and at a temperature of 82 °Cdestilat began to drip. At the end of the distillation process, is obtained destilat as much as 86 L 35% ethanol.Then the results obtained diredestilasi returned 36 L 78% ethanol, then the results added lime and then backdidestilasi results obtained is 28 L 96% ethanol. The next Prosess purification with the addition later inanhidrous compounds using zeolite filtration to obtain 99% ethanol. From purified bioethanol chromatogram inFigure 5, shows that the peak that appears only one (single) at the retention time of 3.03 minutes with a 99.5%level. Chromatogram of bioethanol palm juice samples in Figure 5 shows that the peak with retention time of3.02 minutes is the most dominant peak levels of 96.77%. Peak with retention time of 3.02 minutes for thesample destilat similar retention time for bioethanol Purified (3.03 minutes). This shows that the largestcomponent in the sample is ethanol destilat. Peak with retention time 2.45 minutes on the chromatogram image5 (sample bioethanol) with levels of 2.174%, the sample is expected ester compounds. This is supported by theresults of the determination of sample density, higher destilat (0.8288 g/mL) from the weight of pure ethanol(0.79 g/mL). While the results of an infrared spectrophotometer for pure ethanol and the sample obtained asfollows; Based on the spectrum of pure ethanol in Figure 6, shows the existence of prolonged vibration of theOH absorption at 3232.99 cm-1. In the absorption region 2968.71 cm-1 and 2901.11 cm-1 indicate a prolongedvibration of CH of CH2 and CH3. In the absorption region 1450.46 cm-1 showed a prolonged vibration of CH2.Prolonged vibration of the CH3 region is also shown on the uptake 1383.09 cm-1 and 1332.93 cm-1 absorption inthe region 1045.51 cm-1 indicate a prolonged vibration of CO of alcohol.
PHYTOCHEMICAL ANALYSES AND FREE RADICAL SCAVENGING ACTIVITY FROM TUIS (Nicolaia speciosa, HORAN) Kojong, Novel; Monintja, John; Wehantouw, Frenly; Paendong, Edwin
CHEMISTRY PROGRESS Vol 3, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.3.1.2010.74

Abstract

Tuis (Nicolaia speciosa, Horan) is a plant which used by people to give taste and odor on food, and it also usedas herbal.The objective of this research was to determine phytochemical content and free radical scavengingactivity from Tuis. Phytochemical content in Tuis was determined by its alkaloid, steroid, flavonoid, phenolic,tannins and saponim content. Free radical scavenging activity from Tuis was determined using 1,1-difenil-2-pikrilhidrazil (DPPH) method.Tuis contain phytochemical such as alkaloids, terpenoid, saponim and tannins,although flavonoid appear only in leaves part. The highest free radical scavenging activity from Tuis was leavesextract, with IC50 1,77. Phenolic content in Tuis was believed act as antioxidant.
SATU SENYAWA STEROID DARI KULIT BATANG TUMBUHAN PALIASA (Kleinhovia hospita L.) ASAL SULAWESI SELATAN Gaffar, Imran; Mamahit, Lexie P.
CHEMISTRY PROGRESS Vol 3, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.3.1.2010.70

Abstract

The study aims to isolate and identify the metabolite structure of Kleinhovia hospital L. To achieve the purpose,and extraction of bark with methanol was performed. This extract was partitioned into several organic solutions:n- hexane, chloroform, and ethyl acetate. The partitioned were fractioned and purified by means of severalappropriate methods like liquid vacuum chromatography and pressure column chromatography, and meltingpoint determination. To determine the chemical structure of the isolate, a combination of several spectroscopicmethods, such as infrared (IR), nuclear magnetic resonance (NMR), and advanced NMR technique (HMQC,HMBC and COSY). Result of this research shown that one major constituent was isolated from bark: b-sitosterol.
KARAKTERISASI PRODUK GEN PENGKODE CHAPERONE BACILLUS SP. RP1 Kumaunang, Maureen; Mandik, Yohanis
CHEMISTRY PROGRESS Vol 3, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.3.1.2010.75

Abstract

Molecular chaperone is the group of protein that assist in the correct folding or assembly of other proteins invivo. The objective of this research was to characterize the product of gene encoding chaperone from Bacillussp. RP1 by using in-silico analysis. Analysis of 1053 bp from DNA fragment isolated by PCR showed that it has97% similarity with putative chaperone of Geobacillus kaustophilus (BA000043.1) and 86% similarity with DnaKoperon of B. stearothermophilus (X90709.1). Structure prediction of DnaJ Bacillus sp. RP1 showed that it hassimilar J-domain with that of DnaJ Escherichia coli but cys-rich domain is different.
PRODUKSI GAS KARBON DIOKSIDA SELAMA PROSES BIOREMEDIASI LIMBAH HEAVY OIL DENGAN TEKNIK LANDFARMING Charlena, Charlena; Mas?ud, Zainal Alim; Anas, Iswandi; Setiadi, Yadi; Yani, Moh.
CHEMISTRY PROGRESS Vol 3, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.3.1.2010.66

Abstract

Bioremediation is defined as biological degradation process of organic or inorganic wastes in a controlledcondition to control and reduce their amount in the environment. In this study, the soil which had been polutedby heavy petroleum oil fractions, i.e. heavy oil waste (HOW), was used as sample. The bioremediationtechnique used in this study is an ex-situ technique. This study was conducted to determine the amount ofproduced CO2 gas during the HOW degaradation process. Treatment of heavy oil waste with biostimulation andbioaugmentation. Production of CO2 gas were placed in impiger and analysis with titrimetry method. The highestCO2 production mean was obtained from the bioaugmentation treatment with compost adding, i.e. 244,5 mg/m3.Generally, graphs CO2 gas production followed a similar sinusoidal pattern. From these results it can beinfered that the degradation process of HOW happened during the treatments in aerobic condition.
ANALISIS FITOKIMIA ENCENG GONDOK (Eichhornia crassipes) DAN EFEKNYA SEBAGAI AGEN PHOTOREDUKSI Fe3+ Rorong, Johnly A.; Suryanto, Edi
CHEMISTRY PROGRESS Vol 3, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.3.1.2010.72

Abstract

Eichhornia crassipes is a weeds to people. The objectives of this research were to analyze phytochemicalcontent and photoreduction activity. Phytochemical content that analyzed were total phenolic, total flavonoidand condenced tannin. Photoreduction activity were done using reduction of Fe3+ to Fe2+. The highest totalphenolic, flavonoid and condenced tannin were extracted with water in leaves, 26.327, 3.191, 25.300 mg/kgrespectively. Photoreduction activity of enceng gondok decreases Fe3+ concentration from 9,111 to 1,500 ppm.Enceng gondok posses photoreduction activity because it has phenolic, flavonoid and condenced tannincontent.
UJI INVITRO AKTIVITAS ANTIBAKTERI DARI Lansium domesticum Correa (LANGSAT) Korompis, Grace; Danes, Vennetia R.; Sumampouw, Oksfriani J.
CHEMISTRY PROGRESS Vol 3, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.3.1.2010.68

Abstract

Traditional medicine usage can be a breakthrough for alternative medication with regard of the resistancy ofdiseases-agent to common drugs. Lansium domesticum has been reported containing therapeutic-substancestherefore, has the capacity as a medicine. This research aimed to further elaborate the antibacterial activities ofseeds, fruitshield and bark skin of Lansium domesticum. The in vitro experimental research was conducted,initiated by extract maseration and continued by antibacterial test to bacterial isolation: Salmonella typhii,Escherichia coli, Vibrio cholerae, dan Staphylococcus aureus. Antibacterial activities test has been done bycomparing to several antibiotics and statistically test by ANOVA followed by LSD or BNT test. The study resultshowed that the extract of L. domesticum effectively inhibited the bacterial’s activities. Fitochemistry test of theextract should be conducted to detect the active compound as well as in vivo research for treatment againstbacterial.
SATU SENYAWA ASAM ORGANIK YANG DIISOLASI DARI DAUN GEDI (Abelmoschus manihot L. Medik) ASAL SULAWESI UTARA Mamahit, Lexie P.; Soekamto, Nunuk H.
CHEMISTRY PROGRESS Vol 3, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.3.1.2010.73

Abstract

This research was aimed to isolate and identify the structure of secondary metabolities from gedi leaf. In order to achieve this research aim, an extraction of the gedi leaf tissue with methanol solvent had been carried 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 appropriate method like liquid and vacuum pressure chromatography and also determining the melting points. To determine the chemical structure of the isolate, a compilation of several spectroscopic methods, such as infrared (IR), 1H and 13 C nuclear magnetic resonance (NMR), techniques (HMQC, HMBC, and COSY). Results of this research shown that one major constituent was isolated from the leaf of gedi: heptadecanoid acid. 
Singlet Oxygen Quenching Activities Of Phenolic Extract From Lemon Grass Leaves (Cymbopogon citratus Stapf) Suryanto, Edi; Katja, Dewa Gede; Wehantouw, Frenly
CHEMISTRY PROGRESS Vol 3, No 1 (2010)
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/cp.3.1.2010.67

Abstract

Lemon grass (Cymbopogon citratus Stapf) is a traditional food ingredient characterized by its specific andrefreshing aroma. This objectives of study was determined phytochemical contents and the effect of lemongrass leaves extract in photooxidation linoleic acid and ascorbic acid in system model. Lemon grass leaves wasextracted sequentially with hexane and methanol. The photooxidation reaction system was consisted of linoleicacid 0.03 M in ethanol containing 0.017 mM erythrosine as sensitizer the reaction mixture was exposed under4000 lux fluorescent light up to 5 hours while ascorbic acid 200 μg/mL in phospat buffer solution (pH 7.5)containing 0.0068 mM erythrosine as sensitizer illuminated for 20 minutes. Analyses of phytochemical based ontotal phenolic and flavonoid. Analyses of photooxidation of linoleic acid based on peroxide value anddegradation of ascorbic acid was analyzed using the spectrophotometer at λ 265 nm. The total phenolic andflavonoid content in hexane extract showed the highest phenolic content than methanol extract. Hexane extract1500 ppm exhibited singlet oxygen quenching effect on photooxidation linoleic acid compared with methanolextract, peroxide value 3.57 and 3.72 meq/kg after 5 hours illumination, respectively. Hexane extract 100 ppmalso exhibited singlet oxygen quenching effect on photooxidation ascorbic acid compared with methanol extract,ascorbic acid content 185.44 and 76.67 mg/kg after 5 hours illumination, respectively. It’s concluded thathexane extract of lemon grass leaves contain phenolic component that have singlet oxygen quencher activity.

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