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JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya
Published by Universitas Negeri Malang
ISSN : 25496565     EISSN : 25496573     DOI : 10.17966
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
JC-T (Journal Cis-Trans) : jurnal kimia dan terapannya is published by Universitas Negeri Malang, Faculty of Mathematics and Science, Chemistry Department.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 101 Documents
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Adsorpsi Ion Kadmium Menggunakan Silika Xerogel Berbasis Abu Bagasse Isma Rahayu; Nazriati Nazriati; Fauziatul Fajaroh; Adrian Nur
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 3 No. 1 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v3i12019p010

Abstract

Silica xerogel which was derived from bagasse ash originated from the solid waste of sugar cane industrywas used as Cd ion adsorbent. This silica xerogel was synthesized using the sol-gel method on pH 5 and wasapplied to adsorp Cd ion in various contact time, pH, initial Cd ion concentration and temperature. It wasfound out that the optimum pH for Cd ion adsorption was at pH 7 using 0.01 g of silica xerogel within 60minutes of contact time. The adsorption isotherm follows the Langmuir isotherm model (R2 = 0.997) and adsorption kinetics followed the pseudo-second-order model (R2 = 0.998).
Sintesis Wax Ester dari Asam Lemak Stearat secara Enzimatis Sebagai Bahan Baku Kosmetik Roushandy Asri Fardani; Erin Ryantin G
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 3 No. 1 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v3i12019p017

Abstract

The purpose of this study is to synthesize wax ester from fatty acid stearic with oleil alcohol, determine theoptimum conditions and to find out what percentage of wax ester is produced. Wax ester synthesis iscarried out enzymatically. Qualitative wax ester analysis using TLC and FT-IR, quantitatively by acid-basetitration and determination of optimum conditions using a variation of time, temperature, number ofenzymes. Based on the results of the TLC analysis obtained the Rf value of 0.14, FT-IR spectrum of stearicfatty acids, oleil alcohol and wax ester can be concluded that wax ester can be synthesized from fatty acidstearic with oleil alcohol enzymatically. The optimum conditions for wax ester synthesis from stearic fattyacid for 2 hours, at 40 ° C, with a lipase amount of 0.15 grams, in the ratio of stearic acid: oleil alcohol =1: 3 and with n-hexane as the best solvent. The percentage of conversion obtained is 94%.
Efek Radiasi Sinar Matahari dan Sinar Ultra Violet pada Plastik Styrofoam Kemasan Makanan dan Minuman Sumari Sumari; Nazriati Nazriati; Fauziatul Fajaroh; Aman Santosa; Lailatur Rizqiyah
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 3 No. 1 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v3i12019p023

Abstract

The widespread use of styrofoam as food and beverage packaging is a very urgent issue to study, especiallyregarding to human health. This polymer is thought to be easily degraded by beam radiation to producemonomers that are easily oxidized to carcinogenic styrene oxides. Studies on the effects of sun and UV rayson plastic for food and beverage packaging have been carried out. Some styrofoam samples are made in theform of thin films and some are made in slabs. The samples were exposed to sunlight and the others wereexposed to ultraviolet light using 20 watts UV lamps for 10, 25, and 40 days. The effects of radiation onstyrofoam were characterized using a tensile test, FTIR, and physical observation. The results showed thatboth sun and ultraviolet radiation can cause degradation of styrofoam. Radiation of sunlight and UV lighton styrofoam generate a decrease in tensile strength, an increase in the relative concentration of styreneoxide, a change in the color of the sample from white to yellow, and cracks arise. The longer the time of sunand ultraviolet radiation can accelerate styrofoam plastics degradation.
Skrining Turunan Flavonoid Sebagai Kandidat Inhibitor Protease nsP2 dari Virus Chikungunya Menggunakan Molecular Docking Khoirul Faqih; Yahmin Yahmin; Suharti Suharti
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 3 No. 1 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v3i12019p034

Abstract

This study were aims to obtain flavonoid derivative compounds that have the potential as nsP2 proteaseinhibitors from the chikungunya virus (CHIKV) by molecular docking method and to examined theinteraction of flavonoids derived from screening results. The results showed that after going through amolecular docking process using PyRx 0.8 software, flavonoid derivative compounds were potentialinhibitors of six flavonoid groups, namely hesperidin, rhoifolin, myricetin, genistin, peonidin, phlorizinwhich had a root means square deviation (RMSD) value of 0Å with binding affinity values respectively -9.4;-8,5; -8,1; -7.9; -7.6; and -6.9 kcal/mol. Molecular visualization results show the occurrence of hydrophobicinteractions and the formation of hydrogen bonds.
Validasi Pembuatan Senyawa Bertanda 131I-MIBG di PTRR Batan Untuk Diagnosis dan Terapi Neuroblastoma Yono Sugiharto; Maskur Maskur; Chairuman Chairuman
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 4 No. 1 (2020)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v4i12020p001

Abstract

Neuroblastoma is a type of neuroendocrine cancer that is very dangerous, but can be cured if earlydetected and appropriate therapy. Center for Radioisotope and Radiopharmaceutical Technology BATANSerpong has been succeeded in making labelled compounds131I-MIBG for early detection of neuroblastomacancer. Iodine-131 (I-131)-MIBG was prepared by reacting 127I-MIBG sulfate and Na131I using CuSO4catalyst and reducing agent as sodium bisulphite, pH = 3-4 with CH3COOH.The solution was refluxed at atemperature of 1600C so that the resulting of 131I-MIBG labelled compound.The radiochemical purity of theproduct was tested by chromatographic, using whatman paper number 1 asstationary phase and the mobilephase containing of n.butanol liquid mixture: acetic acid: water (5: 2: 1), and radionuclide purity test usinggamma spectrometer. Radiochemical and radionuclide purity131I-MIBG (diagnosis) was carried outof99.72% ± 0.32 and 99.99% ± 0.00 respectively. The labelled compound 131I-MIBG (therapy) withradioactivity dose of 25 mCi / vial was obtained of radiochemical purity = 98.33% ± 0.53 and radionuclidepurity = 99.99% ± 0.00, whereas radiochemical purity and radionuclide purity of131I-MIBG (therapy) withradioactivity dose of 50 mCi / vial was obtained 98.83% ± 0.32 and 99.99% ± 0.00 respectively.
Sintesis Material Fotokatalis Strontium titanat (SrTiO3) dengan Metode Hidrotermal pada Variasi Suhu Mohamad Thoif; Anton Prasetyo; Nur Aini
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 4 No. 1 (2020)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v4i12020p008

Abstract

The perovskite compound SrTiO3 has the potential to be used in photocatalyst technology. The morphologyparticle was reported to affect its photocatalytic activity. The hydrothermal synthesis method is one of the methods which can produce the typical morphology. In this research, SrTiO3 was synthesized using the hydrothermal method with heating temperature variations of 150, 175, 200, and 225 °C at 24 hours. The XRD data showed that SrTiO3was successfully synthesized at a synthesis temperature of 150, 175, 200 and 225 °C, but there were found impurities (TiO2). The morphology of SrTiO3 which using temperature synthesized 225 oC is cubic shape and having the biggest size. The bandgap value of SrTiO3 product was obtained at range 3,14-3,20 eV.
Identifikasi Fitosterol dengan Kromatografi Gas – Spektrometer Massa pada Ekstrak Kloroform Biji Buah Atung (Parinarium Glaberimum Hassk) Asal Kabupaten Seram Bagian Barat, Maluku Candra Yulius Tahya; Elen Tiwery; Mega Gracelia Monaten; Tryani K. Junita Lumbantoruan
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 4 No. 1 (2020)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v4i12020p014

Abstract

One of the natural potentials that can be used as traditional medicine and natural preservatives is theseeds of Atung which can be found in Ambon, Seram and Lease Islands. The purpose of this study was toidentify bioactive phytosterols in the chloroform extract of Atung fruit seeds. Five main compounds have beenidentified in the chloroform extract of Atung fruit seeds (Parinarium glaberimum Hassk) which are linoleicacid (8.88%); stearic acid (8.23%); stigmasta-5,22-dien-3-ol,(3β,22E) or stigmasterol (10.37%); stigmast-5-en-3-ol,(3β) or β-sitosterol (19.59%); and stigmast-5-en-3-ol, (3β, 24S) or γ-sitosterol ( 33.74%) through gaschromatography-mass spectroscopy by analyzing the similarity of molecular weight and positive ionmass/charge fragments and based on the comparison of the GC-MS retention time of phytosterols. This studyis the first to report the presence of stigmasterol, β-sitosterol and γ-sitosterol in the chloroform extract ofAtung fruit seeds (Parinarium glaberimum Hassk). γ -Sitosterol, the epimer of β-sitosterol, has the greatestabundance in the chloroform extract of Atung fruit seeds.
Pengaruh pH dan Konsentrasi Elektrolit dalam Elektrokoagulasi Limbah Surfaktan Hanumi Oktiyani Rusdi; Surjani Wonorahardjo; Yudhi Utomo; Anugrah Ricky Wijaya
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 4 No. 1 (2020)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v4i12020p021

Abstract

Surfactants are the main components in detergents. Surfactants in detergents will form a layer that spreads on the surface of the water, which can reduce the surface tension of the water and will form an emulsion the foam formation that can repel dirt. Large amounts of surfactants in wastewater discharged into the environment can cause damage to aquatic life, water pollution and endanger human health. Therefor it is necessary to separate or change them into other harmless materials before being discharged into the environment. One of the methods used is electrocoagulation. The electrocoagulation method is an environmentally friendly method of treating liquid waste by combining the principles of coagulation, floatation and electrochemistry. In this study, the electrocoagulation method was carried out by varying pH and electrolyte concentrations in the simulated surfactant waste treatment. Surfactant levels were determined by extraction of ion pair surfactant-methylene blue with an organic solvent then measured using spectrophotometer. The optimization of the method is done by determining the maximum absorption length, optimum pH, and the effect of adding electrolytes with different concentrations. The results showed that the maximum absorption at a wavelength of 652 nm.
Konsentrasi Katalis dan Suhu Optimum pada Transesterifikasi Minyak Biji Pepaya (Carica papaya) sebagai Bahan Baku Biodiesel Aman Santoso; Farashinta Nadia; Rini Retnosari; Anugrah Ricky Wijaya; Sumari Sumari; Ihsan Budi Rachman
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 4 No. 1 (2020)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v4i12020p029

Abstract

Papaya seed waste in Indonesia is abundant and contains oil that has the potential to be transesterified into fatty acid methyl esters. This study aims to determine: (1) the optimum conditions for methylester synthesis with two stages of reaction, (2) the character of the transesterified methy-ester mixture (3)the potential as biodiesel and its constituent components. Several stages in this study were (1) isolation ofoil from papaya seeds, (2) making fatty acid methyl esters from papaya seeds, (3) characterization ofsynthesized compounds including physical properties: viscosity, refractive index, density, acid number test,(4) the determination of the methyl ester component was carried out by analyzing the results of GC-MS.The optimum conditions for the synthesis were obtained at a KOH concentration of 1% w/w, with a methylester yield of 75.82% w/w. The characteristics of the yield compound are density 0.85 g /mL, refractiveindex 1.44, viscosity 4.76 cSt and acid number 0.70 mg KOH / g which are included in the SNI biodieselrange, so they have the potential to be biodiesel.
Studi In Silico Fitosterol dan Turunannya Sebagai Kandidat Obat Anti Kanker Payudara Julian Sagus Bramasta; I Gusti Made Sanjaya
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 5 No. 1 (2021)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v5i12021p001

Abstract

Phytosterols and their derivatives have the potential to inhibit the growth of breast cancer, one ofwhich is β-sitosterol, which has been shown to reduce tumor size after consumption in previous studies.This study aims to examine anti-breast cancer drugs from phytosterol compounds and their derivatives.The study was conducted using the Quantitaitve Structur-Activity Relationship method and strengthened bythe molecular docking method. The QSAR descriptor used was electronic, steric and hydrophobic. Thecharacters of each descriptor were computed using NWchem and Gamess (DFT method, 6-31 * base set),SwissAdme, Molinspiration, and pkCSM. Tethering and molecular visualization were carried out withAutodock Tools 1.5.6 and Biovia Discovery Studio 2019. The results show that the best model of the HKSAequation for medicinal compounds from phytosterol compounds is Log P = 316.46 + (-1.513 * MR) + (-0.668 * V) + (3,926 * P) + (-18,235 * Homo) + (2,757 * Lumo), from this equation we get the bestcompound (9aR, 11aR) ‐7 ‐ chloro ‐ 1 - ((5R) ‐5‐ethyl‐6‐methylheptan‐2‐yl]‐9a,11a‐dimethyl‐1H, 2H, 3H,3aH, 3bH, 4H, 6H, 7H, 8H, 9H, 9aH, 9bH, 10H, 11H, 11aH‐cyclopenta[a]phenanthren7‐ol.

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