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Published by Universitas Islam Negeri Syarif Hidayatullah Jakarta

ISSN : 24606065 EISSN : 25483013 DOI : 10.15408/jkv

Core Subject : Science,

Chemistry

Jurnal Kimia Valensi is a biannual and peer-reviewed open access journal published by Department of Chemistry, Faculty of Science and Technology UIN Syarif Hidayatullah Jakarta. This journal covering all aspect of chemistry.

Arjuna Subject : Umum - Umum

Articles 15 Documents

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Search results for , issue "Jurnal Kimia VALENSI Volume 5, No. 2, November 2019" : 15 Documents clear

UNIFAC Model for Liquid-Liquid Phase Equilibrium of Penicillin G and 6-APA System Lienda Aliwarga; Herri Susanto; Reynard Reynard; Agnes Veronica Victoria
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

This study investigated the effect of pH and type of solvent on liquid-liquid phase equilibrium in the system of pure penicillin G and mixed penicillin G with 6-APA. Penicillin G extraction was carried out in a pH range of 2.0–5.0 at 4 oC using several types of solvents. The liquid-liquid phase equilibrium mathematical model is prepared assuming that a single stage of thermodynamic equilibrium occurs in a batch process of liquid-liquid extraction. The coefficient of activity was calculated by the UNIFAC method. From the experiment, it was found that the extraction process of penicillin G was strongly influenced by pH of the solution. The highest yield of extraction was achieved with different solvents in the two types of solution. For pure penicillin G system, the highest yields was obtained in n-butyl acetate solvent (95.51%) while for penicillin G mixture with 6-APA, it was obtained in methyl iso-butyl ketone solvent (92.6%). The UNIFAC model have been tested against five three-component liquid-liquid phase equilibrium systems at pH 2.0 and 2.5. It was able to estimate the concentration of penicillin G in the organic phase with a relatively average error between experiment and calculation of 8.32%

Performance of Modified Natural Zeolites by Sodium Hydroxide Treatments in The Esterification of Glycerol and Oleic Acid Rizky Achmad Fauzi; Silvester Tursiloadi; Adid Adep Dwiatmoko; Dede Sukandar; Fauzan Aulia; Nino Rinaldi; Sudiyarmanto Sudiyarmanto
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

Esterification is the reaction of the formation of an ester compound by reacting an alcohol compound and carboxylic acid. In this study, the performance of zeolite-based catalysts has been studied for esterification reactions. Modification of zeolite pore size was done to be hierarchical zeolite, with the aim of increasing the catalytic properties of zeolite. The modification was carried out by desilication by sodium hydroxide treatment with a variation of 0.1; 0.3; 0.5 M. The resulting catalyst was then characterized using BET and XRD. Furthermore, the catalyst was tested for activity for esterification of fatty acids and glycerol and the product was analyzed using GC-MS. Zeolite modification with sodium hydroxide has been proven to improve catalyst performance, without changing their crystal structure. The best catalytic activity was obtained on the catalyst with sodium hydroxide treatment of 0.3 M, resulting glycerol conversion of 92% and selectivity to monoglycerides of 74%.

Molecular Docking of Citronellol, Geraniol and Ester Derivatives as Pim 1 Kinase Inhibitor of Leukemia Cancer Galuh Widiyarti; Firdayani Firdayani; Muhammad Hanafi; Soleh Kosela; Emil Budianto
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

The proviral insertion site in Moloney murine leukemia virus-1 (Pim1) kinase is overexpressed in many human cancer diseases. Inhibition of Pim1 kinase has been reported can suppress cell proliferation and induce apoptotic cell death, so that the protein could be chosen as drug target for the treatment of cancer. Citronellol and geraniol mainly contained in citronella oil that’s one of Indonesian natural products have bioactivity as antitumor agents, so that both of the compounds can be used as guiding compound to be developed as chemoprevention and chemotherapeutic agent compounds for cancer especially for leukemia cancer. In this research, sixteen citronellol and geraniol esters as an inhibitor of leukemia cancer designed were docked based on their interaction with leukemia receptor target of Pim1 kinase by using Molegro Virtual Docker (MVD). The result showed that the binding citronellol and geraniol esters to Pim1 kinase are more stable and better affinity than the binding between citronellol and geraniol, indicated by rerank score were lower than rerank score of citronellol/geraniolPim1 kinase. The docking resulted in the four top-ranked compounds, namely, citronellyl caproate, citronellyl caprylate, geranyl caproate and geranyl caprylate with rerank score value from -182.560 to -189.822 KJ/mol. These compounds have hydrogen bonding with amino acid residues of Lys 67 and Asp 186 of an active site of Pim1 kinase. Based on Lipinski’s rule of five, among of the four top-ranked compounds, citronellyl caproate and geranyl caproate were predicted have potency as new chemopreventive and chemotherapeutic agents for leukemia anticancer candidates.

Cytotoxic Steroids From The Stembak of Chisocheton celebicus KOORD Dewa Gede Katja; Desi Harneti; Tri Mayanti; Nurlelasari Nurlelasari; Rani Maharani; Yoshihito Shiono; Unang Supratman
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

In the course of our continuing search for anticancer compounds from Chisocheton species, three steroids, stigmast-5-en-3β-ol (1), stigmast-5-en-3β-ol-3-O-β-D-glucopyranoside (2) and stigmast-5,22-dien-3β-ol-3-O-β-D-glucopyranoside (3), were obtained from the stembark of Chisocheton celebicus. The structures of compound 1-3 were identified with spectroscopic data including IR, 1D-NMR, 2D-NMR and TOF-MS, as well as by comparing with those spectral data previously. Compounds 1-3, were evaluated for their cytotoxic effects against P-388 murine leukemia cells and displayed the cytotoxicity activity with IC50 values of 12.45 ± 0.050, 52.27 ± 0.031 and 62.52 ± 0.076 µg/mL, respectively.

A Computational Study on the Effects of Molecular Structures of Di-n-butyldithiophosphate and of its Derivatives on the Stability of Their Complex Compounds with Rare-Earth Elements Nurdeni Nurdeni; Atje Setiawan Abdullah; Budi Nurani Ruchjana; Hardianto A; Anggraeni A; Muthalib A; Husein H Bahti
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

The stability of complex compounds formed from the ligand di-n-butyldithiophosphate (DBDTP) and its derivatives, with ions of rare-earth elements (REEs), such as gadolinium ion (Gd3+), is an important factor in the separation and purification processes of the elements using solvent extraction method. The complex stability is dependent, one of which, on the partial charge of the donor atom (S atom in this case) in the molecule of DBDTP or its derivatives. The more negative the partial charge of the donor atom, the more stable is the complex compound formed. The purpose of this study is to explore the effect of electron donating, and of electron withdrawing groups, as well as the effect of the structure of the butyl group in the molecules of DBDTP and or its derivatives on the partial charge of the donor atom. The method used was the semi empirical quantum mechanical calculations, i.e. the Austin Model 1 (AM1). The results of the study showed that the electron withdrawing group of -CN had resulted in the most positive charge on the donor atom, if it is on the second carbon atom of the butyl group in the DBDTP and or its derivatives. Conversely, in the same carbon atom position, the donating electron group of -CH=CH2 had generated the most negative partial charge on the donor atom. Furthermore, the results of this study also revealed that the sec-butyl isomer produced the most negative partial charge on the donor atom, among other isomers.

Ag3PO4-Red Banyan Fruit Extract (Ficus benjamina. L) Nanocomposite for Degradation of Detergent Waste Muhammad Ihram Basri; Komang Sri Devi Wahyuni; Yolanda Liambo Tamallum; La Ode Ahmad Nur Ramadhan; Abdul Haris Watoni
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

Detergents waste containing SDS (Sodium Dodecyl Sulfate) still becomes a major environmental problem that must be overcomed. The degradation of SDS by silver phosphate (Ag3PO4)-Red Banyan extract nanocomposite was performed under visible light. This research aimed to determine the percentage decrease in SDS concentration under visible light by using Ag3PO4 facilitated extract of red banyan fruit. The Ag3PO4-Red Banyan extract nanocomposite was prepared by coprecipitation method and facilitated by a red banyan extract solvent. The result showed that the silver composite phosphate (Ag3PO4) facilitated red banyan extract had a percentage of SDS degradation i.e. 85.9% for 2 hours. This result showed that the silver composite phosphate (Ag3PO4)-a red fruit extract becomes a promising ingredient for degrading SDS in aquatic environment environments.

Synthesis of Graphene Oxide/Polypyrrole (GO/PPy) from Used Batteries as Electrodes in Supercapacitor Cells Muhammad Iqbal Qeis; Ferdian Rizki Amanda; Desi Listiani; Anthoni B Aritonang; Intan Syahbanu
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

Fabrication with graphite-modified GO/PPy composites have been studied from used batteries using the Hummers method. This research was performance in four steps: graphite powder preparation, GO synthesis, GO/PPy composite synthesis, and supercapacitor cell manufacturing. The results of the study were characterized using X-Ray Diffraction (XRD) to see the character of the diffraction patterns formed by carbon batteries used before and after calcination and Fourier Transform Infra-Red (FTIR) to identify compound functional groups and conduct initial tests in the form of voltage, capacitance and life cycle by measuring charge and discharge times. The graphite preparation stage is carried out by the calcination method at 900°C to produce graphite with an angle of 2θ which is 26° with reflection from (d002). FTIR data showed that GO/PPy composites showed a successful combination of characteristics similar to pure polypyrrole and GO which included a broad absorption band located at 3500-2300 cm-1 which was estimated to be stretching the amine from polypyrrole and O-H group in the GO layer and the emergence of peaks new in the absorption band with a wave number 909 cm-1 is the CN vibration of the polymerized pyrrole. Meanwhile, based on the LCR meter measurement results in the best supercapacitor cells in the sampel GO/PPy ratio (3:10) with voltage value of 74.1 mV; a capacitance value of 15.14 µF and the best charge and discharge times.

Medicinal Plants in East Sumba that Potential as Natural Dyes for Ikat Weaving Martini Ndamunamu; Irmanida Batubara; Leti Sundawati
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

The revival of the natural dyes comes from an awareness of maintaining health and preserving the environment. Medicinal plants can be used as a source of the natural dyes. This study aimed to determine the medicinal plants in East Sumba Regency potentially exploited as a natural dye for ikat weaving. Plant data was obtained from Tana Tuku village and Mbatakapidu village in East Sumba Regency. A total 13 species of plants were extracted to dye cotton fabric and mordant by FeSO4 (ferrous sulphate), Al2(SO4)3 (alum) dan CaCO3 (lime). The intensity of color L*, a*, b* were analyzed by Kruskal Wallis test and Duncan post hoc test. The fastness of washing test analyzed by a gray color change scale and staining scale standard. The results showed that the ferrous sulphate mordant produced dark color and the alum mordant produced bright color. The intensity of red color was shown by Swietenia macropylla King and Leucaena leucocephala when it was mordanting by lime. The intensity of yellow color was shown by Woodfordia fruticosa (L.) Kurz with alum and Syzigium polyanthum with lime. The color change was not significant at 40 oC of washing shown by Tamarindus indica and Leucaena leucocephala mordanting by ferrous sulphate, Leucaena leucocephala, Bombax ceiba and Timonius timon mordanting by alum, Tamarindus indica, Leucaena leucocephala, Timonius timon mordanting with lime. All natural dyes did not stain the upholsteries.

Leaching of Iron and Zinc into Food Simultant from Tin Can Packaging Lilis Sulistiawaty; Imas Solihat; Arie Pratama Putra
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

Cans are widely used as primary packaging in various food products. Ferrous (Fe) and zinc (Zn) metal as the constituent components in the manufacture of can packaging bodies can experience corrosion and dissolve in food so that it will affect food quality and finally affect to health. This study aimed to determine the content of Fe and Zn metal at different treatments (time) with 3% acetic acid and vegetable oil as food simulators on can packaging using Atomic Absorption Spectrophotometer (AAS). The results of the analysis showed that the range of Fe and Zn metal content in 3% acetic acid food simulants were respectively 0.15-27.46 mg/kg and 0.00060.007 mg/kg, while in vegetable oil simulants 3% Fe and metal content Zn were 0.6-2.46 mg/kg and 0.00040.0025 mg/kg with 80-100% recovery, respectively. Thus, food from can packaging should not be exposed to oxygen for a long time, especially when it has been opened because it will increase the leaching of Fe and Zn metals from the packaging into food.

Production of Ceramic Membrane Based on Acid- and Alkali-Activated Metakaolinite as Cooling Material for Monocrystalline Silicon Solar Cell Septiani Septiani; Wahyu Febri Ramadhy; Angie Islammiyati; Winda Rahmalia
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 2, November 2019
Publisher : Syarif Hidayatullah State Islamic University

Ceramic membrane based on acid- and alkali-activated metakaolinite has been produced. It was tested as a cooling material for monocrystalline silicon solar cells. Membrane was made by several stages, such as calcination of natural kaolinite at 600 oC for 6 hours to obtain metakaolinite, activation of metakaolinite by concentrated HCl and KOH, and preparation of ceramic membrane. Kaolinite, metakaolinite, and activated metakaolinite were characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), Fourier Transform Infra-red (FTIR), and gas sorption analyzer (GSA). Diffractogram of XRD showed that there was a structural change between activated metakaolinite and natural kaolinite. XRF analysis indicated that the Si/Al of HCl activated metakaolinite was three times higher than natural kaolinite. Activated metakaolinite was made into membrane by adding a binder, then heated at 800 °C for 6 hours. PV cells with and without cooling material were then analyzed their electrical performances. It was found that the maximum energy conversion yield of PV cells without using cooling material was 2.30%, while the maximum energy conversion yield of PV cells with cooling material of meta-kaolinite activated by HCl and KOH were respectively 2.72% and 2.94%.

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Home Page

OAI Link

Editorial Team

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Reviewer

Google Scholar

Contact Name Dr. Sandra Hermanto, M.Si

Contact Email hermantokimia@uinjkt.ac.id

Phone +6285220042401

Journal Mail Official kimia@uinjkt.ac.id

Editorial Address Program Studi Kimia, Fakultas Sains dan Teknologi, UIN Syarif Hidayatullah Jakarta

Location Kota tangerang selatan, Banten INDONESIA

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Contact Name
Dr. Sandra Hermanto, M.Si

Contact Email
hermantokimia@uinjkt.ac.id

Phone
+6285220042401

Journal Mail Official
kimia@uinjkt.ac.id

Editorial Address
Program Studi Kimia, Fakultas Sains dan Teknologi, UIN Syarif Hidayatullah Jakarta

Location
Kota tangerang selatan,

Banten

INDONESIA