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JURNAL KIMIA SAINS DAN APLIKASI

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Published by Universitas Diponegoro

ISSN : 14108917 EISSN : 25979914 DOI : -

Core Subject : Science, Engineering,

Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering

urnal Kimia Sains dan Aplikasi (p-ISSN: 1410-8917) and e-ISSN: 2597-9914) is published by Department of Chemistry, Diponegoro University. This journal is published four times per year and publishes research, review and short communication in field of Chemistry.

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Articles 796 Documents

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Antioxidant Activity of Daemonorops draco Resin Sri Purwanti; Wulan Tri Wahyuni; Irmanida Batubara
Jurnal Kimia Sains dan Aplikasi Vol 22, No 5 (2019): Volume 22 Issue 5 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Jernang resin is secretion of jernang rattan (Daemonorops draco, Arecaceae family) fruits which is endemic in Southeast Asia. This resin has various biological activities and empirically used as wound healing, headache medicines, and fever remedies by Anak Dalam ethnic group from Jambi. This study was performed to evaluate the antioxidant activity of nonpolar fraction of D. draco resin which collected from Jambi Province, Sumatera, Indonesia. Resin was extracted with n-hexane, ethyl acetate, and methanol respectively. The antioxidant properties of the extracts were then evaluated using 1,1-diphenyl-2picryl-hidrazyl radical scavenging assay. The most active extract was further fractionated using n-hexane and methanol and separated using column chromatography and preparative thin layer chromatography. Separation of the extract was conducted through antioxidant assay-guided fractionation. Characterization of the active fraction was carried out by infrared spectroscopy. The result shows that ethyl acetate extract provides higher antioxidant activity (IC50 = 27.61 µg/mL) compare to methanol and n-hexane extracts. N-hexane fraction of ethyl acetate extract used for further separation using column and preparative thin layer chromatography due to its antioxidant activity. Separation using column chromatography resulting in 9 fractions (F.1-9). Fraction F.5 provide high antioxidant activity (IC50 = 17.27 µg/mL) and further separated using preparative thin layer chromatography resulting two fractions with lower antioxidant activity F.5.1 (IC50 = 85.18 µg/mL) and F.5.2 (IC50 = 34.94 µg/mL). Characterization of fraction F.5.2 using infrared spectroscopy showed that component in fraction F.5.2 contains NH-substituted benzene.

Kajian Metode Elektrofotokatalisis, Elektrolisis dan Fotokatalisis pada Dekolorisasi Larutan Zat Warna Remazol Brilliant Orange 3R yang Mengandung Ion Logam Cu2+ Arthias Cita Febriyani; Rum Hastuti; Abdul Haris
Jurnal Kimia Sains dan Aplikasi Vol 15, No 1 (2012): Volume 15 Issue 1 Year 2012
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Limbah cair industri tekstil mengandung zat warna dan logam berat. Remazol brilliant orange 3R dan logam tembaga merupakan zat warna dan logam berat yang banyak terdapat pada limbah tekstil. Pembuangan limbah cair tekstil tanpa pengolahan limbah terlebih dahulu akan menyebabkan pencemaran lingkungan perairan. Metode elektrolisis, fotokatalisis dan elektrofotokatalisis merupakan metode yang dapat digunakan dalam penanganan limbah tekstil. Pada penelitian ini akan dibandingkan ketiga metode tersebut untuk dekolorisasi larutan zat warna remazol brilliant orange 3R yang mengandung ion logam Cu2+ serta mengetahui pengaruh keberadaan ion logam Cu2+ dan penyinaran lampu UV-C terhadap dekolorisasi zat warna remazol brilliant orange 3R. Hasil penelitian menunjukkan bahwa metode elektrofotokatalisis merupakan metode yang paling efektif karena mampu mendekolorisasi remazol brilliant orange 3R hingga 98,43% dan menurunkan konsentrasi ion logam Cu2+ hingga 99,35%. Keberadaan ion logam Cu2+ dan penyinaran lampu UV-C meningkatkan dekolorisasi zat warna remazol brilliant orange 3R.

Hidrasi Metilisoeugenol dengan Metode Oksimerkurasi-Demerkurasi Ngadiwiyana, Ngadiwiyana
Jurnal Kimia Sains dan Aplikasi Vol 3, No 1 (2000): Volume 3 Issue 1 Year 2000
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Telah dilakukan hidrasi metilisoeugenol dengan metode oksimerkurasi-demerkurasi. Metilisoeugenol merupakan hasil isomerisasi metileugenol. Reaksi oksimerkurasi-demerkurasi dilakukan pada suhu 25Â°C. Pada tahap oksimerkurasi digunakan campuran merkuri asetat dengan pelarut THF + H2O dengan perbandingan volume (1:1), sedangkan pada tahap demerkurasi digunakan pereduksi NaBH4, dalam NaOH. Hasil reaksi berupa cairan berwama putih. Kemurnian hasil ditentukan dengan kromatografi gas, dihasilkan senyawa l-(3,4-dimetoksifenil)-1-propanol dengan kemurnian 19,20%. Analisis struktur dilakukan dengan spektrofotometer IR dan kromatografi gas-spektrometer massa.

Prediction of Pharmacokinetics Parameter and Molecular Docking Study of Antidiabetic Compounds from Syzygium polyanthum and Syzygium cumini Widia Wati; Gunawan Pamudji Widodo; Rina Herowati
Jurnal Kimia Sains dan Aplikasi Vol 23, No 6 (2020): Volume 23 Issue 6 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Syzygium polyanthum leaf extract and Syzygium cumini herbs extract have been reported to have antidiabetic activity. This study aimed to predict the molecular target of chemical constituents of S. polyanthum and S. cumini as well as study their interactions with various macromolecular targets of an antidiabetic agent. Molecular docking of all ligands was studied using the Autodock Vina program in PyRx, and the results are presented as binding affinity values (kcal/mol) of ligand against the protein. PyMOL is used to visualize the 3D molecular of docked conformation and ligand-protein interactions. The predicted pharmacokinetic parameters were obtained by SwissADME. Delphinidin-3-gentiobioside and isoquercitrin are predicted to have good interaction with DPP-4 and α-glucosidase, respectively. However, they are predicted to have poor absorption properties. Quercetin and kaempferol are predicted to have good interaction with PTP1B and glucokinase and showed good pharmacokinetic properties.

Synthesis of Metal–Curcumin Complex Compounds (M = Na⁺, Mg²⁺, Cu²⁺) Peni Peni; Risya Sasri; Imelda Hotmarisi Silalahi
Jurnal Kimia Sains dan Aplikasi Vol 23, No 3 (2020): Volume 23 Issue 3 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Curcumin complex compound, MLn (L = curcumin; M = Na+, Mg2+, Cu2+) has been synthesized from the reaction between curcumin and metal precursors (NaCl, MgSO4.7H2O, CuCl2.2H2O) in ethanol under reflux conditions. Synthesis takes place through the reaction between the metal ions Na+, Mg2+, or Cu2+ as the central atom and curcumin as the ligand. Curcumin has been consumed after the reaction lasts for four hours, shown by thin-layer chromatography in which a new spot appears at higher Rf as the spot of curcumin disappears in the reaction mixture. Compared with the spectrum of curcumin, the FTIR spectra of the complexes show changes in the absorption bands and shifts of wave numbers particularly in absorption bands of phenolic –OH and C=O enol groups which strongly indicates the coordination of metal ions with the curcumin ligand which is proposed to be in β–1,3 diketone system. Also, the FTIR spectra of the reaction product showed typical absorption bands for the metal-oxygen group, M–O, at 524 cm–1, 670 cm–1 and 470 cm–1 in Na+–curcumin, Mg2+–curcumin and Cu2+–curcumin, respectively.

Pengaruh Pasta ZnO dengan Penambahan Dish Detergent dan PVA pada Kaca Konduktif terhadap Efisiensi Dye Sensitized Solar Cell dari Ekstrak Bunga Rosela (Hibiscus sabdariffa L.) Sri Handayani; Gunawan Gunawan; Abdul Haris
Jurnal Kimia Sains dan Aplikasi Vol 16, No 3 (2013): Volume 16 Issue 3 Year 2013
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Telah dilakukan penelitian tentang pembuatan pasta ZnO dengan penambahan dish detergent dan PVA pada kaca konduktif terhadap efisiensi dye sensitized solar cell (DSSC) dari ekstrak bunga rosela (Hibiscus sabdariffa L.). Penelitian ini bertujuan untuk menghasilkan lapisan ZnO nanopori dan untuk mengetahui pengaruh pembuatan pasta ZnO dengan penambahan dish detergent dan PVA terhadap efisiensi dye sensitized solar cell (DSSC). Penelitian dilakukan dengan pembuatan elektroda kerja (working electrode) dari lapis tipis ZnOyang mengadsorb antosianin bunga rosela, elektroda perlawanan (counter electrode) dari karbon dan elektrolit I-/I3- sebagai pasangan redoks. Karakterisasi DSSC meliputi serapan panjang gelombang zat pewarna bunga rosella, kristalinitas ZnO, struktur morfologi lapis ZnO dan karakteristik ikatan antara ZnO dengan senyawa antosianin. Nilai efisiensi DSSC ditentukan dengan metode kurva arus dan tegangan. Hasil penelitian dapat diperoleh lapisan ZnO berukuran nanopori sebesar 71,43 nm, dan efisiensi DSSC yang diperoleh untuk ZnO dengan dish detergent sebesar 2,964 x 10-4% sedangkan ZnO dengan PVA diperoleh efisiensi sebesar 0,712 x 10-4%.

Adsorpsi Alkil Benzena Sulfonat Menggunakan Zeolit Termodifikasi Cetyltrimethylammonium Anis Komariah; Sriatun Sriatun; Pardoyo Pardoyo
Jurnal Kimia Sains dan Aplikasi Vol 20, No 1 (2017): Volume 20 Issue 1 Year 2017
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Dalam penelitian ini dilakukan modifikasi zeolit alam teraktivasi NH4Cl (H-Zeolit) dengan surfaktan CTAB (Cetyltrimethylammonium Bromide) berbagai konsentrasi yaitu sebesar 0,25 mM (ZMS-1), 1 mM (ZMS-2), dan 100 mM (ZMS-3) sebagai adsorben senyawa ABS (Alkil Benzena Sulfonat). Karakterisasi dilakukan terhadap H-Zeolit dan ZMS menggunakan spektrofotometer FTIR. Parameter utama dalam penelitian ini adalah variasi konsentrasi ABS (50, 75, dan 100 ppm) dan waktu kontak (15, 30, 45, 60, 75, dan 90 menit). Konsentrasi ABS yang teradsorpsi dianalisis dengan spektrofotometer UV-Vis menggunakan metode MBAS (Methylene Blue Active Substance). Hasil spektra FTIR zeolit alam termodifikasi surfaktan (ZMS) menunjukkan puncak pada bilangan gelombang 2931,80 cm-1; 2854,65 cm-1 dan 1404,18 cm-1 yang mengindikasikan keberadaan gugus CTAB pada zeolit. Konsentrasi maksimum dan waktu optimum ABS yang dapat dijerap oleh per 0,1 gram ZMS adalah 50 ppm dalam 25 mL pada waktu 60 menit dengan persen adsorpsi sebesar 84,04% untuk H-Zeolit ; 96,42% untuk ZMS-1; 96,48% untuk ZMS-2; dan 97,29% untuk ZMS-3. Performa ZMS cenderung meningkat dengan konsentrasi CTAB pada zeolit.

Cytotoxicity of the Most Active Fraction of the Seeds of Swietenia macrophylla using Human Breast Cancer MCF-7 Cells Dudi Tohir; Fitriah Sari; Irma Herawati Suparto
Jurnal Kimia Sains dan Aplikasi Vol 23, No 7 (2020): Volume 23 Issue 7 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Ethyl acetate fraction from Swietenia macrophylla was reported to have toxicity against the larvae of Artemia salina shrimp larvae. However, there areno reports aboutS. macrophylla, which can inhibit human breast cancer cells MCF-7. Therefore, this study aims to evaluate S. macrophyllaextract's cytotoxicity using human breast cancer MCF-7 cells assay, followed by confirmation of its toxicity using brine shrimp lethality assay. The most active fraction obtained from the ethyl acetate extract of S. macrophylla showed 76.49% inhibition at 50 µg/mL (IC50=34.11 µg/mL). At the same time, the most active fraction may contain a mixture of limonoid compounds after LCMS analysis. The most active fraction obtained from ethyl acetate extract of S. macrophylla showed 76.49%

Sintesis Mikropartikel Kitosan dengan Proses Gelasi Ionik sebagai Adsorben Logam Cd(II) Heru Witoyo Putra; Khabibi Khabibi
Jurnal Kimia Sains dan Aplikasi Vol 17, No 3 (2014): Volume 17 Issue 3 Year 2014
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Sintesis Mikropartikel Kitosan dengan Proses Gelasi Ionik Sebagai Adsorben Logam Cd(II) telah dilakukan. Metode yang digunakan ialah gelasi ionik, yaitu pembentukan mikropartikel kitosan berdasarkan interaksi ionik antara gugus amina positif pada kitosan dengan gugus negatif polianion tripolifosfat. Mikropartikel kitosan yang terbentuk kemudian dikarakterisasi menggunakan FTIR, BET dan SEM. Kondisi optimum adsorpsi ditentukan melalui variasi pH 3-8, variasi waktu kontak 15-75 menit dan variasi konsentrasi ion logam Cd(II) 20-100 ppm. Kemudian hasilnya diinterpretasikan terhadap persamaan isoterm Langmuir untuk menentukan kapasitas adsorpsi maksimum ion Cd(II) oleh mikropartikel kitosan. Hasil karakterisasi menunjukkan bahwa ukuran partikel mikropartikel kitosan dari larutan kitosan 1% dan 2% masing-masing sebesar 15-115 µm dan 30-220 µm, serta ukuran rata-rata pori 3,293 nm dan 2,679 nm. Berdasarkan hasil analisis, keadaan optimum adsorpsi mikropartikel kitosan dari larutan kitosan 1% dan 2% terhadap ion Cd(II) adalah pada pH 5 dengan waktu kontak 45 menit dan 60 menit dan diperoleh kapasitas adsorpsi maksimum sebesar 28,01 mg/g dan 29,94 mg/g.

Identifikasi Komposisi Asam Lemak dari Minyak Benih Turi (Sesbania grandiflora (L) Pers) Ismiyarto, Ismiyarto; Halim, Siti Anisah; Wibawa, Pratama Jujur
Jurnal Kimia Sains dan Aplikasi Vol 9, No 1 (2006): Volume 9 Issue 1 Year 2006
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Penelitian untuk mengetahui komposisi asam lemak pada minyak benih Turi (Sesbania grandiflora (L) Pers) telah dilaksanakan. Pada langkah pertama adalah untuk menggunakannya sebagai zat standar biodiesel. Bubuk kering dari benih Turi diekstraksi secara berkelanjutan dengan soxhlet selama 7 jam pada suhu 60-70oC dengan pelarut n-heksana. Rendemen produk minyak benih Turi adalah 9,79% w/w dari berat benih Turi. Asam lemak trigliserida dianalisis dengan GC-MS yang dioperasikan pada 150-290oC dengan kenaikan suhu 10oC/5 menit, fasa mobil adalah gas helium yang dijalankan pada 10 Kpa, keperluan Fasa stasioner adalah CP-SIL 5 CB panjangnya 25 m dan detektor pada GC-MS adalah FID. Berdasarkan pada puncak GC-MS yang dicocokkan dengan masing-masing database fragmentasi puncak dapat disimpulkan bahwa asam lemak dari trigliserida adalah asam palmitik (14,25%), asam linoleat (39,13%), asam elaidat (39.13%), asam stearat (13.97%) dan asam aracidat (39.13%) dengan berat molekular trigliserida pada minyak benih Turi adalah 872,769 g/mol dan berwujud cairan pada suhu-kamar dan berwarana hitam-kuning.

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