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NOOR HUBDRYAWATI
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jurnalkimiaunmul@gmail.com
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Jl.Barong Tongkok no.04 Kampus Gn.kelua Samarinda Kalimantan Timur
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INDONESIA
Jurnal Kimia Mulawarman
Published by Universitas Mulawarman
ISSN : 16935616     EISSN : 24769258     DOI : DOI: https://doi.org/10.30872/jkm
Core Subject : Science,
Chemistry
Journal of Kimia Mulawarman is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry, including educational chemistry and applied chemistry.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 10 Documents
 1 
Search results for , issue "Vol 15 No 2 (2018)" : 10 Documents clear
KUMARIN TERISOPRENILASI DAN ALKALOID INDOL DARI KULIT BATANG Zanthoxylum ovalifolium TUTCHER Mulyadi Tanjung
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.587

Abstract

Two isoprenylated coumarins, imperatorin (1), isopimpinelin (2) and one indol alkaloid compound, canthine-6-one (3) were isolated from the stem bark of Zanthoxylum ovalifolium Tutcher. Their structures were determined based on spectroscopic data such as UV, IR, MS and NMR. Imperatorin (1) showed high activity toward DPPH radical and isopimpinelin (2) and chantine-6-one (3) has moderate activity.
Aktivitas Antioksidan dan Antimalaria Senyawa Fenolik dari Daun Macaranga beccariana Merr. Eva Marliana; Chairul Saleh; Medi Hendra
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.611

Abstract

Macaranga beccariana Merr. is an endemic plant of Kalimantan which is no report yet about its biological activity and isolated compounds. Therefore, in order to know the potency of M. beccariana, determination of antioxidant and antimalarial activities along with isolation of bioactive compounds from this plant must be carried out. In this research, the leaves of M. beccariana was extracted using methanol to obtain methanol extract. Furthermore, the extract was separated and purified to obtain compound 1 and compound 2. Based on structure elucidation using spectrometer analysis including UV, 1H and 13C NMR, compounds 1 and 2 which belong to phenolics were identified as 4-hidroxybenzoic acid and 3,4-dihidroxybenzoic acid, respectively. Moreover, antioxidant activity using DPPH (2,2-diphenyl-1-picrylhydrazyl) and antimalarial activity towards Plasmodium falciparum strain 3D7 using Giemsa staining were performed. Rutine and chloroquine difosfat were used as positive controls for antioxidant and antimalarial, respectively. The results showed that the methanol extract of M. beccariana and its isolated compounds (1 and 2) are active for those activities. It can be concluded that the leaves of M. beccariana has good potency as antioxidant and antimalarial agents.
PENGARUH LAJU ALIR DALAM PROSES PENGEMASAN KOLOM KROMATOGRAFI PENUKAR ION Vino Soaduon Hamonangan Simanjuntak
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.588

Abstract

Resin DEAE Separose Fast Flow adalah salah satu resin yang digunakan dalam kromatografi penukar ion. Dalam aplikasi resin diinstruksikan penggunaan konstan laju alir dalam proses packing kolom sangat terbatas yaitu dengan ketentuan bed height (tinggi resin dalam kolom) 15 cm. Di sisi lain, pengguna resin tidak selalu menggunakan jumlah resin yang sama banyak dan jenis kolom yang berbeda. Sehingga, proses kemas pada kolom gelas kaca (SAC 100/500 mm) maka, diperlukan studi lebih lanjut untuk menentukan tinggi kolom. Penelitian ini menggunakan laju alir yang direkomendasikan dari pemasok dan juga menggunakan laju alir yang berada di bawah rekomendasi pemasok, karena semakin tinggi laju alir membuat hasil kemas pada kolom tidak efisien. Hasil penelitian menunjukkan bahwa laju alir yang baik adalah 150 mL/menit yang memberikan nilai asimetri 1,8 dan nilai HETP (angka lempeng teoritis) yang memenuhi criteria dibanding dengan menggunakan laju alir yang lainnya.
SINTESIS SELULOSA ASETAT DARI TANDAN KOSONG KELAPA SAWIT DAN SIFATNYA SEBAGAI MEMBRAN POLIMER ELEKTROLIT PADA BATERAI ION LITIUM Nurhadini Nurhadini; I Made Arcana
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.612

Abstract

Biodegradable polymer electrolyte utilization on lithium ion battery is increasingly considered to prevent any waste. This study was conducted to synthesis cellulose acetate from oil palm empty fruit bunch and its properties as polymer electrolyte membranes on lithium ion battery. This study was done by extracting cellulose from oil palm empty fruit bunch. That cellulose was acetylated become cellulose acetate and characterized its functional group. Further, polymer electrolyte was synthesized with composition 25/60/15(%b/b) (SAS/PEO/LiClO4). The properties of polymer electrolyte membranes were characterized by analysis thermal properties, ionic conductivity and mechanical properties. Based on functional group data, synthetic cellulose acetate had similar the main functional group with commercial cellulose acetate. Synthetic cellulose acetate contained 27% acetyl with 1,4 substitution degree. Analysis thermal properties showed that the decomposition of SAS/PEO/LiClO4 polymer electrolyte membranes was started above 260oC. The ionic conductivity 10,81 x 10-4 S/cm of these polymer electrolyte membranes was 10,81 x 10-4 S/cm. Analysis of mechanic properties were 0,05 MPa stress, 14,23 MPa elongation and 0,35 MPa Modulus Young. SAS/PEO/LiClO4 polymer electrolyte membranes had higher ionic conductivity than SAK/PEO/LiClO4 polymer electrolyte membranes. However, SAS/PEO/LiClO4 polymer electrolyte membranes had lower thermal and mechanic properties than SAK/PEO/LiClO4 polymer electrolyte membranes.
INKORPORASI VITAMIN E PFAD PADA CAMPURAN GALAKTOMANAN KOLANG-KALING (Arenga pinnata) DAN GUM ACASIA REZA ZULMI; Jamaran Kaban; Juliati Tarigan
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.608

Abstract

Incorporation of vitamin E from palm fatty acid distillate (PFAD) into matrix of mixed gum acacia and galactomannan from Arenga pinnata (kolang-kaling) (GAP) has been studied. Galactomannan extracted from Arenga pinnata was 4.7%. Incorporations were conducted using using 7 gram gum acacia (GA), 1.3 gram vitamin E from PFAD and GAP varied from 0.1 – 0.4 gram in 100 ml total volume. The thickness of the film occurred in the range of 0.600 – 0.780 mm. In the increment of GAP amount the viscosity and stability of film was increased. The best film obtained which most compatible and has viscosity similar with standard of ISO 9001 – 2008 and ISO 22000 – 2005 was from formula 3 contained 0.2 gram GAP. The oncentration of vitamin E determined using gas chromatography was 75.4501%. The composition of vitamin E was tocotrienol 74.41% and tocopherol 25.59%.
SINTESIS SURFAKTAN TURUNAN AMIDA YANG DIPEROLEH DARI REKASI METIL RISINOLEAT DAN ETILENDIAMINA Daniel Tarigan; Magdaleni Rahayu Agustina; Soerja Kosenarpadi
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.609

Abstract

Interesterification of castor oil with methanol using base catalyst gave mixture of fatty acid methyl esther (FAME) castor oil. Methyl risinoleate as major composition of methyl esther castor oil was subjected to column chromatography using petroleum ether:diethyl ether (19:1, v/v) as eluent, to give yield 73%. Amidation of methyl risinoleate with ethylendiamine under refluks condition using benzene as solvent for ± 12 hours and catalyst NaOCH3, gave 1,3–Dirisinoleil-Etilendiamida compound and 59% yield. The reactioned product 1,3–Dirisinoleil-Etilendiamida has been confirmed its structure using FT-IR spectroscopy, and Hidrofile Lipofile Balance (HLB) value was determined by titration method 12,56
PENENTUAN KADAR ASAM AMINO ESENSIAL (FENILALANIN, TREONIN, TIROSIN DAN VALIN) PADA TELUR PENYU DAN TELUR AYAM RAS Agnes Lebang; Saibun Sitorus; winni astuti
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.410

Abstract

Determination of amino acid essential’s content (phenylalanin, threonin, tyrosin and valine) on turtle eggs and chicken eggs. Turtle eggs and chicken eggs are a high animal protein source and easy to obtain. This research has been carried out by categorizing of turtle eggs and chicken eggs by size and continued analysis of water content by Methods of Gravimetry, analyzes protein content total by the Method of Kjeldahl and analysis of the levels of essential amino acids with Method of HPLC (High Performance Liquid Chromatography). In this study, the researcher found the water content in the mix (large, medium and small) is 73,1891% and mixture of chicken eggs of different size is 73,1820%. Results of total protein content with used Kjeldahl method mixture based on the size of turtle eggs is 9,3114% and mixture chicken eggs is 10,2691%. Results of the amino acid content with used HPLC (High Performance Liquid Chromatography) method on a mixture of turtle eggs is Phenylalanin 1,69%, Threonin 1,16%, Tyrosin 2,46% and Valine 1,46%. Mixture of chicken eggs is Phenylalanin 0,30%, Threonin 0,61%, Tyrosin 1,03% and Valine 0,55%
Identifikasi Potensi Jeruk Purut Sebagai Demulsifier Untuk Memisahkan Air Dari Emulsi Minyak di Lapangan Minyak Riau Tomi Erfando
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.604

Abstract

Emulsion stability is an indicator that needs to be controlled to prevent the degradation of petroleum quality. Emulsion breakdown is one of the mechanisms to separate the water phase from oil. It is transformed into a chemical compound that is expected to function as emulsion blocking or commonly known as a demulsifier. An organic demulsifier is one of the right ideas in preventing environmental pollution without diminishing its main function as an emulsion breaker. The bottle test method is one of the most commonly used methods in demulsification tests. Testing using this method is done by inserting the prepared emulsion into the bottle, then it will be placed into a waterbath under certain temperature conditions for several hours. This test will be done by looking at the demulsification that occurs every 30 minutes. From the testing of temperature, concentration, and effectiveness of the formulated formula, an optimal condition is obtained based on the highest demulsification efficiency. Based on the research, optimal condition of organic demulsifier formula is (3ml, 80˚C) with 7 ml demulsification efficiency. The results obtained from organic material formulations have not been able to increase the effectiveness of emulsion-breaking processes compared to commercial demulsifiers and basecase conditions (20 ml).
IMPREGNASI DAN KARAKTERISASI K-DEOILED SPENT BLEACHING EARTH (K-DSBE) DENGAN METODE BASAH Arif Dwiki Saputra; Noor Hindryawati; Daniel Daniel
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.504

Abstract

In this research, KOH has been impregnated on Deoiled Spent Bleaching Earth (DSBE) with wet method as a catayst. KOH was impregnated on DSBE of 40 % and 60 % (w/w), then characterized using X-Ray Flourescence (XRF), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), surface area test and alkalinity test. The XRF analysis results showed that potassium oxide composition increased after impregnation. The XRD analysis results show that DSBE belongs to the rectorite type of Na-montmorillonite, whereas the SEM analysis results indicate a morphological change in DSBE. K-DSBE catalysts 40 % and 60 % KOH impregnation have a basicity of 1.46 mmol/g and 1.55 mmol/g with a surface area of ​​23.81 m2/g and 23.56 m2/g.
SKRINING FITOKIMIA DAN POTENSI ANTIBAKTERI EKSTRAK ETANOL PUCUK IDING-IDING (Stenochlaena palustris) TERHADAP BAKTERI Staphylococcus aureus , Escherichia coli, dan Bacillus subtilis Occa Roanisca
JURNAL KIMIA MULAWARMAN Vol 15 No 2 (2018)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v15i2.610

Abstract

Stenochlaena palustris dikenal dengan nama lokal pucuk iding-iding bagi masyarakat Bangka Belitung. Pemanfaatan Stenochlaena palustris sebagai obat tradisional untuk mengobati bisul, penyakit kulit, dan penambah darah. Pada penelitian ini telah dikaji kandungan metabolit sekunder dan potensi antibakteri pada Stenochlaena palustris. Serbuk kering Stenochlaena palustris dimaserasi menggunakan etanol, dan aktivitas antibakteri ditentukan menggunakan metode difusi cakram terhadap bakteri Staphylococcus aureus , Escherichia coli, dan Bacillus subtilis. Berdasarkan hasil skrining fitokimia ditemukan flavonoid, alkaloid, saponin, dan fenol hidrokuinon pada ekstrak etanol Stenochlaena palustris. Hasil pengujian antibakteri didapatkan daya hambat ekstrak etanol Stenochlaena palustris tergolong sedang dalam menghambat pertumbuhan bakteri E. coli dan B. Subtilis pada konsentrasi 50 mg/mL dengan diameter zona bening masing-masing 5,28 mm dan 6,00 mm. Daya hambat terhadap pertumbuhan S. aureus pada konsentrasi 50 mg/mL dengan diameter zona bening sebesar 4,38 mg/mL tergolong lemah.

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