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NOOR HUBDRYAWATI
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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 11 Documents
 1   2 
Search results for , issue "Vol 15 No 1 (2017)" : 11 Documents clear
Isolasi Dan Karakterisasi Lipase Dari Rebung Bambu Betung Dendrocalamusasper Agung Prasetyo; Winni Astuti; Chairul Saleh
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
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.v15i1.585

Abstract

This research was conducted to get the extract of rough lipase produced by bamboo shoots (Dendrocalamus asper). Lipase isolation from bamboo shoots was done by blending bamboo shoots to produce the crude extract of the enzyme. Lipase crude extracts that occurred at centrifugation at 12000 rpm for 30 minutes at 4°C. The crude extracts obtained were then tested using quantitative pH 7, temperature 30ºC and substrate 1% (v/v). Based on research there is activity of crude extract of lipase equal to 2,24 U/ml.
Pembuatan dan Karakterisasi Deoiled Spent Bleaching Clay (DSBC) terpilar TiO2 dengan penambahan surfaktan rarasaponin” Nauval Dwi Fadillah; Noor Hindryawati; Aman Sentosa Panggabean
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
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.v15i1.492

Abstract

Synthesis and characterization TiO2 pillared deoiled spent bleaching clay (DSBC) with rarasaponin as surfactant has been conducted. The activation of DSBC was performed by H2SO4 1N . Characterization had been conducted use X-Ray Diffraction, Flourescent Diffraction, Fourier Transform Infared Spectroscopy and Scaning Electron Microscopy. The results showed cristalinity of TiO2 pillared deoiled spent bleaching clay had increase until 72,5014 % after calcined 500 oC and expected there is Ti on layer based on SEM analysisSynthesis and characterization TiO2 pillared deoiled spent bleaching clay (DSBC) with rarasaponin as surfactant has been conducted. The activation of DSBC was performed by H2SO4 1N . Characterization had been conducted use X-Ray Diffraction, Flourescent Diffraction, Fourier Transform Infared Spectroscopy and Scaning Electron Microscopy. The results showed cristalinity of TiO2 pillared deoiled spent bleaching clay had increase until 72,5014 % after calcined 500 oC and expected there is Ti on layer based on SEM analysisSynthesis and characterization TiO2 pillared deoiled spent bleaching clay (DSBC) with rarasaponin as surfactant has been conducted. The activation of DSBC was performed by H2SO4 1N . Characterization had been conducted use X-Ray Diffraction, Flourescent Diffraction, Fourier Transform Infared Spectroscopy and Scaning Electron Microscopy. The results showed cristalinity of TiO2 pillared deoiled spent bleaching clay had increase until 72,5014 % after calcined 500 oC and expected there is Ti on layer based on SEM analysis.
Analisis Kadar Ion Pb2+ Pada Kangkung Darat (Ipomea Reptans Poir) Yang Diberi Air Lindi Dari Tpa Sampah Bukit Pinang Samarinda Hamsina Hamsina; Bohari Yusuf; Erwin Erwin
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
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.v15i1.545

Abstract

The Research to determine the levels of Pb ion on swamp cabbage (Ipomoea reptans Poir) where each of media cropping given variation of leachate volume from TPA Bukit Pinang Samarinda for every 10 kg of soil has been carried out. Swamp cabbage was analyzed in the roots, stems and leaves at the age of 2 weeks to 4 weeks. The levels of Pb2+ ion was determined by dry destruction method, then measured by atomic absorption spectrophotometry. Pb2+ ion was accumulated on the ground kale plants. The highest levels of Pb2+ ion was contained in the roots of ground kale plants on media cropping which added 1.5 L of leachate at the age of 3 weeks of 2.0642 mg / kg wet weight. The lowest level of Pb2+ ion was contained in the leaves of control plants at the age of 2 weeks that was 0.0177 mg / kg wet weight.
UJI FITOKIMIA DAN UJI TOKSISITAS EKSTRAK DAUN GAMAL (Gliricidia sepium) SEBAGAI INSEKTISIDA NABATI Ajeng Kartini; Daniel Daniel; Chairul Saleh
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
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.v15i1.399

Abstract

Research on phytochemical test and toxicity tests of leaf extract of Gliricidia (Gliricidia sepium) as an insecticide plant have been conducted.. Gliricidia leaves macerated dried samples using ethanol and fractionated using a solvent n-hexane and ethyl acetate. Phytochemical test showed that it contains alkaloids, steroids, triterpenoids, phenolic and flavonoid in total extract. N-hexane fraction containing steroids, triterpenoids and the phenolic. Ethyl acetate fraction containing steroids, triterpenoids, flavonoids, phenolic and saponin. Toxicity test method Brine Shrimp Lethality Test (BSLT) showed that the ethyl acetate fraction had the highest toxicity on shrimp larvae with LC50 values ​​of 49.29 ppm. Test Activity as an insecticide plant conducted in animal infestation of rice (Sitophylusorizae Leach) Value LC50 is determined using a regression line between log concentration and probit mortality, the LC50 obtained is 2.831%. Analysis of the content of chemical compounds in the ethyl acetate fraction from the leaves of Gliricidia produces 9 peak component compounds at mass spectra are shown from the results of GC-MS with 2 peaks compound dominant that serves as an insecticide plant them 2-(3H)-Benzofuranone, 3-methyl and dl-Limonene
Pengaruh Tembaga(II) dan Kadmium(II) Terhadap Persen Ekstraksi Merkuri(II) Menggunakan Emulsi Membran Cair Tipe W/O Bersurfaktan Ganda dengan Benzoil Aseton Sebagai Pembawa Kation Baharuddin Hamzah; HUsnia Mucthar; Sitti Rahmawati
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
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.v15i1.493

Abstract

Telah dilakukan penelitian tentang pengaruh tembaga(II) dan kadmium(II) terhadap persen ekstraksi merkuri(II) menggunakan emulsi membran cair tipe W/O bersurfaktan ganda dengan benzoil aseton sebagai pembawa kation. Kondisi optimum yang digunakan pada penelitian ini adalah sebagai berikut. Emulsi dibuat dengan menggunakan campuran surfaktan span-80 & span-20 = 2%, laju emulsifikasi = 2000 rpm selama 10 menit, rasio volume fasa membran/fasa internal = 1, konsentrasi HNO3 dalam fasa internal = 2M. Ekstraksi dilakukan terhadap larutan 30 ppm merkuri sebagai fasa eksternal dengan pH = 2 dan laju ekstraksi 300 rpm selama 10 menit serta rasio volume fasa eksternal/emulsi = 7, Hasil penelitian menunjukkan bahwa ekstraksi merkuri(II) dengan emulsi membran cair, relatif selektif terhadap tembaga(II) dan kadmium(II). Hasil penelitian juga menunjukkan bahwa keberadaan tembaga(II) dan kadmium(II) hingga 30 ppm, menurunkan persen ekstraksi merkuri(II) berturut-turut 12,12% dan 11,74%.
Potensi Antijamur Ekstrak Metanol Daun Mangrove Rhizopora Mucronata Terhadap Jamur Candida Albicans Dan Aspergillus Niger Usman Usman; Vega Julia Putri Adi
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
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.v15i1.583

Abstract

Candida Albicans and Aspergillus Niger are some of the infectious fungi. Empirically bark, flower, root and mangrove leaves Rhizophora mucronata can be a hepatitis drug. This study aims to determine the antifungal potential of methanol extract of Rhizophora mucronata leaves to Candida Albicans and Aspergillus Niger fungus. Chemical test results that have been done previously are alkaloids, Flavanoid , triterpenoids, saponins, tannins and hydroquinone phenols. The antifungal test was performed by agar diffusion method on Potatos Dextrose Agar (PDA) medium and paper disc.Paper disc soaked in methanolic extract of Rhizophora mucronatapada leaf concentration 1000 ppm, 800 ppm, 600 ppm, 400 ppm and 200 ppm. The positive control solution used ketokenazole drug and negative control using aquades with incubation period of 3 x 24 hours. The results did not prove that Rhizophora mucronata leaf methanol extract was effective to inhibit antifungal activity against Candida Albicans and Aspergillus Niger fungi.
Pengaruh Suhu Dan Lama Pengeringan Terhadap Sifat Kimia Dan Organoleptik Sale Pisang Kapas (Musa Comiculata) Marwati Marwati; Yuliani Yuliani; Yulian Andriyani; Mentari Mentari
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
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.v15i1.494

Abstract

Banana “kapas” is an original banana cultivar from Samarinda, with the characteristics at the time of mature is yellow fruit skin color, flesh color yellowish white and has a sweet taste. During this time the banana kapas has not been utilized properly. Based on the characteristics possessed by banana kapas can be processed into the processed products sale banana. This study aims to determine the effect of temperature and drying time on the chemical properties of sale of banana kapas produced, the level of panelist reception at organoleptic test and to get the time and temperature of the dryer that produces a quality banana sale based on chemical properties and organoleptic. The results showed that the temperature and duration of the dryer and its interactions had the significant effect on water content, ash content, vitamin C and reducing sugar content. Treatment with temperature 75oC and 21 hours drying time gave the best result with water content, ash content, vitamin C and reducing sugar are 32.80%, 1.13%, 60.65 mg/g and 16.08% respectively. For hedonic test, hedonic values of color, flavor, aroma and texture is like the hedonic quality of brown, sweet taste, rather banana flavored and hard texture.
Isolation Of Antioxidant Compounds Of N-Hexane Extract Of Nutmeg (Myristica Fragrans Houtt) Leaves Binawati Ginting; Siti Hadijah; Hira Helwati
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
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.v15i1.584

Abstract

The isolation of antioxidant active compounds from n-hexane extract of nutmeg leaves (Myristica fragrans Houtt) with dipphenylpicrylhydrazyl (DPPH) has been carried out. n-Hexane extract of nutmeg leaves (0.35%) was obtained by partitioning of methanol extract (535.7 g) using n-hexane solvent. Isolation of active compound of n-hexane extract with gravitational column chromatography gradient elution of n-hexane : ethyl acetate with ratio (9 : 1) – (7 : 3) obtained 7 mixed fraction of MFHD1 - MFHD 7. MFHD 2 fraction further isolated obtained MFHD 2.1. The nutmeg n-hexane extracts and their fractions showed strong antioxidant activity with IC50 values ​​<100 ppm except MFHD 6 fraction showed for IC50 values of 114.95 ppm. The most potent antioxidant activity in MFHD 4 fraction with IC50 value of 0.729 ppm (compared with vitamin C value of IC50 7,875 ppm as positive control). The GC-MS analysis of the MFHA 2.1 fraction shows the presence of sitostenone and eucalyptol compounds, both of which have been reported to have been isolated from several different plants and have antioxidant activity.
Penentuan Total Fenolik Dan Aktivitas Antioksidan Ekstrak Etanolik Daun Samama (Anthocephalus Macrophylus) Asal Ternate, Maluku Utara Khadijah Khadijah; Ahmad Muchsin Jayali; Sudir Umar; Iin Sasmita
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
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.v15i1.495

Abstract

Penelitian ini dilakukan untuk mengetahui kandungan total fenolik dan aktivitas antioksidan pada tanaman Samama atau Jabon Merah (Anthocephallus macrophyllus) asal Ternate Maluku Utara, serta menentukan hubungan antara kandungan total fenolik dengan aktivitas antioksidannya. Ekstrak etanol diperoleh dengan cara maserasi daun Samama yang telah dikeringkan dan dipisahkan berdasarkan umur daun (muda dan tua). Penentuan metabolit sekunder ekstrak dilakukan dengan skriining fitokimia yang menunjukkan adanya senyawa alkaloid, fenolik, steroid, dan saponin. Total fenolik ekstrak ditentukan dengan metode Folin-Ciocalteu diperoleh kadar total fenolik sebesar 119,68 mgGAE/g untuk daun muda dan 210,22 mgGAE/g untuk daun tua. Aktivitas antioksidan dianalisis dengan metode DPPH diperoleh nilai IC50 80.34 µg/mL pada daun muda, dan 43.49 µg/mL pada daun tua samama. Kandungan total fenolik ekstrak daun samama dan nilai IC50-nya menunjukkan hubungan linier y = -2,4647x + 317,22 dengan nilai determinasi R2 = 0.9996
Sintesis Silika Mesopori Sba-15 Dari Abu Daun Jagung (Zea Mays L) Nasri Nasri; R R Dirgarini J. N Subagyono; Rahmat Gunawan
JURNAL KIMIA MULAWARMAN Vol 15 No 1 (2017)
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.v15i1.524

Abstract

The synthesis and characterization of mesoporous silica Santa Barbara Acid-15 (SBA-15) from the ash of corn have been done. SBA-15 was synthesised using the surfactant template method. SBA-15 from corn leaves ash has a surface area of 592 m2 / gram, pore volume of 0.99 cm3 / gram and pore diameter of 3.95 nm with pore size ranging from 4.9 nm - 7.1 nm. The SAXS pattern of the bio-SBA-15 showed three typical peaks of SBA-15 with miller indices [100], [110] and [200]. In the FTIR spectrum of SBA-15, peaks from Si-O-Si, Si-OH and H-O-H from water were observed.

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