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All Journal VALENSI Jurnal Penelitian Saintek Jurnal Natur Indonesia Alchemy : Journal of Chemistry Jurnal Ilmu Kimia Universitas Brawijaya Natural B The Journal of Pure and Applied Chemistry Research SEMIRATA 2015 Jurnal Fisika FLUX ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Jurnal Otomasi Kontrol dan Instrumentasi Chemistry Indonesian Journal of Chemical Research Indonesian Journal of Chemical Analysis (IJCA) Molekul: Jurnal Ilmiah Kimia Jurnal Jejaring Matematika dan Sains Bubungan Tinggi: Jurnal Pengabdian Masyarakat Rengganis Jurnal Pengabdian Masyarakat Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Makara Journal of Science

Ani Mulyasuryani

Universitas Brawijaya

Author-ID : 324761

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Cu (II) Recovery with Solid Phase Extraction Technique Using Silica Adsorbent from Rice Husk ash - Chitosan Nanang Tri Widodo; Ani Mulyasuryani; Akhmad Sabarudin
Natural B, Journal of Health and Environmental Sciences Vol 2, No 4 (2014)
Publisher : Natural B, Journal of Health and Environmental Sciences

Copper compounds are widely used in modern industry. Many of these compounds are dumped into the surrounding environment. Copper is toxic and able to cause some diseases. The aim of this study is to create solid phase from natural material that applied to the solid phase extraction method as an alternative method to decrease the level of copper from water bodies and able to preconcentrate Cu2+ ions, reaching the detectable level. Silica from rice husk ash modified with chitosan result in an adsorbent that can improve the adsorption of Cu2+. Interaction of Cu2+ with solid phase silica–chitosan is based on data of Fourier Transform Infrared (FTIR), Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM). The percentage recovery of Cu2+ each the Cu2+ concentration of 0.05, 0.1 and 0.2 ppm is 55.32%, 54.35% and 71.94%. The adsorbent has ability to adsorb Cu2+ is 100%.

Adsorption of Cadmium By Silica Chitosan Moftah Ali; Ani Mulyasuryani; Akhmad Sabarudin
The Journal of Pure and Applied Chemistry Research Vol 2, No 2 (2013)
Publisher : Chemistry Department, The University of Brawijaya

The adsorption process depends on initial concentration of Cd2+ and ratio of chitosan in adsorbent. The present study deals with the competitive adsorption of Cd2+ ion onto silica graft with chitosan. Batch adsorption experiments were performed at five different initial Cd2+ concentrations (5, 10, 15, 20 and 25 ppm), on five different proportion from silica to chitosan (100%, 95%, 85%, 75% and 65%) as adsorbent at pH 5. In the recovery process, the high recovery at 0.5 mg and observed the recovery decrease with increasing the initial concentration of Cd2+, and the low recovery at 0.25 mg from Cd2+. In this study, the adsorption capacity of Cd2+ in regard to the ratio of silica and chitosan hybrid adsorbents are examined in detail. The aim of this study to explore effects of initial concentrations of Cd2+, and the ratio of silica to chitosan on the adsorption and recovery of Cd2+.

Membranes of Nata de coco-nanoparticles Fe3O4 For Diazinon Sensors Didik Pramana; Ani Mulyasuryani; Rachmat Triandi Tjahjanto
The Journal of Pure and Applied Chemistry Research Vol 7, No 3 (2018): Edition September-December 2018
Publisher : Chemistry Department, The University of Brawijaya

Development of diazinon sensors using mixed membranes of nata de coco and Fe3O4 nanoparticles on the SPCE (screen printed carbon electrode) surface has been carried out potentiometrically. The design of the sensor begins with the optimization of Fe3O4 nanoparticles added to the membranes of 50%, 67% and 75% while pH optimization using pH 4-5 acetate buffer and phosphate buffer pH 6-7. The diazinon sensor of the result has been tested at range concentration of 10-12 - 10-5mol.L-1. The results showed that the best sensor performance was 67% Fe3O4 nanoparticles and pH 5. The Nernst factor was 34.5 mV / decade, the detection limit value of 1,3 x 10-9mol.L-1 in the range concentration of 10-11 - 5x10-8 molL-1 with a response time of 140 seconds.

Pengembangan instrumen berbasis konduktivitas untuk mendeteksi cemaran pangan dalam produk pertanian Ani Mulyasuryani; Akhmad Zainuri
Jurnal Otomasi Kontrol dan Instrumentasi Vol 8 No 2 (2016): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2016.8.2.9

Salah satu cemaran pangan dalam produk pertanian adalah residu pestisida. Instrumen untuk mendeteksi kadar residu pestisida dapat dikembangkan dengan mengukur konduktivitas pestisida yang dihidrolisis secara enzimatis. Enzim diamobilkan pada suatu elektroda dalam sel konduktivitas, sehingga dapat dihasilkan konduktivitas larutan secara langsung. Berdasarkan hubungan linier antara konsentrasi pestisida dengan konduktivitas dapat dibuat instrumen yang menghasilkan data dalam satuan konsentrasi. Pestisida yang diuji adalah diazinon, malathion, profenofos dan klorpirifos. Variabel kinerja instrumen adalah ukuran elektroda, pH larutan uji, dan voltase. Kepekaan maksimum dihasilkan pada elektroda ukuran 1x5 mm2, pH larutan 8,5 dan voltase 100 mV. Instrumen ini dapat mengukur kadar pestisida pada kisaran 0 "“ 1000 ppb, dengan akurasi 86-100 %.

PENENTUAN UREA DALAM SERUM DARAH DENGAN BIOSENSOR KONDUKTOMETRI Screen Printed Carbon Electrode (SPCE) – NATA DE COCO Sendy Kurniawan; Dian Nur Fajariati; Helmi Auliyah Istiqomah; Oki Mandalia Antasari; Ani Mulyasuryani
Molekul Vol 10, No 2 (2015)
Publisher : Universitas Jenderal Soedirman

Urea merupakan hasil samping degradasi protein pada serum normal berkisar 10,7 sampai 42,8 mg/dL. Biosensor konduktometri untuk penentuan urea dalam serum darah didasarkan pada reaksi hidrolisis urea oleh urease menghasilkan amonia (NH3) dan karbon dioksida (CO2) yang terionisasi dalam air. Pada penelitian ini, kondisi optimum dari massa urease, ketebalan membran nata de coco, dan pH larutan urea dipelajari untuk menentukan kinerja biosensor ketika biosensor diaplikasikan untuk sampel serum darah. Biosensor ini dibuat dari SPCE (Screen Printed Carbon Electrode) yang dilapisi nata de coco teramobil urease. Pengamatan kinerja biosensor dilakukan pada pH (6; 7; 8; 9), massa urease (0,1; 0,5 ; 1,0; dan 1,5 µg), dan ketebalan membran (5; 10; 15 µm) pada kisaran konsentrasi urea yang 0 hingga 5 ppm dalam buffer fosfat 0,01 M pH 8 dan luas SPCE 5 mm2. Hasil penelitian menunjukkan bahwa kinerja optimum dihasilkan pada massa enzim 1 µg; ketebalan membran 5 µm; dan pH larutan 8, dengan kepekaan 14,8 µS/ppm, batas deteksi 0,035 ppm, dan kisaran konsentrasi urea 0,035 ppm hingga 0,4 ppm. Biosensor ini memiliki akurasi 73 – 87% saat diaplikasikan dalam sampel serum darah.

Modification of Electrode Using Arrowroot Starch Membrane for Uric Acid Determination Elvian Eka Krisnaniningrum; Ani Mulyasuryani; Hermin Sulistyarti
Molekul Vol 16, No 3 (2021)
Publisher : Universitas Jenderal Soedirman

Arrowroot starch membrane-modified glassy carbon electrode were constructed for the determination of uric acid. The membrane consist of arrowroot starch, polyvinyl alcohol, uric acid, and crosslinker. The crosslinker used was sodium tripolyphosphate, citric acid, and glutaraldehyde. Carbon material was added to increase the sensitivity. The composition of membrane influences the electrodes sensitivity. The best composition of arrowroot starch membrane is UA1 using 0.1% uric acid in membrane and STPP as crosslinker. The linearity concentration, sensitivity, and detection limit were 100-500 µM, 0.0509 A/M and 76 µM, respectively.

Modification of Screen Printed Carbon Electrode (SPCE) with Fe3O4 for the Determination of Nitrite (NO2-) in Squarewave Voltammetry Erica Marista Rosida; Ani Mulyasuryani; Rachmat Triandi Tjahjanto
Molekul Vol 12, No 2 (2017)
Publisher : Universitas Jenderal Soedirman

Nitrite is one of the food preservatives that the government permits, but on the use of over limits can cause endanger health, so it is necessary to control the content of nitrite in the food. Modification of electrodes on a screen printed carbon electrode (SPCE) with Fe3O4 has been successfully done for determination of nitrite. Modification of the electrode has been done by electrodeposition with cyclic voltammetry. Electrodeposition successfully performed with an electrolyte solution of FeCl3 in ethanol. Selection of the optimum drying temperature modified electrode obtained based on the respond of the solution of nitrite in Britton Robinson buffer pH 8. The result of the modification electrode used for the determination of nitrite with squarewave voltammetry method. Reaction between Fe3+ with nitrite a basis for determining nitric indirectly measured so that the peak current is the peak current of Fe3+ of about 0,55 V vs Ag/AgCl. The results showed nitrite measurements with this method has a detection limit of 1.3 x 10-8 M.

Chemical Sensor for Detection of Lead Levels in Herbal Medicine Ani Mulyasuryani; Yuniar Ponco Prananto; Elvian Eka Krisnaniningrum
Molekul Vol 16, No 2 (2021)
Publisher : Universitas Jenderal Soedirman

A new tube type Pb2+ sensor made from two types of mixtures, namely clay-PbI2 and chitosan-PbI2 were prepared. An electromotive force (EMF) with Ag/AgCl as the reference electrode was used as the output signal. The highest performance of the Pb2+ sensor from clay-PbI2 was obtained at Pb2+ solutions in HNO3 and pH 3 with sensor sensitivity of 20.67 mV/decade. The highest performance of the Pb2+ sensor from chitosan-PbI2 was obtained at Pb2+ solutions in demineralized water with sensor sensitivity of 32.49 mV / decade. Application of the two sensors on several commercial herbal samples resulted in an average recovery of 85.62% and 94.10% for sensor from chitosan-PbI2 and clay-PbI2, respectively

MODIFICATION OF SCREEN PRINTED CARBON ELECTRODEBY POLYPYRROLE FOR DETERMINATION OF HYDROQUINONE Khoirul Ngibad; Ani Mulyasuryani; Diah Mardiana
ALCHEMY Jurnal Penelitian Kimia Vol 12, No 1 (2016): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.12.1.938.36-49

Electropolymerization of polypyrrole for determination of hydroquinone on screen printed carbon electrode (SPCE) was performed using cyclic voltammetry. Electropolymerization of polypyrrole on SPCE begins with determining the optimum conditions of cyclic voltammetry (working potential, scan rate, number of cycles) and the conditions of solution (pyrrole and KCl concentrations).The working potential were varied at 0 – 0.8; 0 – 0.9; 0 – 1 V. The variation of scan rate were 50, 100, 150 mV/s and number of cycleswere 5, 10,15 cycles. The influence of pyrrole concentration was studied by providing variation of 5, 50, 100 mM. Meanwhile, the KCl concentration were at 0.1; 0.5; 1 M. The SPCE modified with polypyrrole was washed with deionized water and was dried at room temperature. The prepared polypyrrole was analyzed and based on the high anodic and cathodic peak current of the hydroquinone, it is confirmed that the preparation was succefully conducted. The optimum conditions on electropolymerization of polypyrrole areat the working potential of 0 – 0.9 V; the scan rate 100 of mV/s; the number of cyclesis 10, and at thepyrroleconcentration of 50 mM and KCl concentration of 0.5 M. SPCE modified polypyrrole can determine the hydroquinone at the concentration range of 5 – 100 μM with the sensitivity of 0.120 μA/Μm and the detection limit (S/N = 3) of 0.8 μM.

Sensing of Prostate Spesific Antigen by Differential Pulse Anodic Stripping Voltammetry of Gold Nanoparticle - Silver Enhanced Labels Rika Endara Safitri; Ani Mulyasuryani; Attasith Parnsubsakul; Patsamon Rijiravanich
ALCHEMY Jurnal Penelitian Kimia Vol 12, No 2 (2016): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.12.2.1724.128-141

Metode deteksi Antigen Spesifik Prostat (ASP) berdasarkan pemotongan peptide dengan menggunakan perak enhancer (AgEhn) pada nanopartikel emas (AuNP) sebagai penanda. ASP merupakan serin protease yang dihasilkan secara normal oleh sel jaringan prostat dan sel kanker prostat.ASP secara luas digunakan sebagai biomarker untuk kanker prostat.Aktivitas ASP dideteksi berdasarkan pemotongan peptida yang terikat pada dasar wellplate melalui interaksi biotin – avidin. Setelah proses pemotongan, peptida-SH yang terpotong akan terbuang dalam proses pembilasan, peptidayang terpotong pada dasar wellplate tidak dapat mengikat nanopartikel emas karena kehilangan gugus tiol (-SH) pada ujung peptida. Sisa peptide-SH yang tidak terpotong akan berikatan dengan AuNP, diikuti dengan reduksi secara autokatalitik pada larutan AgEhn menjadi Ag(s). Jumlah Ag yang terdapat pada permukaan AuNP ditentukan secara voltametri lucutan anodik (VLA) setelah mengoksidasi Ag (s) menjadi ion Ag+ menggunakan elektroda screen printed carbon (SPC). Optimasi dilakukan pada kondisi pengukuran dan kondisi immunoassay, sehingga penentuan PSA pada rentang 1–500 ng.mL-1 dihasilkan limit deteksi sebesar 152,204 ng.mL-1 dengan sensitivitas 0,003 μ A/ng.mL-1. Penentuan PSA dengan metode ini telah berhasil dilakukan, namun masih membutuhkan kajian lebih lanjut.

Co-Authors - Muhiroh Adam Wiryawan Adam Wiryawan Afifah Muhimmatul Mustaghfiroh Akhmad Sabarudin Akhmad Sabarudin Akhmad Sabarudin Akhmad Sabarudin Akhmad Sabarudin Alfita Safitri Alfita Savitri Anisa Resti Anna Roosdiana Arie Srihardyastutie Arumdati, Rara Aulia Asnaili Alfi Nurillah Attasith Parnsubsakul Ayu Rahayu Anggraeni Azizah, Alfi Bambang Ismuyanto Barlah Rumhayati Barlah Rumhayati Barlah Rumhayati Chandrawati Cahyani Danar Purwonugroho Dewi Umaningrum Dewi, Latifah Tribuana Diah Mardiana Diah Mardiana Diah Mardiana Dian Nur Fajariati Didik Pramana Dwi Oktavianti Eka Krisnaniningrum, Elvian Eka Novitasari Elvian Eka Krisnaniningrum Elvian Eka Krisnaniningrum Enggar Dwi Prasetya, Desta Erasti Pratiwi Erica Marista Rosida Hanandayu Widwiastuti Hasanuddin Hasanuddin Helmi Auliyah Istiqomah Hermin Sulistyarti Ika Diah Safitri Intan Frina Utamiyanti Isvani, Nuzulul Kurniawan Khairunnisa, Alda Khoirul Ngibad Krisnaniningrum, Elvian Eka Layta Dinira Layta Dinira Mardhatillah Mardhatillah Maria Dewi Astuti Moftah Ali Mokhammad W. Dahlan Muhammad Iqbal Fahmi Muhimmatul Mustaghfiroh, Afifah Mustaghfiroh, Afifah Muhimmatul Nanang Tri Widodo Nareswari, Aninda Nashiroh, Ni'matun Nongnoot Wongkaew Nuzulul Kurniawan Isvani Oki Mandalia Antasari Okky Anggraito Patsamon Rijiravanich Pazar Ramadani, Dhody Ponco Prananto, Yuniar Prasetya, Desta Enggar Dwi Prayoga, Indrajid Qonitah Fardiyah Qonitah Fardiyah Rachmat Triandi Tjahjanto Radna Nurmasari Rahmani, Indri Alidha Ramadani, Dhody Pazar Rika Endara Safitri Risti, Sandria Gita Rizki Sugiri Roosdiana, Anna Rossy Dwi Adhi Pratiwi Rumhayati, Barlah Sabarudin, Akhmad Safitri, Alfita Sasangka Prasetyawan Sasangka Prasetyawan Sendy Kurniawan Septi Fajar Raeni Setyorini, Dian Ayu Soebiantoro soebiantoro Suryantoro, Angga Sutrisno, Sutrisno Ulfa Andayani Ulfa Andayani Ulfa Andayani, Ulfa Unsania Haresmawati Yuniar Ponco Prananto ZAINUL ABIDIN Zainuri, Akhmad

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