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All Journal Jurnal Kimia Riset Indonesian Journal of Chemistry Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Jurnal Abdi: Media Pengabdian Kepada Masyarakat Journal of halal product and research (JHPR) Bubungan Tinggi: Jurnal Pengabdian Masyarakat J-REMI : Jurnal Rekam Medik dan Informasi Kesehatan
Siti Wafiroh
Departemen Kimia, Fakultas Sains Dan Teknologi, Universitas Airlangga
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Dentistry Economics, Econometrics & Finance Education Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Medicine & Pharmacology Public Health Social Sciences Veterinary Other

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PEMBUATAN DAN KARAKTERISASI MEMBRAN KOMPOSIT KITOSAN-SODIUM ALGINAT TERFOSFORILASI SEBAGAI PROTON EXCHANGE MEMBRANE FUEL CELL (PEMFC) Siti Wafiroh; Suyanto Suyanto; Yuliana Yuliana
Jurnal Kimia Riset Vol. 1 No. 1 (2016): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (765.228 KB) | DOI: 10.20473/jkr.v1i1.2436

Abstract

AbstrakDi era globalisasi ini, kebutuhan bahan bakar fosil semakin meningkat dan ketersediannya semakin menipis. Oleh karena itu, dibutuhkan bahan bakar alternatif seperti Proton Exchange Membrane Fuel Cell (PEMFC). Tujuan dari penelitian ini adalah membuat dan mengkarakterisasi membran komposit kitosan-sodium alginat dari rumput laut coklat (Sargassum sp.) terfosforilasi sebagai Proton Exchange Membrane Fuel Cell (PEMFC). PEM dibuat dengan 4 variasi perbandingan konsentrasi antara kitosan dengan sodium alginat 8:0, 8:1, 8:2, dan 8:4 (b/b). Membran komposit kitosan-sodium alginat difosforilasi dengan STPP 2N. Karakterisasi PEM meliputi: uji tarik, swelling air, kapasitas penukar ion, FTIR, SEM, permeabilitas metanol, dan konduktivitas proton. Berdasarkan hasil analisis tersebut, membran yang optimal adalah perbandingan 8:1 (b/b) dengan nilai modulus young sebesar 0,0901 kN/cm2, swelling air sebesar 19,14 %, permeabilitas metanol sebesar 72,7 x 10-7, dan konduktivitas proton sebesar 4,7 x 10-5 S/cm. Membran komposit kitosan-sodium alginat terfosforilasi memiliki kemampuan yang cukup baik untuk bisa diaplikasikan sebagai membran polimer elektrolit dalam PEMFC. Kata kunci: kitosan, sodium alginat, terfosforilasi, PEMFC  AbstractIn this globalization era, the needs of fossil fuel certainly increases, but its providence decreases. Therefore, we need alternative fuels such as Proton Exchange Membrane Fuel Cell (PEMFC). The purpose of this study is preparationand characterization of phosphorylated chitosan-sodium alginate composite membrane from brown seaweed (Sargassum sp.) as Proton Exchange Membrane Fuel Cell (PEMFC). PEM is produced with 4 variations of concentration ratio between chitosan and sodium alginate 8:0, 8:1, 8:2, and 8:4 (w/w). Chitosan-sodium alginate composite membrane phosphorylated with 2 N STPP. The characterization of PEM include: tensile test, water swelling, ion exchange capacity, FTIR, SEM, methanol permeability, and proton conductivity. Based on the analysis result, the optimal membrane is ratio of 8:1 (w/w) with the value of Young’s modulus about 0.0901 kN/cm2, water swelling at 19.14%, methanol permeability about 72.7 x 10-7, and proton conductivity about 4.7 x 10-5 S/cm. The phosphorylated chitosan-sodium alginate composite membrane has good potentials for the application of the polymer electrolyte membrane in PEMFC. Keywords: chitosan, sodium alginate, phosphorylated, PEMFC
PEMBUATAN DAN KARAKTERISASI MEMBRAN FOTOKATALITIK HOLLOW FIBER SELULOSA ASETAT-TiO2 UNTUK DEGRADASI REMAZOL RED 198 Mevitri Rahmiati; Siti Wafiroh; Pratiwi Pudjiastuti
Jurnal Kimia Riset Vol. 3 No. 1 (2018): Juni
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (788.548 KB) | DOI: 10.20473/jkr.v3i1.8238

Abstract

Pengolahan limbah cairdapat menggunakan membran fotokatalitik yang dikompositkan dengan TiO2, salah satunya untuk degradasi limbah zat warna remazol red 198. Tujuan penelitian ini untuk pembuatan dan karakterisasi membran fotokatalitik hollow fiberselulosa asetat-TiO2untuk degradasi remazol red 198. Membran hollow fiberdibuat dengan metode inversi fasa menggunakan larutan dopedengan perbandingan komposisi selulosa asetat, aseton, dan formamida (22%, 51%, dan 27%). Kemudian TiO2ditambahkan dengan variasi konsentrasi 0,10%; 0,15%; 0,20%; 0,25%; 0,30% (b/b). Karakterisasi membran hollow fibermeliputi uji ketebalan, uji mekanik, uji kinerja dan efisiensi membran fotokatalitik hollow fiberuntuk degradasi remazol red 198. Dari hasil penelitian diperoleh membran hollow fiberselulosa asetat-TiO2yang optimum pada penambahan TiO2sebesar 0,25%. Membran hollow fiberselulosa asetat-TiO2yang optimum mempunyai sifat mekanik yaitu keteblannya 0,1433 mm nilai tegangan 502,74 kN/m2nilai regangan 0,133 dan modulus young4781,13 kN/m2. Kinerja membran fotokatalitik hollow fiber mempunyai nilai fluks 17,41 L/m2jam dan rejeksi 91,8%. Efisiensi degradasi membran selulosa asetat-TiO2dan TiO2terhadapremazol red 198murni sebesar 92,43% dan 95,56%. Sedangkan efisiensi degradasi membran selulosa asetat-TiO2dan TiO2terhadap limbah cair sebesar 81,77% dan 88,34%.
DETERMINAN KEAMANAN DAN KERAHASIAAN DOKUMEN REKAM MEDIS DI RUANG FILING RS X Gamasiano Alfiansyah; Rossalina Adi Wijayanti; Novita Nuraini; Selvia Juwita Swari; Siti Wafiroh
J-REMI : Jurnal Rekam Medik dan Informasi Kesehatan Vol 1 No 2 (2020): March
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/j-remi.v1i2.1961

Abstract

Rumah Sakit X menerapkan pengelolaan rekam medis sebagai penunjang medis. Dokumen rekam medis belum terjaga keamanan dan kerahasiaannya, dimana banyak petugas medis lain keluar masuk ruang filing, terdapat petugas makan dan minum diruang filing, penyimpanan masih di rak terbuka, dan petugas atau mahasiswa penelitian membocorkan isi rekam medis pasien.  Tujuan dari penelitian ini adalah mengetahui determinan keamanan dan kerahasiaan dokumen rekam medis di Rumah Sakit X. Jenis penelitian yang digunakan dalam penelitian ini adalah penelitian kualitatif menggunakan metode brainstorming dengan teknik wawancara, observasi dan dokumentasi. Hasil yang didapatkan dalam penelitian ini adalah faktor karakteristik petugas terdiri dari tingkat pendidikan terakhir petugas SMA, umur petugas 32-38 tahun, dan jenis kelamin laki-laki. Faktor psikologi meliputi attitude seperti petugas masih makan dan minum, petugas medis lain keluar masuk, membuka dokumen rekam medis tanpa izin dan terdapat pembocoran isi dokumen rekam medis. Faktor motivasi meliputi petugas merasa puas dan kompetitif dalam bekerja. Faktor organisasi meliputi penghargaan berupa pujian dan kepemimpinan belum dilakukan pemberian petunjuk pergantian dokumen rekam medis yang hilang. Hasil brainstorming yang menjadi penyebab utama yaitu tingkat pendidikan petugas yang masih rendah yaitu SMA. Saran yang diberikan meliputi pendidikan lanjutan atau pelatihan, memberi evaluasi secara rutin dan piagam kepada petugas. Kata kunci : keamanan, kerahasiaan, penyimpanan
ENHANCEMENT OF THE SENSITIVITY AND SELECTIVITY OF THE VOLTAMMETRIC SENSOR FOR URIC ACID USING MOLECULARLY IMPRINTED POLYMER Miratul Khasanah; Mudasir Mudasir; Agus Kuncaka; Eko Sugiharto; Ganden Supriyanto; Siti Wafiroh
Indonesian Journal of Chemistry Vol 10, No 3 (2010)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (288.315 KB) | DOI: 10.22146/ijc.21433

Abstract

The sensitivity and selectivity of voltammetric sensor for uric acid can be improved by modifying the working electrode using a polymer with a molecular template (molecularly imprinted polymer, MIP). Polymer and MIP was synthesized from methacrylic acid (MAA) as monomer, ethylene glycol dimethacrylic acid (EGDMA) as cross-linker, uric acid (UA) as template and the results were characterized by various methods. The poly-MAA formation was identified by a decrease in the intensity of infrared (IR) spectra at ~1540 cm-1 (C=C) and an increase at ~1700 cm-1 (C=O) compared to the IR spectra of the MAA and EGDMA. The SEM analysis showed that the cavity of polymer is small enough (~ 0.1 µm) and homogeneous. Establishment of MIP was carried out by extracting of the uric acid from the polymer network. The IR spectra of MIP exhibited the decrease in intensity at ~1700 cm-1 (C=O) compared to the non imprinted polymer (NIP). The data of BET analysis showed that polymer pore size increase slightly from 37.71 Å to 38.02 Å after the extraction process of uric acid from the polymer network. Its may be due to incomplete extraction of uric acid from the polymer network. Modifications of hanging mercury drop electrode using MIP made from MAA, EGDMA, and UA with a mole ratio of 1:3:1 produced a sensitive and selective voltammetric sensor for uric acid. The sensitivity obtained was 16.405 nA L/µg. The presence of ascorbic acid in equal concentration with uric acid decreased the current response of only 0.08%. Compared to HMDE electrode, the sensitivity and selectivity of the HMDE-MIP sensor enhanced about 100 and 700 times, respectively. The detection limit was found to be 5.94 x10-10 M.
Pelatihan Pembuatan Hand Sanitizer Menuju Desa Cerdas Kesehatan Di Desa Cangkir, Kecamatan Driyorejo, Kabupaten Gresik Qurrota A'yuni; Alfa Akustia Widati; Harsasi Setyawati; Atik Widiyanti; Purkan Purkan; Miratul Khasanah; Tokok Ardiarto; A. Budi Prasetyo; Aning Purwaningsih; Siti Wafiroh; Sri Sumarsih; Rico Ramadhan; Sofijan Hadi; Kariza Makanty; Ahlan Riwahyu Habibi; Aulianitha Salsabella
Bubungan Tinggi: Jurnal Pengabdian Masyarakat Vol 4, No 2 (2022)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/btjpm.v4i2.5253

Abstract

Hand sanitizer merupakan cairan atau gel pembersih tangan yang memiliki sifat sebagai antibakteri dalam menghambat hingga membunuh bakteri. Dengan demikian hand sanitizer lebih efektif dalam membasmi kuman. Berdasarkan penelitian The Centers for Disease Control and Prevention (CDC), hand sanitizer dengan kandungan alkohol minimal 60% dapat berfungsi sebagai antibakteri maupun antivirus. Hand sanitizer pernah menjadi barang langka di puncak pandemi pada tahun 2020, karena pembelian yang masif dari masyarakat Indonesia. Langkanya hand sanitizer di beberapa toko dan apotek membuat harganya menjadi mahal. Kegiatan Pengabdian Kepada Masyarakat ini bertujuan untuk meningkatkan pengetahuan akan pentingnya kesehatan dan kemungkinan penyebaran kuman terutama virus dan bakteri serta upaya untuk mengantisipasinya. Tujuan yang lain yaitu untuk meningkatkan keterampilan masyarakat dalam pembuatan hand sanitizer. Rangkaian kegiatan ini diselenggarakan di Desa Cangkir, Kecamatan Driyorejo, Kabupaten Gresik pada Bulan November-Desember 2021 secara luring dengan menerapkan protokol kesehatan dengan peserta Ibu-Ibu PKK dan Kader PKK. Kegiatan ini dilakukan melalui metode pendampingan dan demonstrasi dengan presentasi materi dan praktik langsung. Kegiatan ini memberikan dampak yang positif bagi masyarakat Desa Cangkir dalam menghadapi Pandemi Covid-19 saat ini. Hand sanitizer is a liquid or gel that has antibacterial properties to inhibit and kill bacteria. Thus, hand sanitizer is more effective in eradicating germs. Based on research from The Centers for Disease Control and Prevention (CDC), alcohol-based hand sanitizers that contain at least 60% alcohol can function as both antibacterial and antivirus. Hand sanitizer was once a scarce item at the height of the pandemic in 2020, due to massive purchases from the Indonesian people. The scarcity of hand sanitizers in some shops and pharmacies makes the price expensive. This Community Service activity aims to increase knowledge of the importance of health and the possibility of spreading germs, especially viruses and bacteria, and efforts to anticipate them. Another aim is to improve community skills in making hand sanitizers. This series of activities were held in Cangkir Village, Driyorejo District, Gresik Regency in November-December 2021 via offline by implementing health protocols with PKK women and PKK Cadres as participants. This activity is carried out through mentoring and demonstration methods with presentations and hands-on practice. This activity has a positive impact on the Cangkir Village community in dealing with the current Covid-19 Pandemic. 
SOSIALISASI MANFAAT DAN PEMBUATAN NATTO DAN SOY YOGURT MELALUI KEGIATAN WEBINAR DAN PRAKTEK Sri Sumarsih; Afaf Baktir; Fatiha Khairunnisa; Muji Harsini; Aning Purwaningsih; Siti Wafiroh; Hartati Hartati; Purkan Purkan; Sofijan Hadi
Jurnal ABDI: Media Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ja.v7n1.p103-107

Abstract

Natto and Soy Yogurt are fermented food products that are very beneficial for improving health. This community service activity aims to socialize the benefits and make them known to the wider community. However, community service activities during the Covid-19 pandemic cannot be carried out face-to-face and have activities with the community in large numbers. Therefore, this community service activity was carried out through webinar and practical activities. Online seminars was chosen so that the coverage was wider and more people could participate in the pandemic. Face-to-face and community activities are carried out with a limited number of participants, according to health protocols. The level of success, benefit and acceptance of the community from this community service activity is known from the responses of the participants during the activities. Based on the results of the assessment/ response of participants who were present virtually and those present at the location, In general it can be concluded that the PKM activity entitled "socializing the benefits and making natto and soy yogurt through webinars and practices" is going well, but better preparation is still needed.The material presented by the resource person is suitable for the current pandemic conditions, easy to understand, easy to practice and can be developed for home businesses. The Zoom Meeting application can be used as a medium for community service activities in pandemic conditions even though it still cannot reach the wider community.  Keywords: Socialization, natto, soy yogurt, webinar, practical
Characterization and release profile of sodium diclofenac halal hard shell capsules made from k-carrageenan and xanthan gum with sorbitol plasticizer Tri Susanti; Siti Wafiroh; Esti Hendradi; Pratiwi Pudjiastuti
Journal of halal product and research (JPHR) Vol. 3 No. 1 (2020): Journal of Halal Product and Research (JHPR)
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jhpr.vol.3-issue.1.1-8

Abstract

Halal hard shell capsules are importantly needed by Indonesian consumers, who are predominantly Muslim, to substitute mostly used and commercially available products made from non-halal ingredients such as gelatin. The objective of this study is to prepare, characterize, and evaluate halal hard shell capsules made from k-carrageenan-xanthan gum with sorbitol as the plasticizer with diclofenac sodium as the model drug. Hardshell capsules were prepared with combinations of κ-carrageenan-xanthan gum at a weight ratio of 4:2 with the addition of 70% sorbitol, which added at a varied volume of 0.25; 0.50; 0.75; and 1.00 mL. Characterization of halal hard shell capsules includes swelling degree, tensile strength, Fourier Transformed Infrared (FTIR) and Scanning Electron Microscope (SEM), as well as disintegration test. The diclofenac sodium profile release was evaluated through the dissolution test at pH 6.8. The best physical characteristics were obtained by preparing capsule shells with a mixture of carrageenan-xanthan gum at a weight ratio of 4:2 with the addition of 0.25 mL sorbitol. The evaluation of Halal hard shell capsules showed that it had a swelling rate of 3.46% in water media, stress modulus of 28.6 MPa, strain modulus of 4.3 MPa, and modulus young of 362,3%, as well as disintegration time of capsules, was 51.8 minutes at pH 6.8. The dissolution test showed that diclofenac sodium was released at a level of 2.7% for 16 minutes. Based on this data, it can be concluded that the Halal hard shell capsule of κ-carrageenan-xanthan gum with the addition of sorbitol can be used as an alternative for the gelatin capsule with more controlled release.
Electrochemical Sensor of Levofloxacin on Boron-Doped Diamond Electrode Decorated by Nickel Nanoparticles Prastika Krisma Jiwanti; Irfansyah Rais Sitorus; Grandprix Thomryes Marth Kadja; Siti Wafiroh; Yasuaki Einaga
Indonesian Journal of Chemistry Vol 22, No 5 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.73515

Abstract

Levofloxacin (LEV) was known as one of the fluoroquinolone antibiotics that widely used as an antibacterial agent. Monitoring of LEV is important due to its negative side effect on humans. The determination of LEV was studied for the first time on nickel modified on a boron-doped diamond (NiBDD) electrode using the square wave voltammetry (SWV) method to improve the catalytic and sensitivity of the sensor. The response was linear in the range of 30–100 mM LEV. LEV sensor on NiBDD was found to be selective in the presence of urea, glucose, and ascorbic acid interferences. Good reproducibility with % a relative standard deviation of 1.45% (n = 10) was achieved. Therefore, the NiBDD electrode could be potentially applied for the real detection method of LEV.
UJI KETAHANAN AIR (SWELLING) PADA CANGKANG KAPSUL ALGINAT-KITOSAN MENGGUNAKAN POLYETHYLENE GLYCOL (PEG) Aulia Mutiara Hikmah; Siti Wafiroh
Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Vol 6, No 3 (2023)
Publisher : Universitas Islam Kalimantan MAB Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/dl.v6i3.12366

Abstract

Kapsul komersial yang terbuat dari gelatin memiliki ketahanan terhadap air sangat rendah. Oleh karena itu, diperlukan alternatif material kapsul untuk meningkatkan ketahanan air kapsul. Penelitian ini bertujuan untuk membuat dan mengkarakterisasi komposit alginat-kitosan dan plasticizer PEG sebagai cangkang kapsul. Natrium alginat diekstraksi dari rumput laut coklat (Sargassum sp.) melalui jalur asam alginat. Cangkang kapsul dibuat dengan 5 variasi (b/b) perbandingan alginat:kitosan yakni 2:1; 3:1; 4:1; 5:1; 1:3 (b/b) ditambah dengan plasticizer PEG 20% (b/v). Karakterisasi yang dilakukan meliputi uji swelling air, uji FTIR dan Uji SEM. Dari hasil uji swelling yang dilakukan dalam penelitian ini diperoleh cangkang kapsul optimal yaitu dengan komposisi perbandingan alginat-kitosan 2:1 (b/b) dengan persentase swelling air sebesar 72,26%. Uji swelling air pada cangkang kapsul komersial yakni sebesar 43,9%. Dengan demikian, komposit natrium alginat-kitosan dapat digunakan sebagai cangkang kapsul.
Co-Authors A. Budi Prasetyo AFAF BAKTIR Agus Kuncaka Ahlan Riwahyu Habibi Alfa Akustia Widati Aning Purwaningsih Atik Widiyanti Aulia Mutiara Hikmah Aulianitha Salsabella Eko Sugiharto Esti Hendradi Fatiha Khairunnisa Gamasiano Alfiansyah Ganden Supriyanto Harsasi Setyawati Hartati Hartati Irfansyah Rais Sitorus Kadja, Grandprix Thomryes Marth Kariza Makanty Mevitri Rahmiati Miratul Khasanah Mudasir Mudasir Muji Harsini Novita Nuraini Prastika Krisma Jiwanti Pratiwi Pudjiastuti Purkan Purkan Qurrota A’yuni Rico Ramadhan, Rico Rossalina Adi Wijayanti Selvia Juwita Swari Sofijan Hadi Sri Sumarsih Suyanto Suyanto Tokok Ardiarto Tri Susanti Yasuaki Einaga Yuliana Yuliana