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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Penelitian dan Evaluasi Pendidikan Jurnal Kesehatan Lingkungan indonesia Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Pendidikan Indonesia Jurnal Pendidikan Fisika Indonesia Jurnal Pendidikan Fisika FKIP UM Metro JFA (Jurnal Fisika dan Aplikasinya) Jurnal Riset Fisika Edukasi dan Sains Indonesian Journal of Science and Education Jurnal Bioteknologi & Biosains Indonesia (JBBI) JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) Jurnal Penelitian Pendidikan IPA (JPPIPA) INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Pendidikan Fisika dan Keilmuan (JPFK) Formatif: Jurnal Ilmiah Pendidikan MIPA Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA JTP - Jurnal Teknologi Pendidikan Kasuari: Physics Education Journal (KPEJ) Variabel Natural Science: Jurnal Penelitian Bidang IPA dan Pendidikan IPA Quantum : Jurnal Pembelajaran IPA dan Aplikasinya Jurnal Ilmiah Sains Jurnal Pendidikan Siber Nusantara Jurnal Manajemen Pendidikan Islam Jurnal Ilmu Fisika dan Terapannya (JIFTA) Indonesian Journal of Applied Science and Technology
Suparno Suparno
Departemen Pendidikan Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Negeri Yogyakarta
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Proses Pembuatan Krim Keju Kacang Tanah dengan Memanfaatkan Medan Magnet Extremely Low Frequency (ELF) Ernita Apriani; Suparno Suparno; Aminatul Munawaroh; Rahmatullah Rahmatullah
Indonesian Journal of Applied Science and Technology Vol. 2 No. 3 (2021): Edisi September 2021
Publisher : Indonesian

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pesatnya perkembangan teknologi dan penggunaan peralatan elektronik menyebabkan makhluk hidup terkena radiasi medan magnet Extremely Low Frequency (ELF) baik secara sadar atau tidak. Medan magnet ELF adalah radiasi non-pengion dan non-termal. Efek paparan medan ELF mulai dikaji dampaknya terhadap manusia, hewan, dan tumbuhan. Oleh karena itu, penelitian yang menilai efek paparan medan magnet ELF muncul, salah satunya sebagai teknologi pengawetan makanan dan pemrosesan produk fermentasi. Produk pengolahan susu yang sedang diminati oleh masyarakat adalah keju. Bagi orang yang memiliki alergen susu sapi, tidak bisa menikmati keju. Peneliti menginovasi produk keju dari kacang tanah. Pada proses pembuatan keju, sangat dipengaruhi oleh nilai pH dan kadar air agar mendapatkan keju yang terbaik. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh besaran paparan medan magnet ELF dalam proses pembuatan cream cheese kacang tanah. Penelitian ini bersifat eksperimental. Desain penelitian yang digunakan adalah randomized post-test only control group. Dari hasil penelitian ini menunjukkan bahwa nilai pH akan semakin meningkat seiring bertambahnya intensitas paparan medan magnet ELF yang diberikan. Nilai pH paling efektif pada paparan medan magnet 0,1mT dan 0,2mT yaitu 5,37 dan 5,47. Nilai kadar air akan semakin meningkat seiring bertambahnya intensitas paparan medan magnet yang diberikan. Hal ini dikarenakan semakin kecil paparan medan magnet ELF yang diberikan, bakteri Lactobacillus bulgaricu dan Streptococcus lactis dalam proses pembuatan krim keju semakin banyak sehingga nilai pH dan nilai kadar airnya juga semakin kecil.
Ionic Silver Nanoparticles (Ag+) Sebagai Bahan Antibiotik Alternatif Untuk Salmonella Typhymurium Saraswati Kendis Intan Palupi; Suparno Suparno
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 10, No 01 (2020): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (422.742 KB) | DOI: 10.13057/ijap.v10i01.34407

Abstract

This study aims to determine the ability of ionic silver nanoparticles (ISN) Ag+ as an antibiotic material to inhibit the growth of Salmonella typhimurium. ISN are produced by electrolysis using two AgBr bars as electrodes with distilled water as electrolyte solvents. The effect of electrolysis time on ISN concentration and electrical conductivity was observed with a TDS and EC meter. All ISN samples have been characterized by UV-Vis spectrophotometer, AAS, and PSA. The results showed the concentration of ISN and the electrical conductivity of the solution increased with the length of time of electrolysis. UV-Vis spectrophotometer test results have shown the peak of absorbance at a wavelength of 416.5-417 nm. The concentration test using AAS has shown that the concentration of ISN for TDS 11 ppm, 20 ppm and 29 ppm is 9.8 ppm, 17.6 ppm, and 23.9 ppm respectively. While the size of silver nanoparticles PSA test results have shown (76.8 ± 0.667) nm. The results of the test of the ability of ISN as an antibiotic Salmonella typhimurium showed the formation of a clear zone until the 72th hour with the largest average diameter in the stationary phase area (hours 24-72) was 7.39 ± 0.04 mm for a concentration of 20 ppm.
Karakterisasi Muatan Nanopartikel Silika (SiO2) dengan Metode Elektroforesis Purwoko Haryadi Santoso; Yohanes Kurniawan; Havid Noor Pamungkas; Suparno Suparno
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 11, No 1 (2021): April
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v11i1.48326

Abstract

Electrophoresis is one of the experimental methods employed in this study to characterize unique properties of charges of silica nanoparticles (SiO2) by observing their electrophoretic phenomena while they are situated in the electric field. This study is aimed to measure one of the SiO2 properties, namely the charge, using electrophoresis method through the variation of electric fields. The charge dependencies of SiO2 was probed towards five times variation of electric fields 1000, 1250, 1500, 1750, and 2000 V/m in 20 mL of aquades. The displacement of SiO2 could be observed through the light microscope with 160x magnification which the recorded observations then were analyzed by timeline-based software to measure the displacement time of particles during the observation. The results revealed that silica nanoparticles have the kind of positive charges in the colloidal solution. It is caused the magnitude of SiO2 charges is ranged constantly despite the variational effect of electric field in the environment. Light microscope has been optimized in this study to measure the velocity of SiO2 that tends to increase with respect to the magnifying electric fields given in the experiment.
Co-Authors Abdul Aziz N Rohman Agustihana, Seftyan ahmad rizani ahmad rizani aldian nindya aldian nindya Ali, Mohammad Ryan Mahsun Aminatul Munawaroh andri nur priyatno andri nur priyatno Ariswan Ariswan Arwan, Nur Anisa Bambang Ruwanto Beatrix Elvi Dasilva Beatrix Elvi Dasilva Devi Afriani Devika Khoirul Hafifah Devy Nurmayanti Djemari Mardapi Doni saputra Edi Istiyono Eggydhia Ananda Rania Balqist Elisabet Sa Wulo Erlin Eveline Ernita Apriani Febrina Rosa Winda Fika Fauzi FISSA SEPTY PRIMAWATI FISSA SEPTY PRIMAWATI Fitria Arifiyanti Handoyo Saputro Havid Noor Pamungkas Heru Kuswanto Himawan, Nur Arviyanto Ivandra Immanuela Latumakulita Iza Alfi Rohmatin Jumadi Jumadi Khaireni Puspaningtyas Khasanah, Ayu Hana Umi Lia Desi Parwati Listanti, Anita Mardhiyyatin Naqiyah Mega Safana Mohamad Heru Mudilarto Mudilarto Muhammad Rizki Muhammad Zaini Nadhiroh, Nuraini Nadia Natalia Simamora Nadya Amalia Putri Hapsari Nadya Amalia Putri Hapsari Ningsih, Anissa Dwi Arista Nisrina Hasna Mustofa Nugroho Prasetya Adi Puji Hariati Winingsih Purwita, Tanty Dwi Purwoko Haryadi Santoso Puthy Nurlina Sari R. Yossi Aprian Sari Rahmatullah Rahmatullah Rahmatullah, R. Rangga Alif Faresta Rany, Tiara Delvika Ratna Dwi Astuti Rattiwizal Alpin Y Replianis Replianis Rezi Akbar Zarnazi Rika Ariyani Riki Perdana Rio Sebastian Riska Aldania Rita Prasetyowati Rizky Aji Saputra Aji Rizky Aji Saputra Saraswati Kendis Intan Palupi Setyawati, Fadhilah Fitria Singgih Hutomo Aji Siti Meisaroh Syayid Qosim M.J.A Tiara Delvika Rany Tiara Kusuma Ardiyati Tiara Kusuma Ardiyati Tri Utami Tuada, R N Vegisari Vegisari, Vegisari Wahyu Setyoadi Nugroho Warsono Warsono Warsono Warsono Widiastuti Tri Widiastuti Wipsar Sunu Brams Dwandaru Yeni Ristya Wardani Yohanes Kurniawan Yunike Kurnia Unda Yusman Wiyatmo Yutisa Is Dhiarni Zuhdan Kun Prasetyo Zul Hidayatullah Zulia Nur Rachma Zulia Nur Rachma