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All Journal JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Jurnal Riset Fisika Edukasi dan Sains
Widjayanti, Octavia Dwi
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Earth & Planetary Sciences Education Electrical & Electronics Engineering Physics

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PENGARUH PAPARAN MEDAN MAGNET ELF (EXTREMELY LOW FREQUENCY) TERHADAP pH SUSU KEDELAI Widjayanti, Octavia Dwi; Sudarti, Sudarti; Astutik, Sri
Jurnal Riset Fisika Edukasi dan Sains Vol 8, No 1 (2021): Jurnal Riset Fisika Edukasi dan Sains
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jrfes.2021.v8i1.4848

Abstract

Susu kedelai merupakan hasil ekstraksi kedelai yang sangat bermanfaat namun memiliki masa simpan yang relatif rendah. Medan magnet Extremely Low Frequency merupakan bagian dari spektrum pada gelombang elektromagnetik yang berfrekuensi < 0,3 kHz dan termasuk dalam radiasi non ionizing, dimana dapat digunakan di berbagai bidang seperti pangan, pertanian, dan kedokteran. Pada penelitian ini terdapat dua kelompok yaitu kelompok kontrol (kelompok yang tidak diberikan paparan medan magnet ELF) dan kelompok eksperimen (kelompok yang diberikan paparan medan magnet ELF intensitas 300 μT dan 500 μT dengan waktu paparan 60 menit, 90 menit, dan 120 menit). Analisa data dilakukan dengan uji Oneway Anova dilanjutkan uji LSD menggunakan software IBM SPSS Statistics 25. Hasil penelitian didapatkan bahwa paparan medan magnet Extremely Low Frequency (ELF) berpengaruh terhadap pH susu kedelai, dimana intensitas paparan 500 μT dengan waktu paparan 60 menit berpotensi dalam menghambat penurunan pH susu kedelai.   Kata kunci: pH, Medan Magnet ELF, Susu Kedelai
An analysis of soy milk physical resistance exposed to extremely low frequency (ELF) magnetic fields of 300 μT and 500 μT intensities Sudarti, Sudarti; Widjayanti, Octavia Dwi
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 10 No 2 (2021): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v10i2.9917

Abstract

Several studies have reported that exposure to ELF magnetic fields can increase cell death and inhibit bacterial proliferation. This study aimed to analyze the resistance of soy milk exposed to ELF magnetic fields with 300 μT and 500 μT intensities. The researchers employed a completely randomized design. The soy milk samples were exposed to ELF magnetic fields intensities of 300 μT and 500 μT for 60, 90, and 120 minutes. The variables studied were physical resistance (aroma, color, texture, and clot formation), pH, and density. The physical condition data were analyzed descriptively, while the pH and density data were analyzed using Mann Whitney and Kruskal Wallis statistics. The results showed that the aroma, texture, and clot formation on the surface of the samples exposed to the 500 μT intensity were better than the control group until ten hours after exposure. However, the color was not different from the control group. Therefore, exposure to ELF magnetic fields intensity of 500 μT potentially increased the soy milk resistance. The research results can be used as the basis for developing food security technology with ELFelectromagnetic wave radiation.
Co-Authors SRI ASTUTIK Sudarti Sudarti