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All Journal Sunan Kalijaga Journal of Physics
Rahmaningrum, Nadia
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Earth & Planetary Sciences Education Electrical & Electronics Engineering Materials Science & Nanotechnology Physics

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ANALISIS TAHU TERKONTAMINASI FORMALIN MENGGUNAKAN SISTEM SPEKTROSKOPI FLUORESENSI BERBASIS HIGH POWER UV-LED Rahmaningrum, Nadia; Rakhmadi, Frida Agung; Fajriati, Imelda
Sunan Kalijaga Journal of Physics Vol. 2 No. 1 (2020): Sunan Kalijaga Journal of Physics
Publisher : Prodi Fisika Fakultas Sains dan Teknologi UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/physics.v2i1.2323

Abstract

This research was motivated by the discovery of white tofu preserved using formalin. This study aimed to analyze formalin contaminants in tofu and determine the precision and detection limits of a fluorescence spectroscopy system based on high power UV-LED. This research was conducted in three stages, namely making samples, collecting data, and processing data. The sample was made directly in the tofu factory with the owner and the object used in this study is white tofu which was given a variation of formalin contaminants 0%-50%. Data were collected using a set of fluorescence spectroscopy system based on high power UV-LED that is connected to software LabVIEW and each foreign formalin contaminant test in tofu used five samples with three repetitions for each sample. Data processing to obtain bin values for each a variation of formalin contaminant was carried out using Microsoft Excel, moreover to find a value of precision and a detection limit. Based on the result, a precision test result of 100% and a detection limit of 12.05%.
Co-Authors Frida Agung Rakhmadi, Frida Agung Imelda Fajriati