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All Journal ARMADA : Jurnal Penelitian Multidisiplin
Shohwatul Islami Nurjihan FH
Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, Surabaya, Indonesia
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Highly Sensitive and Simple Colorimetric Sensor of Melamine in Milk using Cysteamine-Modified Silver Nanoparticles Ganden Supriyanto; Putri Bintang Dea Firda; Pinanggih Arum Diasyah; Ristyananda Refian Hidayatullah; Vivin Fasihatul Harfiah; Shohwatul Islami Nurjihan FH
ARMADA : Jurnal Penelitian Multidisiplin Vol. 4 No. 9 (2026): ARMADA : Jurnal Penelitian Multidisplin, September 2026
Publisher : LPPM Sekolah Tinggi Ilmu Ekonomi 45 Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/armada.v4i9.3778

Abstract

A simple and rapid method to detect melamine in milk samples using cysteamine-modified silver nanoparticles (CA-AgNPs) is presented.  Stable AgNPs with an average particle size of 34.6 nm were successfully synthesized using sodium borohydride as a reducing agent. The thiol group of CA facilitates the grafting of CA on AgNPs substrate via the S-Ag complex. The color change from yellow to pink-purple was observed when CA-AgNPs were exposed to melamine. Quantitative analysis using UV-Vis spectrophotometry showed that the synthesized CA-AgNPs is a selective and sensitive colorimetric sensor for melamine with a limit of detection value of 0.094 µM which was much lower than the safe limits (2.0 µM in the USA) and recovery >90%. With the increased awareness of sustainable development goals, this research is an approach to achieving good health and well-being.
Co-Authors Ganden Supriyanto Pinanggih Arum Diasyah Putri Bintang Dea Firda Ristyananda Refian Hidayatullah Vivin Fasihatul Harfiah