Facile SERS screening of melamine in bovine milk with 2D printed AgNPs/glass fabric filter paper as the flexible substrate  

作　　者：Shiyao Wang Yanan Zhao Xiao Wei Yisheng Chen 

机构地区：[1]College of Food Science and Engineering,Shanxi Agricultural University,Taigu 030801,China [2]Food Nutrition and Safety Institute,Shanxi Agricultural University,Taiyuan 030031,China [3]School of Food Science and Technology,Jiangnan University,Wuxi 214122,China

出　　处：《Food Science and Human Wellness》2024年第5期2595-2600,共6页食品科学与人类健康（英文）

基　　金：supported by National Natural Science Foundation of China(21804058);Shanxi Scholarship Council of China(2021-068);Shanxi Agricultural University High-Level Talent Project(2021XG013);Shanxi Postdoc Reward(SXBYKY2022001).

摘　　要：Melamine is one of the most frequently detected adulterants in dairy products.The current study proposes a surface-enhanced Raman spectroscopy(SERS)-based analytical tool for fast and reliable screening of melamine in bovine milk.A hand-held Raman spectrometer was used in conjunction with a substrate composed of silver nanoparticles(AgNPs)that was 2D printed onto glass fiber(GF)filter paper.Under optimized conditions,a sensitive and fingerprint-like signal at 674 cm^(-1) was obtained.The AgNPs/GF substrate exhibited high sensitivity to melamine in milk down to 1.9498×10^(-5)mg/mL,which is well below the USA and EU safety limits(2.5×10^(-3)mg/mL).Remarkably,the proposed technology was also highly reproducible,showing spot-to-spot and block-to-block variations below 3.3%and 4.9%at 674 cm^(-1) in Raman intensity,respectively.The characteristic peak intensity and concentration of melamine showed an acceptable linear relationship(R^(2)=0.9909)within the range of 0.0001-1 mg/mL.Overall,the method established in this study can provide an efficient and effective method for the quantitative target screening and detection of melamine in dairy products.

关 键 词：2D print MELAMINE MILK Surface-enhanced Raman spectroscopy(SERS) flexible substrate 

分 类 号：O657.37[理学—分析化学] TS252.7[理学—化学]