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

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外文摘要：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 1.949 8×10-5 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(R2=0.990 9)within the range of 0.000 1-1 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.

外文关键词：

2D printMelamineMilkSurface-enhanced Raman spectroscopy(SERS)flexible substrate

作者：

Shiyao Wang、Yanan Zhao、Xiao Wei、Yisheng Chen

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作者单位：

College of Food Science and Engineering,Shanxi Agricultural University,Taigu 030801,China

Food Nutrition and Safety Institute,Shanxi Agricultural University,Taiyuan 030031,China

School of Food Science and Technology,Jiangnan University,Wuxi 214122,China

基金：

National Natural Science Foundation of ChinaShanxi Scholarship Council of ChinaShanxi Agricultural University High-Level Talent ProjectShanxi Postdoc Reward

项目编号：

218040582021-0682021XG013SXBYKY2022001

出版年：

2024

DOI：

10.26599/FSHW.2022.9250208

食品科学与人类健康(英文)

CSTPCD

ISSN：

年,卷(期)：2024.13(5)