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SERS-tag techology in food safety and detection:sensing from the"fingerprint"region to the"biological-silent"region

Journal of Future Foods 2024年第4期4卷 309-323页

作者： Chen Chen Ximo Wang Ruiqiang Wang Geoffrey LN.Waterhouse Zhixiang Xu College of Food Science and Engineering Shandong Agricutural UniversiyTai'an 271018China Shandong Cayon Testing Co. LtdJining 272000China School of Chemical Sciences The University of AucklandAnckland 1142New Zealand

Surface enhanced Raman spectroscopy(SERS)offers many advantages for the fast and sensitive detection of specific compounds,metal ions or pathogens in foods,motivating to its increasing utilization in food ***-tags,typically constructed using signal enhanced substrate,Raman reporter molecules,a biocompatible protective layer and a specific recognition element,provide a powerful tool for the analysis of food *** article reviews recent progress in the development of SERS-tags for food safety assessment covering SERS-tags with characteristic peaks in the“fingerprint”region(800-1800 cm-1)and the“biological-silent”region(1800-2800 cm-1).Following a brief description of SERS substrates,the design,synthesis and applications of SERS-tag are explored in *** application of SERS-tags technology for the detection of microorganisms,pesticides and antibiotics are then ***,the prospects of using SERS-tag in real-world food safety analysis are critically discussed.

关键词： Surface enhanced Raman spectroscopy SERS-tags Raman reporter molecule fingerprint region Biological-silent region Food Safety

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Advanced experimental methods toward understanding biophysicochemical interactions of interfacial biomolecules by using sum frequency generation vibrational spectroscopy

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Science China Chemistry 2014年第12期57卷 1646-1661页

作者： YE Shu Ji LUO Yi Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics University of Science and Technology of China Synergetic Innovation Center of Quantum Information & Quantum Physics University of Science and Technology of China

Sum frequency generation vibrational spectroscopy(SFG-VS)has been demonstrated to be a powerful technique to study the interfacial structures and interactions of biomolecules at the molecular *** most previous studies mainly collected the SFG spectra in the frequency range of 1500–4000 cm-1,which is not always sufficient to describe the detailed interactions at surface and *** knowledge of the complex biophysicochemical interactions between biomolecules and surface requires new ideas and advanced experimental methods for collecting SFG vibrational *** introduced some advanced methods recently exploited by our group and others,including(1)detection of vibration modes in the fingerprint region;(2)combination of chiral and achiral polarization measurements;(3)SFG coupled with surface plasmon polaritons(SPPs);(4)imaging and microscopy approaches;and(5)ultrafast time-resolved SFG *** technique that we integrated with these advanced methods may help to give a detailed and high-spatial-resolution 3D picture of interfacial biomolecules.

关键词： protein cholesterol 3D interfacial structures fingerprint region amide III chiral polarization surface plasmon polaritons time-resolved

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