Gold nanoparticle-based optical nanosensors for food and health safety monitoring: recent advances and future perspectives

Modern society has been facing serious health-related problems including food safety, diseases and illness. Hence, it is urgent to develop analysis methods for the detection and control of food contaminants, disease biomarkers and pathogens. As the traditional instrumental methods have several disad...

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Bibliographic Details
Published in:RSC advances 2022-04, Vol.12 (18), p.10950-10988
Main Authors: Anh, Nguyen Ha, Doan, Mai Quan, Dinh, Ngo Xuan, Huy, Tran Quang, Tri, Doan Quang, Ngoc Loan, Le Thi, Van Hao, Bui, Le, Anh-Tuan
Format: Article
Language:English
Subjects:
Biocompatibility
Biomarkers
Chemistry
Colorimetry
Contaminants
Disease control
Energy transfer
Food
Gold
Nanoparticles
Nanosensors
Optical properties
Pathogens
Raman spectra
Resonance scattering
Telemedicine
Transducers
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Summary:Modern society has been facing serious health-related problems including food safety, diseases and illness. Hence, it is urgent to develop analysis methods for the detection and control of food contaminants, disease biomarkers and pathogens. As the traditional instrumental methods have several disadvantages, including being time consuming, and having high cost and laborious procedures, optical nanosensors have emerged as promising alternative or complementary approaches to those traditional ones. With the advantages of simple preparation, high surface-to-volume ratio, excellent biocompatibility, and especially, unique optical properties, gold nanoparticles (AuNPs) have been demonstrated as excellent transducers for optical sensing systems. Herein, we provide an overview of the synthesis of AuNPs and their excellent optical properties that are ideal for the development of optical nanosensors based on local surface plasmon resonance (LSPR), colorimetry, fluorescence resonance energy transfer (FRET), and surface-enhanced Raman scattering (SERS) phenomena. We also review the sensing strategies and their mechanisms, as well as summarizing the recent advances in the monitoring of food contaminants, disease biomarkers and pathogens using developed AuNP-based optical nanosensors in the past seven years (2015-now). Furthermore, trends and challenges in the application of these nanosensors in the determination of those analytes are discussed to suggest possible directions for future developments.
ISSN:2046-2069
2046-2069
DOI:10.1039/d1ra08311b