{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T17:21:52Z","timestamp":1775236912382,"version":"3.50.1"},"reference-count":126,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2018,11,27]],"date-time":"2018-11-27T00:00:00Z","timestamp":1543276800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["31701695"],"award-info":[{"award-number":["31701695"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Due to their unique optical properties, narrow size distributions, and good biological affinity, gold nanoparticles have been widely applied in sensing analysis, catalytic, environmental monitoring, and disease therapy. The color of a gold nanoparticle solution and its maximum characteristic absorption wavelength will change with the particle size and inter-particle spacing. These properties are often used in the detection of hazardous chemicals, such as pesticide residues, heavy metals, banned additives, and biotoxins, in food. Because the gold nanoparticles-colorimetric sensing strategy is simple, quick, and sensitive, this method has extensive applications in real-time on-site monitoring and rapid testing of food quality and safety. Herein, we review the preparation methods, functional modification, photochemical properties, and applications of gold nanoparticle sensors in rapid testing. In addition, we elaborate on the colorimetric sensing mechanisms. Finally, we discuss the advantages and disadvantages of colorimetric sensors based on gold nanoparticles, and directions for future development.<\/jats:p>","DOI":"10.3390\/s18124166","type":"journal-article","created":{"date-parts":[[2018,11,27]],"date-time":"2018-11-27T12:17:35Z","timestamp":1543321055000},"page":"4166","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":179,"title":["Application of Gold-Nanoparticle Colorimetric Sensing to Rapid Food Safety Screening"],"prefix":"10.3390","volume":"18","author":[{"given":"Guangyang","family":"Liu","sequence":"first","affiliation":[{"name":"Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Vegetables Quality and Safety Control, Ministry of Agriculture and Rural Affairs of China, Beijing 100081, China"},{"name":"College of Life Sciences and Engineering, Hebei University of Engineering, Handan 056021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Meng","family":"Lu","sequence":"additional","affiliation":[{"name":"Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Vegetables Quality and Safety Control, Ministry of Agriculture and Rural Affairs of China, Beijing 100081, China"},{"name":"College of Life Sciences and Engineering, Hebei University of Engineering, Handan 056021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaodong","family":"Huang","sequence":"additional","affiliation":[{"name":"Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Vegetables Quality and Safety Control, Ministry of Agriculture and Rural Affairs of China, Beijing 100081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tengfei","family":"Li","sequence":"additional","affiliation":[{"name":"College of Life Sciences and Engineering, Hebei University of Engineering, Handan 056021, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Donghui","family":"Xu","sequence":"additional","affiliation":[{"name":"Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Key Laboratory of Vegetables Quality and Safety Control, Ministry of Agriculture and Rural Affairs of China, Beijing 100081, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,11,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"409","DOI":"10.1016\/j.talanta.2014.11.045","article-title":"Use of green coating (cork) in solid-phase microextraction for the determination of organochlorine pesticides in water by gas chromatography-electron capture detection","volume":"134","author":"Merib","year":"2015","journal-title":"Talanta"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"472","DOI":"10.1016\/j.matlet.2015.07.157","article-title":"Preparation of a magnetic molecularly imprinted polymer using g-C3N4\u2013Fe3O4 for atrazine adsorption","volume":"160","author":"Liu","year":"2015","journal-title":"Mater. 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