DataVXACS Applied Nano MaterialsPaper
journal article·2024-06-28

Gold Nanobipyramid-Based Photothermal Sensors for the Portable Evaluation of Total Antioxidant Capacity

Jiahui Huang, Fan Jiang, Zhe Zhao, Zhixin Li, Xiaoyu Deng, Ray P. S. Han, Shaohua Xu, Yingzhou Tao, Zhenyu Lin

ACS Applied Nano Materials· Volume 7· Issue 12
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Source abstract

Abstract

Antioxidants are highly effective in preventing oxidative damage and reducing the risk of various diseases. To comprehensively evaluate the antioxidant content in food or nutrients, simple, portable, and cost-effective assays must be developed for measuring the total antioxidant capacity (TAC). In this study, gold nanobipyramids (AuNBPs) with a tunable photothermal effect were utilized as a probe to develop a straightforward method for photothermally sensing and assessing the TAC. Owing to the high refractive sensitivity of AuNBPs, antioxidant-triggered silver deposition induced drastic changes in their absorption spectra and photothermal effects. By this means, the TAC information can be converted into temperature signals easily captured using an affordable portable thermal camera. With our photothermal sensing strategy, the detection limit for ascorbic acid (a model antioxidant) is 0.08 μM, within the linear range of 0.1–100 μM. Furthermore, our method was successfully applied in practical applications for evaluating the TAC in honey and vitamin C tablets. The developed AuNBP-based photothermal assay exhibits considerable potential for portably assessing TAC.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsMaterials processing

OpenAlex topics: Advanced Chemical Sensor Technologies · Advanced Nanomaterials in Catalysis · Gold and Silver Nanoparticles Synthesis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Cancer Research Center & Jiangxi Engineering Research Center for Translational Cancer Technology, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330004, China

School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330004, China

Institute for Advanced Study, Research Center for Differentiation and Development of TCM Basic Theory, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330004, China

Ministry of Education, Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang, Jiangxi 330004, China

Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, China

Funding

Key Science and Technology Research Project in Jiangxi Province Department of Education · National Natural Science Foundation of China · Jiangxi University of Traditional Chinese Medicine · Natural Science Foundation of Jiangxi Province

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