Emerging Biosensor Technology for the Detection of Environmental Toxins in Foods

A special issue of Foods (ISSN 2304-8158). This special issue belongs to the section "Food Toxicology".

Deadline for manuscript submissions: 15 February 2025 | Viewed by 1388

Special Issue Editors

Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou 510642, China
Interests: immunosensor; immunoassay; antibody engineering; nanobody; fluorescent sensor; biotoxin detection; food analysis
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Guest Editor
National Engineering Research Center of Wheat and Corn Further Processing, Henan University of Technology, Zhengzhou 450001, China
Interests: immunosensor; biotoxin detection; food analysis; nanobody; electrochemical aptasensor

Special Issue Information

Dear Colleagues,

The growing concern over environmental toxins in the food supply has intensified the need for rapid, reliable, and sensitive detection methods. This Special Issue, entitled "Emerging Biosensor Technology for the Detection of Environmental Toxins in Foods", focuses on the latest advancements in biosensor technologies designed to address this critical challenge. We invite research that explores innovative biosensing approaches, including nanomaterial-based sensors, electrochemical biosensors, and optical biosensors, aimed at detecting various environmental toxins such as pesticides, heavy metals, and mycotoxins in food products. Contributions that cover the development of portable, cost-effective, and high-throughput biosensing platforms are particularly welcome, as they represent the future of food safety monitoring. This Special Issue seeks to bridge the gap between laboratory research and real-world application, promoting technologies that ensure food safety and public health.

Dr. Lin Luo
Dr. Wenjie Ren
Guest Editors

Manuscript Submission Information

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Keywords

  • biosensors
  • environmental toxins
  • electrochemical sensors
  • optical sensors
  • pesticide detection
  • heavy metal detection
  • mycotoxin detection
  • portable sensing platforms

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Published Papers (1 paper)

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Research

16 pages, 3679 KiB  
Article
Detection of AFB1 by Immunochromatographic Test Strips Based on Double-Probe Signal Amplification with Nanobody and Biotin–Streptavidin System
by Yifan Li, Zhenfeng Li, Baozhu Jia, Zhui Tu, Juntao Zeng, Jiarui Pang, Wenjie Ren, Zhibing Huang, Baoshan He and Zhihua Wang
Foods 2024, 13(21), 3396; https://doi.org/10.3390/foods13213396 - 25 Oct 2024
Viewed by 671
Abstract
Aflatoxin B1 (AFB1) is highly toxic and difficult to prevent. It is mainly produced by fungi and exists in plants and animals and is classified by the World Health Organization as a class I carcinogen, posing a serious threat to [...] Read more.
Aflatoxin B1 (AFB1) is highly toxic and difficult to prevent. It is mainly produced by fungi and exists in plants and animals and is classified by the World Health Organization as a class I carcinogen, posing a serious threat to human and animal health. Therefore, it is important to establish an efficient, sensitive, and on-site detection method for AFB1 to protect human health. The immunochromatographic test strip method is simple, sensitive, and can achieve real-time detection. However, traditional immunochromatographic test strips have low sensitivity due to their relatively weak optical properties. In this study, Nb-G8 was biotinylated using a chemical method. Two sizes of gold nanoflowers (AuNFs) were prepared and combined with biotinylated G8 and streptavidin to form two types of probes. These probes were sprayed on gold standard pads and expanded pads, respectively, to enhance the signals through the high affinity interaction between streptavidin and biotin. Under the optimal experimental conditions, the half maximal inhibitory concentration (IC50) of this method was 5.0 ng/mL and the limit of detection (IC10) was 0.03 ng/mL, which increased the sensitivity of the test strip by four-fold compared with that of the traditional biotinylated nanoantibody immunochromatography test strip and had a wider detection range. In conclusion, the use of a high-affinity amplification signal between biotin and streptavidin is a valuable method for the detection of aflatoxin. Full article
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