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Trends in Biosensors for Food and Environment Detection

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Green Chemistry".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 2277

Special Issue Editor


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Guest Editor
College of Chemistry, Chemical Engineering and Materials Science of Soochow University, Suzhou, China
Interests: hapten design; antibody production; enzyme linked immunosorbent assay (ELISA); ELISA kits; surface enhanced Raman spectroscopy immunoassay; chemiluminescent immunoassay; flow injection immunoassay; immunosensor; lateral flow immunochromatographic assay; sample separation by immunoaffinity chromatography; bio-functional materials

Special Issue Information

Dear Colleagues,

The main topic of this Special Issue is the development of (bio)sensors and their applications for food safety and quality, as well as in environmental monitoring. In this regard, this Special Issue aims to collect original articles that present research advances in the design, fabrication, and application of high-performance (bio)sensors implementing new principles, strategies, methods, and technologies. Additionally, reviews reflecting current hotspots, new challenges, and future perspectives of (bio)sensors in the two important application areas are particularly welcome.

Safe food and benign environment are the two basic factors of human living and societal development. (Bio)sensors are considered efficient tools to ensure food safety and quality, as well as protect the environment. In this regard, interesting principles, strategies, and methods are being proposed to design, develop, and fabricate (bio)sensors. Moreover, the introduction of nanomaterials endows (bio)sensors with a promising future in food and environmental analyses. Biosensors based on various sensing modes (naked eye, colorimetric, smartphone-based, fluorescent, electrochemical, photoelectric, SERS, chemiluminescent, mass-based, thermal, etc.) and using various recognition elements (natural enzymes, artificial enzymes, DNA/aptamers, antibodies/antigens, molecularly imprinted polymers, etc.) are satisfying the growing needs of methods and devices for the rapid, reliable, and high-performance detection of targets (toxic ions; pesticides, veterinary drugs, and related biomarkers; pathogenic bacteria; antibiotics; toxins; organic pollutants; food additives; etc.) in food and environmental matrices.

Prof. Dr. Anping Deng
Guest Editor

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Keywords

  • antibody
  • immunoassay
  • aptamer
  • biosensor
  • optical
  • electrochemical
  • toxic substances

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Published Papers (1 paper)

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Research

14 pages, 3006 KiB  
Article
A Simple and Sensitive Nanogold RRS/Abs Dimode Sensor for Trace As3+ Based on Aptamer Controlled Nitrogen Doped Carbon Dot Catalytic Amplification
by Hongyan Bai, Haolin Wang, Fuzhang Bai, Aihui Liang and Zhiliang Jiang
Molecules 2021, 26(19), 5930; https://doi.org/10.3390/molecules26195930 - 30 Sep 2021
Cited by 4 | Viewed by 1957
Abstract
Using citric acid (CA) and ethylenediamine (EDA) as precursors, stable nitrogen-doped carbon dots (CD) nanosols were prepared by microwave procedure and characterized in detail. It was found that CDNs catalyze ethanol (Et)-HAuCl4 to generate gold nanoparticles (AuNPs), which have strong [...] Read more.
Using citric acid (CA) and ethylenediamine (EDA) as precursors, stable nitrogen-doped carbon dots (CD) nanosols were prepared by microwave procedure and characterized in detail. It was found that CDNs catalyze ethanol (Et)-HAuCl4 to generate gold nanoparticles (AuNPs), which have strong surface plasmon resonance, Rayleigh scattering, (RRS) and a surface plasmon resonance (SPR) absorption (Abs) effect at 370 nm and 575 nm, respectively. Compled the new catalytic amplification indicator reaction with the specific As3+ aptamer reaction, a new RRS/Abs dual-mode aptamer sensor for the assay of trace As3+ was developed, based on the RRS/Abs signals increasing linearly with As3+ increasing in the ranges of 5–250 nmol/L and 50−250 nmol/L, whose detection limits were 0.8 nmol/L and 3.4 nmol/L As3+, respectively. This analytical method has the advantages of high selectivity, simplicity, and rapidity, and it has been successfully applied to the detection of practical samples. Full article
(This article belongs to the Special Issue Trends in Biosensors for Food and Environment Detection)
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